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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "src/v8.h" | |
| 6 | |
| 7 #if V8_TARGET_ARCH_MIPS64 | |
| 8 | |
| 9 // Note on Mips implementation: | |
| 10 // | |
| 11 // The result_register() for mips is the 'v0' register, which is defined | |
| 12 // by the ABI to contain function return values. However, the first | |
| 13 // parameter to a function is defined to be 'a0'. So there are many | |
| 14 // places where we have to move a previous result in v0 to a0 for the | |
| 15 // next call: mov(a0, v0). This is not needed on the other architectures. | |
| 16 | |
| 17 #include "src/code-factory.h" | |
| 18 #include "src/code-stubs.h" | |
| 19 #include "src/codegen.h" | |
| 20 #include "src/compiler.h" | |
| 21 #include "src/debug.h" | |
| 22 #include "src/full-codegen.h" | |
| 23 #include "src/ic/ic.h" | |
| 24 #include "src/parser.h" | |
| 25 #include "src/scopes.h" | |
| 26 | |
| 27 #include "src/mips64/code-stubs-mips64.h" | |
| 28 #include "src/mips64/macro-assembler-mips64.h" | |
| 29 | |
| 30 namespace v8 { | |
| 31 namespace internal { | |
| 32 | |
| 33 #define __ ACCESS_MASM(masm_) | |
| 34 | |
| 35 | |
| 36 // A patch site is a location in the code which it is possible to patch. This | |
| 37 // class has a number of methods to emit the code which is patchable and the | |
| 38 // method EmitPatchInfo to record a marker back to the patchable code. This | |
| 39 // marker is a andi zero_reg, rx, #yyyy instruction, and rx * 0x0000ffff + yyyy | |
| 40 // (raw 16 bit immediate value is used) is the delta from the pc to the first | |
| 41 // instruction of the patchable code. | |
| 42 // The marker instruction is effectively a NOP (dest is zero_reg) and will | |
| 43 // never be emitted by normal code. | |
| 44 class JumpPatchSite BASE_EMBEDDED { | |
| 45 public: | |
| 46 explicit JumpPatchSite(MacroAssembler* masm) : masm_(masm) { | |
| 47 #ifdef DEBUG | |
| 48 info_emitted_ = false; | |
| 49 #endif | |
| 50 } | |
| 51 | |
| 52 ~JumpPatchSite() { | |
| 53 DCHECK(patch_site_.is_bound() == info_emitted_); | |
| 54 } | |
| 55 | |
| 56 // When initially emitting this ensure that a jump is always generated to skip | |
| 57 // the inlined smi code. | |
| 58 void EmitJumpIfNotSmi(Register reg, Label* target) { | |
| 59 DCHECK(!patch_site_.is_bound() && !info_emitted_); | |
| 60 Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); | |
| 61 __ bind(&patch_site_); | |
| 62 __ andi(at, reg, 0); | |
| 63 // Always taken before patched. | |
| 64 __ BranchShort(target, eq, at, Operand(zero_reg)); | |
| 65 } | |
| 66 | |
| 67 // When initially emitting this ensure that a jump is never generated to skip | |
| 68 // the inlined smi code. | |
| 69 void EmitJumpIfSmi(Register reg, Label* target) { | |
| 70 Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); | |
| 71 DCHECK(!patch_site_.is_bound() && !info_emitted_); | |
| 72 __ bind(&patch_site_); | |
| 73 __ andi(at, reg, 0); | |
| 74 // Never taken before patched. | |
| 75 __ BranchShort(target, ne, at, Operand(zero_reg)); | |
| 76 } | |
| 77 | |
| 78 void EmitPatchInfo() { | |
| 79 if (patch_site_.is_bound()) { | |
| 80 int delta_to_patch_site = masm_->InstructionsGeneratedSince(&patch_site_); | |
| 81 Register reg = Register::from_code(delta_to_patch_site / kImm16Mask); | |
| 82 __ andi(zero_reg, reg, delta_to_patch_site % kImm16Mask); | |
| 83 #ifdef DEBUG | |
| 84 info_emitted_ = true; | |
| 85 #endif | |
| 86 } else { | |
| 87 __ nop(); // Signals no inlined code. | |
| 88 } | |
| 89 } | |
| 90 | |
| 91 private: | |
| 92 MacroAssembler* masm_; | |
| 93 Label patch_site_; | |
| 94 #ifdef DEBUG | |
| 95 bool info_emitted_; | |
| 96 #endif | |
| 97 }; | |
| 98 | |
| 99 | |
| 100 // Generate code for a JS function. On entry to the function the receiver | |
| 101 // and arguments have been pushed on the stack left to right. The actual | |
| 102 // argument count matches the formal parameter count expected by the | |
| 103 // function. | |
| 104 // | |
| 105 // The live registers are: | |
| 106 // o a1: the JS function object being called (i.e. ourselves) | |
| 107 // o cp: our context | |
| 108 // o fp: our caller's frame pointer | |
| 109 // o sp: stack pointer | |
| 110 // o ra: return address | |
| 111 // | |
| 112 // The function builds a JS frame. Please see JavaScriptFrameConstants in | |
| 113 // frames-mips.h for its layout. | |
| 114 void FullCodeGenerator::Generate() { | |
| 115 CompilationInfo* info = info_; | |
| 116 profiling_counter_ = isolate()->factory()->NewCell( | |
| 117 Handle<Smi>(Smi::FromInt(FLAG_interrupt_budget), isolate())); | |
| 118 SetFunctionPosition(function()); | |
| 119 Comment cmnt(masm_, "[ function compiled by full code generator"); | |
| 120 | |
| 121 ProfileEntryHookStub::MaybeCallEntryHook(masm_); | |
| 122 | |
| 123 #ifdef DEBUG | |
| 124 if (strlen(FLAG_stop_at) > 0 && | |
| 125 info->function()->name()->IsUtf8EqualTo(CStrVector(FLAG_stop_at))) { | |
| 126 __ stop("stop-at"); | |
| 127 } | |
| 128 #endif | |
| 129 | |
| 130 // Sloppy mode functions and builtins need to replace the receiver with the | |
| 131 // global proxy when called as functions (without an explicit receiver | |
| 132 // object). | |
| 133 if (is_sloppy(info->language_mode()) && !info->is_native() && | |
| 134 info->MayUseThis() && info->scope()->has_this_declaration()) { | |
| 135 Label ok; | |
| 136 int receiver_offset = info->scope()->num_parameters() * kPointerSize; | |
| 137 __ ld(at, MemOperand(sp, receiver_offset)); | |
| 138 __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); | |
| 139 __ Branch(&ok, ne, a2, Operand(at)); | |
| 140 | |
| 141 __ ld(a2, GlobalObjectOperand()); | |
| 142 __ ld(a2, FieldMemOperand(a2, GlobalObject::kGlobalProxyOffset)); | |
| 143 | |
| 144 __ sd(a2, MemOperand(sp, receiver_offset)); | |
| 145 __ bind(&ok); | |
| 146 } | |
| 147 // Open a frame scope to indicate that there is a frame on the stack. The | |
| 148 // MANUAL indicates that the scope shouldn't actually generate code to set up | |
| 149 // the frame (that is done below). | |
| 150 FrameScope frame_scope(masm_, StackFrame::MANUAL); | |
| 151 info->set_prologue_offset(masm_->pc_offset()); | |
| 152 __ Prologue(info->IsCodePreAgingActive()); | |
| 153 info->AddNoFrameRange(0, masm_->pc_offset()); | |
| 154 | |
| 155 { Comment cmnt(masm_, "[ Allocate locals"); | |
| 156 int locals_count = info->scope()->num_stack_slots(); | |
| 157 // Generators allocate locals, if any, in context slots. | |
| 158 DCHECK(!IsGeneratorFunction(info->function()->kind()) || locals_count == 0); | |
| 159 if (locals_count > 0) { | |
| 160 if (locals_count >= 128) { | |
| 161 Label ok; | |
| 162 __ Dsubu(t1, sp, Operand(locals_count * kPointerSize)); | |
| 163 __ LoadRoot(a2, Heap::kRealStackLimitRootIndex); | |
| 164 __ Branch(&ok, hs, t1, Operand(a2)); | |
| 165 __ InvokeBuiltin(Builtins::STACK_OVERFLOW, CALL_FUNCTION); | |
| 166 __ bind(&ok); | |
| 167 } | |
| 168 __ LoadRoot(t1, Heap::kUndefinedValueRootIndex); | |
| 169 int kMaxPushes = FLAG_optimize_for_size ? 4 : 32; | |
| 170 if (locals_count >= kMaxPushes) { | |
| 171 int loop_iterations = locals_count / kMaxPushes; | |
| 172 __ li(a2, Operand(loop_iterations)); | |
| 173 Label loop_header; | |
| 174 __ bind(&loop_header); | |
| 175 // Do pushes. | |
| 176 __ Dsubu(sp, sp, Operand(kMaxPushes * kPointerSize)); | |
| 177 for (int i = 0; i < kMaxPushes; i++) { | |
| 178 __ sd(t1, MemOperand(sp, i * kPointerSize)); | |
| 179 } | |
| 180 // Continue loop if not done. | |
| 181 __ Dsubu(a2, a2, Operand(1)); | |
| 182 __ Branch(&loop_header, ne, a2, Operand(zero_reg)); | |
| 183 } | |
| 184 int remaining = locals_count % kMaxPushes; | |
| 185 // Emit the remaining pushes. | |
| 186 __ Dsubu(sp, sp, Operand(remaining * kPointerSize)); | |
| 187 for (int i = 0; i < remaining; i++) { | |
| 188 __ sd(t1, MemOperand(sp, i * kPointerSize)); | |
| 189 } | |
| 190 } | |
| 191 } | |
| 192 | |
| 193 bool function_in_register = true; | |
| 194 | |
| 195 // Possibly allocate a local context. | |
| 196 if (info->scope()->num_heap_slots() > 0) { | |
| 197 Comment cmnt(masm_, "[ Allocate context"); | |
| 198 // Argument to NewContext is the function, which is still in a1. | |
| 199 bool need_write_barrier = true; | |
| 200 int slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; | |
| 201 if (info->scope()->is_script_scope()) { | |
| 202 __ push(a1); | |
| 203 __ Push(info->scope()->GetScopeInfo(info->isolate())); | |
| 204 __ CallRuntime(Runtime::kNewScriptContext, 2); | |
| 205 } else if (slots <= FastNewContextStub::kMaximumSlots) { | |
| 206 FastNewContextStub stub(isolate(), slots); | |
| 207 __ CallStub(&stub); | |
| 208 // Result of FastNewContextStub is always in new space. | |
| 209 need_write_barrier = false; | |
| 210 } else { | |
| 211 __ push(a1); | |
| 212 __ CallRuntime(Runtime::kNewFunctionContext, 1); | |
| 213 } | |
| 214 function_in_register = false; | |
| 215 // Context is returned in v0. It replaces the context passed to us. | |
| 216 // It's saved in the stack and kept live in cp. | |
| 217 __ mov(cp, v0); | |
| 218 __ sd(v0, MemOperand(fp, StandardFrameConstants::kContextOffset)); | |
| 219 // Copy any necessary parameters into the context. | |
| 220 int num_parameters = info->scope()->num_parameters(); | |
| 221 int first_parameter = info->scope()->has_this_declaration() ? -1 : 0; | |
| 222 for (int i = first_parameter; i < num_parameters; i++) { | |
| 223 Variable* var = (i == -1) ? scope()->receiver() : scope()->parameter(i); | |
| 224 if (var->IsContextSlot()) { | |
| 225 int parameter_offset = StandardFrameConstants::kCallerSPOffset + | |
| 226 (num_parameters - 1 - i) * kPointerSize; | |
| 227 // Load parameter from stack. | |
| 228 __ ld(a0, MemOperand(fp, parameter_offset)); | |
| 229 // Store it in the context. | |
| 230 MemOperand target = ContextOperand(cp, var->index()); | |
| 231 __ sd(a0, target); | |
| 232 | |
| 233 // Update the write barrier. | |
| 234 if (need_write_barrier) { | |
| 235 __ RecordWriteContextSlot( | |
| 236 cp, target.offset(), a0, a3, kRAHasBeenSaved, kDontSaveFPRegs); | |
| 237 } else if (FLAG_debug_code) { | |
| 238 Label done; | |
| 239 __ JumpIfInNewSpace(cp, a0, &done); | |
| 240 __ Abort(kExpectedNewSpaceObject); | |
| 241 __ bind(&done); | |
| 242 } | |
| 243 } | |
| 244 } | |
| 245 } | |
| 246 | |
| 247 // Possibly set up a local binding to the this function which is used in | |
| 248 // derived constructors with super calls. | |
| 249 Variable* this_function_var = scope()->this_function_var(); | |
| 250 if (this_function_var != nullptr) { | |
| 251 Comment cmnt(masm_, "[ This function"); | |
| 252 if (!function_in_register) { | |
| 253 __ ld(a1, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); | |
| 254 // The write barrier clobbers register again, keep is marked as such. | |
| 255 } | |
| 256 SetVar(this_function_var, a1, a2, a3); | |
| 257 } | |
| 258 | |
| 259 Variable* new_target_var = scope()->new_target_var(); | |
| 260 if (new_target_var != nullptr) { | |
| 261 Comment cmnt(masm_, "[ new.target"); | |
| 262 // Get the frame pointer for the calling frame. | |
| 263 __ ld(a2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); | |
| 264 | |
| 265 // Skip the arguments adaptor frame if it exists. | |
| 266 Label check_frame_marker; | |
| 267 __ ld(a1, MemOperand(a2, StandardFrameConstants::kContextOffset)); | |
| 268 __ Branch(&check_frame_marker, ne, a1, | |
| 269 Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); | |
| 270 __ ld(a2, MemOperand(a2, StandardFrameConstants::kCallerFPOffset)); | |
| 271 | |
| 272 // Check the marker in the calling frame. | |
| 273 __ bind(&check_frame_marker); | |
| 274 __ ld(a1, MemOperand(a2, StandardFrameConstants::kMarkerOffset)); | |
| 275 | |
| 276 Label non_construct_frame, done; | |
| 277 __ Branch(&non_construct_frame, ne, a1, | |
| 278 Operand(Smi::FromInt(StackFrame::CONSTRUCT))); | |
| 279 | |
| 280 __ ld(v0, | |
| 281 MemOperand(a2, ConstructFrameConstants::kOriginalConstructorOffset)); | |
| 282 __ Branch(&done); | |
| 283 | |
| 284 __ bind(&non_construct_frame); | |
| 285 __ LoadRoot(v0, Heap::kUndefinedValueRootIndex); | |
| 286 __ bind(&done); | |
| 287 | |
| 288 SetVar(new_target_var, v0, a2, a3); | |
| 289 } | |
| 290 | |
| 291 // Possibly allocate RestParameters | |
| 292 int rest_index; | |
| 293 Variable* rest_param = scope()->rest_parameter(&rest_index); | |
| 294 if (rest_param) { | |
| 295 Comment cmnt(masm_, "[ Allocate rest parameter array"); | |
| 296 | |
| 297 int num_parameters = info->scope()->num_parameters(); | |
| 298 int offset = num_parameters * kPointerSize; | |
| 299 | |
| 300 __ Daddu(a3, fp, | |
| 301 Operand(StandardFrameConstants::kCallerSPOffset + offset)); | |
| 302 __ li(a2, Operand(Smi::FromInt(num_parameters))); | |
| 303 __ li(a1, Operand(Smi::FromInt(rest_index))); | |
| 304 __ li(a0, Operand(Smi::FromInt(language_mode()))); | |
| 305 __ Push(a3, a2, a1, a0); | |
| 306 | |
| 307 RestParamAccessStub stub(isolate()); | |
| 308 __ CallStub(&stub); | |
| 309 | |
| 310 SetVar(rest_param, v0, a1, a2); | |
| 311 } | |
| 312 | |
| 313 Variable* arguments = scope()->arguments(); | |
| 314 if (arguments != NULL) { | |
| 315 // Function uses arguments object. | |
| 316 Comment cmnt(masm_, "[ Allocate arguments object"); | |
| 317 if (!function_in_register) { | |
| 318 // Load this again, if it's used by the local context below. | |
| 319 __ ld(a3, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); | |
| 320 } else { | |
| 321 __ mov(a3, a1); | |
| 322 } | |
| 323 // Receiver is just before the parameters on the caller's stack. | |
| 324 int num_parameters = info->scope()->num_parameters(); | |
| 325 int offset = num_parameters * kPointerSize; | |
| 326 __ Daddu(a2, fp, | |
| 327 Operand(StandardFrameConstants::kCallerSPOffset + offset)); | |
| 328 __ li(a1, Operand(Smi::FromInt(num_parameters))); | |
| 329 __ Push(a3, a2, a1); | |
| 330 | |
| 331 // Arguments to ArgumentsAccessStub: | |
| 332 // function, receiver address, parameter count. | |
| 333 // The stub will rewrite receiever and parameter count if the previous | |
| 334 // stack frame was an arguments adapter frame. | |
| 335 ArgumentsAccessStub::Type type; | |
| 336 if (is_strict(language_mode()) || !is_simple_parameter_list()) { | |
| 337 type = ArgumentsAccessStub::NEW_STRICT; | |
| 338 } else if (function()->has_duplicate_parameters()) { | |
| 339 type = ArgumentsAccessStub::NEW_SLOPPY_SLOW; | |
| 340 } else { | |
| 341 type = ArgumentsAccessStub::NEW_SLOPPY_FAST; | |
| 342 } | |
| 343 ArgumentsAccessStub stub(isolate(), type); | |
| 344 __ CallStub(&stub); | |
| 345 | |
| 346 SetVar(arguments, v0, a1, a2); | |
| 347 } | |
| 348 | |
| 349 if (FLAG_trace) { | |
| 350 __ CallRuntime(Runtime::kTraceEnter, 0); | |
| 351 } | |
| 352 // Visit the declarations and body unless there is an illegal | |
| 353 // redeclaration. | |
| 354 if (scope()->HasIllegalRedeclaration()) { | |
| 355 Comment cmnt(masm_, "[ Declarations"); | |
| 356 scope()->VisitIllegalRedeclaration(this); | |
| 357 | |
| 358 } else { | |
| 359 PrepareForBailoutForId(BailoutId::FunctionEntry(), NO_REGISTERS); | |
| 360 { Comment cmnt(masm_, "[ Declarations"); | |
| 361 VisitDeclarations(scope()->declarations()); | |
| 362 } | |
| 363 { Comment cmnt(masm_, "[ Stack check"); | |
| 364 PrepareForBailoutForId(BailoutId::Declarations(), NO_REGISTERS); | |
| 365 Label ok; | |
| 366 __ LoadRoot(at, Heap::kStackLimitRootIndex); | |
| 367 __ Branch(&ok, hs, sp, Operand(at)); | |
| 368 Handle<Code> stack_check = isolate()->builtins()->StackCheck(); | |
| 369 PredictableCodeSizeScope predictable(masm_, | |
| 370 masm_->CallSize(stack_check, RelocInfo::CODE_TARGET)); | |
| 371 __ Call(stack_check, RelocInfo::CODE_TARGET); | |
| 372 __ bind(&ok); | |
| 373 } | |
| 374 | |
| 375 { Comment cmnt(masm_, "[ Body"); | |
| 376 DCHECK(loop_depth() == 0); | |
| 377 | |
| 378 VisitStatements(function()->body()); | |
| 379 | |
| 380 DCHECK(loop_depth() == 0); | |
| 381 } | |
| 382 } | |
| 383 | |
| 384 // Always emit a 'return undefined' in case control fell off the end of | |
| 385 // the body. | |
| 386 { Comment cmnt(masm_, "[ return <undefined>;"); | |
| 387 __ LoadRoot(v0, Heap::kUndefinedValueRootIndex); | |
| 388 } | |
| 389 EmitReturnSequence(); | |
| 390 } | |
| 391 | |
| 392 | |
| 393 void FullCodeGenerator::ClearAccumulator() { | |
| 394 DCHECK(Smi::FromInt(0) == 0); | |
| 395 __ mov(v0, zero_reg); | |
| 396 } | |
| 397 | |
| 398 | |
| 399 void FullCodeGenerator::EmitProfilingCounterDecrement(int delta) { | |
| 400 __ li(a2, Operand(profiling_counter_)); | |
| 401 __ ld(a3, FieldMemOperand(a2, Cell::kValueOffset)); | |
| 402 __ Dsubu(a3, a3, Operand(Smi::FromInt(delta))); | |
| 403 __ sd(a3, FieldMemOperand(a2, Cell::kValueOffset)); | |
| 404 } | |
| 405 | |
| 406 | |
| 407 void FullCodeGenerator::EmitProfilingCounterReset() { | |
| 408 int reset_value = FLAG_interrupt_budget; | |
| 409 if (info_->is_debug()) { | |
| 410 // Detect debug break requests as soon as possible. | |
| 411 reset_value = FLAG_interrupt_budget >> 4; | |
| 412 } | |
| 413 __ li(a2, Operand(profiling_counter_)); | |
| 414 __ li(a3, Operand(Smi::FromInt(reset_value))); | |
| 415 __ sd(a3, FieldMemOperand(a2, Cell::kValueOffset)); | |
| 416 } | |
| 417 | |
| 418 | |
| 419 void FullCodeGenerator::EmitBackEdgeBookkeeping(IterationStatement* stmt, | |
| 420 Label* back_edge_target) { | |
| 421 // The generated code is used in Deoptimizer::PatchStackCheckCodeAt so we need | |
| 422 // to make sure it is constant. Branch may emit a skip-or-jump sequence | |
| 423 // instead of the normal Branch. It seems that the "skip" part of that | |
| 424 // sequence is about as long as this Branch would be so it is safe to ignore | |
| 425 // that. | |
| 426 Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); | |
| 427 Comment cmnt(masm_, "[ Back edge bookkeeping"); | |
| 428 Label ok; | |
| 429 DCHECK(back_edge_target->is_bound()); | |
| 430 int distance = masm_->SizeOfCodeGeneratedSince(back_edge_target); | |
| 431 int weight = Min(kMaxBackEdgeWeight, | |
| 432 Max(1, distance / kCodeSizeMultiplier)); | |
| 433 EmitProfilingCounterDecrement(weight); | |
| 434 __ slt(at, a3, zero_reg); | |
| 435 __ beq(at, zero_reg, &ok); | |
| 436 // Call will emit a li t9 first, so it is safe to use the delay slot. | |
| 437 __ Call(isolate()->builtins()->InterruptCheck(), RelocInfo::CODE_TARGET); | |
| 438 // Record a mapping of this PC offset to the OSR id. This is used to find | |
| 439 // the AST id from the unoptimized code in order to use it as a key into | |
| 440 // the deoptimization input data found in the optimized code. | |
| 441 RecordBackEdge(stmt->OsrEntryId()); | |
| 442 EmitProfilingCounterReset(); | |
| 443 | |
| 444 __ bind(&ok); | |
| 445 PrepareForBailoutForId(stmt->EntryId(), NO_REGISTERS); | |
| 446 // Record a mapping of the OSR id to this PC. This is used if the OSR | |
| 447 // entry becomes the target of a bailout. We don't expect it to be, but | |
| 448 // we want it to work if it is. | |
| 449 PrepareForBailoutForId(stmt->OsrEntryId(), NO_REGISTERS); | |
| 450 } | |
| 451 | |
| 452 | |
| 453 void FullCodeGenerator::EmitReturnSequence() { | |
| 454 Comment cmnt(masm_, "[ Return sequence"); | |
| 455 if (return_label_.is_bound()) { | |
| 456 __ Branch(&return_label_); | |
| 457 } else { | |
| 458 __ bind(&return_label_); | |
| 459 if (FLAG_trace) { | |
| 460 // Push the return value on the stack as the parameter. | |
| 461 // Runtime::TraceExit returns its parameter in v0. | |
| 462 __ push(v0); | |
| 463 __ CallRuntime(Runtime::kTraceExit, 1); | |
| 464 } | |
| 465 // Pretend that the exit is a backwards jump to the entry. | |
| 466 int weight = 1; | |
| 467 if (info_->ShouldSelfOptimize()) { | |
| 468 weight = FLAG_interrupt_budget / FLAG_self_opt_count; | |
| 469 } else { | |
| 470 int distance = masm_->pc_offset(); | |
| 471 weight = Min(kMaxBackEdgeWeight, | |
| 472 Max(1, distance / kCodeSizeMultiplier)); | |
| 473 } | |
| 474 EmitProfilingCounterDecrement(weight); | |
| 475 Label ok; | |
| 476 __ Branch(&ok, ge, a3, Operand(zero_reg)); | |
| 477 __ push(v0); | |
| 478 __ Call(isolate()->builtins()->InterruptCheck(), | |
| 479 RelocInfo::CODE_TARGET); | |
| 480 __ pop(v0); | |
| 481 EmitProfilingCounterReset(); | |
| 482 __ bind(&ok); | |
| 483 | |
| 484 // Make sure that the constant pool is not emitted inside of the return | |
| 485 // sequence. | |
| 486 { Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); | |
| 487 // Here we use masm_-> instead of the __ macro to avoid the code coverage | |
| 488 // tool from instrumenting as we rely on the code size here. | |
| 489 int32_t arg_count = info_->scope()->num_parameters() + 1; | |
| 490 int32_t sp_delta = arg_count * kPointerSize; | |
| 491 SetReturnPosition(function()); | |
| 492 masm_->mov(sp, fp); | |
| 493 int no_frame_start = masm_->pc_offset(); | |
| 494 masm_->MultiPop(static_cast<RegList>(fp.bit() | ra.bit())); | |
| 495 masm_->Daddu(sp, sp, Operand(sp_delta)); | |
| 496 masm_->Jump(ra); | |
| 497 info_->AddNoFrameRange(no_frame_start, masm_->pc_offset()); | |
| 498 } | |
| 499 } | |
| 500 } | |
| 501 | |
| 502 | |
| 503 void FullCodeGenerator::StackValueContext::Plug(Variable* var) const { | |
| 504 DCHECK(var->IsStackAllocated() || var->IsContextSlot()); | |
| 505 codegen()->GetVar(result_register(), var); | |
| 506 __ push(result_register()); | |
| 507 } | |
| 508 | |
| 509 | |
| 510 void FullCodeGenerator::EffectContext::Plug(Heap::RootListIndex index) const { | |
| 511 } | |
| 512 | |
| 513 | |
| 514 void FullCodeGenerator::AccumulatorValueContext::Plug( | |
| 515 Heap::RootListIndex index) const { | |
| 516 __ LoadRoot(result_register(), index); | |
| 517 } | |
| 518 | |
| 519 | |
| 520 void FullCodeGenerator::StackValueContext::Plug( | |
| 521 Heap::RootListIndex index) const { | |
| 522 __ LoadRoot(result_register(), index); | |
| 523 __ push(result_register()); | |
| 524 } | |
| 525 | |
| 526 | |
| 527 void FullCodeGenerator::TestContext::Plug(Heap::RootListIndex index) const { | |
| 528 codegen()->PrepareForBailoutBeforeSplit(condition(), | |
| 529 true, | |
| 530 true_label_, | |
| 531 false_label_); | |
| 532 if (index == Heap::kUndefinedValueRootIndex || | |
| 533 index == Heap::kNullValueRootIndex || | |
| 534 index == Heap::kFalseValueRootIndex) { | |
| 535 if (false_label_ != fall_through_) __ Branch(false_label_); | |
| 536 } else if (index == Heap::kTrueValueRootIndex) { | |
| 537 if (true_label_ != fall_through_) __ Branch(true_label_); | |
| 538 } else { | |
| 539 __ LoadRoot(result_register(), index); | |
| 540 codegen()->DoTest(this); | |
| 541 } | |
| 542 } | |
| 543 | |
| 544 | |
| 545 void FullCodeGenerator::EffectContext::Plug(Handle<Object> lit) const { | |
| 546 } | |
| 547 | |
| 548 | |
| 549 void FullCodeGenerator::AccumulatorValueContext::Plug( | |
| 550 Handle<Object> lit) const { | |
| 551 __ li(result_register(), Operand(lit)); | |
| 552 } | |
| 553 | |
| 554 | |
| 555 void FullCodeGenerator::StackValueContext::Plug(Handle<Object> lit) const { | |
| 556 // Immediates cannot be pushed directly. | |
| 557 __ li(result_register(), Operand(lit)); | |
| 558 __ push(result_register()); | |
| 559 } | |
| 560 | |
| 561 | |
| 562 void FullCodeGenerator::TestContext::Plug(Handle<Object> lit) const { | |
| 563 codegen()->PrepareForBailoutBeforeSplit(condition(), | |
| 564 true, | |
| 565 true_label_, | |
| 566 false_label_); | |
| 567 DCHECK(!lit->IsUndetectableObject()); // There are no undetectable literals. | |
| 568 if (lit->IsUndefined() || lit->IsNull() || lit->IsFalse()) { | |
| 569 if (false_label_ != fall_through_) __ Branch(false_label_); | |
| 570 } else if (lit->IsTrue() || lit->IsJSObject()) { | |
| 571 if (true_label_ != fall_through_) __ Branch(true_label_); | |
| 572 } else if (lit->IsString()) { | |
| 573 if (String::cast(*lit)->length() == 0) { | |
| 574 if (false_label_ != fall_through_) __ Branch(false_label_); | |
| 575 } else { | |
| 576 if (true_label_ != fall_through_) __ Branch(true_label_); | |
| 577 } | |
| 578 } else if (lit->IsSmi()) { | |
| 579 if (Smi::cast(*lit)->value() == 0) { | |
| 580 if (false_label_ != fall_through_) __ Branch(false_label_); | |
| 581 } else { | |
| 582 if (true_label_ != fall_through_) __ Branch(true_label_); | |
| 583 } | |
| 584 } else { | |
| 585 // For simplicity we always test the accumulator register. | |
| 586 __ li(result_register(), Operand(lit)); | |
| 587 codegen()->DoTest(this); | |
| 588 } | |
| 589 } | |
| 590 | |
| 591 | |
| 592 void FullCodeGenerator::EffectContext::DropAndPlug(int count, | |
| 593 Register reg) const { | |
| 594 DCHECK(count > 0); | |
| 595 __ Drop(count); | |
| 596 } | |
| 597 | |
| 598 | |
| 599 void FullCodeGenerator::AccumulatorValueContext::DropAndPlug( | |
| 600 int count, | |
| 601 Register reg) const { | |
| 602 DCHECK(count > 0); | |
| 603 __ Drop(count); | |
| 604 __ Move(result_register(), reg); | |
| 605 } | |
| 606 | |
| 607 | |
| 608 void FullCodeGenerator::StackValueContext::DropAndPlug(int count, | |
| 609 Register reg) const { | |
| 610 DCHECK(count > 0); | |
| 611 if (count > 1) __ Drop(count - 1); | |
| 612 __ sd(reg, MemOperand(sp, 0)); | |
| 613 } | |
| 614 | |
| 615 | |
| 616 void FullCodeGenerator::TestContext::DropAndPlug(int count, | |
| 617 Register reg) const { | |
| 618 DCHECK(count > 0); | |
| 619 // For simplicity we always test the accumulator register. | |
| 620 __ Drop(count); | |
| 621 __ Move(result_register(), reg); | |
| 622 codegen()->PrepareForBailoutBeforeSplit(condition(), false, NULL, NULL); | |
| 623 codegen()->DoTest(this); | |
| 624 } | |
| 625 | |
| 626 | |
| 627 void FullCodeGenerator::EffectContext::Plug(Label* materialize_true, | |
| 628 Label* materialize_false) const { | |
| 629 DCHECK(materialize_true == materialize_false); | |
| 630 __ bind(materialize_true); | |
| 631 } | |
| 632 | |
| 633 | |
| 634 void FullCodeGenerator::AccumulatorValueContext::Plug( | |
| 635 Label* materialize_true, | |
| 636 Label* materialize_false) const { | |
| 637 Label done; | |
| 638 __ bind(materialize_true); | |
| 639 __ LoadRoot(result_register(), Heap::kTrueValueRootIndex); | |
| 640 __ Branch(&done); | |
| 641 __ bind(materialize_false); | |
| 642 __ LoadRoot(result_register(), Heap::kFalseValueRootIndex); | |
| 643 __ bind(&done); | |
| 644 } | |
| 645 | |
| 646 | |
| 647 void FullCodeGenerator::StackValueContext::Plug( | |
| 648 Label* materialize_true, | |
| 649 Label* materialize_false) const { | |
| 650 Label done; | |
| 651 __ bind(materialize_true); | |
| 652 __ LoadRoot(at, Heap::kTrueValueRootIndex); | |
| 653 // Push the value as the following branch can clobber at in long branch mode. | |
| 654 __ push(at); | |
| 655 __ Branch(&done); | |
| 656 __ bind(materialize_false); | |
| 657 __ LoadRoot(at, Heap::kFalseValueRootIndex); | |
| 658 __ push(at); | |
| 659 __ bind(&done); | |
| 660 } | |
| 661 | |
| 662 | |
| 663 void FullCodeGenerator::TestContext::Plug(Label* materialize_true, | |
| 664 Label* materialize_false) const { | |
| 665 DCHECK(materialize_true == true_label_); | |
| 666 DCHECK(materialize_false == false_label_); | |
| 667 } | |
| 668 | |
| 669 | |
| 670 void FullCodeGenerator::AccumulatorValueContext::Plug(bool flag) const { | |
| 671 Heap::RootListIndex value_root_index = | |
| 672 flag ? Heap::kTrueValueRootIndex : Heap::kFalseValueRootIndex; | |
| 673 __ LoadRoot(result_register(), value_root_index); | |
| 674 } | |
| 675 | |
| 676 | |
| 677 void FullCodeGenerator::StackValueContext::Plug(bool flag) const { | |
| 678 Heap::RootListIndex value_root_index = | |
| 679 flag ? Heap::kTrueValueRootIndex : Heap::kFalseValueRootIndex; | |
| 680 __ LoadRoot(at, value_root_index); | |
| 681 __ push(at); | |
| 682 } | |
| 683 | |
| 684 | |
| 685 void FullCodeGenerator::TestContext::Plug(bool flag) const { | |
| 686 codegen()->PrepareForBailoutBeforeSplit(condition(), | |
| 687 true, | |
| 688 true_label_, | |
| 689 false_label_); | |
| 690 if (flag) { | |
| 691 if (true_label_ != fall_through_) __ Branch(true_label_); | |
| 692 } else { | |
| 693 if (false_label_ != fall_through_) __ Branch(false_label_); | |
| 694 } | |
| 695 } | |
| 696 | |
| 697 | |
| 698 void FullCodeGenerator::DoTest(Expression* condition, | |
| 699 Label* if_true, | |
| 700 Label* if_false, | |
| 701 Label* fall_through) { | |
| 702 __ mov(a0, result_register()); | |
| 703 Handle<Code> ic = ToBooleanStub::GetUninitialized(isolate()); | |
| 704 CallIC(ic, condition->test_id()); | |
| 705 __ mov(at, zero_reg); | |
| 706 Split(ne, v0, Operand(at), if_true, if_false, fall_through); | |
| 707 } | |
| 708 | |
| 709 | |
| 710 void FullCodeGenerator::Split(Condition cc, | |
| 711 Register lhs, | |
| 712 const Operand& rhs, | |
| 713 Label* if_true, | |
| 714 Label* if_false, | |
| 715 Label* fall_through) { | |
| 716 if (if_false == fall_through) { | |
| 717 __ Branch(if_true, cc, lhs, rhs); | |
| 718 } else if (if_true == fall_through) { | |
| 719 __ Branch(if_false, NegateCondition(cc), lhs, rhs); | |
| 720 } else { | |
| 721 __ Branch(if_true, cc, lhs, rhs); | |
| 722 __ Branch(if_false); | |
| 723 } | |
| 724 } | |
| 725 | |
| 726 | |
| 727 MemOperand FullCodeGenerator::StackOperand(Variable* var) { | |
| 728 DCHECK(var->IsStackAllocated()); | |
| 729 // Offset is negative because higher indexes are at lower addresses. | |
| 730 int offset = -var->index() * kPointerSize; | |
| 731 // Adjust by a (parameter or local) base offset. | |
| 732 if (var->IsParameter()) { | |
| 733 offset += (info_->scope()->num_parameters() + 1) * kPointerSize; | |
| 734 } else { | |
| 735 offset += JavaScriptFrameConstants::kLocal0Offset; | |
| 736 } | |
| 737 return MemOperand(fp, offset); | |
| 738 } | |
| 739 | |
| 740 | |
| 741 MemOperand FullCodeGenerator::VarOperand(Variable* var, Register scratch) { | |
| 742 DCHECK(var->IsContextSlot() || var->IsStackAllocated()); | |
| 743 if (var->IsContextSlot()) { | |
| 744 int context_chain_length = scope()->ContextChainLength(var->scope()); | |
| 745 __ LoadContext(scratch, context_chain_length); | |
| 746 return ContextOperand(scratch, var->index()); | |
| 747 } else { | |
| 748 return StackOperand(var); | |
| 749 } | |
| 750 } | |
| 751 | |
| 752 | |
| 753 void FullCodeGenerator::GetVar(Register dest, Variable* var) { | |
| 754 // Use destination as scratch. | |
| 755 MemOperand location = VarOperand(var, dest); | |
| 756 __ ld(dest, location); | |
| 757 } | |
| 758 | |
| 759 | |
| 760 void FullCodeGenerator::SetVar(Variable* var, | |
| 761 Register src, | |
| 762 Register scratch0, | |
| 763 Register scratch1) { | |
| 764 DCHECK(var->IsContextSlot() || var->IsStackAllocated()); | |
| 765 DCHECK(!scratch0.is(src)); | |
| 766 DCHECK(!scratch0.is(scratch1)); | |
| 767 DCHECK(!scratch1.is(src)); | |
| 768 MemOperand location = VarOperand(var, scratch0); | |
| 769 __ sd(src, location); | |
| 770 // Emit the write barrier code if the location is in the heap. | |
| 771 if (var->IsContextSlot()) { | |
| 772 __ RecordWriteContextSlot(scratch0, | |
| 773 location.offset(), | |
| 774 src, | |
| 775 scratch1, | |
| 776 kRAHasBeenSaved, | |
| 777 kDontSaveFPRegs); | |
| 778 } | |
| 779 } | |
| 780 | |
| 781 | |
| 782 void FullCodeGenerator::PrepareForBailoutBeforeSplit(Expression* expr, | |
| 783 bool should_normalize, | |
| 784 Label* if_true, | |
| 785 Label* if_false) { | |
| 786 // Only prepare for bailouts before splits if we're in a test | |
| 787 // context. Otherwise, we let the Visit function deal with the | |
| 788 // preparation to avoid preparing with the same AST id twice. | |
| 789 if (!context()->IsTest() || !info_->IsOptimizable()) return; | |
| 790 | |
| 791 Label skip; | |
| 792 if (should_normalize) __ Branch(&skip); | |
| 793 PrepareForBailout(expr, TOS_REG); | |
| 794 if (should_normalize) { | |
| 795 __ LoadRoot(a4, Heap::kTrueValueRootIndex); | |
| 796 Split(eq, a0, Operand(a4), if_true, if_false, NULL); | |
| 797 __ bind(&skip); | |
| 798 } | |
| 799 } | |
| 800 | |
| 801 | |
| 802 void FullCodeGenerator::EmitDebugCheckDeclarationContext(Variable* variable) { | |
| 803 // The variable in the declaration always resides in the current function | |
| 804 // context. | |
| 805 DCHECK_EQ(0, scope()->ContextChainLength(variable->scope())); | |
| 806 if (generate_debug_code_) { | |
| 807 // Check that we're not inside a with or catch context. | |
| 808 __ ld(a1, FieldMemOperand(cp, HeapObject::kMapOffset)); | |
| 809 __ LoadRoot(a4, Heap::kWithContextMapRootIndex); | |
| 810 __ Check(ne, kDeclarationInWithContext, | |
| 811 a1, Operand(a4)); | |
| 812 __ LoadRoot(a4, Heap::kCatchContextMapRootIndex); | |
| 813 __ Check(ne, kDeclarationInCatchContext, | |
| 814 a1, Operand(a4)); | |
| 815 } | |
| 816 } | |
| 817 | |
| 818 | |
| 819 void FullCodeGenerator::VisitVariableDeclaration( | |
| 820 VariableDeclaration* declaration) { | |
| 821 // If it was not possible to allocate the variable at compile time, we | |
| 822 // need to "declare" it at runtime to make sure it actually exists in the | |
| 823 // local context. | |
| 824 VariableProxy* proxy = declaration->proxy(); | |
| 825 VariableMode mode = declaration->mode(); | |
| 826 Variable* variable = proxy->var(); | |
| 827 bool hole_init = mode == LET || mode == CONST || mode == CONST_LEGACY; | |
| 828 switch (variable->location()) { | |
| 829 case VariableLocation::GLOBAL: | |
| 830 case VariableLocation::UNALLOCATED: | |
| 831 globals_->Add(variable->name(), zone()); | |
| 832 globals_->Add(variable->binding_needs_init() | |
| 833 ? isolate()->factory()->the_hole_value() | |
| 834 : isolate()->factory()->undefined_value(), | |
| 835 zone()); | |
| 836 break; | |
| 837 | |
| 838 case VariableLocation::PARAMETER: | |
| 839 case VariableLocation::LOCAL: | |
| 840 if (hole_init) { | |
| 841 Comment cmnt(masm_, "[ VariableDeclaration"); | |
| 842 __ LoadRoot(a4, Heap::kTheHoleValueRootIndex); | |
| 843 __ sd(a4, StackOperand(variable)); | |
| 844 } | |
| 845 break; | |
| 846 | |
| 847 case VariableLocation::CONTEXT: | |
| 848 if (hole_init) { | |
| 849 Comment cmnt(masm_, "[ VariableDeclaration"); | |
| 850 EmitDebugCheckDeclarationContext(variable); | |
| 851 __ LoadRoot(at, Heap::kTheHoleValueRootIndex); | |
| 852 __ sd(at, ContextOperand(cp, variable->index())); | |
| 853 // No write barrier since the_hole_value is in old space. | |
| 854 PrepareForBailoutForId(proxy->id(), NO_REGISTERS); | |
| 855 } | |
| 856 break; | |
| 857 | |
| 858 case VariableLocation::LOOKUP: { | |
| 859 Comment cmnt(masm_, "[ VariableDeclaration"); | |
| 860 __ li(a2, Operand(variable->name())); | |
| 861 // Declaration nodes are always introduced in one of four modes. | |
| 862 DCHECK(IsDeclaredVariableMode(mode)); | |
| 863 PropertyAttributes attr = | |
| 864 IsImmutableVariableMode(mode) ? READ_ONLY : NONE; | |
| 865 __ li(a1, Operand(Smi::FromInt(attr))); | |
| 866 // Push initial value, if any. | |
| 867 // Note: For variables we must not push an initial value (such as | |
| 868 // 'undefined') because we may have a (legal) redeclaration and we | |
| 869 // must not destroy the current value. | |
| 870 if (hole_init) { | |
| 871 __ LoadRoot(a0, Heap::kTheHoleValueRootIndex); | |
| 872 __ Push(cp, a2, a1, a0); | |
| 873 } else { | |
| 874 DCHECK(Smi::FromInt(0) == 0); | |
| 875 __ mov(a0, zero_reg); // Smi::FromInt(0) indicates no initial value. | |
| 876 __ Push(cp, a2, a1, a0); | |
| 877 } | |
| 878 __ CallRuntime(Runtime::kDeclareLookupSlot, 4); | |
| 879 break; | |
| 880 } | |
| 881 } | |
| 882 } | |
| 883 | |
| 884 | |
| 885 void FullCodeGenerator::VisitFunctionDeclaration( | |
| 886 FunctionDeclaration* declaration) { | |
| 887 VariableProxy* proxy = declaration->proxy(); | |
| 888 Variable* variable = proxy->var(); | |
| 889 switch (variable->location()) { | |
| 890 case VariableLocation::GLOBAL: | |
| 891 case VariableLocation::UNALLOCATED: { | |
| 892 globals_->Add(variable->name(), zone()); | |
| 893 Handle<SharedFunctionInfo> function = | |
| 894 Compiler::GetSharedFunctionInfo(declaration->fun(), script(), info_); | |
| 895 // Check for stack-overflow exception. | |
| 896 if (function.is_null()) return SetStackOverflow(); | |
| 897 globals_->Add(function, zone()); | |
| 898 break; | |
| 899 } | |
| 900 | |
| 901 case VariableLocation::PARAMETER: | |
| 902 case VariableLocation::LOCAL: { | |
| 903 Comment cmnt(masm_, "[ FunctionDeclaration"); | |
| 904 VisitForAccumulatorValue(declaration->fun()); | |
| 905 __ sd(result_register(), StackOperand(variable)); | |
| 906 break; | |
| 907 } | |
| 908 | |
| 909 case VariableLocation::CONTEXT: { | |
| 910 Comment cmnt(masm_, "[ FunctionDeclaration"); | |
| 911 EmitDebugCheckDeclarationContext(variable); | |
| 912 VisitForAccumulatorValue(declaration->fun()); | |
| 913 __ sd(result_register(), ContextOperand(cp, variable->index())); | |
| 914 int offset = Context::SlotOffset(variable->index()); | |
| 915 // We know that we have written a function, which is not a smi. | |
| 916 __ RecordWriteContextSlot(cp, | |
| 917 offset, | |
| 918 result_register(), | |
| 919 a2, | |
| 920 kRAHasBeenSaved, | |
| 921 kDontSaveFPRegs, | |
| 922 EMIT_REMEMBERED_SET, | |
| 923 OMIT_SMI_CHECK); | |
| 924 PrepareForBailoutForId(proxy->id(), NO_REGISTERS); | |
| 925 break; | |
| 926 } | |
| 927 | |
| 928 case VariableLocation::LOOKUP: { | |
| 929 Comment cmnt(masm_, "[ FunctionDeclaration"); | |
| 930 __ li(a2, Operand(variable->name())); | |
| 931 __ li(a1, Operand(Smi::FromInt(NONE))); | |
| 932 __ Push(cp, a2, a1); | |
| 933 // Push initial value for function declaration. | |
| 934 VisitForStackValue(declaration->fun()); | |
| 935 __ CallRuntime(Runtime::kDeclareLookupSlot, 4); | |
| 936 break; | |
| 937 } | |
| 938 } | |
| 939 } | |
| 940 | |
| 941 | |
| 942 void FullCodeGenerator::DeclareGlobals(Handle<FixedArray> pairs) { | |
| 943 // Call the runtime to declare the globals. | |
| 944 // The context is the first argument. | |
| 945 __ li(a1, Operand(pairs)); | |
| 946 __ li(a0, Operand(Smi::FromInt(DeclareGlobalsFlags()))); | |
| 947 __ Push(cp, a1, a0); | |
| 948 __ CallRuntime(Runtime::kDeclareGlobals, 3); | |
| 949 // Return value is ignored. | |
| 950 } | |
| 951 | |
| 952 | |
| 953 void FullCodeGenerator::DeclareModules(Handle<FixedArray> descriptions) { | |
| 954 // Call the runtime to declare the modules. | |
| 955 __ Push(descriptions); | |
| 956 __ CallRuntime(Runtime::kDeclareModules, 1); | |
| 957 // Return value is ignored. | |
| 958 } | |
| 959 | |
| 960 | |
| 961 void FullCodeGenerator::VisitSwitchStatement(SwitchStatement* stmt) { | |
| 962 Comment cmnt(masm_, "[ SwitchStatement"); | |
| 963 Breakable nested_statement(this, stmt); | |
| 964 SetStatementPosition(stmt); | |
| 965 | |
| 966 // Keep the switch value on the stack until a case matches. | |
| 967 VisitForStackValue(stmt->tag()); | |
| 968 PrepareForBailoutForId(stmt->EntryId(), NO_REGISTERS); | |
| 969 | |
| 970 ZoneList<CaseClause*>* clauses = stmt->cases(); | |
| 971 CaseClause* default_clause = NULL; // Can occur anywhere in the list. | |
| 972 | |
| 973 Label next_test; // Recycled for each test. | |
| 974 // Compile all the tests with branches to their bodies. | |
| 975 for (int i = 0; i < clauses->length(); i++) { | |
| 976 CaseClause* clause = clauses->at(i); | |
| 977 clause->body_target()->Unuse(); | |
| 978 | |
| 979 // The default is not a test, but remember it as final fall through. | |
| 980 if (clause->is_default()) { | |
| 981 default_clause = clause; | |
| 982 continue; | |
| 983 } | |
| 984 | |
| 985 Comment cmnt(masm_, "[ Case comparison"); | |
| 986 __ bind(&next_test); | |
| 987 next_test.Unuse(); | |
| 988 | |
| 989 // Compile the label expression. | |
| 990 VisitForAccumulatorValue(clause->label()); | |
| 991 __ mov(a0, result_register()); // CompareStub requires args in a0, a1. | |
| 992 | |
| 993 // Perform the comparison as if via '==='. | |
| 994 __ ld(a1, MemOperand(sp, 0)); // Switch value. | |
| 995 bool inline_smi_code = ShouldInlineSmiCase(Token::EQ_STRICT); | |
| 996 JumpPatchSite patch_site(masm_); | |
| 997 if (inline_smi_code) { | |
| 998 Label slow_case; | |
| 999 __ or_(a2, a1, a0); | |
| 1000 patch_site.EmitJumpIfNotSmi(a2, &slow_case); | |
| 1001 | |
| 1002 __ Branch(&next_test, ne, a1, Operand(a0)); | |
| 1003 __ Drop(1); // Switch value is no longer needed. | |
| 1004 __ Branch(clause->body_target()); | |
| 1005 | |
| 1006 __ bind(&slow_case); | |
| 1007 } | |
| 1008 | |
| 1009 // Record position before stub call for type feedback. | |
| 1010 SetExpressionPosition(clause); | |
| 1011 Handle<Code> ic = CodeFactory::CompareIC(isolate(), Token::EQ_STRICT, | |
| 1012 strength(language_mode())).code(); | |
| 1013 CallIC(ic, clause->CompareId()); | |
| 1014 patch_site.EmitPatchInfo(); | |
| 1015 | |
| 1016 Label skip; | |
| 1017 __ Branch(&skip); | |
| 1018 PrepareForBailout(clause, TOS_REG); | |
| 1019 __ LoadRoot(at, Heap::kTrueValueRootIndex); | |
| 1020 __ Branch(&next_test, ne, v0, Operand(at)); | |
| 1021 __ Drop(1); | |
| 1022 __ Branch(clause->body_target()); | |
| 1023 __ bind(&skip); | |
| 1024 | |
| 1025 __ Branch(&next_test, ne, v0, Operand(zero_reg)); | |
| 1026 __ Drop(1); // Switch value is no longer needed. | |
| 1027 __ Branch(clause->body_target()); | |
| 1028 } | |
| 1029 | |
| 1030 // Discard the test value and jump to the default if present, otherwise to | |
| 1031 // the end of the statement. | |
| 1032 __ bind(&next_test); | |
| 1033 __ Drop(1); // Switch value is no longer needed. | |
| 1034 if (default_clause == NULL) { | |
| 1035 __ Branch(nested_statement.break_label()); | |
| 1036 } else { | |
| 1037 __ Branch(default_clause->body_target()); | |
| 1038 } | |
| 1039 | |
| 1040 // Compile all the case bodies. | |
| 1041 for (int i = 0; i < clauses->length(); i++) { | |
| 1042 Comment cmnt(masm_, "[ Case body"); | |
| 1043 CaseClause* clause = clauses->at(i); | |
| 1044 __ bind(clause->body_target()); | |
| 1045 PrepareForBailoutForId(clause->EntryId(), NO_REGISTERS); | |
| 1046 VisitStatements(clause->statements()); | |
| 1047 } | |
| 1048 | |
| 1049 __ bind(nested_statement.break_label()); | |
| 1050 PrepareForBailoutForId(stmt->ExitId(), NO_REGISTERS); | |
| 1051 } | |
| 1052 | |
| 1053 | |
| 1054 void FullCodeGenerator::VisitForInStatement(ForInStatement* stmt) { | |
| 1055 Comment cmnt(masm_, "[ ForInStatement"); | |
| 1056 SetStatementPosition(stmt, SKIP_BREAK); | |
| 1057 | |
| 1058 FeedbackVectorSlot slot = stmt->ForInFeedbackSlot(); | |
| 1059 | |
| 1060 Label loop, exit; | |
| 1061 ForIn loop_statement(this, stmt); | |
| 1062 increment_loop_depth(); | |
| 1063 | |
| 1064 // Get the object to enumerate over. If the object is null or undefined, skip | |
| 1065 // over the loop. See ECMA-262 version 5, section 12.6.4. | |
| 1066 SetExpressionAsStatementPosition(stmt->enumerable()); | |
| 1067 VisitForAccumulatorValue(stmt->enumerable()); | |
| 1068 __ mov(a0, result_register()); // Result as param to InvokeBuiltin below. | |
| 1069 __ LoadRoot(at, Heap::kUndefinedValueRootIndex); | |
| 1070 __ Branch(&exit, eq, a0, Operand(at)); | |
| 1071 Register null_value = a5; | |
| 1072 __ LoadRoot(null_value, Heap::kNullValueRootIndex); | |
| 1073 __ Branch(&exit, eq, a0, Operand(null_value)); | |
| 1074 PrepareForBailoutForId(stmt->PrepareId(), TOS_REG); | |
| 1075 __ mov(a0, v0); | |
| 1076 // Convert the object to a JS object. | |
| 1077 Label convert, done_convert; | |
| 1078 __ JumpIfSmi(a0, &convert); | |
| 1079 __ GetObjectType(a0, a1, a1); | |
| 1080 __ Branch(&done_convert, ge, a1, Operand(FIRST_SPEC_OBJECT_TYPE)); | |
| 1081 __ bind(&convert); | |
| 1082 __ push(a0); | |
| 1083 __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); | |
| 1084 __ mov(a0, v0); | |
| 1085 __ bind(&done_convert); | |
| 1086 PrepareForBailoutForId(stmt->ToObjectId(), TOS_REG); | |
| 1087 __ push(a0); | |
| 1088 | |
| 1089 // Check for proxies. | |
| 1090 Label call_runtime; | |
| 1091 STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_SPEC_OBJECT_TYPE); | |
| 1092 __ GetObjectType(a0, a1, a1); | |
| 1093 __ Branch(&call_runtime, le, a1, Operand(LAST_JS_PROXY_TYPE)); | |
| 1094 | |
| 1095 // Check cache validity in generated code. This is a fast case for | |
| 1096 // the JSObject::IsSimpleEnum cache validity checks. If we cannot | |
| 1097 // guarantee cache validity, call the runtime system to check cache | |
| 1098 // validity or get the property names in a fixed array. | |
| 1099 __ CheckEnumCache(null_value, &call_runtime); | |
| 1100 | |
| 1101 // The enum cache is valid. Load the map of the object being | |
| 1102 // iterated over and use the cache for the iteration. | |
| 1103 Label use_cache; | |
| 1104 __ ld(v0, FieldMemOperand(a0, HeapObject::kMapOffset)); | |
| 1105 __ Branch(&use_cache); | |
| 1106 | |
| 1107 // Get the set of properties to enumerate. | |
| 1108 __ bind(&call_runtime); | |
| 1109 __ push(a0); // Duplicate the enumerable object on the stack. | |
| 1110 __ CallRuntime(Runtime::kGetPropertyNamesFast, 1); | |
| 1111 PrepareForBailoutForId(stmt->EnumId(), TOS_REG); | |
| 1112 | |
| 1113 // If we got a map from the runtime call, we can do a fast | |
| 1114 // modification check. Otherwise, we got a fixed array, and we have | |
| 1115 // to do a slow check. | |
| 1116 Label fixed_array; | |
| 1117 __ ld(a2, FieldMemOperand(v0, HeapObject::kMapOffset)); | |
| 1118 __ LoadRoot(at, Heap::kMetaMapRootIndex); | |
| 1119 __ Branch(&fixed_array, ne, a2, Operand(at)); | |
| 1120 | |
| 1121 // We got a map in register v0. Get the enumeration cache from it. | |
| 1122 Label no_descriptors; | |
| 1123 __ bind(&use_cache); | |
| 1124 | |
| 1125 __ EnumLength(a1, v0); | |
| 1126 __ Branch(&no_descriptors, eq, a1, Operand(Smi::FromInt(0))); | |
| 1127 | |
| 1128 __ LoadInstanceDescriptors(v0, a2); | |
| 1129 __ ld(a2, FieldMemOperand(a2, DescriptorArray::kEnumCacheOffset)); | |
| 1130 __ ld(a2, FieldMemOperand(a2, DescriptorArray::kEnumCacheBridgeCacheOffset)); | |
| 1131 | |
| 1132 // Set up the four remaining stack slots. | |
| 1133 __ li(a0, Operand(Smi::FromInt(0))); | |
| 1134 // Push map, enumeration cache, enumeration cache length (as smi) and zero. | |
| 1135 __ Push(v0, a2, a1, a0); | |
| 1136 __ jmp(&loop); | |
| 1137 | |
| 1138 __ bind(&no_descriptors); | |
| 1139 __ Drop(1); | |
| 1140 __ jmp(&exit); | |
| 1141 | |
| 1142 // We got a fixed array in register v0. Iterate through that. | |
| 1143 Label non_proxy; | |
| 1144 __ bind(&fixed_array); | |
| 1145 | |
| 1146 __ li(a1, FeedbackVector()); | |
| 1147 __ li(a2, Operand(TypeFeedbackVector::MegamorphicSentinel(isolate()))); | |
| 1148 int vector_index = FeedbackVector()->GetIndex(slot); | |
| 1149 __ sd(a2, FieldMemOperand(a1, FixedArray::OffsetOfElementAt(vector_index))); | |
| 1150 | |
| 1151 __ li(a1, Operand(Smi::FromInt(1))); // Smi indicates slow check | |
| 1152 __ ld(a2, MemOperand(sp, 0 * kPointerSize)); // Get enumerated object | |
| 1153 STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_SPEC_OBJECT_TYPE); | |
| 1154 __ GetObjectType(a2, a3, a3); | |
| 1155 __ Branch(&non_proxy, gt, a3, Operand(LAST_JS_PROXY_TYPE)); | |
| 1156 __ li(a1, Operand(Smi::FromInt(0))); // Zero indicates proxy | |
| 1157 __ bind(&non_proxy); | |
| 1158 __ Push(a1, v0); // Smi and array | |
| 1159 __ ld(a1, FieldMemOperand(v0, FixedArray::kLengthOffset)); | |
| 1160 __ li(a0, Operand(Smi::FromInt(0))); | |
| 1161 __ Push(a1, a0); // Fixed array length (as smi) and initial index. | |
| 1162 | |
| 1163 // Generate code for doing the condition check. | |
| 1164 PrepareForBailoutForId(stmt->BodyId(), NO_REGISTERS); | |
| 1165 __ bind(&loop); | |
| 1166 SetExpressionAsStatementPosition(stmt->each()); | |
| 1167 | |
| 1168 // Load the current count to a0, load the length to a1. | |
| 1169 __ ld(a0, MemOperand(sp, 0 * kPointerSize)); | |
| 1170 __ ld(a1, MemOperand(sp, 1 * kPointerSize)); | |
| 1171 __ Branch(loop_statement.break_label(), hs, a0, Operand(a1)); | |
| 1172 | |
| 1173 // Get the current entry of the array into register a3. | |
| 1174 __ ld(a2, MemOperand(sp, 2 * kPointerSize)); | |
| 1175 __ Daddu(a2, a2, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); | |
| 1176 __ SmiScale(a4, a0, kPointerSizeLog2); | |
| 1177 __ daddu(a4, a2, a4); // Array base + scaled (smi) index. | |
| 1178 __ ld(a3, MemOperand(a4)); // Current entry. | |
| 1179 | |
| 1180 // Get the expected map from the stack or a smi in the | |
| 1181 // permanent slow case into register a2. | |
| 1182 __ ld(a2, MemOperand(sp, 3 * kPointerSize)); | |
| 1183 | |
| 1184 // Check if the expected map still matches that of the enumerable. | |
| 1185 // If not, we may have to filter the key. | |
| 1186 Label update_each; | |
| 1187 __ ld(a1, MemOperand(sp, 4 * kPointerSize)); | |
| 1188 __ ld(a4, FieldMemOperand(a1, HeapObject::kMapOffset)); | |
| 1189 __ Branch(&update_each, eq, a4, Operand(a2)); | |
| 1190 | |
| 1191 // For proxies, no filtering is done. | |
| 1192 // TODO(rossberg): What if only a prototype is a proxy? Not specified yet. | |
| 1193 DCHECK_EQ(static_cast<Smi*>(0), Smi::FromInt(0)); | |
| 1194 __ Branch(&update_each, eq, a2, Operand(zero_reg)); | |
| 1195 | |
| 1196 // Convert the entry to a string or (smi) 0 if it isn't a property | |
| 1197 // any more. If the property has been removed while iterating, we | |
| 1198 // just skip it. | |
| 1199 __ Push(a1, a3); // Enumerable and current entry. | |
| 1200 __ CallRuntime(Runtime::kForInFilter, 2); | |
| 1201 PrepareForBailoutForId(stmt->FilterId(), TOS_REG); | |
| 1202 __ mov(a3, result_register()); | |
| 1203 __ LoadRoot(at, Heap::kUndefinedValueRootIndex); | |
| 1204 __ Branch(loop_statement.continue_label(), eq, a3, Operand(at)); | |
| 1205 | |
| 1206 // Update the 'each' property or variable from the possibly filtered | |
| 1207 // entry in register a3. | |
| 1208 __ bind(&update_each); | |
| 1209 __ mov(result_register(), a3); | |
| 1210 // Perform the assignment as if via '='. | |
| 1211 { EffectContext context(this); | |
| 1212 EmitAssignment(stmt->each(), stmt->EachFeedbackSlot()); | |
| 1213 PrepareForBailoutForId(stmt->AssignmentId(), NO_REGISTERS); | |
| 1214 } | |
| 1215 | |
| 1216 // Generate code for the body of the loop. | |
| 1217 Visit(stmt->body()); | |
| 1218 | |
| 1219 // Generate code for the going to the next element by incrementing | |
| 1220 // the index (smi) stored on top of the stack. | |
| 1221 __ bind(loop_statement.continue_label()); | |
| 1222 __ pop(a0); | |
| 1223 __ Daddu(a0, a0, Operand(Smi::FromInt(1))); | |
| 1224 __ push(a0); | |
| 1225 | |
| 1226 EmitBackEdgeBookkeeping(stmt, &loop); | |
| 1227 __ Branch(&loop); | |
| 1228 | |
| 1229 // Remove the pointers stored on the stack. | |
| 1230 __ bind(loop_statement.break_label()); | |
| 1231 __ Drop(5); | |
| 1232 | |
| 1233 // Exit and decrement the loop depth. | |
| 1234 PrepareForBailoutForId(stmt->ExitId(), NO_REGISTERS); | |
| 1235 __ bind(&exit); | |
| 1236 decrement_loop_depth(); | |
| 1237 } | |
| 1238 | |
| 1239 | |
| 1240 void FullCodeGenerator::EmitNewClosure(Handle<SharedFunctionInfo> info, | |
| 1241 bool pretenure) { | |
| 1242 // Use the fast case closure allocation code that allocates in new | |
| 1243 // space for nested functions that don't need literals cloning. If | |
| 1244 // we're running with the --always-opt or the --prepare-always-opt | |
| 1245 // flag, we need to use the runtime function so that the new function | |
| 1246 // we are creating here gets a chance to have its code optimized and | |
| 1247 // doesn't just get a copy of the existing unoptimized code. | |
| 1248 if (!FLAG_always_opt && | |
| 1249 !FLAG_prepare_always_opt && | |
| 1250 !pretenure && | |
| 1251 scope()->is_function_scope() && | |
| 1252 info->num_literals() == 0) { | |
| 1253 FastNewClosureStub stub(isolate(), info->language_mode(), info->kind()); | |
| 1254 __ li(a2, Operand(info)); | |
| 1255 __ CallStub(&stub); | |
| 1256 } else { | |
| 1257 __ li(a0, Operand(info)); | |
| 1258 __ LoadRoot(a1, pretenure ? Heap::kTrueValueRootIndex | |
| 1259 : Heap::kFalseValueRootIndex); | |
| 1260 __ Push(cp, a0, a1); | |
| 1261 __ CallRuntime(Runtime::kNewClosure, 3); | |
| 1262 } | |
| 1263 context()->Plug(v0); | |
| 1264 } | |
| 1265 | |
| 1266 | |
| 1267 void FullCodeGenerator::EmitSetHomeObjectIfNeeded(Expression* initializer, | |
| 1268 int offset, | |
| 1269 FeedbackVectorICSlot slot) { | |
| 1270 if (NeedsHomeObject(initializer)) { | |
| 1271 __ ld(StoreDescriptor::ReceiverRegister(), MemOperand(sp)); | |
| 1272 __ li(StoreDescriptor::NameRegister(), | |
| 1273 Operand(isolate()->factory()->home_object_symbol())); | |
| 1274 __ ld(StoreDescriptor::ValueRegister(), | |
| 1275 MemOperand(sp, offset * kPointerSize)); | |
| 1276 if (FLAG_vector_stores) EmitLoadStoreICSlot(slot); | |
| 1277 CallStoreIC(); | |
| 1278 } | |
| 1279 } | |
| 1280 | |
| 1281 | |
| 1282 void FullCodeGenerator::EmitLoadGlobalCheckExtensions(VariableProxy* proxy, | |
| 1283 TypeofMode typeof_mode, | |
| 1284 Label* slow) { | |
| 1285 Register current = cp; | |
| 1286 Register next = a1; | |
| 1287 Register temp = a2; | |
| 1288 | |
| 1289 Scope* s = scope(); | |
| 1290 while (s != NULL) { | |
| 1291 if (s->num_heap_slots() > 0) { | |
| 1292 if (s->calls_sloppy_eval()) { | |
| 1293 // Check that extension is NULL. | |
| 1294 __ ld(temp, ContextOperand(current, Context::EXTENSION_INDEX)); | |
| 1295 __ Branch(slow, ne, temp, Operand(zero_reg)); | |
| 1296 } | |
| 1297 // Load next context in chain. | |
| 1298 __ ld(next, ContextOperand(current, Context::PREVIOUS_INDEX)); | |
| 1299 // Walk the rest of the chain without clobbering cp. | |
| 1300 current = next; | |
| 1301 } | |
| 1302 // If no outer scope calls eval, we do not need to check more | |
| 1303 // context extensions. | |
| 1304 if (!s->outer_scope_calls_sloppy_eval() || s->is_eval_scope()) break; | |
| 1305 s = s->outer_scope(); | |
| 1306 } | |
| 1307 | |
| 1308 if (s->is_eval_scope()) { | |
| 1309 Label loop, fast; | |
| 1310 if (!current.is(next)) { | |
| 1311 __ Move(next, current); | |
| 1312 } | |
| 1313 __ bind(&loop); | |
| 1314 // Terminate at native context. | |
| 1315 __ ld(temp, FieldMemOperand(next, HeapObject::kMapOffset)); | |
| 1316 __ LoadRoot(a4, Heap::kNativeContextMapRootIndex); | |
| 1317 __ Branch(&fast, eq, temp, Operand(a4)); | |
| 1318 // Check that extension is NULL. | |
| 1319 __ ld(temp, ContextOperand(next, Context::EXTENSION_INDEX)); | |
| 1320 __ Branch(slow, ne, temp, Operand(zero_reg)); | |
| 1321 // Load next context in chain. | |
| 1322 __ ld(next, ContextOperand(next, Context::PREVIOUS_INDEX)); | |
| 1323 __ Branch(&loop); | |
| 1324 __ bind(&fast); | |
| 1325 } | |
| 1326 | |
| 1327 // All extension objects were empty and it is safe to use a normal global | |
| 1328 // load machinery. | |
| 1329 EmitGlobalVariableLoad(proxy, typeof_mode); | |
| 1330 } | |
| 1331 | |
| 1332 | |
| 1333 MemOperand FullCodeGenerator::ContextSlotOperandCheckExtensions(Variable* var, | |
| 1334 Label* slow) { | |
| 1335 DCHECK(var->IsContextSlot()); | |
| 1336 Register context = cp; | |
| 1337 Register next = a3; | |
| 1338 Register temp = a4; | |
| 1339 | |
| 1340 for (Scope* s = scope(); s != var->scope(); s = s->outer_scope()) { | |
| 1341 if (s->num_heap_slots() > 0) { | |
| 1342 if (s->calls_sloppy_eval()) { | |
| 1343 // Check that extension is NULL. | |
| 1344 __ ld(temp, ContextOperand(context, Context::EXTENSION_INDEX)); | |
| 1345 __ Branch(slow, ne, temp, Operand(zero_reg)); | |
| 1346 } | |
| 1347 __ ld(next, ContextOperand(context, Context::PREVIOUS_INDEX)); | |
| 1348 // Walk the rest of the chain without clobbering cp. | |
| 1349 context = next; | |
| 1350 } | |
| 1351 } | |
| 1352 // Check that last extension is NULL. | |
| 1353 __ ld(temp, ContextOperand(context, Context::EXTENSION_INDEX)); | |
| 1354 __ Branch(slow, ne, temp, Operand(zero_reg)); | |
| 1355 | |
| 1356 // This function is used only for loads, not stores, so it's safe to | |
| 1357 // return an cp-based operand (the write barrier cannot be allowed to | |
| 1358 // destroy the cp register). | |
| 1359 return ContextOperand(context, var->index()); | |
| 1360 } | |
| 1361 | |
| 1362 | |
| 1363 void FullCodeGenerator::EmitDynamicLookupFastCase(VariableProxy* proxy, | |
| 1364 TypeofMode typeof_mode, | |
| 1365 Label* slow, Label* done) { | |
| 1366 // Generate fast-case code for variables that might be shadowed by | |
| 1367 // eval-introduced variables. Eval is used a lot without | |
| 1368 // introducing variables. In those cases, we do not want to | |
| 1369 // perform a runtime call for all variables in the scope | |
| 1370 // containing the eval. | |
| 1371 Variable* var = proxy->var(); | |
| 1372 if (var->mode() == DYNAMIC_GLOBAL) { | |
| 1373 EmitLoadGlobalCheckExtensions(proxy, typeof_mode, slow); | |
| 1374 __ Branch(done); | |
| 1375 } else if (var->mode() == DYNAMIC_LOCAL) { | |
| 1376 Variable* local = var->local_if_not_shadowed(); | |
| 1377 __ ld(v0, ContextSlotOperandCheckExtensions(local, slow)); | |
| 1378 if (local->mode() == LET || local->mode() == CONST || | |
| 1379 local->mode() == CONST_LEGACY) { | |
| 1380 __ LoadRoot(at, Heap::kTheHoleValueRootIndex); | |
| 1381 __ dsubu(at, v0, at); // Sub as compare: at == 0 on eq. | |
| 1382 if (local->mode() == CONST_LEGACY) { | |
| 1383 __ LoadRoot(a0, Heap::kUndefinedValueRootIndex); | |
| 1384 __ Movz(v0, a0, at); // Conditional move: return Undefined if TheHole. | |
| 1385 } else { // LET || CONST | |
| 1386 __ Branch(done, ne, at, Operand(zero_reg)); | |
| 1387 __ li(a0, Operand(var->name())); | |
| 1388 __ push(a0); | |
| 1389 __ CallRuntime(Runtime::kThrowReferenceError, 1); | |
| 1390 } | |
| 1391 } | |
| 1392 __ Branch(done); | |
| 1393 } | |
| 1394 } | |
| 1395 | |
| 1396 | |
| 1397 void FullCodeGenerator::EmitGlobalVariableLoad(VariableProxy* proxy, | |
| 1398 TypeofMode typeof_mode) { | |
| 1399 Variable* var = proxy->var(); | |
| 1400 DCHECK(var->IsUnallocatedOrGlobalSlot() || | |
| 1401 (var->IsLookupSlot() && var->mode() == DYNAMIC_GLOBAL)); | |
| 1402 if (var->IsGlobalSlot()) { | |
| 1403 DCHECK(var->index() > 0); | |
| 1404 DCHECK(var->IsStaticGlobalObjectProperty()); | |
| 1405 // Each var occupies two slots in the context: for reads and writes. | |
| 1406 int slot_index = var->index(); | |
| 1407 int depth = scope()->ContextChainLength(var->scope()); | |
| 1408 __ li(LoadGlobalViaContextDescriptor::DepthRegister(), | |
| 1409 Operand(Smi::FromInt(depth))); | |
| 1410 __ li(LoadGlobalViaContextDescriptor::SlotRegister(), | |
| 1411 Operand(Smi::FromInt(slot_index))); | |
| 1412 __ li(LoadGlobalViaContextDescriptor::NameRegister(), Operand(var->name())); | |
| 1413 LoadGlobalViaContextStub stub(isolate(), depth); | |
| 1414 __ CallStub(&stub); | |
| 1415 | |
| 1416 } else { | |
| 1417 __ ld(LoadDescriptor::ReceiverRegister(), GlobalObjectOperand()); | |
| 1418 __ li(LoadDescriptor::NameRegister(), Operand(var->name())); | |
| 1419 __ li(LoadDescriptor::SlotRegister(), | |
| 1420 Operand(SmiFromSlot(proxy->VariableFeedbackSlot()))); | |
| 1421 CallLoadIC(typeof_mode); | |
| 1422 } | |
| 1423 } | |
| 1424 | |
| 1425 | |
| 1426 void FullCodeGenerator::EmitVariableLoad(VariableProxy* proxy, | |
| 1427 TypeofMode typeof_mode) { | |
| 1428 // Record position before possible IC call. | |
| 1429 SetExpressionPosition(proxy); | |
| 1430 PrepareForBailoutForId(proxy->BeforeId(), NO_REGISTERS); | |
| 1431 Variable* var = proxy->var(); | |
| 1432 | |
| 1433 // Three cases: global variables, lookup variables, and all other types of | |
| 1434 // variables. | |
| 1435 switch (var->location()) { | |
| 1436 case VariableLocation::GLOBAL: | |
| 1437 case VariableLocation::UNALLOCATED: { | |
| 1438 Comment cmnt(masm_, "[ Global variable"); | |
| 1439 EmitGlobalVariableLoad(proxy, typeof_mode); | |
| 1440 context()->Plug(v0); | |
| 1441 break; | |
| 1442 } | |
| 1443 | |
| 1444 case VariableLocation::PARAMETER: | |
| 1445 case VariableLocation::LOCAL: | |
| 1446 case VariableLocation::CONTEXT: { | |
| 1447 DCHECK_EQ(NOT_INSIDE_TYPEOF, typeof_mode); | |
| 1448 Comment cmnt(masm_, var->IsContextSlot() ? "[ Context variable" | |
| 1449 : "[ Stack variable"); | |
| 1450 if (var->binding_needs_init()) { | |
| 1451 // var->scope() may be NULL when the proxy is located in eval code and | |
| 1452 // refers to a potential outside binding. Currently those bindings are | |
| 1453 // always looked up dynamically, i.e. in that case | |
| 1454 // var->location() == LOOKUP. | |
| 1455 // always holds. | |
| 1456 DCHECK(var->scope() != NULL); | |
| 1457 | |
| 1458 // Check if the binding really needs an initialization check. The check | |
| 1459 // can be skipped in the following situation: we have a LET or CONST | |
| 1460 // binding in harmony mode, both the Variable and the VariableProxy have | |
| 1461 // the same declaration scope (i.e. they are both in global code, in the | |
| 1462 // same function or in the same eval code) and the VariableProxy is in | |
| 1463 // the source physically located after the initializer of the variable. | |
| 1464 // | |
| 1465 // We cannot skip any initialization checks for CONST in non-harmony | |
| 1466 // mode because const variables may be declared but never initialized: | |
| 1467 // if (false) { const x; }; var y = x; | |
| 1468 // | |
| 1469 // The condition on the declaration scopes is a conservative check for | |
| 1470 // nested functions that access a binding and are called before the | |
| 1471 // binding is initialized: | |
| 1472 // function() { f(); let x = 1; function f() { x = 2; } } | |
| 1473 // | |
| 1474 bool skip_init_check; | |
| 1475 if (var->scope()->DeclarationScope() != scope()->DeclarationScope()) { | |
| 1476 skip_init_check = false; | |
| 1477 } else if (var->is_this()) { | |
| 1478 CHECK(info_->function() != nullptr && | |
| 1479 (info_->function()->kind() & kSubclassConstructor) != 0); | |
| 1480 // TODO(dslomov): implement 'this' hole check elimination. | |
| 1481 skip_init_check = false; | |
| 1482 } else { | |
| 1483 // Check that we always have valid source position. | |
| 1484 DCHECK(var->initializer_position() != RelocInfo::kNoPosition); | |
| 1485 DCHECK(proxy->position() != RelocInfo::kNoPosition); | |
| 1486 skip_init_check = var->mode() != CONST_LEGACY && | |
| 1487 var->initializer_position() < proxy->position(); | |
| 1488 } | |
| 1489 | |
| 1490 if (!skip_init_check) { | |
| 1491 // Let and const need a read barrier. | |
| 1492 GetVar(v0, var); | |
| 1493 __ LoadRoot(at, Heap::kTheHoleValueRootIndex); | |
| 1494 __ dsubu(at, v0, at); // Sub as compare: at == 0 on eq. | |
| 1495 if (var->mode() == LET || var->mode() == CONST) { | |
| 1496 // Throw a reference error when using an uninitialized let/const | |
| 1497 // binding in harmony mode. | |
| 1498 Label done; | |
| 1499 __ Branch(&done, ne, at, Operand(zero_reg)); | |
| 1500 __ li(a0, Operand(var->name())); | |
| 1501 __ push(a0); | |
| 1502 __ CallRuntime(Runtime::kThrowReferenceError, 1); | |
| 1503 __ bind(&done); | |
| 1504 } else { | |
| 1505 // Uninitalized const bindings outside of harmony mode are unholed. | |
| 1506 DCHECK(var->mode() == CONST_LEGACY); | |
| 1507 __ LoadRoot(a0, Heap::kUndefinedValueRootIndex); | |
| 1508 __ Movz(v0, a0, at); // Conditional move: Undefined if TheHole. | |
| 1509 } | |
| 1510 context()->Plug(v0); | |
| 1511 break; | |
| 1512 } | |
| 1513 } | |
| 1514 context()->Plug(var); | |
| 1515 break; | |
| 1516 } | |
| 1517 | |
| 1518 case VariableLocation::LOOKUP: { | |
| 1519 Comment cmnt(masm_, "[ Lookup variable"); | |
| 1520 Label done, slow; | |
| 1521 // Generate code for loading from variables potentially shadowed | |
| 1522 // by eval-introduced variables. | |
| 1523 EmitDynamicLookupFastCase(proxy, typeof_mode, &slow, &done); | |
| 1524 __ bind(&slow); | |
| 1525 __ li(a1, Operand(var->name())); | |
| 1526 __ Push(cp, a1); // Context and name. | |
| 1527 Runtime::FunctionId function_id = | |
| 1528 typeof_mode == NOT_INSIDE_TYPEOF | |
| 1529 ? Runtime::kLoadLookupSlot | |
| 1530 : Runtime::kLoadLookupSlotNoReferenceError; | |
| 1531 __ CallRuntime(function_id, 2); | |
| 1532 __ bind(&done); | |
| 1533 context()->Plug(v0); | |
| 1534 } | |
| 1535 } | |
| 1536 } | |
| 1537 | |
| 1538 | |
| 1539 void FullCodeGenerator::VisitRegExpLiteral(RegExpLiteral* expr) { | |
| 1540 Comment cmnt(masm_, "[ RegExpLiteral"); | |
| 1541 Label materialized; | |
| 1542 // Registers will be used as follows: | |
| 1543 // a5 = materialized value (RegExp literal) | |
| 1544 // a4 = JS function, literals array | |
| 1545 // a3 = literal index | |
| 1546 // a2 = RegExp pattern | |
| 1547 // a1 = RegExp flags | |
| 1548 // a0 = RegExp literal clone | |
| 1549 __ ld(a0, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); | |
| 1550 __ ld(a4, FieldMemOperand(a0, JSFunction::kLiteralsOffset)); | |
| 1551 int literal_offset = | |
| 1552 FixedArray::kHeaderSize + expr->literal_index() * kPointerSize; | |
| 1553 __ ld(a5, FieldMemOperand(a4, literal_offset)); | |
| 1554 __ LoadRoot(at, Heap::kUndefinedValueRootIndex); | |
| 1555 __ Branch(&materialized, ne, a5, Operand(at)); | |
| 1556 | |
| 1557 // Create regexp literal using runtime function. | |
| 1558 // Result will be in v0. | |
| 1559 __ li(a3, Operand(Smi::FromInt(expr->literal_index()))); | |
| 1560 __ li(a2, Operand(expr->pattern())); | |
| 1561 __ li(a1, Operand(expr->flags())); | |
| 1562 __ Push(a4, a3, a2, a1); | |
| 1563 __ CallRuntime(Runtime::kMaterializeRegExpLiteral, 4); | |
| 1564 __ mov(a5, v0); | |
| 1565 | |
| 1566 __ bind(&materialized); | |
| 1567 int size = JSRegExp::kSize + JSRegExp::kInObjectFieldCount * kPointerSize; | |
| 1568 Label allocated, runtime_allocate; | |
| 1569 __ Allocate(size, v0, a2, a3, &runtime_allocate, TAG_OBJECT); | |
| 1570 __ jmp(&allocated); | |
| 1571 | |
| 1572 __ bind(&runtime_allocate); | |
| 1573 __ li(a0, Operand(Smi::FromInt(size))); | |
| 1574 __ Push(a5, a0); | |
| 1575 __ CallRuntime(Runtime::kAllocateInNewSpace, 1); | |
| 1576 __ pop(a5); | |
| 1577 | |
| 1578 __ bind(&allocated); | |
| 1579 | |
| 1580 // After this, registers are used as follows: | |
| 1581 // v0: Newly allocated regexp. | |
| 1582 // a5: Materialized regexp. | |
| 1583 // a2: temp. | |
| 1584 __ CopyFields(v0, a5, a2.bit(), size / kPointerSize); | |
| 1585 context()->Plug(v0); | |
| 1586 } | |
| 1587 | |
| 1588 | |
| 1589 void FullCodeGenerator::EmitAccessor(Expression* expression) { | |
| 1590 if (expression == NULL) { | |
| 1591 __ LoadRoot(a1, Heap::kNullValueRootIndex); | |
| 1592 __ push(a1); | |
| 1593 } else { | |
| 1594 VisitForStackValue(expression); | |
| 1595 } | |
| 1596 } | |
| 1597 | |
| 1598 | |
| 1599 void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) { | |
| 1600 Comment cmnt(masm_, "[ ObjectLiteral"); | |
| 1601 | |
| 1602 Handle<FixedArray> constant_properties = expr->constant_properties(); | |
| 1603 __ ld(a3, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); | |
| 1604 __ ld(a3, FieldMemOperand(a3, JSFunction::kLiteralsOffset)); | |
| 1605 __ li(a2, Operand(Smi::FromInt(expr->literal_index()))); | |
| 1606 __ li(a1, Operand(constant_properties)); | |
| 1607 __ li(a0, Operand(Smi::FromInt(expr->ComputeFlags()))); | |
| 1608 if (MustCreateObjectLiteralWithRuntime(expr)) { | |
| 1609 __ Push(a3, a2, a1, a0); | |
| 1610 __ CallRuntime(Runtime::kCreateObjectLiteral, 4); | |
| 1611 } else { | |
| 1612 FastCloneShallowObjectStub stub(isolate(), expr->properties_count()); | |
| 1613 __ CallStub(&stub); | |
| 1614 } | |
| 1615 PrepareForBailoutForId(expr->CreateLiteralId(), TOS_REG); | |
| 1616 | |
| 1617 // If result_saved is true the result is on top of the stack. If | |
| 1618 // result_saved is false the result is in v0. | |
| 1619 bool result_saved = false; | |
| 1620 | |
| 1621 AccessorTable accessor_table(zone()); | |
| 1622 int property_index = 0; | |
| 1623 // store_slot_index points to the vector IC slot for the next store IC used. | |
| 1624 // ObjectLiteral::ComputeFeedbackRequirements controls the allocation of slots | |
| 1625 // and must be updated if the number of store ICs emitted here changes. | |
| 1626 int store_slot_index = 0; | |
| 1627 for (; property_index < expr->properties()->length(); property_index++) { | |
| 1628 ObjectLiteral::Property* property = expr->properties()->at(property_index); | |
| 1629 if (property->is_computed_name()) break; | |
| 1630 if (property->IsCompileTimeValue()) continue; | |
| 1631 | |
| 1632 Literal* key = property->key()->AsLiteral(); | |
| 1633 Expression* value = property->value(); | |
| 1634 if (!result_saved) { | |
| 1635 __ push(v0); // Save result on stack. | |
| 1636 result_saved = true; | |
| 1637 } | |
| 1638 switch (property->kind()) { | |
| 1639 case ObjectLiteral::Property::CONSTANT: | |
| 1640 UNREACHABLE(); | |
| 1641 case ObjectLiteral::Property::MATERIALIZED_LITERAL: | |
| 1642 DCHECK(!CompileTimeValue::IsCompileTimeValue(property->value())); | |
| 1643 // Fall through. | |
| 1644 case ObjectLiteral::Property::COMPUTED: | |
| 1645 // It is safe to use [[Put]] here because the boilerplate already | |
| 1646 // contains computed properties with an uninitialized value. | |
| 1647 if (key->value()->IsInternalizedString()) { | |
| 1648 if (property->emit_store()) { | |
| 1649 VisitForAccumulatorValue(value); | |
| 1650 __ mov(StoreDescriptor::ValueRegister(), result_register()); | |
| 1651 DCHECK(StoreDescriptor::ValueRegister().is(a0)); | |
| 1652 __ li(StoreDescriptor::NameRegister(), Operand(key->value())); | |
| 1653 __ ld(StoreDescriptor::ReceiverRegister(), MemOperand(sp)); | |
| 1654 if (FLAG_vector_stores) { | |
| 1655 EmitLoadStoreICSlot(expr->GetNthSlot(store_slot_index++)); | |
| 1656 CallStoreIC(); | |
| 1657 } else { | |
| 1658 CallStoreIC(key->LiteralFeedbackId()); | |
| 1659 } | |
| 1660 PrepareForBailoutForId(key->id(), NO_REGISTERS); | |
| 1661 | |
| 1662 if (NeedsHomeObject(value)) { | |
| 1663 __ Move(StoreDescriptor::ReceiverRegister(), v0); | |
| 1664 __ li(StoreDescriptor::NameRegister(), | |
| 1665 Operand(isolate()->factory()->home_object_symbol())); | |
| 1666 __ ld(StoreDescriptor::ValueRegister(), MemOperand(sp)); | |
| 1667 if (FLAG_vector_stores) { | |
| 1668 EmitLoadStoreICSlot(expr->GetNthSlot(store_slot_index++)); | |
| 1669 } | |
| 1670 CallStoreIC(); | |
| 1671 } | |
| 1672 } else { | |
| 1673 VisitForEffect(value); | |
| 1674 } | |
| 1675 break; | |
| 1676 } | |
| 1677 // Duplicate receiver on stack. | |
| 1678 __ ld(a0, MemOperand(sp)); | |
| 1679 __ push(a0); | |
| 1680 VisitForStackValue(key); | |
| 1681 VisitForStackValue(value); | |
| 1682 if (property->emit_store()) { | |
| 1683 EmitSetHomeObjectIfNeeded( | |
| 1684 value, 2, expr->SlotForHomeObject(value, &store_slot_index)); | |
| 1685 __ li(a0, Operand(Smi::FromInt(SLOPPY))); // PropertyAttributes. | |
| 1686 __ push(a0); | |
| 1687 __ CallRuntime(Runtime::kSetProperty, 4); | |
| 1688 } else { | |
| 1689 __ Drop(3); | |
| 1690 } | |
| 1691 break; | |
| 1692 case ObjectLiteral::Property::PROTOTYPE: | |
| 1693 // Duplicate receiver on stack. | |
| 1694 __ ld(a0, MemOperand(sp)); | |
| 1695 __ push(a0); | |
| 1696 VisitForStackValue(value); | |
| 1697 DCHECK(property->emit_store()); | |
| 1698 __ CallRuntime(Runtime::kInternalSetPrototype, 2); | |
| 1699 break; | |
| 1700 case ObjectLiteral::Property::GETTER: | |
| 1701 if (property->emit_store()) { | |
| 1702 accessor_table.lookup(key)->second->getter = value; | |
| 1703 } | |
| 1704 break; | |
| 1705 case ObjectLiteral::Property::SETTER: | |
| 1706 if (property->emit_store()) { | |
| 1707 accessor_table.lookup(key)->second->setter = value; | |
| 1708 } | |
| 1709 break; | |
| 1710 } | |
| 1711 } | |
| 1712 | |
| 1713 // Emit code to define accessors, using only a single call to the runtime for | |
| 1714 // each pair of corresponding getters and setters. | |
| 1715 for (AccessorTable::Iterator it = accessor_table.begin(); | |
| 1716 it != accessor_table.end(); | |
| 1717 ++it) { | |
| 1718 __ ld(a0, MemOperand(sp)); // Duplicate receiver. | |
| 1719 __ push(a0); | |
| 1720 VisitForStackValue(it->first); | |
| 1721 EmitAccessor(it->second->getter); | |
| 1722 EmitSetHomeObjectIfNeeded( | |
| 1723 it->second->getter, 2, | |
| 1724 expr->SlotForHomeObject(it->second->getter, &store_slot_index)); | |
| 1725 EmitAccessor(it->second->setter); | |
| 1726 EmitSetHomeObjectIfNeeded( | |
| 1727 it->second->setter, 3, | |
| 1728 expr->SlotForHomeObject(it->second->setter, &store_slot_index)); | |
| 1729 __ li(a0, Operand(Smi::FromInt(NONE))); | |
| 1730 __ push(a0); | |
| 1731 __ CallRuntime(Runtime::kDefineAccessorPropertyUnchecked, 5); | |
| 1732 } | |
| 1733 | |
| 1734 // Object literals have two parts. The "static" part on the left contains no | |
| 1735 // computed property names, and so we can compute its map ahead of time; see | |
| 1736 // runtime.cc::CreateObjectLiteralBoilerplate. The second "dynamic" part | |
| 1737 // starts with the first computed property name, and continues with all | |
| 1738 // properties to its right. All the code from above initializes the static | |
| 1739 // component of the object literal, and arranges for the map of the result to | |
| 1740 // reflect the static order in which the keys appear. For the dynamic | |
| 1741 // properties, we compile them into a series of "SetOwnProperty" runtime | |
| 1742 // calls. This will preserve insertion order. | |
| 1743 for (; property_index < expr->properties()->length(); property_index++) { | |
| 1744 ObjectLiteral::Property* property = expr->properties()->at(property_index); | |
| 1745 | |
| 1746 Expression* value = property->value(); | |
| 1747 if (!result_saved) { | |
| 1748 __ push(v0); // Save result on the stack | |
| 1749 result_saved = true; | |
| 1750 } | |
| 1751 | |
| 1752 __ ld(a0, MemOperand(sp)); // Duplicate receiver. | |
| 1753 __ push(a0); | |
| 1754 | |
| 1755 if (property->kind() == ObjectLiteral::Property::PROTOTYPE) { | |
| 1756 DCHECK(!property->is_computed_name()); | |
| 1757 VisitForStackValue(value); | |
| 1758 DCHECK(property->emit_store()); | |
| 1759 __ CallRuntime(Runtime::kInternalSetPrototype, 2); | |
| 1760 } else { | |
| 1761 EmitPropertyKey(property, expr->GetIdForProperty(property_index)); | |
| 1762 VisitForStackValue(value); | |
| 1763 EmitSetHomeObjectIfNeeded( | |
| 1764 value, 2, expr->SlotForHomeObject(value, &store_slot_index)); | |
| 1765 | |
| 1766 switch (property->kind()) { | |
| 1767 case ObjectLiteral::Property::CONSTANT: | |
| 1768 case ObjectLiteral::Property::MATERIALIZED_LITERAL: | |
| 1769 case ObjectLiteral::Property::COMPUTED: | |
| 1770 if (property->emit_store()) { | |
| 1771 __ li(a0, Operand(Smi::FromInt(NONE))); | |
| 1772 __ push(a0); | |
| 1773 __ CallRuntime(Runtime::kDefineDataPropertyUnchecked, 4); | |
| 1774 } else { | |
| 1775 __ Drop(3); | |
| 1776 } | |
| 1777 break; | |
| 1778 | |
| 1779 case ObjectLiteral::Property::PROTOTYPE: | |
| 1780 UNREACHABLE(); | |
| 1781 break; | |
| 1782 | |
| 1783 case ObjectLiteral::Property::GETTER: | |
| 1784 __ li(a0, Operand(Smi::FromInt(NONE))); | |
| 1785 __ push(a0); | |
| 1786 __ CallRuntime(Runtime::kDefineGetterPropertyUnchecked, 4); | |
| 1787 break; | |
| 1788 | |
| 1789 case ObjectLiteral::Property::SETTER: | |
| 1790 __ li(a0, Operand(Smi::FromInt(NONE))); | |
| 1791 __ push(a0); | |
| 1792 __ CallRuntime(Runtime::kDefineSetterPropertyUnchecked, 4); | |
| 1793 break; | |
| 1794 } | |
| 1795 } | |
| 1796 } | |
| 1797 | |
| 1798 if (expr->has_function()) { | |
| 1799 DCHECK(result_saved); | |
| 1800 __ ld(a0, MemOperand(sp)); | |
| 1801 __ push(a0); | |
| 1802 __ CallRuntime(Runtime::kToFastProperties, 1); | |
| 1803 } | |
| 1804 | |
| 1805 if (result_saved) { | |
| 1806 context()->PlugTOS(); | |
| 1807 } else { | |
| 1808 context()->Plug(v0); | |
| 1809 } | |
| 1810 | |
| 1811 // Verify that compilation exactly consumed the number of store ic slots that | |
| 1812 // the ObjectLiteral node had to offer. | |
| 1813 DCHECK(!FLAG_vector_stores || store_slot_index == expr->slot_count()); | |
| 1814 } | |
| 1815 | |
| 1816 | |
| 1817 void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) { | |
| 1818 Comment cmnt(masm_, "[ ArrayLiteral"); | |
| 1819 | |
| 1820 expr->BuildConstantElements(isolate()); | |
| 1821 | |
| 1822 Handle<FixedArray> constant_elements = expr->constant_elements(); | |
| 1823 bool has_fast_elements = | |
| 1824 IsFastObjectElementsKind(expr->constant_elements_kind()); | |
| 1825 | |
| 1826 AllocationSiteMode allocation_site_mode = TRACK_ALLOCATION_SITE; | |
| 1827 if (has_fast_elements && !FLAG_allocation_site_pretenuring) { | |
| 1828 // If the only customer of allocation sites is transitioning, then | |
| 1829 // we can turn it off if we don't have anywhere else to transition to. | |
| 1830 allocation_site_mode = DONT_TRACK_ALLOCATION_SITE; | |
| 1831 } | |
| 1832 | |
| 1833 __ mov(a0, result_register()); | |
| 1834 __ ld(a3, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); | |
| 1835 __ ld(a3, FieldMemOperand(a3, JSFunction::kLiteralsOffset)); | |
| 1836 __ li(a2, Operand(Smi::FromInt(expr->literal_index()))); | |
| 1837 __ li(a1, Operand(constant_elements)); | |
| 1838 if (MustCreateArrayLiteralWithRuntime(expr)) { | |
| 1839 __ li(a0, Operand(Smi::FromInt(expr->ComputeFlags()))); | |
| 1840 __ Push(a3, a2, a1, a0); | |
| 1841 __ CallRuntime(Runtime::kCreateArrayLiteral, 4); | |
| 1842 } else { | |
| 1843 FastCloneShallowArrayStub stub(isolate(), allocation_site_mode); | |
| 1844 __ CallStub(&stub); | |
| 1845 } | |
| 1846 PrepareForBailoutForId(expr->CreateLiteralId(), TOS_REG); | |
| 1847 | |
| 1848 bool result_saved = false; // Is the result saved to the stack? | |
| 1849 ZoneList<Expression*>* subexprs = expr->values(); | |
| 1850 int length = subexprs->length(); | |
| 1851 | |
| 1852 // Emit code to evaluate all the non-constant subexpressions and to store | |
| 1853 // them into the newly cloned array. | |
| 1854 int array_index = 0; | |
| 1855 for (; array_index < length; array_index++) { | |
| 1856 Expression* subexpr = subexprs->at(array_index); | |
| 1857 if (subexpr->IsSpread()) break; | |
| 1858 | |
| 1859 // If the subexpression is a literal or a simple materialized literal it | |
| 1860 // is already set in the cloned array. | |
| 1861 if (CompileTimeValue::IsCompileTimeValue(subexpr)) continue; | |
| 1862 | |
| 1863 if (!result_saved) { | |
| 1864 __ push(v0); // array literal | |
| 1865 __ Push(Smi::FromInt(expr->literal_index())); | |
| 1866 result_saved = true; | |
| 1867 } | |
| 1868 | |
| 1869 VisitForAccumulatorValue(subexpr); | |
| 1870 | |
| 1871 if (has_fast_elements) { | |
| 1872 int offset = FixedArray::kHeaderSize + (array_index * kPointerSize); | |
| 1873 __ ld(a6, MemOperand(sp, kPointerSize)); // Copy of array literal. | |
| 1874 __ ld(a1, FieldMemOperand(a6, JSObject::kElementsOffset)); | |
| 1875 __ sd(result_register(), FieldMemOperand(a1, offset)); | |
| 1876 // Update the write barrier for the array store. | |
| 1877 __ RecordWriteField(a1, offset, result_register(), a2, | |
| 1878 kRAHasBeenSaved, kDontSaveFPRegs, | |
| 1879 EMIT_REMEMBERED_SET, INLINE_SMI_CHECK); | |
| 1880 } else { | |
| 1881 __ li(a3, Operand(Smi::FromInt(array_index))); | |
| 1882 __ mov(a0, result_register()); | |
| 1883 StoreArrayLiteralElementStub stub(isolate()); | |
| 1884 __ CallStub(&stub); | |
| 1885 } | |
| 1886 | |
| 1887 PrepareForBailoutForId(expr->GetIdForElement(array_index), NO_REGISTERS); | |
| 1888 } | |
| 1889 | |
| 1890 // In case the array literal contains spread expressions it has two parts. The | |
| 1891 // first part is the "static" array which has a literal index is handled | |
| 1892 // above. The second part is the part after the first spread expression | |
| 1893 // (inclusive) and these elements gets appended to the array. Note that the | |
| 1894 // number elements an iterable produces is unknown ahead of time. | |
| 1895 if (array_index < length && result_saved) { | |
| 1896 __ Pop(); // literal index | |
| 1897 __ Pop(v0); | |
| 1898 result_saved = false; | |
| 1899 } | |
| 1900 for (; array_index < length; array_index++) { | |
| 1901 Expression* subexpr = subexprs->at(array_index); | |
| 1902 | |
| 1903 __ Push(v0); | |
| 1904 if (subexpr->IsSpread()) { | |
| 1905 VisitForStackValue(subexpr->AsSpread()->expression()); | |
| 1906 __ InvokeBuiltin(Builtins::CONCAT_ITERABLE_TO_ARRAY, CALL_FUNCTION); | |
| 1907 } else { | |
| 1908 VisitForStackValue(subexpr); | |
| 1909 __ CallRuntime(Runtime::kAppendElement, 2); | |
| 1910 } | |
| 1911 | |
| 1912 PrepareForBailoutForId(expr->GetIdForElement(array_index), NO_REGISTERS); | |
| 1913 } | |
| 1914 | |
| 1915 if (result_saved) { | |
| 1916 __ Pop(); // literal index | |
| 1917 context()->PlugTOS(); | |
| 1918 } else { | |
| 1919 context()->Plug(v0); | |
| 1920 } | |
| 1921 } | |
| 1922 | |
| 1923 | |
| 1924 void FullCodeGenerator::VisitAssignment(Assignment* expr) { | |
| 1925 DCHECK(expr->target()->IsValidReferenceExpressionOrThis()); | |
| 1926 | |
| 1927 Comment cmnt(masm_, "[ Assignment"); | |
| 1928 SetExpressionPosition(expr, INSERT_BREAK); | |
| 1929 | |
| 1930 Property* property = expr->target()->AsProperty(); | |
| 1931 LhsKind assign_type = Property::GetAssignType(property); | |
| 1932 | |
| 1933 // Evaluate LHS expression. | |
| 1934 switch (assign_type) { | |
| 1935 case VARIABLE: | |
| 1936 // Nothing to do here. | |
| 1937 break; | |
| 1938 case NAMED_PROPERTY: | |
| 1939 if (expr->is_compound()) { | |
| 1940 // We need the receiver both on the stack and in the register. | |
| 1941 VisitForStackValue(property->obj()); | |
| 1942 __ ld(LoadDescriptor::ReceiverRegister(), MemOperand(sp, 0)); | |
| 1943 } else { | |
| 1944 VisitForStackValue(property->obj()); | |
| 1945 } | |
| 1946 break; | |
| 1947 case NAMED_SUPER_PROPERTY: | |
| 1948 VisitForStackValue( | |
| 1949 property->obj()->AsSuperPropertyReference()->this_var()); | |
| 1950 VisitForAccumulatorValue( | |
| 1951 property->obj()->AsSuperPropertyReference()->home_object()); | |
| 1952 __ Push(result_register()); | |
| 1953 if (expr->is_compound()) { | |
| 1954 const Register scratch = a1; | |
| 1955 __ ld(scratch, MemOperand(sp, kPointerSize)); | |
| 1956 __ Push(scratch, result_register()); | |
| 1957 } | |
| 1958 break; | |
| 1959 case KEYED_SUPER_PROPERTY: { | |
| 1960 const Register scratch = a1; | |
| 1961 VisitForStackValue( | |
| 1962 property->obj()->AsSuperPropertyReference()->this_var()); | |
| 1963 VisitForAccumulatorValue( | |
| 1964 property->obj()->AsSuperPropertyReference()->home_object()); | |
| 1965 __ Move(scratch, result_register()); | |
| 1966 VisitForAccumulatorValue(property->key()); | |
| 1967 __ Push(scratch, result_register()); | |
| 1968 if (expr->is_compound()) { | |
| 1969 const Register scratch1 = a4; | |
| 1970 __ ld(scratch1, MemOperand(sp, 2 * kPointerSize)); | |
| 1971 __ Push(scratch1, scratch, result_register()); | |
| 1972 } | |
| 1973 break; | |
| 1974 } | |
| 1975 case KEYED_PROPERTY: | |
| 1976 // We need the key and receiver on both the stack and in v0 and a1. | |
| 1977 if (expr->is_compound()) { | |
| 1978 VisitForStackValue(property->obj()); | |
| 1979 VisitForStackValue(property->key()); | |
| 1980 __ ld(LoadDescriptor::ReceiverRegister(), | |
| 1981 MemOperand(sp, 1 * kPointerSize)); | |
| 1982 __ ld(LoadDescriptor::NameRegister(), MemOperand(sp, 0)); | |
| 1983 } else { | |
| 1984 VisitForStackValue(property->obj()); | |
| 1985 VisitForStackValue(property->key()); | |
| 1986 } | |
| 1987 break; | |
| 1988 } | |
| 1989 | |
| 1990 // For compound assignments we need another deoptimization point after the | |
| 1991 // variable/property load. | |
| 1992 if (expr->is_compound()) { | |
| 1993 { AccumulatorValueContext context(this); | |
| 1994 switch (assign_type) { | |
| 1995 case VARIABLE: | |
| 1996 EmitVariableLoad(expr->target()->AsVariableProxy()); | |
| 1997 PrepareForBailout(expr->target(), TOS_REG); | |
| 1998 break; | |
| 1999 case NAMED_PROPERTY: | |
| 2000 EmitNamedPropertyLoad(property); | |
| 2001 PrepareForBailoutForId(property->LoadId(), TOS_REG); | |
| 2002 break; | |
| 2003 case NAMED_SUPER_PROPERTY: | |
| 2004 EmitNamedSuperPropertyLoad(property); | |
| 2005 PrepareForBailoutForId(property->LoadId(), TOS_REG); | |
| 2006 break; | |
| 2007 case KEYED_SUPER_PROPERTY: | |
| 2008 EmitKeyedSuperPropertyLoad(property); | |
| 2009 PrepareForBailoutForId(property->LoadId(), TOS_REG); | |
| 2010 break; | |
| 2011 case KEYED_PROPERTY: | |
| 2012 EmitKeyedPropertyLoad(property); | |
| 2013 PrepareForBailoutForId(property->LoadId(), TOS_REG); | |
| 2014 break; | |
| 2015 } | |
| 2016 } | |
| 2017 | |
| 2018 Token::Value op = expr->binary_op(); | |
| 2019 __ push(v0); // Left operand goes on the stack. | |
| 2020 VisitForAccumulatorValue(expr->value()); | |
| 2021 | |
| 2022 AccumulatorValueContext context(this); | |
| 2023 if (ShouldInlineSmiCase(op)) { | |
| 2024 EmitInlineSmiBinaryOp(expr->binary_operation(), | |
| 2025 op, | |
| 2026 expr->target(), | |
| 2027 expr->value()); | |
| 2028 } else { | |
| 2029 EmitBinaryOp(expr->binary_operation(), op); | |
| 2030 } | |
| 2031 | |
| 2032 // Deoptimization point in case the binary operation may have side effects. | |
| 2033 PrepareForBailout(expr->binary_operation(), TOS_REG); | |
| 2034 } else { | |
| 2035 VisitForAccumulatorValue(expr->value()); | |
| 2036 } | |
| 2037 | |
| 2038 SetExpressionPosition(expr); | |
| 2039 | |
| 2040 // Store the value. | |
| 2041 switch (assign_type) { | |
| 2042 case VARIABLE: | |
| 2043 EmitVariableAssignment(expr->target()->AsVariableProxy()->var(), | |
| 2044 expr->op(), expr->AssignmentSlot()); | |
| 2045 PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); | |
| 2046 context()->Plug(v0); | |
| 2047 break; | |
| 2048 case NAMED_PROPERTY: | |
| 2049 EmitNamedPropertyAssignment(expr); | |
| 2050 break; | |
| 2051 case NAMED_SUPER_PROPERTY: | |
| 2052 EmitNamedSuperPropertyStore(property); | |
| 2053 context()->Plug(v0); | |
| 2054 break; | |
| 2055 case KEYED_SUPER_PROPERTY: | |
| 2056 EmitKeyedSuperPropertyStore(property); | |
| 2057 context()->Plug(v0); | |
| 2058 break; | |
| 2059 case KEYED_PROPERTY: | |
| 2060 EmitKeyedPropertyAssignment(expr); | |
| 2061 break; | |
| 2062 } | |
| 2063 } | |
| 2064 | |
| 2065 | |
| 2066 void FullCodeGenerator::VisitYield(Yield* expr) { | |
| 2067 Comment cmnt(masm_, "[ Yield"); | |
| 2068 SetExpressionPosition(expr); | |
| 2069 | |
| 2070 // Evaluate yielded value first; the initial iterator definition depends on | |
| 2071 // this. It stays on the stack while we update the iterator. | |
| 2072 VisitForStackValue(expr->expression()); | |
| 2073 | |
| 2074 switch (expr->yield_kind()) { | |
| 2075 case Yield::kSuspend: | |
| 2076 // Pop value from top-of-stack slot; box result into result register. | |
| 2077 EmitCreateIteratorResult(false); | |
| 2078 __ push(result_register()); | |
| 2079 // Fall through. | |
| 2080 case Yield::kInitial: { | |
| 2081 Label suspend, continuation, post_runtime, resume; | |
| 2082 | |
| 2083 __ jmp(&suspend); | |
| 2084 __ bind(&continuation); | |
| 2085 __ RecordGeneratorContinuation(); | |
| 2086 __ jmp(&resume); | |
| 2087 | |
| 2088 __ bind(&suspend); | |
| 2089 VisitForAccumulatorValue(expr->generator_object()); | |
| 2090 DCHECK(continuation.pos() > 0 && Smi::IsValid(continuation.pos())); | |
| 2091 __ li(a1, Operand(Smi::FromInt(continuation.pos()))); | |
| 2092 __ sd(a1, FieldMemOperand(v0, JSGeneratorObject::kContinuationOffset)); | |
| 2093 __ sd(cp, FieldMemOperand(v0, JSGeneratorObject::kContextOffset)); | |
| 2094 __ mov(a1, cp); | |
| 2095 __ RecordWriteField(v0, JSGeneratorObject::kContextOffset, a1, a2, | |
| 2096 kRAHasBeenSaved, kDontSaveFPRegs); | |
| 2097 __ Daddu(a1, fp, Operand(StandardFrameConstants::kExpressionsOffset)); | |
| 2098 __ Branch(&post_runtime, eq, sp, Operand(a1)); | |
| 2099 __ push(v0); // generator object | |
| 2100 __ CallRuntime(Runtime::kSuspendJSGeneratorObject, 1); | |
| 2101 __ ld(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); | |
| 2102 __ bind(&post_runtime); | |
| 2103 __ pop(result_register()); | |
| 2104 EmitReturnSequence(); | |
| 2105 | |
| 2106 __ bind(&resume); | |
| 2107 context()->Plug(result_register()); | |
| 2108 break; | |
| 2109 } | |
| 2110 | |
| 2111 case Yield::kFinal: { | |
| 2112 VisitForAccumulatorValue(expr->generator_object()); | |
| 2113 __ li(a1, Operand(Smi::FromInt(JSGeneratorObject::kGeneratorClosed))); | |
| 2114 __ sd(a1, FieldMemOperand(result_register(), | |
| 2115 JSGeneratorObject::kContinuationOffset)); | |
| 2116 // Pop value from top-of-stack slot, box result into result register. | |
| 2117 EmitCreateIteratorResult(true); | |
| 2118 EmitUnwindBeforeReturn(); | |
| 2119 EmitReturnSequence(); | |
| 2120 break; | |
| 2121 } | |
| 2122 | |
| 2123 case Yield::kDelegating: { | |
| 2124 VisitForStackValue(expr->generator_object()); | |
| 2125 | |
| 2126 // Initial stack layout is as follows: | |
| 2127 // [sp + 1 * kPointerSize] iter | |
| 2128 // [sp + 0 * kPointerSize] g | |
| 2129 | |
| 2130 Label l_catch, l_try, l_suspend, l_continuation, l_resume; | |
| 2131 Label l_next, l_call; | |
| 2132 Register load_receiver = LoadDescriptor::ReceiverRegister(); | |
| 2133 Register load_name = LoadDescriptor::NameRegister(); | |
| 2134 // Initial send value is undefined. | |
| 2135 __ LoadRoot(a0, Heap::kUndefinedValueRootIndex); | |
| 2136 __ Branch(&l_next); | |
| 2137 | |
| 2138 // catch (e) { receiver = iter; f = 'throw'; arg = e; goto l_call; } | |
| 2139 __ bind(&l_catch); | |
| 2140 __ mov(a0, v0); | |
| 2141 __ LoadRoot(a2, Heap::kthrow_stringRootIndex); // "throw" | |
| 2142 __ ld(a3, MemOperand(sp, 1 * kPointerSize)); // iter | |
| 2143 __ Push(a2, a3, a0); // "throw", iter, except | |
| 2144 __ jmp(&l_call); | |
| 2145 | |
| 2146 // try { received = %yield result } | |
| 2147 // Shuffle the received result above a try handler and yield it without | |
| 2148 // re-boxing. | |
| 2149 __ bind(&l_try); | |
| 2150 __ pop(a0); // result | |
| 2151 int handler_index = NewHandlerTableEntry(); | |
| 2152 EnterTryBlock(handler_index, &l_catch); | |
| 2153 const int try_block_size = TryCatch::kElementCount * kPointerSize; | |
| 2154 __ push(a0); // result | |
| 2155 | |
| 2156 __ jmp(&l_suspend); | |
| 2157 __ bind(&l_continuation); | |
| 2158 __ RecordGeneratorContinuation(); | |
| 2159 __ mov(a0, v0); | |
| 2160 __ jmp(&l_resume); | |
| 2161 | |
| 2162 __ bind(&l_suspend); | |
| 2163 const int generator_object_depth = kPointerSize + try_block_size; | |
| 2164 __ ld(a0, MemOperand(sp, generator_object_depth)); | |
| 2165 __ push(a0); // g | |
| 2166 __ Push(Smi::FromInt(handler_index)); // handler-index | |
| 2167 DCHECK(l_continuation.pos() > 0 && Smi::IsValid(l_continuation.pos())); | |
| 2168 __ li(a1, Operand(Smi::FromInt(l_continuation.pos()))); | |
| 2169 __ sd(a1, FieldMemOperand(a0, JSGeneratorObject::kContinuationOffset)); | |
| 2170 __ sd(cp, FieldMemOperand(a0, JSGeneratorObject::kContextOffset)); | |
| 2171 __ mov(a1, cp); | |
| 2172 __ RecordWriteField(a0, JSGeneratorObject::kContextOffset, a1, a2, | |
| 2173 kRAHasBeenSaved, kDontSaveFPRegs); | |
| 2174 __ CallRuntime(Runtime::kSuspendJSGeneratorObject, 2); | |
| 2175 __ ld(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); | |
| 2176 __ pop(v0); // result | |
| 2177 EmitReturnSequence(); | |
| 2178 __ mov(a0, v0); | |
| 2179 __ bind(&l_resume); // received in a0 | |
| 2180 ExitTryBlock(handler_index); | |
| 2181 | |
| 2182 // receiver = iter; f = 'next'; arg = received; | |
| 2183 __ bind(&l_next); | |
| 2184 __ LoadRoot(load_name, Heap::knext_stringRootIndex); // "next" | |
| 2185 __ ld(a3, MemOperand(sp, 1 * kPointerSize)); // iter | |
| 2186 __ Push(load_name, a3, a0); // "next", iter, received | |
| 2187 | |
| 2188 // result = receiver[f](arg); | |
| 2189 __ bind(&l_call); | |
| 2190 __ ld(load_receiver, MemOperand(sp, kPointerSize)); | |
| 2191 __ ld(load_name, MemOperand(sp, 2 * kPointerSize)); | |
| 2192 __ li(LoadDescriptor::SlotRegister(), | |
| 2193 Operand(SmiFromSlot(expr->KeyedLoadFeedbackSlot()))); | |
| 2194 Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate(), SLOPPY).code(); | |
| 2195 CallIC(ic, TypeFeedbackId::None()); | |
| 2196 __ mov(a0, v0); | |
| 2197 __ mov(a1, a0); | |
| 2198 __ sd(a1, MemOperand(sp, 2 * kPointerSize)); | |
| 2199 SetCallPosition(expr, 1); | |
| 2200 CallFunctionStub stub(isolate(), 1, CALL_AS_METHOD); | |
| 2201 __ CallStub(&stub); | |
| 2202 | |
| 2203 __ ld(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); | |
| 2204 __ Drop(1); // The function is still on the stack; drop it. | |
| 2205 | |
| 2206 // if (!result.done) goto l_try; | |
| 2207 __ Move(load_receiver, v0); | |
| 2208 | |
| 2209 __ push(load_receiver); // save result | |
| 2210 __ LoadRoot(load_name, Heap::kdone_stringRootIndex); // "done" | |
| 2211 __ li(LoadDescriptor::SlotRegister(), | |
| 2212 Operand(SmiFromSlot(expr->DoneFeedbackSlot()))); | |
| 2213 CallLoadIC(NOT_INSIDE_TYPEOF); // v0=result.done | |
| 2214 __ mov(a0, v0); | |
| 2215 Handle<Code> bool_ic = ToBooleanStub::GetUninitialized(isolate()); | |
| 2216 CallIC(bool_ic); | |
| 2217 __ Branch(&l_try, eq, v0, Operand(zero_reg)); | |
| 2218 | |
| 2219 // result.value | |
| 2220 __ pop(load_receiver); // result | |
| 2221 __ LoadRoot(load_name, Heap::kvalue_stringRootIndex); // "value" | |
| 2222 __ li(LoadDescriptor::SlotRegister(), | |
| 2223 Operand(SmiFromSlot(expr->ValueFeedbackSlot()))); | |
| 2224 CallLoadIC(NOT_INSIDE_TYPEOF); // v0=result.value | |
| 2225 context()->DropAndPlug(2, v0); // drop iter and g | |
| 2226 break; | |
| 2227 } | |
| 2228 } | |
| 2229 } | |
| 2230 | |
| 2231 | |
| 2232 void FullCodeGenerator::EmitGeneratorResume(Expression *generator, | |
| 2233 Expression *value, | |
| 2234 JSGeneratorObject::ResumeMode resume_mode) { | |
| 2235 // The value stays in a0, and is ultimately read by the resumed generator, as | |
| 2236 // if CallRuntime(Runtime::kSuspendJSGeneratorObject) returned it. Or it | |
| 2237 // is read to throw the value when the resumed generator is already closed. | |
| 2238 // a1 will hold the generator object until the activation has been resumed. | |
| 2239 VisitForStackValue(generator); | |
| 2240 VisitForAccumulatorValue(value); | |
| 2241 __ pop(a1); | |
| 2242 | |
| 2243 // Load suspended function and context. | |
| 2244 __ ld(cp, FieldMemOperand(a1, JSGeneratorObject::kContextOffset)); | |
| 2245 __ ld(a4, FieldMemOperand(a1, JSGeneratorObject::kFunctionOffset)); | |
| 2246 | |
| 2247 // Load receiver and store as the first argument. | |
| 2248 __ ld(a2, FieldMemOperand(a1, JSGeneratorObject::kReceiverOffset)); | |
| 2249 __ push(a2); | |
| 2250 | |
| 2251 // Push holes for the rest of the arguments to the generator function. | |
| 2252 __ ld(a3, FieldMemOperand(a4, JSFunction::kSharedFunctionInfoOffset)); | |
| 2253 // The argument count is stored as int32_t on 64-bit platforms. | |
| 2254 // TODO(plind): Smi on 32-bit platforms. | |
| 2255 __ lw(a3, | |
| 2256 FieldMemOperand(a3, SharedFunctionInfo::kFormalParameterCountOffset)); | |
| 2257 __ LoadRoot(a2, Heap::kTheHoleValueRootIndex); | |
| 2258 Label push_argument_holes, push_frame; | |
| 2259 __ bind(&push_argument_holes); | |
| 2260 __ Dsubu(a3, a3, Operand(1)); | |
| 2261 __ Branch(&push_frame, lt, a3, Operand(zero_reg)); | |
| 2262 __ push(a2); | |
| 2263 __ jmp(&push_argument_holes); | |
| 2264 | |
| 2265 // Enter a new JavaScript frame, and initialize its slots as they were when | |
| 2266 // the generator was suspended. | |
| 2267 Label resume_frame, done; | |
| 2268 __ bind(&push_frame); | |
| 2269 __ Call(&resume_frame); | |
| 2270 __ jmp(&done); | |
| 2271 __ bind(&resume_frame); | |
| 2272 // ra = return address. | |
| 2273 // fp = caller's frame pointer. | |
| 2274 // cp = callee's context, | |
| 2275 // a4 = callee's JS function. | |
| 2276 __ Push(ra, fp, cp, a4); | |
| 2277 // Adjust FP to point to saved FP. | |
| 2278 __ Daddu(fp, sp, 2 * kPointerSize); | |
| 2279 | |
| 2280 // Load the operand stack size. | |
| 2281 __ ld(a3, FieldMemOperand(a1, JSGeneratorObject::kOperandStackOffset)); | |
| 2282 __ ld(a3, FieldMemOperand(a3, FixedArray::kLengthOffset)); | |
| 2283 __ SmiUntag(a3); | |
| 2284 | |
| 2285 // If we are sending a value and there is no operand stack, we can jump back | |
| 2286 // in directly. | |
| 2287 if (resume_mode == JSGeneratorObject::NEXT) { | |
| 2288 Label slow_resume; | |
| 2289 __ Branch(&slow_resume, ne, a3, Operand(zero_reg)); | |
| 2290 __ ld(a3, FieldMemOperand(a4, JSFunction::kCodeEntryOffset)); | |
| 2291 __ ld(a2, FieldMemOperand(a1, JSGeneratorObject::kContinuationOffset)); | |
| 2292 __ SmiUntag(a2); | |
| 2293 __ Daddu(a3, a3, Operand(a2)); | |
| 2294 __ li(a2, Operand(Smi::FromInt(JSGeneratorObject::kGeneratorExecuting))); | |
| 2295 __ sd(a2, FieldMemOperand(a1, JSGeneratorObject::kContinuationOffset)); | |
| 2296 __ Jump(a3); | |
| 2297 __ bind(&slow_resume); | |
| 2298 } | |
| 2299 | |
| 2300 // Otherwise, we push holes for the operand stack and call the runtime to fix | |
| 2301 // up the stack and the handlers. | |
| 2302 Label push_operand_holes, call_resume; | |
| 2303 __ bind(&push_operand_holes); | |
| 2304 __ Dsubu(a3, a3, Operand(1)); | |
| 2305 __ Branch(&call_resume, lt, a3, Operand(zero_reg)); | |
| 2306 __ push(a2); | |
| 2307 __ Branch(&push_operand_holes); | |
| 2308 __ bind(&call_resume); | |
| 2309 DCHECK(!result_register().is(a1)); | |
| 2310 __ Push(a1, result_register()); | |
| 2311 __ Push(Smi::FromInt(resume_mode)); | |
| 2312 __ CallRuntime(Runtime::kResumeJSGeneratorObject, 3); | |
| 2313 // Not reached: the runtime call returns elsewhere. | |
| 2314 __ stop("not-reached"); | |
| 2315 | |
| 2316 __ bind(&done); | |
| 2317 context()->Plug(result_register()); | |
| 2318 } | |
| 2319 | |
| 2320 | |
| 2321 void FullCodeGenerator::EmitCreateIteratorResult(bool done) { | |
| 2322 Label gc_required; | |
| 2323 Label allocated; | |
| 2324 | |
| 2325 const int instance_size = 5 * kPointerSize; | |
| 2326 DCHECK_EQ(isolate()->native_context()->iterator_result_map()->instance_size(), | |
| 2327 instance_size); | |
| 2328 | |
| 2329 __ Allocate(instance_size, v0, a2, a3, &gc_required, TAG_OBJECT); | |
| 2330 __ jmp(&allocated); | |
| 2331 | |
| 2332 __ bind(&gc_required); | |
| 2333 __ Push(Smi::FromInt(instance_size)); | |
| 2334 __ CallRuntime(Runtime::kAllocateInNewSpace, 1); | |
| 2335 __ ld(context_register(), | |
| 2336 MemOperand(fp, StandardFrameConstants::kContextOffset)); | |
| 2337 | |
| 2338 __ bind(&allocated); | |
| 2339 __ ld(a1, ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX)); | |
| 2340 __ ld(a1, FieldMemOperand(a1, GlobalObject::kNativeContextOffset)); | |
| 2341 __ ld(a1, ContextOperand(a1, Context::ITERATOR_RESULT_MAP_INDEX)); | |
| 2342 __ pop(a2); | |
| 2343 __ li(a3, Operand(isolate()->factory()->ToBoolean(done))); | |
| 2344 __ li(a4, Operand(isolate()->factory()->empty_fixed_array())); | |
| 2345 __ sd(a1, FieldMemOperand(v0, HeapObject::kMapOffset)); | |
| 2346 __ sd(a4, FieldMemOperand(v0, JSObject::kPropertiesOffset)); | |
| 2347 __ sd(a4, FieldMemOperand(v0, JSObject::kElementsOffset)); | |
| 2348 __ sd(a2, | |
| 2349 FieldMemOperand(v0, JSGeneratorObject::kResultValuePropertyOffset)); | |
| 2350 __ sd(a3, | |
| 2351 FieldMemOperand(v0, JSGeneratorObject::kResultDonePropertyOffset)); | |
| 2352 | |
| 2353 // Only the value field needs a write barrier, as the other values are in the | |
| 2354 // root set. | |
| 2355 __ RecordWriteField(v0, JSGeneratorObject::kResultValuePropertyOffset, | |
| 2356 a2, a3, kRAHasBeenSaved, kDontSaveFPRegs); | |
| 2357 } | |
| 2358 | |
| 2359 | |
| 2360 void FullCodeGenerator::EmitNamedPropertyLoad(Property* prop) { | |
| 2361 SetExpressionPosition(prop); | |
| 2362 Literal* key = prop->key()->AsLiteral(); | |
| 2363 DCHECK(!prop->IsSuperAccess()); | |
| 2364 | |
| 2365 __ li(LoadDescriptor::NameRegister(), Operand(key->value())); | |
| 2366 __ li(LoadDescriptor::SlotRegister(), | |
| 2367 Operand(SmiFromSlot(prop->PropertyFeedbackSlot()))); | |
| 2368 CallLoadIC(NOT_INSIDE_TYPEOF, language_mode()); | |
| 2369 } | |
| 2370 | |
| 2371 | |
| 2372 void FullCodeGenerator::EmitNamedSuperPropertyLoad(Property* prop) { | |
| 2373 // Stack: receiver, home_object. | |
| 2374 SetExpressionPosition(prop); | |
| 2375 | |
| 2376 Literal* key = prop->key()->AsLiteral(); | |
| 2377 DCHECK(!key->value()->IsSmi()); | |
| 2378 DCHECK(prop->IsSuperAccess()); | |
| 2379 | |
| 2380 __ Push(key->value()); | |
| 2381 __ Push(Smi::FromInt(language_mode())); | |
| 2382 __ CallRuntime(Runtime::kLoadFromSuper, 4); | |
| 2383 } | |
| 2384 | |
| 2385 | |
| 2386 void FullCodeGenerator::EmitKeyedPropertyLoad(Property* prop) { | |
| 2387 // Call keyed load IC. It has register arguments receiver and key. | |
| 2388 SetExpressionPosition(prop); | |
| 2389 | |
| 2390 Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate(), language_mode()).code(); | |
| 2391 __ li(LoadDescriptor::SlotRegister(), | |
| 2392 Operand(SmiFromSlot(prop->PropertyFeedbackSlot()))); | |
| 2393 CallIC(ic); | |
| 2394 } | |
| 2395 | |
| 2396 | |
| 2397 void FullCodeGenerator::EmitKeyedSuperPropertyLoad(Property* prop) { | |
| 2398 // Stack: receiver, home_object, key. | |
| 2399 SetExpressionPosition(prop); | |
| 2400 __ Push(Smi::FromInt(language_mode())); | |
| 2401 __ CallRuntime(Runtime::kLoadKeyedFromSuper, 4); | |
| 2402 } | |
| 2403 | |
| 2404 | |
| 2405 void FullCodeGenerator::EmitInlineSmiBinaryOp(BinaryOperation* expr, | |
| 2406 Token::Value op, | |
| 2407 Expression* left_expr, | |
| 2408 Expression* right_expr) { | |
| 2409 Label done, smi_case, stub_call; | |
| 2410 | |
| 2411 Register scratch1 = a2; | |
| 2412 Register scratch2 = a3; | |
| 2413 | |
| 2414 // Get the arguments. | |
| 2415 Register left = a1; | |
| 2416 Register right = a0; | |
| 2417 __ pop(left); | |
| 2418 __ mov(a0, result_register()); | |
| 2419 | |
| 2420 // Perform combined smi check on both operands. | |
| 2421 __ Or(scratch1, left, Operand(right)); | |
| 2422 STATIC_ASSERT(kSmiTag == 0); | |
| 2423 JumpPatchSite patch_site(masm_); | |
| 2424 patch_site.EmitJumpIfSmi(scratch1, &smi_case); | |
| 2425 | |
| 2426 __ bind(&stub_call); | |
| 2427 Handle<Code> code = | |
| 2428 CodeFactory::BinaryOpIC(isolate(), op, strength(language_mode())).code(); | |
| 2429 CallIC(code, expr->BinaryOperationFeedbackId()); | |
| 2430 patch_site.EmitPatchInfo(); | |
| 2431 __ jmp(&done); | |
| 2432 | |
| 2433 __ bind(&smi_case); | |
| 2434 // Smi case. This code works the same way as the smi-smi case in the type | |
| 2435 // recording binary operation stub, see | |
| 2436 switch (op) { | |
| 2437 case Token::SAR: | |
| 2438 __ GetLeastBitsFromSmi(scratch1, right, 5); | |
| 2439 __ dsrav(right, left, scratch1); | |
| 2440 __ And(v0, right, Operand(0xffffffff00000000L)); | |
| 2441 break; | |
| 2442 case Token::SHL: { | |
| 2443 __ SmiUntag(scratch1, left); | |
| 2444 __ GetLeastBitsFromSmi(scratch2, right, 5); | |
| 2445 __ dsllv(scratch1, scratch1, scratch2); | |
| 2446 __ SmiTag(v0, scratch1); | |
| 2447 break; | |
| 2448 } | |
| 2449 case Token::SHR: { | |
| 2450 __ SmiUntag(scratch1, left); | |
| 2451 __ GetLeastBitsFromSmi(scratch2, right, 5); | |
| 2452 __ dsrlv(scratch1, scratch1, scratch2); | |
| 2453 __ And(scratch2, scratch1, 0x80000000); | |
| 2454 __ Branch(&stub_call, ne, scratch2, Operand(zero_reg)); | |
| 2455 __ SmiTag(v0, scratch1); | |
| 2456 break; | |
| 2457 } | |
| 2458 case Token::ADD: | |
| 2459 __ DadduAndCheckForOverflow(v0, left, right, scratch1); | |
| 2460 __ BranchOnOverflow(&stub_call, scratch1); | |
| 2461 break; | |
| 2462 case Token::SUB: | |
| 2463 __ DsubuAndCheckForOverflow(v0, left, right, scratch1); | |
| 2464 __ BranchOnOverflow(&stub_call, scratch1); | |
| 2465 break; | |
| 2466 case Token::MUL: { | |
| 2467 __ Dmulh(v0, left, right); | |
| 2468 __ dsra32(scratch2, v0, 0); | |
| 2469 __ sra(scratch1, v0, 31); | |
| 2470 __ Branch(USE_DELAY_SLOT, &stub_call, ne, scratch2, Operand(scratch1)); | |
| 2471 __ SmiTag(v0); | |
| 2472 __ Branch(USE_DELAY_SLOT, &done, ne, v0, Operand(zero_reg)); | |
| 2473 __ Daddu(scratch2, right, left); | |
| 2474 __ Branch(&stub_call, lt, scratch2, Operand(zero_reg)); | |
| 2475 DCHECK(Smi::FromInt(0) == 0); | |
| 2476 __ mov(v0, zero_reg); | |
| 2477 break; | |
| 2478 } | |
| 2479 case Token::BIT_OR: | |
| 2480 __ Or(v0, left, Operand(right)); | |
| 2481 break; | |
| 2482 case Token::BIT_AND: | |
| 2483 __ And(v0, left, Operand(right)); | |
| 2484 break; | |
| 2485 case Token::BIT_XOR: | |
| 2486 __ Xor(v0, left, Operand(right)); | |
| 2487 break; | |
| 2488 default: | |
| 2489 UNREACHABLE(); | |
| 2490 } | |
| 2491 | |
| 2492 __ bind(&done); | |
| 2493 context()->Plug(v0); | |
| 2494 } | |
| 2495 | |
| 2496 | |
| 2497 void FullCodeGenerator::EmitClassDefineProperties(ClassLiteral* lit, | |
| 2498 int* used_store_slots) { | |
| 2499 // Constructor is in v0. | |
| 2500 DCHECK(lit != NULL); | |
| 2501 __ push(v0); | |
| 2502 | |
| 2503 // No access check is needed here since the constructor is created by the | |
| 2504 // class literal. | |
| 2505 Register scratch = a1; | |
| 2506 __ ld(scratch, | |
| 2507 FieldMemOperand(v0, JSFunction::kPrototypeOrInitialMapOffset)); | |
| 2508 __ push(scratch); | |
| 2509 | |
| 2510 for (int i = 0; i < lit->properties()->length(); i++) { | |
| 2511 ObjectLiteral::Property* property = lit->properties()->at(i); | |
| 2512 Expression* value = property->value(); | |
| 2513 | |
| 2514 if (property->is_static()) { | |
| 2515 __ ld(scratch, MemOperand(sp, kPointerSize)); // constructor | |
| 2516 } else { | |
| 2517 __ ld(scratch, MemOperand(sp, 0)); // prototype | |
| 2518 } | |
| 2519 __ push(scratch); | |
| 2520 EmitPropertyKey(property, lit->GetIdForProperty(i)); | |
| 2521 | |
| 2522 // The static prototype property is read only. We handle the non computed | |
| 2523 // property name case in the parser. Since this is the only case where we | |
| 2524 // need to check for an own read only property we special case this so we do | |
| 2525 // not need to do this for every property. | |
| 2526 if (property->is_static() && property->is_computed_name()) { | |
| 2527 __ CallRuntime(Runtime::kThrowIfStaticPrototype, 1); | |
| 2528 __ push(v0); | |
| 2529 } | |
| 2530 | |
| 2531 VisitForStackValue(value); | |
| 2532 EmitSetHomeObjectIfNeeded(value, 2, | |
| 2533 lit->SlotForHomeObject(value, used_store_slots)); | |
| 2534 | |
| 2535 switch (property->kind()) { | |
| 2536 case ObjectLiteral::Property::CONSTANT: | |
| 2537 case ObjectLiteral::Property::MATERIALIZED_LITERAL: | |
| 2538 case ObjectLiteral::Property::PROTOTYPE: | |
| 2539 UNREACHABLE(); | |
| 2540 case ObjectLiteral::Property::COMPUTED: | |
| 2541 __ CallRuntime(Runtime::kDefineClassMethod, 3); | |
| 2542 break; | |
| 2543 | |
| 2544 case ObjectLiteral::Property::GETTER: | |
| 2545 __ li(a0, Operand(Smi::FromInt(DONT_ENUM))); | |
| 2546 __ push(a0); | |
| 2547 __ CallRuntime(Runtime::kDefineGetterPropertyUnchecked, 4); | |
| 2548 break; | |
| 2549 | |
| 2550 case ObjectLiteral::Property::SETTER: | |
| 2551 __ li(a0, Operand(Smi::FromInt(DONT_ENUM))); | |
| 2552 __ push(a0); | |
| 2553 __ CallRuntime(Runtime::kDefineSetterPropertyUnchecked, 4); | |
| 2554 break; | |
| 2555 | |
| 2556 default: | |
| 2557 UNREACHABLE(); | |
| 2558 } | |
| 2559 } | |
| 2560 | |
| 2561 // prototype | |
| 2562 __ CallRuntime(Runtime::kToFastProperties, 1); | |
| 2563 | |
| 2564 // constructor | |
| 2565 __ CallRuntime(Runtime::kToFastProperties, 1); | |
| 2566 | |
| 2567 if (is_strong(language_mode())) { | |
| 2568 __ ld(scratch, | |
| 2569 FieldMemOperand(v0, JSFunction::kPrototypeOrInitialMapOffset)); | |
| 2570 __ Push(v0, scratch); | |
| 2571 // TODO(conradw): It would be more efficient to define the properties with | |
| 2572 // the right attributes the first time round. | |
| 2573 // Freeze the prototype. | |
| 2574 __ CallRuntime(Runtime::kObjectFreeze, 1); | |
| 2575 // Freeze the constructor. | |
| 2576 __ CallRuntime(Runtime::kObjectFreeze, 1); | |
| 2577 } | |
| 2578 } | |
| 2579 | |
| 2580 | |
| 2581 void FullCodeGenerator::EmitBinaryOp(BinaryOperation* expr, Token::Value op) { | |
| 2582 __ mov(a0, result_register()); | |
| 2583 __ pop(a1); | |
| 2584 Handle<Code> code = | |
| 2585 CodeFactory::BinaryOpIC(isolate(), op, strength(language_mode())).code(); | |
| 2586 JumpPatchSite patch_site(masm_); // unbound, signals no inlined smi code. | |
| 2587 CallIC(code, expr->BinaryOperationFeedbackId()); | |
| 2588 patch_site.EmitPatchInfo(); | |
| 2589 context()->Plug(v0); | |
| 2590 } | |
| 2591 | |
| 2592 | |
| 2593 void FullCodeGenerator::EmitAssignment(Expression* expr, | |
| 2594 FeedbackVectorICSlot slot) { | |
| 2595 DCHECK(expr->IsValidReferenceExpressionOrThis()); | |
| 2596 | |
| 2597 Property* prop = expr->AsProperty(); | |
| 2598 LhsKind assign_type = Property::GetAssignType(prop); | |
| 2599 | |
| 2600 switch (assign_type) { | |
| 2601 case VARIABLE: { | |
| 2602 Variable* var = expr->AsVariableProxy()->var(); | |
| 2603 EffectContext context(this); | |
| 2604 EmitVariableAssignment(var, Token::ASSIGN, slot); | |
| 2605 break; | |
| 2606 } | |
| 2607 case NAMED_PROPERTY: { | |
| 2608 __ push(result_register()); // Preserve value. | |
| 2609 VisitForAccumulatorValue(prop->obj()); | |
| 2610 __ mov(StoreDescriptor::ReceiverRegister(), result_register()); | |
| 2611 __ pop(StoreDescriptor::ValueRegister()); // Restore value. | |
| 2612 __ li(StoreDescriptor::NameRegister(), | |
| 2613 Operand(prop->key()->AsLiteral()->value())); | |
| 2614 if (FLAG_vector_stores) EmitLoadStoreICSlot(slot); | |
| 2615 CallStoreIC(); | |
| 2616 break; | |
| 2617 } | |
| 2618 case NAMED_SUPER_PROPERTY: { | |
| 2619 __ Push(v0); | |
| 2620 VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); | |
| 2621 VisitForAccumulatorValue( | |
| 2622 prop->obj()->AsSuperPropertyReference()->home_object()); | |
| 2623 // stack: value, this; v0: home_object | |
| 2624 Register scratch = a2; | |
| 2625 Register scratch2 = a3; | |
| 2626 __ mov(scratch, result_register()); // home_object | |
| 2627 __ ld(v0, MemOperand(sp, kPointerSize)); // value | |
| 2628 __ ld(scratch2, MemOperand(sp, 0)); // this | |
| 2629 __ sd(scratch2, MemOperand(sp, kPointerSize)); // this | |
| 2630 __ sd(scratch, MemOperand(sp, 0)); // home_object | |
| 2631 // stack: this, home_object; v0: value | |
| 2632 EmitNamedSuperPropertyStore(prop); | |
| 2633 break; | |
| 2634 } | |
| 2635 case KEYED_SUPER_PROPERTY: { | |
| 2636 __ Push(v0); | |
| 2637 VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); | |
| 2638 VisitForStackValue( | |
| 2639 prop->obj()->AsSuperPropertyReference()->home_object()); | |
| 2640 VisitForAccumulatorValue(prop->key()); | |
| 2641 Register scratch = a2; | |
| 2642 Register scratch2 = a3; | |
| 2643 __ ld(scratch2, MemOperand(sp, 2 * kPointerSize)); // value | |
| 2644 // stack: value, this, home_object; v0: key, a3: value | |
| 2645 __ ld(scratch, MemOperand(sp, kPointerSize)); // this | |
| 2646 __ sd(scratch, MemOperand(sp, 2 * kPointerSize)); | |
| 2647 __ ld(scratch, MemOperand(sp, 0)); // home_object | |
| 2648 __ sd(scratch, MemOperand(sp, kPointerSize)); | |
| 2649 __ sd(v0, MemOperand(sp, 0)); | |
| 2650 __ Move(v0, scratch2); | |
| 2651 // stack: this, home_object, key; v0: value. | |
| 2652 EmitKeyedSuperPropertyStore(prop); | |
| 2653 break; | |
| 2654 } | |
| 2655 case KEYED_PROPERTY: { | |
| 2656 __ push(result_register()); // Preserve value. | |
| 2657 VisitForStackValue(prop->obj()); | |
| 2658 VisitForAccumulatorValue(prop->key()); | |
| 2659 __ Move(StoreDescriptor::NameRegister(), result_register()); | |
| 2660 __ Pop(StoreDescriptor::ValueRegister(), | |
| 2661 StoreDescriptor::ReceiverRegister()); | |
| 2662 if (FLAG_vector_stores) EmitLoadStoreICSlot(slot); | |
| 2663 Handle<Code> ic = | |
| 2664 CodeFactory::KeyedStoreIC(isolate(), language_mode()).code(); | |
| 2665 CallIC(ic); | |
| 2666 break; | |
| 2667 } | |
| 2668 } | |
| 2669 context()->Plug(v0); | |
| 2670 } | |
| 2671 | |
| 2672 | |
| 2673 void FullCodeGenerator::EmitStoreToStackLocalOrContextSlot( | |
| 2674 Variable* var, MemOperand location) { | |
| 2675 __ sd(result_register(), location); | |
| 2676 if (var->IsContextSlot()) { | |
| 2677 // RecordWrite may destroy all its register arguments. | |
| 2678 __ Move(a3, result_register()); | |
| 2679 int offset = Context::SlotOffset(var->index()); | |
| 2680 __ RecordWriteContextSlot( | |
| 2681 a1, offset, a3, a2, kRAHasBeenSaved, kDontSaveFPRegs); | |
| 2682 } | |
| 2683 } | |
| 2684 | |
| 2685 | |
| 2686 void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op, | |
| 2687 FeedbackVectorICSlot slot) { | |
| 2688 if (var->IsUnallocated()) { | |
| 2689 // Global var, const, or let. | |
| 2690 __ mov(StoreDescriptor::ValueRegister(), result_register()); | |
| 2691 __ li(StoreDescriptor::NameRegister(), Operand(var->name())); | |
| 2692 __ ld(StoreDescriptor::ReceiverRegister(), GlobalObjectOperand()); | |
| 2693 if (FLAG_vector_stores) EmitLoadStoreICSlot(slot); | |
| 2694 CallStoreIC(); | |
| 2695 | |
| 2696 } else if (var->IsGlobalSlot()) { | |
| 2697 // Global var, const, or let. | |
| 2698 DCHECK(var->index() > 0); | |
| 2699 DCHECK(var->IsStaticGlobalObjectProperty()); | |
| 2700 // Each var occupies two slots in the context: for reads and writes. | |
| 2701 int slot_index = var->index() + 1; | |
| 2702 int depth = scope()->ContextChainLength(var->scope()); | |
| 2703 __ li(StoreGlobalViaContextDescriptor::DepthRegister(), | |
| 2704 Operand(Smi::FromInt(depth))); | |
| 2705 __ li(StoreGlobalViaContextDescriptor::SlotRegister(), | |
| 2706 Operand(Smi::FromInt(slot_index))); | |
| 2707 __ li(StoreGlobalViaContextDescriptor::NameRegister(), | |
| 2708 Operand(var->name())); | |
| 2709 __ mov(StoreGlobalViaContextDescriptor::ValueRegister(), result_register()); | |
| 2710 StoreGlobalViaContextStub stub(isolate(), depth, language_mode()); | |
| 2711 __ CallStub(&stub); | |
| 2712 | |
| 2713 } else if (var->mode() == LET && op != Token::INIT_LET) { | |
| 2714 // Non-initializing assignment to let variable needs a write barrier. | |
| 2715 DCHECK(!var->IsLookupSlot()); | |
| 2716 DCHECK(var->IsStackAllocated() || var->IsContextSlot()); | |
| 2717 Label assign; | |
| 2718 MemOperand location = VarOperand(var, a1); | |
| 2719 __ ld(a3, location); | |
| 2720 __ LoadRoot(a4, Heap::kTheHoleValueRootIndex); | |
| 2721 __ Branch(&assign, ne, a3, Operand(a4)); | |
| 2722 __ li(a3, Operand(var->name())); | |
| 2723 __ push(a3); | |
| 2724 __ CallRuntime(Runtime::kThrowReferenceError, 1); | |
| 2725 // Perform the assignment. | |
| 2726 __ bind(&assign); | |
| 2727 EmitStoreToStackLocalOrContextSlot(var, location); | |
| 2728 | |
| 2729 } else if (var->mode() == CONST && op != Token::INIT_CONST) { | |
| 2730 // Assignment to const variable needs a write barrier. | |
| 2731 DCHECK(!var->IsLookupSlot()); | |
| 2732 DCHECK(var->IsStackAllocated() || var->IsContextSlot()); | |
| 2733 Label const_error; | |
| 2734 MemOperand location = VarOperand(var, a1); | |
| 2735 __ ld(a3, location); | |
| 2736 __ LoadRoot(at, Heap::kTheHoleValueRootIndex); | |
| 2737 __ Branch(&const_error, ne, a3, Operand(at)); | |
| 2738 __ li(a3, Operand(var->name())); | |
| 2739 __ push(a3); | |
| 2740 __ CallRuntime(Runtime::kThrowReferenceError, 1); | |
| 2741 __ bind(&const_error); | |
| 2742 __ CallRuntime(Runtime::kThrowConstAssignError, 0); | |
| 2743 | |
| 2744 } else if (var->is_this() && op == Token::INIT_CONST) { | |
| 2745 // Initializing assignment to const {this} needs a write barrier. | |
| 2746 DCHECK(var->IsStackAllocated() || var->IsContextSlot()); | |
| 2747 Label uninitialized_this; | |
| 2748 MemOperand location = VarOperand(var, a1); | |
| 2749 __ ld(a3, location); | |
| 2750 __ LoadRoot(at, Heap::kTheHoleValueRootIndex); | |
| 2751 __ Branch(&uninitialized_this, eq, a3, Operand(at)); | |
| 2752 __ li(a0, Operand(var->name())); | |
| 2753 __ Push(a0); | |
| 2754 __ CallRuntime(Runtime::kThrowReferenceError, 1); | |
| 2755 __ bind(&uninitialized_this); | |
| 2756 EmitStoreToStackLocalOrContextSlot(var, location); | |
| 2757 | |
| 2758 } else if (!var->is_const_mode() || op == Token::INIT_CONST) { | |
| 2759 if (var->IsLookupSlot()) { | |
| 2760 // Assignment to var. | |
| 2761 __ li(a4, Operand(var->name())); | |
| 2762 __ li(a3, Operand(Smi::FromInt(language_mode()))); | |
| 2763 // jssp[0] : language mode. | |
| 2764 // jssp[8] : name. | |
| 2765 // jssp[16] : context. | |
| 2766 // jssp[24] : value. | |
| 2767 __ Push(v0, cp, a4, a3); | |
| 2768 __ CallRuntime(Runtime::kStoreLookupSlot, 4); | |
| 2769 } else { | |
| 2770 // Assignment to var or initializing assignment to let/const in harmony | |
| 2771 // mode. | |
| 2772 DCHECK((var->IsStackAllocated() || var->IsContextSlot())); | |
| 2773 MemOperand location = VarOperand(var, a1); | |
| 2774 if (generate_debug_code_ && op == Token::INIT_LET) { | |
| 2775 // Check for an uninitialized let binding. | |
| 2776 __ ld(a2, location); | |
| 2777 __ LoadRoot(a4, Heap::kTheHoleValueRootIndex); | |
| 2778 __ Check(eq, kLetBindingReInitialization, a2, Operand(a4)); | |
| 2779 } | |
| 2780 EmitStoreToStackLocalOrContextSlot(var, location); | |
| 2781 } | |
| 2782 | |
| 2783 } else if (op == Token::INIT_CONST_LEGACY) { | |
| 2784 // Const initializers need a write barrier. | |
| 2785 DCHECK(!var->IsParameter()); // No const parameters. | |
| 2786 if (var->IsLookupSlot()) { | |
| 2787 __ li(a0, Operand(var->name())); | |
| 2788 __ Push(v0, cp, a0); // Context and name. | |
| 2789 __ CallRuntime(Runtime::kInitializeLegacyConstLookupSlot, 3); | |
| 2790 } else { | |
| 2791 DCHECK(var->IsStackAllocated() || var->IsContextSlot()); | |
| 2792 Label skip; | |
| 2793 MemOperand location = VarOperand(var, a1); | |
| 2794 __ ld(a2, location); | |
| 2795 __ LoadRoot(at, Heap::kTheHoleValueRootIndex); | |
| 2796 __ Branch(&skip, ne, a2, Operand(at)); | |
| 2797 EmitStoreToStackLocalOrContextSlot(var, location); | |
| 2798 __ bind(&skip); | |
| 2799 } | |
| 2800 | |
| 2801 } else { | |
| 2802 DCHECK(var->mode() == CONST_LEGACY && op != Token::INIT_CONST_LEGACY); | |
| 2803 if (is_strict(language_mode())) { | |
| 2804 __ CallRuntime(Runtime::kThrowConstAssignError, 0); | |
| 2805 } | |
| 2806 // Silently ignore store in sloppy mode. | |
| 2807 } | |
| 2808 } | |
| 2809 | |
| 2810 | |
| 2811 void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) { | |
| 2812 // Assignment to a property, using a named store IC. | |
| 2813 Property* prop = expr->target()->AsProperty(); | |
| 2814 DCHECK(prop != NULL); | |
| 2815 DCHECK(prop->key()->IsLiteral()); | |
| 2816 | |
| 2817 __ mov(StoreDescriptor::ValueRegister(), result_register()); | |
| 2818 __ li(StoreDescriptor::NameRegister(), | |
| 2819 Operand(prop->key()->AsLiteral()->value())); | |
| 2820 __ pop(StoreDescriptor::ReceiverRegister()); | |
| 2821 if (FLAG_vector_stores) { | |
| 2822 EmitLoadStoreICSlot(expr->AssignmentSlot()); | |
| 2823 CallStoreIC(); | |
| 2824 } else { | |
| 2825 CallStoreIC(expr->AssignmentFeedbackId()); | |
| 2826 } | |
| 2827 | |
| 2828 PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); | |
| 2829 context()->Plug(v0); | |
| 2830 } | |
| 2831 | |
| 2832 | |
| 2833 void FullCodeGenerator::EmitNamedSuperPropertyStore(Property* prop) { | |
| 2834 // Assignment to named property of super. | |
| 2835 // v0 : value | |
| 2836 // stack : receiver ('this'), home_object | |
| 2837 DCHECK(prop != NULL); | |
| 2838 Literal* key = prop->key()->AsLiteral(); | |
| 2839 DCHECK(key != NULL); | |
| 2840 | |
| 2841 __ Push(key->value()); | |
| 2842 __ Push(v0); | |
| 2843 __ CallRuntime((is_strict(language_mode()) ? Runtime::kStoreToSuper_Strict | |
| 2844 : Runtime::kStoreToSuper_Sloppy), | |
| 2845 4); | |
| 2846 } | |
| 2847 | |
| 2848 | |
| 2849 void FullCodeGenerator::EmitKeyedSuperPropertyStore(Property* prop) { | |
| 2850 // Assignment to named property of super. | |
| 2851 // v0 : value | |
| 2852 // stack : receiver ('this'), home_object, key | |
| 2853 DCHECK(prop != NULL); | |
| 2854 | |
| 2855 __ Push(v0); | |
| 2856 __ CallRuntime( | |
| 2857 (is_strict(language_mode()) ? Runtime::kStoreKeyedToSuper_Strict | |
| 2858 : Runtime::kStoreKeyedToSuper_Sloppy), | |
| 2859 4); | |
| 2860 } | |
| 2861 | |
| 2862 | |
| 2863 void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) { | |
| 2864 // Assignment to a property, using a keyed store IC. | |
| 2865 // Call keyed store IC. | |
| 2866 // The arguments are: | |
| 2867 // - a0 is the value, | |
| 2868 // - a1 is the key, | |
| 2869 // - a2 is the receiver. | |
| 2870 __ mov(StoreDescriptor::ValueRegister(), result_register()); | |
| 2871 __ Pop(StoreDescriptor::ReceiverRegister(), StoreDescriptor::NameRegister()); | |
| 2872 DCHECK(StoreDescriptor::ValueRegister().is(a0)); | |
| 2873 | |
| 2874 Handle<Code> ic = | |
| 2875 CodeFactory::KeyedStoreIC(isolate(), language_mode()).code(); | |
| 2876 if (FLAG_vector_stores) { | |
| 2877 EmitLoadStoreICSlot(expr->AssignmentSlot()); | |
| 2878 CallIC(ic); | |
| 2879 } else { | |
| 2880 CallIC(ic, expr->AssignmentFeedbackId()); | |
| 2881 } | |
| 2882 | |
| 2883 PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); | |
| 2884 context()->Plug(v0); | |
| 2885 } | |
| 2886 | |
| 2887 | |
| 2888 void FullCodeGenerator::VisitProperty(Property* expr) { | |
| 2889 Comment cmnt(masm_, "[ Property"); | |
| 2890 SetExpressionPosition(expr); | |
| 2891 | |
| 2892 Expression* key = expr->key(); | |
| 2893 | |
| 2894 if (key->IsPropertyName()) { | |
| 2895 if (!expr->IsSuperAccess()) { | |
| 2896 VisitForAccumulatorValue(expr->obj()); | |
| 2897 __ Move(LoadDescriptor::ReceiverRegister(), v0); | |
| 2898 EmitNamedPropertyLoad(expr); | |
| 2899 } else { | |
| 2900 VisitForStackValue(expr->obj()->AsSuperPropertyReference()->this_var()); | |
| 2901 VisitForStackValue( | |
| 2902 expr->obj()->AsSuperPropertyReference()->home_object()); | |
| 2903 EmitNamedSuperPropertyLoad(expr); | |
| 2904 } | |
| 2905 } else { | |
| 2906 if (!expr->IsSuperAccess()) { | |
| 2907 VisitForStackValue(expr->obj()); | |
| 2908 VisitForAccumulatorValue(expr->key()); | |
| 2909 __ Move(LoadDescriptor::NameRegister(), v0); | |
| 2910 __ pop(LoadDescriptor::ReceiverRegister()); | |
| 2911 EmitKeyedPropertyLoad(expr); | |
| 2912 } else { | |
| 2913 VisitForStackValue(expr->obj()->AsSuperPropertyReference()->this_var()); | |
| 2914 VisitForStackValue( | |
| 2915 expr->obj()->AsSuperPropertyReference()->home_object()); | |
| 2916 VisitForStackValue(expr->key()); | |
| 2917 EmitKeyedSuperPropertyLoad(expr); | |
| 2918 } | |
| 2919 } | |
| 2920 PrepareForBailoutForId(expr->LoadId(), TOS_REG); | |
| 2921 context()->Plug(v0); | |
| 2922 } | |
| 2923 | |
| 2924 | |
| 2925 void FullCodeGenerator::CallIC(Handle<Code> code, | |
| 2926 TypeFeedbackId id) { | |
| 2927 ic_total_count_++; | |
| 2928 __ Call(code, RelocInfo::CODE_TARGET, id); | |
| 2929 } | |
| 2930 | |
| 2931 | |
| 2932 // Code common for calls using the IC. | |
| 2933 void FullCodeGenerator::EmitCallWithLoadIC(Call* expr) { | |
| 2934 Expression* callee = expr->expression(); | |
| 2935 | |
| 2936 CallICState::CallType call_type = | |
| 2937 callee->IsVariableProxy() ? CallICState::FUNCTION : CallICState::METHOD; | |
| 2938 | |
| 2939 // Get the target function. | |
| 2940 if (call_type == CallICState::FUNCTION) { | |
| 2941 { StackValueContext context(this); | |
| 2942 EmitVariableLoad(callee->AsVariableProxy()); | |
| 2943 PrepareForBailout(callee, NO_REGISTERS); | |
| 2944 } | |
| 2945 // Push undefined as receiver. This is patched in the method prologue if it | |
| 2946 // is a sloppy mode method. | |
| 2947 __ LoadRoot(at, Heap::kUndefinedValueRootIndex); | |
| 2948 __ push(at); | |
| 2949 } else { | |
| 2950 // Load the function from the receiver. | |
| 2951 DCHECK(callee->IsProperty()); | |
| 2952 DCHECK(!callee->AsProperty()->IsSuperAccess()); | |
| 2953 __ ld(LoadDescriptor::ReceiverRegister(), MemOperand(sp, 0)); | |
| 2954 EmitNamedPropertyLoad(callee->AsProperty()); | |
| 2955 PrepareForBailoutForId(callee->AsProperty()->LoadId(), TOS_REG); | |
| 2956 // Push the target function under the receiver. | |
| 2957 __ ld(at, MemOperand(sp, 0)); | |
| 2958 __ push(at); | |
| 2959 __ sd(v0, MemOperand(sp, kPointerSize)); | |
| 2960 } | |
| 2961 | |
| 2962 EmitCall(expr, call_type); | |
| 2963 } | |
| 2964 | |
| 2965 | |
| 2966 void FullCodeGenerator::EmitSuperCallWithLoadIC(Call* expr) { | |
| 2967 SetExpressionPosition(expr); | |
| 2968 Expression* callee = expr->expression(); | |
| 2969 DCHECK(callee->IsProperty()); | |
| 2970 Property* prop = callee->AsProperty(); | |
| 2971 DCHECK(prop->IsSuperAccess()); | |
| 2972 | |
| 2973 Literal* key = prop->key()->AsLiteral(); | |
| 2974 DCHECK(!key->value()->IsSmi()); | |
| 2975 // Load the function from the receiver. | |
| 2976 const Register scratch = a1; | |
| 2977 SuperPropertyReference* super_ref = prop->obj()->AsSuperPropertyReference(); | |
| 2978 VisitForAccumulatorValue(super_ref->home_object()); | |
| 2979 __ mov(scratch, v0); | |
| 2980 VisitForAccumulatorValue(super_ref->this_var()); | |
| 2981 __ Push(scratch, v0, v0, scratch); | |
| 2982 __ Push(key->value()); | |
| 2983 __ Push(Smi::FromInt(language_mode())); | |
| 2984 | |
| 2985 // Stack here: | |
| 2986 // - home_object | |
| 2987 // - this (receiver) | |
| 2988 // - this (receiver) <-- LoadFromSuper will pop here and below. | |
| 2989 // - home_object | |
| 2990 // - key | |
| 2991 // - language_mode | |
| 2992 __ CallRuntime(Runtime::kLoadFromSuper, 4); | |
| 2993 | |
| 2994 // Replace home_object with target function. | |
| 2995 __ sd(v0, MemOperand(sp, kPointerSize)); | |
| 2996 | |
| 2997 // Stack here: | |
| 2998 // - target function | |
| 2999 // - this (receiver) | |
| 3000 EmitCall(expr, CallICState::METHOD); | |
| 3001 } | |
| 3002 | |
| 3003 | |
| 3004 // Code common for calls using the IC. | |
| 3005 void FullCodeGenerator::EmitKeyedCallWithLoadIC(Call* expr, | |
| 3006 Expression* key) { | |
| 3007 // Load the key. | |
| 3008 VisitForAccumulatorValue(key); | |
| 3009 | |
| 3010 Expression* callee = expr->expression(); | |
| 3011 | |
| 3012 // Load the function from the receiver. | |
| 3013 DCHECK(callee->IsProperty()); | |
| 3014 __ ld(LoadDescriptor::ReceiverRegister(), MemOperand(sp, 0)); | |
| 3015 __ Move(LoadDescriptor::NameRegister(), v0); | |
| 3016 EmitKeyedPropertyLoad(callee->AsProperty()); | |
| 3017 PrepareForBailoutForId(callee->AsProperty()->LoadId(), TOS_REG); | |
| 3018 | |
| 3019 // Push the target function under the receiver. | |
| 3020 __ ld(at, MemOperand(sp, 0)); | |
| 3021 __ push(at); | |
| 3022 __ sd(v0, MemOperand(sp, kPointerSize)); | |
| 3023 | |
| 3024 EmitCall(expr, CallICState::METHOD); | |
| 3025 } | |
| 3026 | |
| 3027 | |
| 3028 void FullCodeGenerator::EmitKeyedSuperCallWithLoadIC(Call* expr) { | |
| 3029 Expression* callee = expr->expression(); | |
| 3030 DCHECK(callee->IsProperty()); | |
| 3031 Property* prop = callee->AsProperty(); | |
| 3032 DCHECK(prop->IsSuperAccess()); | |
| 3033 | |
| 3034 SetExpressionPosition(prop); | |
| 3035 // Load the function from the receiver. | |
| 3036 const Register scratch = a1; | |
| 3037 SuperPropertyReference* super_ref = prop->obj()->AsSuperPropertyReference(); | |
| 3038 VisitForAccumulatorValue(super_ref->home_object()); | |
| 3039 __ Move(scratch, v0); | |
| 3040 VisitForAccumulatorValue(super_ref->this_var()); | |
| 3041 __ Push(scratch, v0, v0, scratch); | |
| 3042 VisitForStackValue(prop->key()); | |
| 3043 __ Push(Smi::FromInt(language_mode())); | |
| 3044 | |
| 3045 // Stack here: | |
| 3046 // - home_object | |
| 3047 // - this (receiver) | |
| 3048 // - this (receiver) <-- LoadKeyedFromSuper will pop here and below. | |
| 3049 // - home_object | |
| 3050 // - key | |
| 3051 // - language_mode | |
| 3052 __ CallRuntime(Runtime::kLoadKeyedFromSuper, 4); | |
| 3053 | |
| 3054 // Replace home_object with target function. | |
| 3055 __ sd(v0, MemOperand(sp, kPointerSize)); | |
| 3056 | |
| 3057 // Stack here: | |
| 3058 // - target function | |
| 3059 // - this (receiver) | |
| 3060 EmitCall(expr, CallICState::METHOD); | |
| 3061 } | |
| 3062 | |
| 3063 | |
| 3064 void FullCodeGenerator::EmitCall(Call* expr, CallICState::CallType call_type) { | |
| 3065 // Load the arguments. | |
| 3066 ZoneList<Expression*>* args = expr->arguments(); | |
| 3067 int arg_count = args->length(); | |
| 3068 for (int i = 0; i < arg_count; i++) { | |
| 3069 VisitForStackValue(args->at(i)); | |
| 3070 } | |
| 3071 | |
| 3072 // Record source position of the IC call. | |
| 3073 SetCallPosition(expr, arg_count); | |
| 3074 Handle<Code> ic = CodeFactory::CallIC(isolate(), arg_count, call_type).code(); | |
| 3075 __ li(a3, Operand(SmiFromSlot(expr->CallFeedbackICSlot()))); | |
| 3076 __ ld(a1, MemOperand(sp, (arg_count + 1) * kPointerSize)); | |
| 3077 // Don't assign a type feedback id to the IC, since type feedback is provided | |
| 3078 // by the vector above. | |
| 3079 CallIC(ic); | |
| 3080 RecordJSReturnSite(expr); | |
| 3081 // Restore context register. | |
| 3082 __ ld(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); | |
| 3083 context()->DropAndPlug(1, v0); | |
| 3084 } | |
| 3085 | |
| 3086 | |
| 3087 void FullCodeGenerator::EmitResolvePossiblyDirectEval(int arg_count) { | |
| 3088 // a6: copy of the first argument or undefined if it doesn't exist. | |
| 3089 if (arg_count > 0) { | |
| 3090 __ ld(a6, MemOperand(sp, arg_count * kPointerSize)); | |
| 3091 } else { | |
| 3092 __ LoadRoot(a6, Heap::kUndefinedValueRootIndex); | |
| 3093 } | |
| 3094 | |
| 3095 // a5: the receiver of the enclosing function. | |
| 3096 __ ld(a5, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); | |
| 3097 | |
| 3098 // a4: the language mode. | |
| 3099 __ li(a4, Operand(Smi::FromInt(language_mode()))); | |
| 3100 | |
| 3101 // a1: the start position of the scope the calls resides in. | |
| 3102 __ li(a1, Operand(Smi::FromInt(scope()->start_position()))); | |
| 3103 | |
| 3104 // Do the runtime call. | |
| 3105 __ Push(a6, a5, a4, a1); | |
| 3106 __ CallRuntime(Runtime::kResolvePossiblyDirectEval, 5); | |
| 3107 } | |
| 3108 | |
| 3109 | |
| 3110 // See http://www.ecma-international.org/ecma-262/6.0/#sec-function-calls. | |
| 3111 void FullCodeGenerator::PushCalleeAndWithBaseObject(Call* expr) { | |
| 3112 VariableProxy* callee = expr->expression()->AsVariableProxy(); | |
| 3113 if (callee->var()->IsLookupSlot()) { | |
| 3114 Label slow, done; | |
| 3115 | |
| 3116 SetExpressionPosition(callee); | |
| 3117 // Generate code for loading from variables potentially shadowed by | |
| 3118 // eval-introduced variables. | |
| 3119 EmitDynamicLookupFastCase(callee, NOT_INSIDE_TYPEOF, &slow, &done); | |
| 3120 | |
| 3121 __ bind(&slow); | |
| 3122 // Call the runtime to find the function to call (returned in v0) | |
| 3123 // and the object holding it (returned in v1). | |
| 3124 DCHECK(!context_register().is(a2)); | |
| 3125 __ li(a2, Operand(callee->name())); | |
| 3126 __ Push(context_register(), a2); | |
| 3127 __ CallRuntime(Runtime::kLoadLookupSlot, 2); | |
| 3128 __ Push(v0, v1); // Function, receiver. | |
| 3129 PrepareForBailoutForId(expr->LookupId(), NO_REGISTERS); | |
| 3130 | |
| 3131 // If fast case code has been generated, emit code to push the | |
| 3132 // function and receiver and have the slow path jump around this | |
| 3133 // code. | |
| 3134 if (done.is_linked()) { | |
| 3135 Label call; | |
| 3136 __ Branch(&call); | |
| 3137 __ bind(&done); | |
| 3138 // Push function. | |
| 3139 __ push(v0); | |
| 3140 // The receiver is implicitly the global receiver. Indicate this | |
| 3141 // by passing the hole to the call function stub. | |
| 3142 __ LoadRoot(a1, Heap::kUndefinedValueRootIndex); | |
| 3143 __ push(a1); | |
| 3144 __ bind(&call); | |
| 3145 } | |
| 3146 } else { | |
| 3147 VisitForStackValue(callee); | |
| 3148 // refEnv.WithBaseObject() | |
| 3149 __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); | |
| 3150 __ push(a2); // Reserved receiver slot. | |
| 3151 } | |
| 3152 } | |
| 3153 | |
| 3154 | |
| 3155 void FullCodeGenerator::VisitCall(Call* expr) { | |
| 3156 #ifdef DEBUG | |
| 3157 // We want to verify that RecordJSReturnSite gets called on all paths | |
| 3158 // through this function. Avoid early returns. | |
| 3159 expr->return_is_recorded_ = false; | |
| 3160 #endif | |
| 3161 | |
| 3162 Comment cmnt(masm_, "[ Call"); | |
| 3163 Expression* callee = expr->expression(); | |
| 3164 Call::CallType call_type = expr->GetCallType(isolate()); | |
| 3165 | |
| 3166 if (call_type == Call::POSSIBLY_EVAL_CALL) { | |
| 3167 // In a call to eval, we first call RuntimeHidden_ResolvePossiblyDirectEval | |
| 3168 // to resolve the function we need to call. Then we call the resolved | |
| 3169 // function using the given arguments. | |
| 3170 ZoneList<Expression*>* args = expr->arguments(); | |
| 3171 int arg_count = args->length(); | |
| 3172 PushCalleeAndWithBaseObject(expr); | |
| 3173 | |
| 3174 // Push the arguments. | |
| 3175 for (int i = 0; i < arg_count; i++) { | |
| 3176 VisitForStackValue(args->at(i)); | |
| 3177 } | |
| 3178 | |
| 3179 // Push a copy of the function (found below the arguments) and | |
| 3180 // resolve eval. | |
| 3181 __ ld(a1, MemOperand(sp, (arg_count + 1) * kPointerSize)); | |
| 3182 __ push(a1); | |
| 3183 EmitResolvePossiblyDirectEval(arg_count); | |
| 3184 | |
| 3185 // Touch up the stack with the resolved function. | |
| 3186 __ sd(v0, MemOperand(sp, (arg_count + 1) * kPointerSize)); | |
| 3187 | |
| 3188 PrepareForBailoutForId(expr->EvalId(), NO_REGISTERS); | |
| 3189 // Record source position for debugger. | |
| 3190 SetCallPosition(expr, arg_count); | |
| 3191 CallFunctionStub stub(isolate(), arg_count, NO_CALL_FUNCTION_FLAGS); | |
| 3192 __ ld(a1, MemOperand(sp, (arg_count + 1) * kPointerSize)); | |
| 3193 __ CallStub(&stub); | |
| 3194 RecordJSReturnSite(expr); | |
| 3195 // Restore context register. | |
| 3196 __ ld(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); | |
| 3197 context()->DropAndPlug(1, v0); | |
| 3198 } else if (call_type == Call::GLOBAL_CALL) { | |
| 3199 EmitCallWithLoadIC(expr); | |
| 3200 } else if (call_type == Call::LOOKUP_SLOT_CALL) { | |
| 3201 // Call to a lookup slot (dynamically introduced variable). | |
| 3202 PushCalleeAndWithBaseObject(expr); | |
| 3203 EmitCall(expr); | |
| 3204 } else if (call_type == Call::PROPERTY_CALL) { | |
| 3205 Property* property = callee->AsProperty(); | |
| 3206 bool is_named_call = property->key()->IsPropertyName(); | |
| 3207 if (property->IsSuperAccess()) { | |
| 3208 if (is_named_call) { | |
| 3209 EmitSuperCallWithLoadIC(expr); | |
| 3210 } else { | |
| 3211 EmitKeyedSuperCallWithLoadIC(expr); | |
| 3212 } | |
| 3213 } else { | |
| 3214 VisitForStackValue(property->obj()); | |
| 3215 if (is_named_call) { | |
| 3216 EmitCallWithLoadIC(expr); | |
| 3217 } else { | |
| 3218 EmitKeyedCallWithLoadIC(expr, property->key()); | |
| 3219 } | |
| 3220 } | |
| 3221 } else if (call_type == Call::SUPER_CALL) { | |
| 3222 EmitSuperConstructorCall(expr); | |
| 3223 } else { | |
| 3224 DCHECK(call_type == Call::OTHER_CALL); | |
| 3225 // Call to an arbitrary expression not handled specially above. | |
| 3226 VisitForStackValue(callee); | |
| 3227 __ LoadRoot(a1, Heap::kUndefinedValueRootIndex); | |
| 3228 __ push(a1); | |
| 3229 // Emit function call. | |
| 3230 EmitCall(expr); | |
| 3231 } | |
| 3232 | |
| 3233 #ifdef DEBUG | |
| 3234 // RecordJSReturnSite should have been called. | |
| 3235 DCHECK(expr->return_is_recorded_); | |
| 3236 #endif | |
| 3237 } | |
| 3238 | |
| 3239 | |
| 3240 void FullCodeGenerator::VisitCallNew(CallNew* expr) { | |
| 3241 Comment cmnt(masm_, "[ CallNew"); | |
| 3242 // According to ECMA-262, section 11.2.2, page 44, the function | |
| 3243 // expression in new calls must be evaluated before the | |
| 3244 // arguments. | |
| 3245 | |
| 3246 // Push constructor on the stack. If it's not a function it's used as | |
| 3247 // receiver for CALL_NON_FUNCTION, otherwise the value on the stack is | |
| 3248 // ignored. | |
| 3249 DCHECK(!expr->expression()->IsSuperPropertyReference()); | |
| 3250 VisitForStackValue(expr->expression()); | |
| 3251 | |
| 3252 // Push the arguments ("left-to-right") on the stack. | |
| 3253 ZoneList<Expression*>* args = expr->arguments(); | |
| 3254 int arg_count = args->length(); | |
| 3255 for (int i = 0; i < arg_count; i++) { | |
| 3256 VisitForStackValue(args->at(i)); | |
| 3257 } | |
| 3258 | |
| 3259 // Call the construct call builtin that handles allocation and | |
| 3260 // constructor invocation. | |
| 3261 SetConstructCallPosition(expr); | |
| 3262 | |
| 3263 // Load function and argument count into a1 and a0. | |
| 3264 __ li(a0, Operand(arg_count)); | |
| 3265 __ ld(a1, MemOperand(sp, arg_count * kPointerSize)); | |
| 3266 | |
| 3267 // Record call targets in unoptimized code. | |
| 3268 if (FLAG_pretenuring_call_new) { | |
| 3269 EnsureSlotContainsAllocationSite(expr->AllocationSiteFeedbackSlot()); | |
| 3270 DCHECK(expr->AllocationSiteFeedbackSlot().ToInt() == | |
| 3271 expr->CallNewFeedbackSlot().ToInt() + 1); | |
| 3272 } | |
| 3273 | |
| 3274 __ li(a2, FeedbackVector()); | |
| 3275 __ li(a3, Operand(SmiFromSlot(expr->CallNewFeedbackSlot()))); | |
| 3276 | |
| 3277 CallConstructStub stub(isolate(), RECORD_CONSTRUCTOR_TARGET); | |
| 3278 __ Call(stub.GetCode(), RelocInfo::CONSTRUCT_CALL); | |
| 3279 PrepareForBailoutForId(expr->ReturnId(), TOS_REG); | |
| 3280 context()->Plug(v0); | |
| 3281 } | |
| 3282 | |
| 3283 | |
| 3284 void FullCodeGenerator::EmitSuperConstructorCall(Call* expr) { | |
| 3285 SuperCallReference* super_call_ref = | |
| 3286 expr->expression()->AsSuperCallReference(); | |
| 3287 DCHECK_NOT_NULL(super_call_ref); | |
| 3288 | |
| 3289 EmitLoadSuperConstructor(super_call_ref); | |
| 3290 __ push(result_register()); | |
| 3291 | |
| 3292 // Push the arguments ("left-to-right") on the stack. | |
| 3293 ZoneList<Expression*>* args = expr->arguments(); | |
| 3294 int arg_count = args->length(); | |
| 3295 for (int i = 0; i < arg_count; i++) { | |
| 3296 VisitForStackValue(args->at(i)); | |
| 3297 } | |
| 3298 | |
| 3299 // Call the construct call builtin that handles allocation and | |
| 3300 // constructor invocation. | |
| 3301 SetConstructCallPosition(expr); | |
| 3302 | |
| 3303 // Load original constructor into a4. | |
| 3304 VisitForAccumulatorValue(super_call_ref->new_target_var()); | |
| 3305 __ mov(a4, result_register()); | |
| 3306 | |
| 3307 // Load function and argument count into a1 and a0. | |
| 3308 __ li(a0, Operand(arg_count)); | |
| 3309 __ ld(a1, MemOperand(sp, arg_count * kPointerSize)); | |
| 3310 | |
| 3311 // Record call targets in unoptimized code. | |
| 3312 if (FLAG_pretenuring_call_new) { | |
| 3313 UNREACHABLE(); | |
| 3314 /* TODO(dslomov): support pretenuring. | |
| 3315 EnsureSlotContainsAllocationSite(expr->AllocationSiteFeedbackSlot()); | |
| 3316 DCHECK(expr->AllocationSiteFeedbackSlot().ToInt() == | |
| 3317 expr->CallNewFeedbackSlot().ToInt() + 1); | |
| 3318 */ | |
| 3319 } | |
| 3320 | |
| 3321 __ li(a2, FeedbackVector()); | |
| 3322 __ li(a3, Operand(SmiFromSlot(expr->CallFeedbackSlot()))); | |
| 3323 | |
| 3324 CallConstructStub stub(isolate(), SUPER_CALL_RECORD_TARGET); | |
| 3325 __ Call(stub.GetCode(), RelocInfo::CONSTRUCT_CALL); | |
| 3326 | |
| 3327 RecordJSReturnSite(expr); | |
| 3328 | |
| 3329 context()->Plug(v0); | |
| 3330 } | |
| 3331 | |
| 3332 | |
| 3333 void FullCodeGenerator::EmitIsSmi(CallRuntime* expr) { | |
| 3334 ZoneList<Expression*>* args = expr->arguments(); | |
| 3335 DCHECK(args->length() == 1); | |
| 3336 | |
| 3337 VisitForAccumulatorValue(args->at(0)); | |
| 3338 | |
| 3339 Label materialize_true, materialize_false; | |
| 3340 Label* if_true = NULL; | |
| 3341 Label* if_false = NULL; | |
| 3342 Label* fall_through = NULL; | |
| 3343 context()->PrepareTest(&materialize_true, &materialize_false, | |
| 3344 &if_true, &if_false, &fall_through); | |
| 3345 | |
| 3346 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 3347 __ SmiTst(v0, a4); | |
| 3348 Split(eq, a4, Operand(zero_reg), if_true, if_false, fall_through); | |
| 3349 | |
| 3350 context()->Plug(if_true, if_false); | |
| 3351 } | |
| 3352 | |
| 3353 | |
| 3354 void FullCodeGenerator::EmitIsNonNegativeSmi(CallRuntime* expr) { | |
| 3355 ZoneList<Expression*>* args = expr->arguments(); | |
| 3356 DCHECK(args->length() == 1); | |
| 3357 | |
| 3358 VisitForAccumulatorValue(args->at(0)); | |
| 3359 | |
| 3360 Label materialize_true, materialize_false; | |
| 3361 Label* if_true = NULL; | |
| 3362 Label* if_false = NULL; | |
| 3363 Label* fall_through = NULL; | |
| 3364 context()->PrepareTest(&materialize_true, &materialize_false, | |
| 3365 &if_true, &if_false, &fall_through); | |
| 3366 | |
| 3367 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 3368 __ NonNegativeSmiTst(v0, at); | |
| 3369 Split(eq, at, Operand(zero_reg), if_true, if_false, fall_through); | |
| 3370 | |
| 3371 context()->Plug(if_true, if_false); | |
| 3372 } | |
| 3373 | |
| 3374 | |
| 3375 void FullCodeGenerator::EmitIsObject(CallRuntime* expr) { | |
| 3376 ZoneList<Expression*>* args = expr->arguments(); | |
| 3377 DCHECK(args->length() == 1); | |
| 3378 | |
| 3379 VisitForAccumulatorValue(args->at(0)); | |
| 3380 | |
| 3381 Label materialize_true, materialize_false; | |
| 3382 Label* if_true = NULL; | |
| 3383 Label* if_false = NULL; | |
| 3384 Label* fall_through = NULL; | |
| 3385 context()->PrepareTest(&materialize_true, &materialize_false, | |
| 3386 &if_true, &if_false, &fall_through); | |
| 3387 | |
| 3388 __ JumpIfSmi(v0, if_false); | |
| 3389 __ LoadRoot(at, Heap::kNullValueRootIndex); | |
| 3390 __ Branch(if_true, eq, v0, Operand(at)); | |
| 3391 __ ld(a2, FieldMemOperand(v0, HeapObject::kMapOffset)); | |
| 3392 // Undetectable objects behave like undefined when tested with typeof. | |
| 3393 __ lbu(a1, FieldMemOperand(a2, Map::kBitFieldOffset)); | |
| 3394 __ And(at, a1, Operand(1 << Map::kIsUndetectable)); | |
| 3395 __ Branch(if_false, ne, at, Operand(zero_reg)); | |
| 3396 __ lbu(a1, FieldMemOperand(a2, Map::kInstanceTypeOffset)); | |
| 3397 __ Branch(if_false, lt, a1, Operand(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); | |
| 3398 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 3399 Split(le, a1, Operand(LAST_NONCALLABLE_SPEC_OBJECT_TYPE), | |
| 3400 if_true, if_false, fall_through); | |
| 3401 | |
| 3402 context()->Plug(if_true, if_false); | |
| 3403 } | |
| 3404 | |
| 3405 | |
| 3406 void FullCodeGenerator::EmitIsSpecObject(CallRuntime* expr) { | |
| 3407 ZoneList<Expression*>* args = expr->arguments(); | |
| 3408 DCHECK(args->length() == 1); | |
| 3409 | |
| 3410 VisitForAccumulatorValue(args->at(0)); | |
| 3411 | |
| 3412 Label materialize_true, materialize_false; | |
| 3413 Label* if_true = NULL; | |
| 3414 Label* if_false = NULL; | |
| 3415 Label* fall_through = NULL; | |
| 3416 context()->PrepareTest(&materialize_true, &materialize_false, | |
| 3417 &if_true, &if_false, &fall_through); | |
| 3418 | |
| 3419 __ JumpIfSmi(v0, if_false); | |
| 3420 __ GetObjectType(v0, a1, a1); | |
| 3421 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 3422 Split(ge, a1, Operand(FIRST_SPEC_OBJECT_TYPE), | |
| 3423 if_true, if_false, fall_through); | |
| 3424 | |
| 3425 context()->Plug(if_true, if_false); | |
| 3426 } | |
| 3427 | |
| 3428 | |
| 3429 void FullCodeGenerator::EmitIsUndetectableObject(CallRuntime* expr) { | |
| 3430 ZoneList<Expression*>* args = expr->arguments(); | |
| 3431 DCHECK(args->length() == 1); | |
| 3432 | |
| 3433 VisitForAccumulatorValue(args->at(0)); | |
| 3434 | |
| 3435 Label materialize_true, materialize_false; | |
| 3436 Label* if_true = NULL; | |
| 3437 Label* if_false = NULL; | |
| 3438 Label* fall_through = NULL; | |
| 3439 context()->PrepareTest(&materialize_true, &materialize_false, | |
| 3440 &if_true, &if_false, &fall_through); | |
| 3441 | |
| 3442 __ JumpIfSmi(v0, if_false); | |
| 3443 __ ld(a1, FieldMemOperand(v0, HeapObject::kMapOffset)); | |
| 3444 __ lbu(a1, FieldMemOperand(a1, Map::kBitFieldOffset)); | |
| 3445 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 3446 __ And(at, a1, Operand(1 << Map::kIsUndetectable)); | |
| 3447 Split(ne, at, Operand(zero_reg), if_true, if_false, fall_through); | |
| 3448 | |
| 3449 context()->Plug(if_true, if_false); | |
| 3450 } | |
| 3451 | |
| 3452 | |
| 3453 void FullCodeGenerator::EmitIsStringWrapperSafeForDefaultValueOf( | |
| 3454 CallRuntime* expr) { | |
| 3455 ZoneList<Expression*>* args = expr->arguments(); | |
| 3456 DCHECK(args->length() == 1); | |
| 3457 | |
| 3458 VisitForAccumulatorValue(args->at(0)); | |
| 3459 | |
| 3460 Label materialize_true, materialize_false, skip_lookup; | |
| 3461 Label* if_true = NULL; | |
| 3462 Label* if_false = NULL; | |
| 3463 Label* fall_through = NULL; | |
| 3464 context()->PrepareTest(&materialize_true, &materialize_false, | |
| 3465 &if_true, &if_false, &fall_through); | |
| 3466 | |
| 3467 __ AssertNotSmi(v0); | |
| 3468 | |
| 3469 __ ld(a1, FieldMemOperand(v0, HeapObject::kMapOffset)); | |
| 3470 __ lbu(a4, FieldMemOperand(a1, Map::kBitField2Offset)); | |
| 3471 __ And(a4, a4, 1 << Map::kStringWrapperSafeForDefaultValueOf); | |
| 3472 __ Branch(&skip_lookup, ne, a4, Operand(zero_reg)); | |
| 3473 | |
| 3474 // Check for fast case object. Generate false result for slow case object. | |
| 3475 __ ld(a2, FieldMemOperand(v0, JSObject::kPropertiesOffset)); | |
| 3476 __ ld(a2, FieldMemOperand(a2, HeapObject::kMapOffset)); | |
| 3477 __ LoadRoot(a4, Heap::kHashTableMapRootIndex); | |
| 3478 __ Branch(if_false, eq, a2, Operand(a4)); | |
| 3479 | |
| 3480 // Look for valueOf name in the descriptor array, and indicate false if | |
| 3481 // found. Since we omit an enumeration index check, if it is added via a | |
| 3482 // transition that shares its descriptor array, this is a false positive. | |
| 3483 Label entry, loop, done; | |
| 3484 | |
| 3485 // Skip loop if no descriptors are valid. | |
| 3486 __ NumberOfOwnDescriptors(a3, a1); | |
| 3487 __ Branch(&done, eq, a3, Operand(zero_reg)); | |
| 3488 | |
| 3489 __ LoadInstanceDescriptors(a1, a4); | |
| 3490 // a4: descriptor array. | |
| 3491 // a3: valid entries in the descriptor array. | |
| 3492 STATIC_ASSERT(kSmiTag == 0); | |
| 3493 STATIC_ASSERT(kSmiTagSize == 1); | |
| 3494 // Does not need? | |
| 3495 // STATIC_ASSERT(kPointerSize == 4); | |
| 3496 __ li(at, Operand(DescriptorArray::kDescriptorSize)); | |
| 3497 __ Dmul(a3, a3, at); | |
| 3498 // Calculate location of the first key name. | |
| 3499 __ Daddu(a4, a4, Operand(DescriptorArray::kFirstOffset - kHeapObjectTag)); | |
| 3500 // Calculate the end of the descriptor array. | |
| 3501 __ mov(a2, a4); | |
| 3502 __ dsll(a5, a3, kPointerSizeLog2); | |
| 3503 __ Daddu(a2, a2, a5); | |
| 3504 | |
| 3505 // Loop through all the keys in the descriptor array. If one of these is the | |
| 3506 // string "valueOf" the result is false. | |
| 3507 // The use of a6 to store the valueOf string assumes that it is not otherwise | |
| 3508 // used in the loop below. | |
| 3509 __ li(a6, Operand(isolate()->factory()->value_of_string())); | |
| 3510 __ jmp(&entry); | |
| 3511 __ bind(&loop); | |
| 3512 __ ld(a3, MemOperand(a4, 0)); | |
| 3513 __ Branch(if_false, eq, a3, Operand(a6)); | |
| 3514 __ Daddu(a4, a4, Operand(DescriptorArray::kDescriptorSize * kPointerSize)); | |
| 3515 __ bind(&entry); | |
| 3516 __ Branch(&loop, ne, a4, Operand(a2)); | |
| 3517 | |
| 3518 __ bind(&done); | |
| 3519 | |
| 3520 // Set the bit in the map to indicate that there is no local valueOf field. | |
| 3521 __ lbu(a2, FieldMemOperand(a1, Map::kBitField2Offset)); | |
| 3522 __ Or(a2, a2, Operand(1 << Map::kStringWrapperSafeForDefaultValueOf)); | |
| 3523 __ sb(a2, FieldMemOperand(a1, Map::kBitField2Offset)); | |
| 3524 | |
| 3525 __ bind(&skip_lookup); | |
| 3526 | |
| 3527 // If a valueOf property is not found on the object check that its | |
| 3528 // prototype is the un-modified String prototype. If not result is false. | |
| 3529 __ ld(a2, FieldMemOperand(a1, Map::kPrototypeOffset)); | |
| 3530 __ JumpIfSmi(a2, if_false); | |
| 3531 __ ld(a2, FieldMemOperand(a2, HeapObject::kMapOffset)); | |
| 3532 __ ld(a3, ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX)); | |
| 3533 __ ld(a3, FieldMemOperand(a3, GlobalObject::kNativeContextOffset)); | |
| 3534 __ ld(a3, ContextOperand(a3, Context::STRING_FUNCTION_PROTOTYPE_MAP_INDEX)); | |
| 3535 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 3536 Split(eq, a2, Operand(a3), if_true, if_false, fall_through); | |
| 3537 | |
| 3538 context()->Plug(if_true, if_false); | |
| 3539 } | |
| 3540 | |
| 3541 | |
| 3542 void FullCodeGenerator::EmitIsFunction(CallRuntime* expr) { | |
| 3543 ZoneList<Expression*>* args = expr->arguments(); | |
| 3544 DCHECK(args->length() == 1); | |
| 3545 | |
| 3546 VisitForAccumulatorValue(args->at(0)); | |
| 3547 | |
| 3548 Label materialize_true, materialize_false; | |
| 3549 Label* if_true = NULL; | |
| 3550 Label* if_false = NULL; | |
| 3551 Label* fall_through = NULL; | |
| 3552 context()->PrepareTest(&materialize_true, &materialize_false, | |
| 3553 &if_true, &if_false, &fall_through); | |
| 3554 | |
| 3555 __ JumpIfSmi(v0, if_false); | |
| 3556 __ GetObjectType(v0, a1, a2); | |
| 3557 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 3558 __ Branch(if_true, eq, a2, Operand(JS_FUNCTION_TYPE)); | |
| 3559 __ Branch(if_false); | |
| 3560 | |
| 3561 context()->Plug(if_true, if_false); | |
| 3562 } | |
| 3563 | |
| 3564 | |
| 3565 void FullCodeGenerator::EmitIsMinusZero(CallRuntime* expr) { | |
| 3566 ZoneList<Expression*>* args = expr->arguments(); | |
| 3567 DCHECK(args->length() == 1); | |
| 3568 | |
| 3569 VisitForAccumulatorValue(args->at(0)); | |
| 3570 | |
| 3571 Label materialize_true, materialize_false; | |
| 3572 Label* if_true = NULL; | |
| 3573 Label* if_false = NULL; | |
| 3574 Label* fall_through = NULL; | |
| 3575 context()->PrepareTest(&materialize_true, &materialize_false, | |
| 3576 &if_true, &if_false, &fall_through); | |
| 3577 | |
| 3578 __ CheckMap(v0, a1, Heap::kHeapNumberMapRootIndex, if_false, DO_SMI_CHECK); | |
| 3579 __ lwu(a2, FieldMemOperand(v0, HeapNumber::kExponentOffset)); | |
| 3580 __ lwu(a1, FieldMemOperand(v0, HeapNumber::kMantissaOffset)); | |
| 3581 __ li(a4, 0x80000000); | |
| 3582 Label not_nan; | |
| 3583 __ Branch(¬_nan, ne, a2, Operand(a4)); | |
| 3584 __ mov(a4, zero_reg); | |
| 3585 __ mov(a2, a1); | |
| 3586 __ bind(¬_nan); | |
| 3587 | |
| 3588 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 3589 Split(eq, a2, Operand(a4), if_true, if_false, fall_through); | |
| 3590 | |
| 3591 context()->Plug(if_true, if_false); | |
| 3592 } | |
| 3593 | |
| 3594 | |
| 3595 void FullCodeGenerator::EmitIsArray(CallRuntime* expr) { | |
| 3596 ZoneList<Expression*>* args = expr->arguments(); | |
| 3597 DCHECK(args->length() == 1); | |
| 3598 | |
| 3599 VisitForAccumulatorValue(args->at(0)); | |
| 3600 | |
| 3601 Label materialize_true, materialize_false; | |
| 3602 Label* if_true = NULL; | |
| 3603 Label* if_false = NULL; | |
| 3604 Label* fall_through = NULL; | |
| 3605 context()->PrepareTest(&materialize_true, &materialize_false, | |
| 3606 &if_true, &if_false, &fall_through); | |
| 3607 | |
| 3608 __ JumpIfSmi(v0, if_false); | |
| 3609 __ GetObjectType(v0, a1, a1); | |
| 3610 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 3611 Split(eq, a1, Operand(JS_ARRAY_TYPE), | |
| 3612 if_true, if_false, fall_through); | |
| 3613 | |
| 3614 context()->Plug(if_true, if_false); | |
| 3615 } | |
| 3616 | |
| 3617 | |
| 3618 void FullCodeGenerator::EmitIsTypedArray(CallRuntime* expr) { | |
| 3619 ZoneList<Expression*>* args = expr->arguments(); | |
| 3620 DCHECK(args->length() == 1); | |
| 3621 | |
| 3622 VisitForAccumulatorValue(args->at(0)); | |
| 3623 | |
| 3624 Label materialize_true, materialize_false; | |
| 3625 Label* if_true = NULL; | |
| 3626 Label* if_false = NULL; | |
| 3627 Label* fall_through = NULL; | |
| 3628 context()->PrepareTest(&materialize_true, &materialize_false, &if_true, | |
| 3629 &if_false, &fall_through); | |
| 3630 | |
| 3631 __ JumpIfSmi(v0, if_false); | |
| 3632 __ GetObjectType(v0, a1, a1); | |
| 3633 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 3634 Split(eq, a1, Operand(JS_TYPED_ARRAY_TYPE), if_true, if_false, fall_through); | |
| 3635 | |
| 3636 context()->Plug(if_true, if_false); | |
| 3637 } | |
| 3638 | |
| 3639 | |
| 3640 void FullCodeGenerator::EmitIsRegExp(CallRuntime* expr) { | |
| 3641 ZoneList<Expression*>* args = expr->arguments(); | |
| 3642 DCHECK(args->length() == 1); | |
| 3643 | |
| 3644 VisitForAccumulatorValue(args->at(0)); | |
| 3645 | |
| 3646 Label materialize_true, materialize_false; | |
| 3647 Label* if_true = NULL; | |
| 3648 Label* if_false = NULL; | |
| 3649 Label* fall_through = NULL; | |
| 3650 context()->PrepareTest(&materialize_true, &materialize_false, | |
| 3651 &if_true, &if_false, &fall_through); | |
| 3652 | |
| 3653 __ JumpIfSmi(v0, if_false); | |
| 3654 __ GetObjectType(v0, a1, a1); | |
| 3655 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 3656 Split(eq, a1, Operand(JS_REGEXP_TYPE), if_true, if_false, fall_through); | |
| 3657 | |
| 3658 context()->Plug(if_true, if_false); | |
| 3659 } | |
| 3660 | |
| 3661 | |
| 3662 void FullCodeGenerator::EmitIsJSProxy(CallRuntime* expr) { | |
| 3663 ZoneList<Expression*>* args = expr->arguments(); | |
| 3664 DCHECK(args->length() == 1); | |
| 3665 | |
| 3666 VisitForAccumulatorValue(args->at(0)); | |
| 3667 | |
| 3668 Label materialize_true, materialize_false; | |
| 3669 Label* if_true = NULL; | |
| 3670 Label* if_false = NULL; | |
| 3671 Label* fall_through = NULL; | |
| 3672 context()->PrepareTest(&materialize_true, &materialize_false, &if_true, | |
| 3673 &if_false, &fall_through); | |
| 3674 | |
| 3675 __ JumpIfSmi(v0, if_false); | |
| 3676 Register map = a1; | |
| 3677 Register type_reg = a2; | |
| 3678 __ GetObjectType(v0, map, type_reg); | |
| 3679 __ Subu(type_reg, type_reg, Operand(FIRST_JS_PROXY_TYPE)); | |
| 3680 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 3681 Split(ls, type_reg, Operand(LAST_JS_PROXY_TYPE - FIRST_JS_PROXY_TYPE), | |
| 3682 if_true, if_false, fall_through); | |
| 3683 | |
| 3684 context()->Plug(if_true, if_false); | |
| 3685 } | |
| 3686 | |
| 3687 | |
| 3688 void FullCodeGenerator::EmitIsConstructCall(CallRuntime* expr) { | |
| 3689 DCHECK(expr->arguments()->length() == 0); | |
| 3690 | |
| 3691 Label materialize_true, materialize_false; | |
| 3692 Label* if_true = NULL; | |
| 3693 Label* if_false = NULL; | |
| 3694 Label* fall_through = NULL; | |
| 3695 context()->PrepareTest(&materialize_true, &materialize_false, | |
| 3696 &if_true, &if_false, &fall_through); | |
| 3697 | |
| 3698 // Get the frame pointer for the calling frame. | |
| 3699 __ ld(a2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); | |
| 3700 | |
| 3701 // Skip the arguments adaptor frame if it exists. | |
| 3702 Label check_frame_marker; | |
| 3703 __ ld(a1, MemOperand(a2, StandardFrameConstants::kContextOffset)); | |
| 3704 __ Branch(&check_frame_marker, ne, | |
| 3705 a1, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); | |
| 3706 __ ld(a2, MemOperand(a2, StandardFrameConstants::kCallerFPOffset)); | |
| 3707 | |
| 3708 // Check the marker in the calling frame. | |
| 3709 __ bind(&check_frame_marker); | |
| 3710 __ ld(a1, MemOperand(a2, StandardFrameConstants::kMarkerOffset)); | |
| 3711 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 3712 Split(eq, a1, Operand(Smi::FromInt(StackFrame::CONSTRUCT)), | |
| 3713 if_true, if_false, fall_through); | |
| 3714 | |
| 3715 context()->Plug(if_true, if_false); | |
| 3716 } | |
| 3717 | |
| 3718 | |
| 3719 void FullCodeGenerator::EmitObjectEquals(CallRuntime* expr) { | |
| 3720 ZoneList<Expression*>* args = expr->arguments(); | |
| 3721 DCHECK(args->length() == 2); | |
| 3722 | |
| 3723 // Load the two objects into registers and perform the comparison. | |
| 3724 VisitForStackValue(args->at(0)); | |
| 3725 VisitForAccumulatorValue(args->at(1)); | |
| 3726 | |
| 3727 Label materialize_true, materialize_false; | |
| 3728 Label* if_true = NULL; | |
| 3729 Label* if_false = NULL; | |
| 3730 Label* fall_through = NULL; | |
| 3731 context()->PrepareTest(&materialize_true, &materialize_false, | |
| 3732 &if_true, &if_false, &fall_through); | |
| 3733 | |
| 3734 __ pop(a1); | |
| 3735 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 3736 Split(eq, v0, Operand(a1), if_true, if_false, fall_through); | |
| 3737 | |
| 3738 context()->Plug(if_true, if_false); | |
| 3739 } | |
| 3740 | |
| 3741 | |
| 3742 void FullCodeGenerator::EmitArguments(CallRuntime* expr) { | |
| 3743 ZoneList<Expression*>* args = expr->arguments(); | |
| 3744 DCHECK(args->length() == 1); | |
| 3745 | |
| 3746 // ArgumentsAccessStub expects the key in a1 and the formal | |
| 3747 // parameter count in a0. | |
| 3748 VisitForAccumulatorValue(args->at(0)); | |
| 3749 __ mov(a1, v0); | |
| 3750 __ li(a0, Operand(Smi::FromInt(info_->scope()->num_parameters()))); | |
| 3751 ArgumentsAccessStub stub(isolate(), ArgumentsAccessStub::READ_ELEMENT); | |
| 3752 __ CallStub(&stub); | |
| 3753 context()->Plug(v0); | |
| 3754 } | |
| 3755 | |
| 3756 | |
| 3757 void FullCodeGenerator::EmitArgumentsLength(CallRuntime* expr) { | |
| 3758 DCHECK(expr->arguments()->length() == 0); | |
| 3759 Label exit; | |
| 3760 // Get the number of formal parameters. | |
| 3761 __ li(v0, Operand(Smi::FromInt(info_->scope()->num_parameters()))); | |
| 3762 | |
| 3763 // Check if the calling frame is an arguments adaptor frame. | |
| 3764 __ ld(a2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); | |
| 3765 __ ld(a3, MemOperand(a2, StandardFrameConstants::kContextOffset)); | |
| 3766 __ Branch(&exit, ne, a3, | |
| 3767 Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); | |
| 3768 | |
| 3769 // Arguments adaptor case: Read the arguments length from the | |
| 3770 // adaptor frame. | |
| 3771 __ ld(v0, MemOperand(a2, ArgumentsAdaptorFrameConstants::kLengthOffset)); | |
| 3772 | |
| 3773 __ bind(&exit); | |
| 3774 context()->Plug(v0); | |
| 3775 } | |
| 3776 | |
| 3777 | |
| 3778 void FullCodeGenerator::EmitClassOf(CallRuntime* expr) { | |
| 3779 ZoneList<Expression*>* args = expr->arguments(); | |
| 3780 DCHECK(args->length() == 1); | |
| 3781 Label done, null, function, non_function_constructor; | |
| 3782 | |
| 3783 VisitForAccumulatorValue(args->at(0)); | |
| 3784 | |
| 3785 // If the object is a smi, we return null. | |
| 3786 __ JumpIfSmi(v0, &null); | |
| 3787 | |
| 3788 // Check that the object is a JS object but take special care of JS | |
| 3789 // functions to make sure they have 'Function' as their class. | |
| 3790 // Assume that there are only two callable types, and one of them is at | |
| 3791 // either end of the type range for JS object types. Saves extra comparisons. | |
| 3792 STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); | |
| 3793 __ GetObjectType(v0, v0, a1); // Map is now in v0. | |
| 3794 __ Branch(&null, lt, a1, Operand(FIRST_SPEC_OBJECT_TYPE)); | |
| 3795 | |
| 3796 STATIC_ASSERT(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE == | |
| 3797 FIRST_SPEC_OBJECT_TYPE + 1); | |
| 3798 __ Branch(&function, eq, a1, Operand(FIRST_SPEC_OBJECT_TYPE)); | |
| 3799 | |
| 3800 STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == | |
| 3801 LAST_SPEC_OBJECT_TYPE - 1); | |
| 3802 __ Branch(&function, eq, a1, Operand(LAST_SPEC_OBJECT_TYPE)); | |
| 3803 // Assume that there is no larger type. | |
| 3804 STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == LAST_TYPE - 1); | |
| 3805 | |
| 3806 // Check if the constructor in the map is a JS function. | |
| 3807 Register instance_type = a2; | |
| 3808 __ GetMapConstructor(v0, v0, a1, instance_type); | |
| 3809 __ Branch(&non_function_constructor, ne, instance_type, | |
| 3810 Operand(JS_FUNCTION_TYPE)); | |
| 3811 | |
| 3812 // v0 now contains the constructor function. Grab the | |
| 3813 // instance class name from there. | |
| 3814 __ ld(v0, FieldMemOperand(v0, JSFunction::kSharedFunctionInfoOffset)); | |
| 3815 __ ld(v0, FieldMemOperand(v0, SharedFunctionInfo::kInstanceClassNameOffset)); | |
| 3816 __ Branch(&done); | |
| 3817 | |
| 3818 // Functions have class 'Function'. | |
| 3819 __ bind(&function); | |
| 3820 __ LoadRoot(v0, Heap::kFunction_stringRootIndex); | |
| 3821 __ jmp(&done); | |
| 3822 | |
| 3823 // Objects with a non-function constructor have class 'Object'. | |
| 3824 __ bind(&non_function_constructor); | |
| 3825 __ LoadRoot(v0, Heap::kObject_stringRootIndex); | |
| 3826 __ jmp(&done); | |
| 3827 | |
| 3828 // Non-JS objects have class null. | |
| 3829 __ bind(&null); | |
| 3830 __ LoadRoot(v0, Heap::kNullValueRootIndex); | |
| 3831 | |
| 3832 // All done. | |
| 3833 __ bind(&done); | |
| 3834 | |
| 3835 context()->Plug(v0); | |
| 3836 } | |
| 3837 | |
| 3838 | |
| 3839 void FullCodeGenerator::EmitValueOf(CallRuntime* expr) { | |
| 3840 ZoneList<Expression*>* args = expr->arguments(); | |
| 3841 DCHECK(args->length() == 1); | |
| 3842 | |
| 3843 VisitForAccumulatorValue(args->at(0)); // Load the object. | |
| 3844 | |
| 3845 Label done; | |
| 3846 // If the object is a smi return the object. | |
| 3847 __ JumpIfSmi(v0, &done); | |
| 3848 // If the object is not a value type, return the object. | |
| 3849 __ GetObjectType(v0, a1, a1); | |
| 3850 __ Branch(&done, ne, a1, Operand(JS_VALUE_TYPE)); | |
| 3851 | |
| 3852 __ ld(v0, FieldMemOperand(v0, JSValue::kValueOffset)); | |
| 3853 | |
| 3854 __ bind(&done); | |
| 3855 context()->Plug(v0); | |
| 3856 } | |
| 3857 | |
| 3858 | |
| 3859 void FullCodeGenerator::EmitIsDate(CallRuntime* expr) { | |
| 3860 ZoneList<Expression*>* args = expr->arguments(); | |
| 3861 DCHECK_EQ(1, args->length()); | |
| 3862 | |
| 3863 VisitForAccumulatorValue(args->at(0)); | |
| 3864 | |
| 3865 Label materialize_true, materialize_false; | |
| 3866 Label* if_true = nullptr; | |
| 3867 Label* if_false = nullptr; | |
| 3868 Label* fall_through = nullptr; | |
| 3869 context()->PrepareTest(&materialize_true, &materialize_false, &if_true, | |
| 3870 &if_false, &fall_through); | |
| 3871 | |
| 3872 __ JumpIfSmi(v0, if_false); | |
| 3873 __ GetObjectType(v0, a1, a1); | |
| 3874 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 3875 Split(eq, a1, Operand(JS_DATE_TYPE), if_true, if_false, fall_through); | |
| 3876 | |
| 3877 context()->Plug(if_true, if_false); | |
| 3878 } | |
| 3879 | |
| 3880 | |
| 3881 void FullCodeGenerator::EmitDateField(CallRuntime* expr) { | |
| 3882 ZoneList<Expression*>* args = expr->arguments(); | |
| 3883 DCHECK(args->length() == 2); | |
| 3884 DCHECK_NOT_NULL(args->at(1)->AsLiteral()); | |
| 3885 Smi* index = Smi::cast(*(args->at(1)->AsLiteral()->value())); | |
| 3886 | |
| 3887 VisitForAccumulatorValue(args->at(0)); // Load the object. | |
| 3888 | |
| 3889 Register object = v0; | |
| 3890 Register result = v0; | |
| 3891 Register scratch0 = t1; | |
| 3892 Register scratch1 = a1; | |
| 3893 | |
| 3894 if (index->value() == 0) { | |
| 3895 __ ld(result, FieldMemOperand(object, JSDate::kValueOffset)); | |
| 3896 } else { | |
| 3897 Label runtime, done; | |
| 3898 if (index->value() < JSDate::kFirstUncachedField) { | |
| 3899 ExternalReference stamp = ExternalReference::date_cache_stamp(isolate()); | |
| 3900 __ li(scratch1, Operand(stamp)); | |
| 3901 __ ld(scratch1, MemOperand(scratch1)); | |
| 3902 __ ld(scratch0, FieldMemOperand(object, JSDate::kCacheStampOffset)); | |
| 3903 __ Branch(&runtime, ne, scratch1, Operand(scratch0)); | |
| 3904 __ ld(result, FieldMemOperand(object, JSDate::kValueOffset + | |
| 3905 kPointerSize * index->value())); | |
| 3906 __ jmp(&done); | |
| 3907 } | |
| 3908 __ bind(&runtime); | |
| 3909 __ PrepareCallCFunction(2, scratch1); | |
| 3910 __ li(a1, Operand(index)); | |
| 3911 __ Move(a0, object); | |
| 3912 __ CallCFunction(ExternalReference::get_date_field_function(isolate()), 2); | |
| 3913 __ bind(&done); | |
| 3914 } | |
| 3915 | |
| 3916 context()->Plug(result); | |
| 3917 } | |
| 3918 | |
| 3919 | |
| 3920 void FullCodeGenerator::EmitOneByteSeqStringSetChar(CallRuntime* expr) { | |
| 3921 ZoneList<Expression*>* args = expr->arguments(); | |
| 3922 DCHECK_EQ(3, args->length()); | |
| 3923 | |
| 3924 Register string = v0; | |
| 3925 Register index = a1; | |
| 3926 Register value = a2; | |
| 3927 | |
| 3928 VisitForStackValue(args->at(0)); // index | |
| 3929 VisitForStackValue(args->at(1)); // value | |
| 3930 VisitForAccumulatorValue(args->at(2)); // string | |
| 3931 __ Pop(index, value); | |
| 3932 | |
| 3933 if (FLAG_debug_code) { | |
| 3934 __ SmiTst(value, at); | |
| 3935 __ Check(eq, kNonSmiValue, at, Operand(zero_reg)); | |
| 3936 __ SmiTst(index, at); | |
| 3937 __ Check(eq, kNonSmiIndex, at, Operand(zero_reg)); | |
| 3938 __ SmiUntag(index, index); | |
| 3939 static const uint32_t one_byte_seq_type = kSeqStringTag | kOneByteStringTag; | |
| 3940 Register scratch = t1; | |
| 3941 __ EmitSeqStringSetCharCheck( | |
| 3942 string, index, value, scratch, one_byte_seq_type); | |
| 3943 __ SmiTag(index, index); | |
| 3944 } | |
| 3945 | |
| 3946 __ SmiUntag(value, value); | |
| 3947 __ Daddu(at, | |
| 3948 string, | |
| 3949 Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag)); | |
| 3950 __ SmiUntag(index); | |
| 3951 __ Daddu(at, at, index); | |
| 3952 __ sb(value, MemOperand(at)); | |
| 3953 context()->Plug(string); | |
| 3954 } | |
| 3955 | |
| 3956 | |
| 3957 void FullCodeGenerator::EmitTwoByteSeqStringSetChar(CallRuntime* expr) { | |
| 3958 ZoneList<Expression*>* args = expr->arguments(); | |
| 3959 DCHECK_EQ(3, args->length()); | |
| 3960 | |
| 3961 Register string = v0; | |
| 3962 Register index = a1; | |
| 3963 Register value = a2; | |
| 3964 | |
| 3965 VisitForStackValue(args->at(0)); // index | |
| 3966 VisitForStackValue(args->at(1)); // value | |
| 3967 VisitForAccumulatorValue(args->at(2)); // string | |
| 3968 __ Pop(index, value); | |
| 3969 | |
| 3970 if (FLAG_debug_code) { | |
| 3971 __ SmiTst(value, at); | |
| 3972 __ Check(eq, kNonSmiValue, at, Operand(zero_reg)); | |
| 3973 __ SmiTst(index, at); | |
| 3974 __ Check(eq, kNonSmiIndex, at, Operand(zero_reg)); | |
| 3975 __ SmiUntag(index, index); | |
| 3976 static const uint32_t two_byte_seq_type = kSeqStringTag | kTwoByteStringTag; | |
| 3977 Register scratch = t1; | |
| 3978 __ EmitSeqStringSetCharCheck( | |
| 3979 string, index, value, scratch, two_byte_seq_type); | |
| 3980 __ SmiTag(index, index); | |
| 3981 } | |
| 3982 | |
| 3983 __ SmiUntag(value, value); | |
| 3984 __ Daddu(at, | |
| 3985 string, | |
| 3986 Operand(SeqTwoByteString::kHeaderSize - kHeapObjectTag)); | |
| 3987 __ dsra(index, index, 32 - 1); | |
| 3988 __ Daddu(at, at, index); | |
| 3989 STATIC_ASSERT(kSmiTagSize == 1 && kSmiTag == 0); | |
| 3990 __ sh(value, MemOperand(at)); | |
| 3991 context()->Plug(string); | |
| 3992 } | |
| 3993 | |
| 3994 | |
| 3995 void FullCodeGenerator::EmitSetValueOf(CallRuntime* expr) { | |
| 3996 ZoneList<Expression*>* args = expr->arguments(); | |
| 3997 DCHECK(args->length() == 2); | |
| 3998 | |
| 3999 VisitForStackValue(args->at(0)); // Load the object. | |
| 4000 VisitForAccumulatorValue(args->at(1)); // Load the value. | |
| 4001 __ pop(a1); // v0 = value. a1 = object. | |
| 4002 | |
| 4003 Label done; | |
| 4004 // If the object is a smi, return the value. | |
| 4005 __ JumpIfSmi(a1, &done); | |
| 4006 | |
| 4007 // If the object is not a value type, return the value. | |
| 4008 __ GetObjectType(a1, a2, a2); | |
| 4009 __ Branch(&done, ne, a2, Operand(JS_VALUE_TYPE)); | |
| 4010 | |
| 4011 // Store the value. | |
| 4012 __ sd(v0, FieldMemOperand(a1, JSValue::kValueOffset)); | |
| 4013 // Update the write barrier. Save the value as it will be | |
| 4014 // overwritten by the write barrier code and is needed afterward. | |
| 4015 __ mov(a2, v0); | |
| 4016 __ RecordWriteField( | |
| 4017 a1, JSValue::kValueOffset, a2, a3, kRAHasBeenSaved, kDontSaveFPRegs); | |
| 4018 | |
| 4019 __ bind(&done); | |
| 4020 context()->Plug(v0); | |
| 4021 } | |
| 4022 | |
| 4023 | |
| 4024 void FullCodeGenerator::EmitNumberToString(CallRuntime* expr) { | |
| 4025 ZoneList<Expression*>* args = expr->arguments(); | |
| 4026 DCHECK_EQ(args->length(), 1); | |
| 4027 | |
| 4028 // Load the argument into a0 and call the stub. | |
| 4029 VisitForAccumulatorValue(args->at(0)); | |
| 4030 __ mov(a0, result_register()); | |
| 4031 | |
| 4032 NumberToStringStub stub(isolate()); | |
| 4033 __ CallStub(&stub); | |
| 4034 context()->Plug(v0); | |
| 4035 } | |
| 4036 | |
| 4037 | |
| 4038 void FullCodeGenerator::EmitStringCharFromCode(CallRuntime* expr) { | |
| 4039 ZoneList<Expression*>* args = expr->arguments(); | |
| 4040 DCHECK(args->length() == 1); | |
| 4041 | |
| 4042 VisitForAccumulatorValue(args->at(0)); | |
| 4043 | |
| 4044 Label done; | |
| 4045 StringCharFromCodeGenerator generator(v0, a1); | |
| 4046 generator.GenerateFast(masm_); | |
| 4047 __ jmp(&done); | |
| 4048 | |
| 4049 NopRuntimeCallHelper call_helper; | |
| 4050 generator.GenerateSlow(masm_, call_helper); | |
| 4051 | |
| 4052 __ bind(&done); | |
| 4053 context()->Plug(a1); | |
| 4054 } | |
| 4055 | |
| 4056 | |
| 4057 void FullCodeGenerator::EmitStringCharCodeAt(CallRuntime* expr) { | |
| 4058 ZoneList<Expression*>* args = expr->arguments(); | |
| 4059 DCHECK(args->length() == 2); | |
| 4060 | |
| 4061 VisitForStackValue(args->at(0)); | |
| 4062 VisitForAccumulatorValue(args->at(1)); | |
| 4063 __ mov(a0, result_register()); | |
| 4064 | |
| 4065 Register object = a1; | |
| 4066 Register index = a0; | |
| 4067 Register result = v0; | |
| 4068 | |
| 4069 __ pop(object); | |
| 4070 | |
| 4071 Label need_conversion; | |
| 4072 Label index_out_of_range; | |
| 4073 Label done; | |
| 4074 StringCharCodeAtGenerator generator(object, | |
| 4075 index, | |
| 4076 result, | |
| 4077 &need_conversion, | |
| 4078 &need_conversion, | |
| 4079 &index_out_of_range, | |
| 4080 STRING_INDEX_IS_NUMBER); | |
| 4081 generator.GenerateFast(masm_); | |
| 4082 __ jmp(&done); | |
| 4083 | |
| 4084 __ bind(&index_out_of_range); | |
| 4085 // When the index is out of range, the spec requires us to return | |
| 4086 // NaN. | |
| 4087 __ LoadRoot(result, Heap::kNanValueRootIndex); | |
| 4088 __ jmp(&done); | |
| 4089 | |
| 4090 __ bind(&need_conversion); | |
| 4091 // Load the undefined value into the result register, which will | |
| 4092 // trigger conversion. | |
| 4093 __ LoadRoot(result, Heap::kUndefinedValueRootIndex); | |
| 4094 __ jmp(&done); | |
| 4095 | |
| 4096 NopRuntimeCallHelper call_helper; | |
| 4097 generator.GenerateSlow(masm_, NOT_PART_OF_IC_HANDLER, call_helper); | |
| 4098 | |
| 4099 __ bind(&done); | |
| 4100 context()->Plug(result); | |
| 4101 } | |
| 4102 | |
| 4103 | |
| 4104 void FullCodeGenerator::EmitStringCharAt(CallRuntime* expr) { | |
| 4105 ZoneList<Expression*>* args = expr->arguments(); | |
| 4106 DCHECK(args->length() == 2); | |
| 4107 | |
| 4108 VisitForStackValue(args->at(0)); | |
| 4109 VisitForAccumulatorValue(args->at(1)); | |
| 4110 __ mov(a0, result_register()); | |
| 4111 | |
| 4112 Register object = a1; | |
| 4113 Register index = a0; | |
| 4114 Register scratch = a3; | |
| 4115 Register result = v0; | |
| 4116 | |
| 4117 __ pop(object); | |
| 4118 | |
| 4119 Label need_conversion; | |
| 4120 Label index_out_of_range; | |
| 4121 Label done; | |
| 4122 StringCharAtGenerator generator(object, | |
| 4123 index, | |
| 4124 scratch, | |
| 4125 result, | |
| 4126 &need_conversion, | |
| 4127 &need_conversion, | |
| 4128 &index_out_of_range, | |
| 4129 STRING_INDEX_IS_NUMBER); | |
| 4130 generator.GenerateFast(masm_); | |
| 4131 __ jmp(&done); | |
| 4132 | |
| 4133 __ bind(&index_out_of_range); | |
| 4134 // When the index is out of range, the spec requires us to return | |
| 4135 // the empty string. | |
| 4136 __ LoadRoot(result, Heap::kempty_stringRootIndex); | |
| 4137 __ jmp(&done); | |
| 4138 | |
| 4139 __ bind(&need_conversion); | |
| 4140 // Move smi zero into the result register, which will trigger | |
| 4141 // conversion. | |
| 4142 __ li(result, Operand(Smi::FromInt(0))); | |
| 4143 __ jmp(&done); | |
| 4144 | |
| 4145 NopRuntimeCallHelper call_helper; | |
| 4146 generator.GenerateSlow(masm_, NOT_PART_OF_IC_HANDLER, call_helper); | |
| 4147 | |
| 4148 __ bind(&done); | |
| 4149 context()->Plug(result); | |
| 4150 } | |
| 4151 | |
| 4152 | |
| 4153 void FullCodeGenerator::EmitStringAdd(CallRuntime* expr) { | |
| 4154 ZoneList<Expression*>* args = expr->arguments(); | |
| 4155 DCHECK_EQ(2, args->length()); | |
| 4156 VisitForStackValue(args->at(0)); | |
| 4157 VisitForAccumulatorValue(args->at(1)); | |
| 4158 | |
| 4159 __ pop(a1); | |
| 4160 __ mov(a0, result_register()); // StringAddStub requires args in a0, a1. | |
| 4161 StringAddStub stub(isolate(), STRING_ADD_CHECK_BOTH, NOT_TENURED); | |
| 4162 __ CallStub(&stub); | |
| 4163 context()->Plug(v0); | |
| 4164 } | |
| 4165 | |
| 4166 | |
| 4167 void FullCodeGenerator::EmitCallFunction(CallRuntime* expr) { | |
| 4168 ZoneList<Expression*>* args = expr->arguments(); | |
| 4169 DCHECK(args->length() >= 2); | |
| 4170 | |
| 4171 int arg_count = args->length() - 2; // 2 ~ receiver and function. | |
| 4172 for (int i = 0; i < arg_count + 1; i++) { | |
| 4173 VisitForStackValue(args->at(i)); | |
| 4174 } | |
| 4175 VisitForAccumulatorValue(args->last()); // Function. | |
| 4176 | |
| 4177 Label runtime, done; | |
| 4178 // Check for non-function argument (including proxy). | |
| 4179 __ JumpIfSmi(v0, &runtime); | |
| 4180 __ GetObjectType(v0, a1, a1); | |
| 4181 __ Branch(&runtime, ne, a1, Operand(JS_FUNCTION_TYPE)); | |
| 4182 | |
| 4183 // InvokeFunction requires the function in a1. Move it in there. | |
| 4184 __ mov(a1, result_register()); | |
| 4185 ParameterCount count(arg_count); | |
| 4186 __ InvokeFunction(a1, count, CALL_FUNCTION, NullCallWrapper()); | |
| 4187 __ ld(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); | |
| 4188 __ jmp(&done); | |
| 4189 | |
| 4190 __ bind(&runtime); | |
| 4191 __ push(v0); | |
| 4192 __ CallRuntime(Runtime::kCall, args->length()); | |
| 4193 __ bind(&done); | |
| 4194 | |
| 4195 context()->Plug(v0); | |
| 4196 } | |
| 4197 | |
| 4198 | |
| 4199 void FullCodeGenerator::EmitDefaultConstructorCallSuper(CallRuntime* expr) { | |
| 4200 ZoneList<Expression*>* args = expr->arguments(); | |
| 4201 DCHECK(args->length() == 2); | |
| 4202 | |
| 4203 // new.target | |
| 4204 VisitForStackValue(args->at(0)); | |
| 4205 | |
| 4206 // .this_function | |
| 4207 VisitForStackValue(args->at(1)); | |
| 4208 __ CallRuntime(Runtime::kGetPrototype, 1); | |
| 4209 __ Push(result_register()); | |
| 4210 | |
| 4211 // Load original constructor into a4. | |
| 4212 __ ld(a4, MemOperand(sp, 1 * kPointerSize)); | |
| 4213 | |
| 4214 // Check if the calling frame is an arguments adaptor frame. | |
| 4215 Label adaptor_frame, args_set_up, runtime; | |
| 4216 __ ld(a2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); | |
| 4217 __ ld(a3, MemOperand(a2, StandardFrameConstants::kContextOffset)); | |
| 4218 __ Branch(&adaptor_frame, eq, a3, | |
| 4219 Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); | |
| 4220 // default constructor has no arguments, so no adaptor frame means no args. | |
| 4221 __ mov(a0, zero_reg); | |
| 4222 __ Branch(&args_set_up); | |
| 4223 | |
| 4224 // Copy arguments from adaptor frame. | |
| 4225 { | |
| 4226 __ bind(&adaptor_frame); | |
| 4227 __ ld(a1, MemOperand(a2, ArgumentsAdaptorFrameConstants::kLengthOffset)); | |
| 4228 __ SmiUntag(a1, a1); | |
| 4229 | |
| 4230 __ mov(a0, a1); | |
| 4231 | |
| 4232 // Get arguments pointer in a2. | |
| 4233 __ dsll(at, a1, kPointerSizeLog2); | |
| 4234 __ Daddu(a2, a2, Operand(at)); | |
| 4235 __ Daddu(a2, a2, Operand(StandardFrameConstants::kCallerSPOffset)); | |
| 4236 Label loop; | |
| 4237 __ bind(&loop); | |
| 4238 // Pre-decrement a2 with kPointerSize on each iteration. | |
| 4239 // Pre-decrement in order to skip receiver. | |
| 4240 __ Daddu(a2, a2, Operand(-kPointerSize)); | |
| 4241 __ ld(a3, MemOperand(a2)); | |
| 4242 __ Push(a3); | |
| 4243 __ Daddu(a1, a1, Operand(-1)); | |
| 4244 __ Branch(&loop, ne, a1, Operand(zero_reg)); | |
| 4245 } | |
| 4246 | |
| 4247 __ bind(&args_set_up); | |
| 4248 __ dsll(at, a0, kPointerSizeLog2); | |
| 4249 __ Daddu(at, at, Operand(sp)); | |
| 4250 __ ld(a1, MemOperand(at, 0)); | |
| 4251 __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); | |
| 4252 | |
| 4253 CallConstructStub stub(isolate(), SUPER_CONSTRUCTOR_CALL); | |
| 4254 __ Call(stub.GetCode(), RelocInfo::CONSTRUCT_CALL); | |
| 4255 | |
| 4256 __ Drop(1); | |
| 4257 | |
| 4258 context()->Plug(result_register()); | |
| 4259 } | |
| 4260 | |
| 4261 | |
| 4262 void FullCodeGenerator::EmitRegExpConstructResult(CallRuntime* expr) { | |
| 4263 RegExpConstructResultStub stub(isolate()); | |
| 4264 ZoneList<Expression*>* args = expr->arguments(); | |
| 4265 DCHECK(args->length() == 3); | |
| 4266 VisitForStackValue(args->at(0)); | |
| 4267 VisitForStackValue(args->at(1)); | |
| 4268 VisitForAccumulatorValue(args->at(2)); | |
| 4269 __ mov(a0, result_register()); | |
| 4270 __ pop(a1); | |
| 4271 __ pop(a2); | |
| 4272 __ CallStub(&stub); | |
| 4273 context()->Plug(v0); | |
| 4274 } | |
| 4275 | |
| 4276 | |
| 4277 void FullCodeGenerator::EmitGetFromCache(CallRuntime* expr) { | |
| 4278 ZoneList<Expression*>* args = expr->arguments(); | |
| 4279 DCHECK_EQ(2, args->length()); | |
| 4280 | |
| 4281 DCHECK_NOT_NULL(args->at(0)->AsLiteral()); | |
| 4282 int cache_id = Smi::cast(*(args->at(0)->AsLiteral()->value()))->value(); | |
| 4283 | |
| 4284 Handle<FixedArray> jsfunction_result_caches( | |
| 4285 isolate()->native_context()->jsfunction_result_caches()); | |
| 4286 if (jsfunction_result_caches->length() <= cache_id) { | |
| 4287 __ Abort(kAttemptToUseUndefinedCache); | |
| 4288 __ LoadRoot(v0, Heap::kUndefinedValueRootIndex); | |
| 4289 context()->Plug(v0); | |
| 4290 return; | |
| 4291 } | |
| 4292 | |
| 4293 VisitForAccumulatorValue(args->at(1)); | |
| 4294 | |
| 4295 Register key = v0; | |
| 4296 Register cache = a1; | |
| 4297 __ ld(cache, ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX)); | |
| 4298 __ ld(cache, FieldMemOperand(cache, GlobalObject::kNativeContextOffset)); | |
| 4299 __ ld(cache, | |
| 4300 ContextOperand( | |
| 4301 cache, Context::JSFUNCTION_RESULT_CACHES_INDEX)); | |
| 4302 __ ld(cache, | |
| 4303 FieldMemOperand(cache, FixedArray::OffsetOfElementAt(cache_id))); | |
| 4304 | |
| 4305 | |
| 4306 Label done, not_found; | |
| 4307 STATIC_ASSERT(kSmiTag == 0 && kSmiTagSize == 1); | |
| 4308 __ ld(a2, FieldMemOperand(cache, JSFunctionResultCache::kFingerOffset)); | |
| 4309 // a2 now holds finger offset as a smi. | |
| 4310 __ Daddu(a3, cache, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); | |
| 4311 // a3 now points to the start of fixed array elements. | |
| 4312 __ SmiScale(at, a2, kPointerSizeLog2); | |
| 4313 __ daddu(a3, a3, at); | |
| 4314 // a3 now points to key of indexed element of cache. | |
| 4315 __ ld(a2, MemOperand(a3)); | |
| 4316 __ Branch(¬_found, ne, key, Operand(a2)); | |
| 4317 | |
| 4318 __ ld(v0, MemOperand(a3, kPointerSize)); | |
| 4319 __ Branch(&done); | |
| 4320 | |
| 4321 __ bind(¬_found); | |
| 4322 // Call runtime to perform the lookup. | |
| 4323 __ Push(cache, key); | |
| 4324 __ CallRuntime(Runtime::kGetFromCacheRT, 2); | |
| 4325 | |
| 4326 __ bind(&done); | |
| 4327 context()->Plug(v0); | |
| 4328 } | |
| 4329 | |
| 4330 | |
| 4331 void FullCodeGenerator::EmitHasCachedArrayIndex(CallRuntime* expr) { | |
| 4332 ZoneList<Expression*>* args = expr->arguments(); | |
| 4333 VisitForAccumulatorValue(args->at(0)); | |
| 4334 | |
| 4335 Label materialize_true, materialize_false; | |
| 4336 Label* if_true = NULL; | |
| 4337 Label* if_false = NULL; | |
| 4338 Label* fall_through = NULL; | |
| 4339 context()->PrepareTest(&materialize_true, &materialize_false, | |
| 4340 &if_true, &if_false, &fall_through); | |
| 4341 | |
| 4342 __ lwu(a0, FieldMemOperand(v0, String::kHashFieldOffset)); | |
| 4343 __ And(a0, a0, Operand(String::kContainsCachedArrayIndexMask)); | |
| 4344 | |
| 4345 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 4346 Split(eq, a0, Operand(zero_reg), if_true, if_false, fall_through); | |
| 4347 | |
| 4348 context()->Plug(if_true, if_false); | |
| 4349 } | |
| 4350 | |
| 4351 | |
| 4352 void FullCodeGenerator::EmitGetCachedArrayIndex(CallRuntime* expr) { | |
| 4353 ZoneList<Expression*>* args = expr->arguments(); | |
| 4354 DCHECK(args->length() == 1); | |
| 4355 VisitForAccumulatorValue(args->at(0)); | |
| 4356 | |
| 4357 __ AssertString(v0); | |
| 4358 | |
| 4359 __ lwu(v0, FieldMemOperand(v0, String::kHashFieldOffset)); | |
| 4360 __ IndexFromHash(v0, v0); | |
| 4361 | |
| 4362 context()->Plug(v0); | |
| 4363 } | |
| 4364 | |
| 4365 | |
| 4366 void FullCodeGenerator::EmitFastOneByteArrayJoin(CallRuntime* expr) { | |
| 4367 Label bailout, done, one_char_separator, long_separator, | |
| 4368 non_trivial_array, not_size_one_array, loop, | |
| 4369 empty_separator_loop, one_char_separator_loop, | |
| 4370 one_char_separator_loop_entry, long_separator_loop; | |
| 4371 ZoneList<Expression*>* args = expr->arguments(); | |
| 4372 DCHECK(args->length() == 2); | |
| 4373 VisitForStackValue(args->at(1)); | |
| 4374 VisitForAccumulatorValue(args->at(0)); | |
| 4375 | |
| 4376 // All aliases of the same register have disjoint lifetimes. | |
| 4377 Register array = v0; | |
| 4378 Register elements = no_reg; // Will be v0. | |
| 4379 Register result = no_reg; // Will be v0. | |
| 4380 Register separator = a1; | |
| 4381 Register array_length = a2; | |
| 4382 Register result_pos = no_reg; // Will be a2. | |
| 4383 Register string_length = a3; | |
| 4384 Register string = a4; | |
| 4385 Register element = a5; | |
| 4386 Register elements_end = a6; | |
| 4387 Register scratch1 = a7; | |
| 4388 Register scratch2 = t1; | |
| 4389 Register scratch3 = t0; | |
| 4390 | |
| 4391 // Separator operand is on the stack. | |
| 4392 __ pop(separator); | |
| 4393 | |
| 4394 // Check that the array is a JSArray. | |
| 4395 __ JumpIfSmi(array, &bailout); | |
| 4396 __ GetObjectType(array, scratch1, scratch2); | |
| 4397 __ Branch(&bailout, ne, scratch2, Operand(JS_ARRAY_TYPE)); | |
| 4398 | |
| 4399 // Check that the array has fast elements. | |
| 4400 __ CheckFastElements(scratch1, scratch2, &bailout); | |
| 4401 | |
| 4402 // If the array has length zero, return the empty string. | |
| 4403 __ ld(array_length, FieldMemOperand(array, JSArray::kLengthOffset)); | |
| 4404 __ SmiUntag(array_length); | |
| 4405 __ Branch(&non_trivial_array, ne, array_length, Operand(zero_reg)); | |
| 4406 __ LoadRoot(v0, Heap::kempty_stringRootIndex); | |
| 4407 __ Branch(&done); | |
| 4408 | |
| 4409 __ bind(&non_trivial_array); | |
| 4410 | |
| 4411 // Get the FixedArray containing array's elements. | |
| 4412 elements = array; | |
| 4413 __ ld(elements, FieldMemOperand(array, JSArray::kElementsOffset)); | |
| 4414 array = no_reg; // End of array's live range. | |
| 4415 | |
| 4416 // Check that all array elements are sequential one-byte strings, and | |
| 4417 // accumulate the sum of their lengths, as a smi-encoded value. | |
| 4418 __ mov(string_length, zero_reg); | |
| 4419 __ Daddu(element, | |
| 4420 elements, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); | |
| 4421 __ dsll(elements_end, array_length, kPointerSizeLog2); | |
| 4422 __ Daddu(elements_end, element, elements_end); | |
| 4423 // Loop condition: while (element < elements_end). | |
| 4424 // Live values in registers: | |
| 4425 // elements: Fixed array of strings. | |
| 4426 // array_length: Length of the fixed array of strings (not smi) | |
| 4427 // separator: Separator string | |
| 4428 // string_length: Accumulated sum of string lengths (smi). | |
| 4429 // element: Current array element. | |
| 4430 // elements_end: Array end. | |
| 4431 if (generate_debug_code_) { | |
| 4432 __ Assert(gt, kNoEmptyArraysHereInEmitFastOneByteArrayJoin, array_length, | |
| 4433 Operand(zero_reg)); | |
| 4434 } | |
| 4435 __ bind(&loop); | |
| 4436 __ ld(string, MemOperand(element)); | |
| 4437 __ Daddu(element, element, kPointerSize); | |
| 4438 __ JumpIfSmi(string, &bailout); | |
| 4439 __ ld(scratch1, FieldMemOperand(string, HeapObject::kMapOffset)); | |
| 4440 __ lbu(scratch1, FieldMemOperand(scratch1, Map::kInstanceTypeOffset)); | |
| 4441 __ JumpIfInstanceTypeIsNotSequentialOneByte(scratch1, scratch2, &bailout); | |
| 4442 __ ld(scratch1, FieldMemOperand(string, SeqOneByteString::kLengthOffset)); | |
| 4443 __ DadduAndCheckForOverflow(string_length, string_length, scratch1, scratch3); | |
| 4444 __ BranchOnOverflow(&bailout, scratch3); | |
| 4445 __ Branch(&loop, lt, element, Operand(elements_end)); | |
| 4446 | |
| 4447 // If array_length is 1, return elements[0], a string. | |
| 4448 __ Branch(¬_size_one_array, ne, array_length, Operand(1)); | |
| 4449 __ ld(v0, FieldMemOperand(elements, FixedArray::kHeaderSize)); | |
| 4450 __ Branch(&done); | |
| 4451 | |
| 4452 __ bind(¬_size_one_array); | |
| 4453 | |
| 4454 // Live values in registers: | |
| 4455 // separator: Separator string | |
| 4456 // array_length: Length of the array. | |
| 4457 // string_length: Sum of string lengths (smi). | |
| 4458 // elements: FixedArray of strings. | |
| 4459 | |
| 4460 // Check that the separator is a flat one-byte string. | |
| 4461 __ JumpIfSmi(separator, &bailout); | |
| 4462 __ ld(scratch1, FieldMemOperand(separator, HeapObject::kMapOffset)); | |
| 4463 __ lbu(scratch1, FieldMemOperand(scratch1, Map::kInstanceTypeOffset)); | |
| 4464 __ JumpIfInstanceTypeIsNotSequentialOneByte(scratch1, scratch2, &bailout); | |
| 4465 | |
| 4466 // Add (separator length times array_length) - separator length to the | |
| 4467 // string_length to get the length of the result string. array_length is not | |
| 4468 // smi but the other values are, so the result is a smi. | |
| 4469 __ ld(scratch1, FieldMemOperand(separator, SeqOneByteString::kLengthOffset)); | |
| 4470 __ Dsubu(string_length, string_length, Operand(scratch1)); | |
| 4471 __ SmiUntag(scratch1); | |
| 4472 __ Dmul(scratch2, array_length, scratch1); | |
| 4473 // Check for smi overflow. No overflow if higher 33 bits of 64-bit result are | |
| 4474 // zero. | |
| 4475 __ dsra32(scratch1, scratch2, 0); | |
| 4476 __ Branch(&bailout, ne, scratch2, Operand(zero_reg)); | |
| 4477 __ SmiUntag(string_length); | |
| 4478 __ AdduAndCheckForOverflow(string_length, string_length, scratch2, scratch3); | |
| 4479 __ BranchOnOverflow(&bailout, scratch3); | |
| 4480 | |
| 4481 // Get first element in the array to free up the elements register to be used | |
| 4482 // for the result. | |
| 4483 __ Daddu(element, | |
| 4484 elements, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); | |
| 4485 result = elements; // End of live range for elements. | |
| 4486 elements = no_reg; | |
| 4487 // Live values in registers: | |
| 4488 // element: First array element | |
| 4489 // separator: Separator string | |
| 4490 // string_length: Length of result string (not smi) | |
| 4491 // array_length: Length of the array. | |
| 4492 __ AllocateOneByteString(result, string_length, scratch1, scratch2, | |
| 4493 elements_end, &bailout); | |
| 4494 // Prepare for looping. Set up elements_end to end of the array. Set | |
| 4495 // result_pos to the position of the result where to write the first | |
| 4496 // character. | |
| 4497 __ dsll(elements_end, array_length, kPointerSizeLog2); | |
| 4498 __ Daddu(elements_end, element, elements_end); | |
| 4499 result_pos = array_length; // End of live range for array_length. | |
| 4500 array_length = no_reg; | |
| 4501 __ Daddu(result_pos, | |
| 4502 result, | |
| 4503 Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag)); | |
| 4504 | |
| 4505 // Check the length of the separator. | |
| 4506 __ ld(scratch1, FieldMemOperand(separator, SeqOneByteString::kLengthOffset)); | |
| 4507 __ li(at, Operand(Smi::FromInt(1))); | |
| 4508 __ Branch(&one_char_separator, eq, scratch1, Operand(at)); | |
| 4509 __ Branch(&long_separator, gt, scratch1, Operand(at)); | |
| 4510 | |
| 4511 // Empty separator case. | |
| 4512 __ bind(&empty_separator_loop); | |
| 4513 // Live values in registers: | |
| 4514 // result_pos: the position to which we are currently copying characters. | |
| 4515 // element: Current array element. | |
| 4516 // elements_end: Array end. | |
| 4517 | |
| 4518 // Copy next array element to the result. | |
| 4519 __ ld(string, MemOperand(element)); | |
| 4520 __ Daddu(element, element, kPointerSize); | |
| 4521 __ ld(string_length, FieldMemOperand(string, String::kLengthOffset)); | |
| 4522 __ SmiUntag(string_length); | |
| 4523 __ Daddu(string, string, SeqOneByteString::kHeaderSize - kHeapObjectTag); | |
| 4524 __ CopyBytes(string, result_pos, string_length, scratch1); | |
| 4525 // End while (element < elements_end). | |
| 4526 __ Branch(&empty_separator_loop, lt, element, Operand(elements_end)); | |
| 4527 DCHECK(result.is(v0)); | |
| 4528 __ Branch(&done); | |
| 4529 | |
| 4530 // One-character separator case. | |
| 4531 __ bind(&one_char_separator); | |
| 4532 // Replace separator with its one-byte character value. | |
| 4533 __ lbu(separator, FieldMemOperand(separator, SeqOneByteString::kHeaderSize)); | |
| 4534 // Jump into the loop after the code that copies the separator, so the first | |
| 4535 // element is not preceded by a separator. | |
| 4536 __ jmp(&one_char_separator_loop_entry); | |
| 4537 | |
| 4538 __ bind(&one_char_separator_loop); | |
| 4539 // Live values in registers: | |
| 4540 // result_pos: the position to which we are currently copying characters. | |
| 4541 // element: Current array element. | |
| 4542 // elements_end: Array end. | |
| 4543 // separator: Single separator one-byte char (in lower byte). | |
| 4544 | |
| 4545 // Copy the separator character to the result. | |
| 4546 __ sb(separator, MemOperand(result_pos)); | |
| 4547 __ Daddu(result_pos, result_pos, 1); | |
| 4548 | |
| 4549 // Copy next array element to the result. | |
| 4550 __ bind(&one_char_separator_loop_entry); | |
| 4551 __ ld(string, MemOperand(element)); | |
| 4552 __ Daddu(element, element, kPointerSize); | |
| 4553 __ ld(string_length, FieldMemOperand(string, String::kLengthOffset)); | |
| 4554 __ SmiUntag(string_length); | |
| 4555 __ Daddu(string, string, SeqOneByteString::kHeaderSize - kHeapObjectTag); | |
| 4556 __ CopyBytes(string, result_pos, string_length, scratch1); | |
| 4557 // End while (element < elements_end). | |
| 4558 __ Branch(&one_char_separator_loop, lt, element, Operand(elements_end)); | |
| 4559 DCHECK(result.is(v0)); | |
| 4560 __ Branch(&done); | |
| 4561 | |
| 4562 // Long separator case (separator is more than one character). Entry is at the | |
| 4563 // label long_separator below. | |
| 4564 __ bind(&long_separator_loop); | |
| 4565 // Live values in registers: | |
| 4566 // result_pos: the position to which we are currently copying characters. | |
| 4567 // element: Current array element. | |
| 4568 // elements_end: Array end. | |
| 4569 // separator: Separator string. | |
| 4570 | |
| 4571 // Copy the separator to the result. | |
| 4572 __ ld(string_length, FieldMemOperand(separator, String::kLengthOffset)); | |
| 4573 __ SmiUntag(string_length); | |
| 4574 __ Daddu(string, | |
| 4575 separator, | |
| 4576 Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag)); | |
| 4577 __ CopyBytes(string, result_pos, string_length, scratch1); | |
| 4578 | |
| 4579 __ bind(&long_separator); | |
| 4580 __ ld(string, MemOperand(element)); | |
| 4581 __ Daddu(element, element, kPointerSize); | |
| 4582 __ ld(string_length, FieldMemOperand(string, String::kLengthOffset)); | |
| 4583 __ SmiUntag(string_length); | |
| 4584 __ Daddu(string, string, SeqOneByteString::kHeaderSize - kHeapObjectTag); | |
| 4585 __ CopyBytes(string, result_pos, string_length, scratch1); | |
| 4586 // End while (element < elements_end). | |
| 4587 __ Branch(&long_separator_loop, lt, element, Operand(elements_end)); | |
| 4588 DCHECK(result.is(v0)); | |
| 4589 __ Branch(&done); | |
| 4590 | |
| 4591 __ bind(&bailout); | |
| 4592 __ LoadRoot(v0, Heap::kUndefinedValueRootIndex); | |
| 4593 __ bind(&done); | |
| 4594 context()->Plug(v0); | |
| 4595 } | |
| 4596 | |
| 4597 | |
| 4598 void FullCodeGenerator::EmitDebugIsActive(CallRuntime* expr) { | |
| 4599 DCHECK(expr->arguments()->length() == 0); | |
| 4600 ExternalReference debug_is_active = | |
| 4601 ExternalReference::debug_is_active_address(isolate()); | |
| 4602 __ li(at, Operand(debug_is_active)); | |
| 4603 __ lbu(v0, MemOperand(at)); | |
| 4604 __ SmiTag(v0); | |
| 4605 context()->Plug(v0); | |
| 4606 } | |
| 4607 | |
| 4608 | |
| 4609 void FullCodeGenerator::EmitLoadJSRuntimeFunction(CallRuntime* expr) { | |
| 4610 // Push the builtins object as the receiver. | |
| 4611 Register receiver = LoadDescriptor::ReceiverRegister(); | |
| 4612 __ ld(receiver, GlobalObjectOperand()); | |
| 4613 __ ld(receiver, FieldMemOperand(receiver, GlobalObject::kBuiltinsOffset)); | |
| 4614 __ push(receiver); | |
| 4615 | |
| 4616 // Load the function from the receiver. | |
| 4617 __ li(LoadDescriptor::NameRegister(), Operand(expr->name())); | |
| 4618 __ li(LoadDescriptor::SlotRegister(), | |
| 4619 Operand(SmiFromSlot(expr->CallRuntimeFeedbackSlot()))); | |
| 4620 CallLoadIC(NOT_INSIDE_TYPEOF); | |
| 4621 } | |
| 4622 | |
| 4623 | |
| 4624 void FullCodeGenerator::EmitCallJSRuntimeFunction(CallRuntime* expr) { | |
| 4625 ZoneList<Expression*>* args = expr->arguments(); | |
| 4626 int arg_count = args->length(); | |
| 4627 | |
| 4628 SetCallPosition(expr, arg_count); | |
| 4629 CallFunctionStub stub(isolate(), arg_count, NO_CALL_FUNCTION_FLAGS); | |
| 4630 __ ld(a1, MemOperand(sp, (arg_count + 1) * kPointerSize)); | |
| 4631 __ CallStub(&stub); | |
| 4632 } | |
| 4633 | |
| 4634 | |
| 4635 void FullCodeGenerator::VisitCallRuntime(CallRuntime* expr) { | |
| 4636 ZoneList<Expression*>* args = expr->arguments(); | |
| 4637 int arg_count = args->length(); | |
| 4638 | |
| 4639 if (expr->is_jsruntime()) { | |
| 4640 Comment cmnt(masm_, "[ CallRuntime"); | |
| 4641 EmitLoadJSRuntimeFunction(expr); | |
| 4642 | |
| 4643 // Push the target function under the receiver. | |
| 4644 __ ld(at, MemOperand(sp, 0)); | |
| 4645 __ push(at); | |
| 4646 __ sd(v0, MemOperand(sp, kPointerSize)); | |
| 4647 | |
| 4648 // Push the arguments ("left-to-right"). | |
| 4649 for (int i = 0; i < arg_count; i++) { | |
| 4650 VisitForStackValue(args->at(i)); | |
| 4651 } | |
| 4652 | |
| 4653 PrepareForBailoutForId(expr->CallId(), NO_REGISTERS); | |
| 4654 EmitCallJSRuntimeFunction(expr); | |
| 4655 | |
| 4656 // Restore context register. | |
| 4657 __ ld(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); | |
| 4658 | |
| 4659 context()->DropAndPlug(1, v0); | |
| 4660 } else { | |
| 4661 const Runtime::Function* function = expr->function(); | |
| 4662 switch (function->function_id) { | |
| 4663 #define CALL_INTRINSIC_GENERATOR(Name) \ | |
| 4664 case Runtime::kInline##Name: { \ | |
| 4665 Comment cmnt(masm_, "[ Inline" #Name); \ | |
| 4666 return Emit##Name(expr); \ | |
| 4667 } | |
| 4668 FOR_EACH_FULL_CODE_INTRINSIC(CALL_INTRINSIC_GENERATOR) | |
| 4669 #undef CALL_INTRINSIC_GENERATOR | |
| 4670 default: { | |
| 4671 Comment cmnt(masm_, "[ CallRuntime for unhandled intrinsic"); | |
| 4672 // Push the arguments ("left-to-right"). | |
| 4673 for (int i = 0; i < arg_count; i++) { | |
| 4674 VisitForStackValue(args->at(i)); | |
| 4675 } | |
| 4676 | |
| 4677 // Call the C runtime function. | |
| 4678 PrepareForBailoutForId(expr->CallId(), NO_REGISTERS); | |
| 4679 __ CallRuntime(expr->function(), arg_count); | |
| 4680 context()->Plug(v0); | |
| 4681 } | |
| 4682 } | |
| 4683 } | |
| 4684 } | |
| 4685 | |
| 4686 | |
| 4687 void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) { | |
| 4688 switch (expr->op()) { | |
| 4689 case Token::DELETE: { | |
| 4690 Comment cmnt(masm_, "[ UnaryOperation (DELETE)"); | |
| 4691 Property* property = expr->expression()->AsProperty(); | |
| 4692 VariableProxy* proxy = expr->expression()->AsVariableProxy(); | |
| 4693 | |
| 4694 if (property != NULL) { | |
| 4695 VisitForStackValue(property->obj()); | |
| 4696 VisitForStackValue(property->key()); | |
| 4697 __ li(a1, Operand(Smi::FromInt(language_mode()))); | |
| 4698 __ push(a1); | |
| 4699 __ InvokeBuiltin(Builtins::DELETE, CALL_FUNCTION); | |
| 4700 context()->Plug(v0); | |
| 4701 } else if (proxy != NULL) { | |
| 4702 Variable* var = proxy->var(); | |
| 4703 // Delete of an unqualified identifier is disallowed in strict mode but | |
| 4704 // "delete this" is allowed. | |
| 4705 bool is_this = var->HasThisName(isolate()); | |
| 4706 DCHECK(is_sloppy(language_mode()) || is_this); | |
| 4707 if (var->IsUnallocatedOrGlobalSlot()) { | |
| 4708 __ ld(a2, GlobalObjectOperand()); | |
| 4709 __ li(a1, Operand(var->name())); | |
| 4710 __ li(a0, Operand(Smi::FromInt(SLOPPY))); | |
| 4711 __ Push(a2, a1, a0); | |
| 4712 __ InvokeBuiltin(Builtins::DELETE, CALL_FUNCTION); | |
| 4713 context()->Plug(v0); | |
| 4714 } else if (var->IsStackAllocated() || var->IsContextSlot()) { | |
| 4715 // Result of deleting non-global, non-dynamic variables is false. | |
| 4716 // The subexpression does not have side effects. | |
| 4717 context()->Plug(is_this); | |
| 4718 } else { | |
| 4719 // Non-global variable. Call the runtime to try to delete from the | |
| 4720 // context where the variable was introduced. | |
| 4721 DCHECK(!context_register().is(a2)); | |
| 4722 __ li(a2, Operand(var->name())); | |
| 4723 __ Push(context_register(), a2); | |
| 4724 __ CallRuntime(Runtime::kDeleteLookupSlot, 2); | |
| 4725 context()->Plug(v0); | |
| 4726 } | |
| 4727 } else { | |
| 4728 // Result of deleting non-property, non-variable reference is true. | |
| 4729 // The subexpression may have side effects. | |
| 4730 VisitForEffect(expr->expression()); | |
| 4731 context()->Plug(true); | |
| 4732 } | |
| 4733 break; | |
| 4734 } | |
| 4735 | |
| 4736 case Token::VOID: { | |
| 4737 Comment cmnt(masm_, "[ UnaryOperation (VOID)"); | |
| 4738 VisitForEffect(expr->expression()); | |
| 4739 context()->Plug(Heap::kUndefinedValueRootIndex); | |
| 4740 break; | |
| 4741 } | |
| 4742 | |
| 4743 case Token::NOT: { | |
| 4744 Comment cmnt(masm_, "[ UnaryOperation (NOT)"); | |
| 4745 if (context()->IsEffect()) { | |
| 4746 // Unary NOT has no side effects so it's only necessary to visit the | |
| 4747 // subexpression. Match the optimizing compiler by not branching. | |
| 4748 VisitForEffect(expr->expression()); | |
| 4749 } else if (context()->IsTest()) { | |
| 4750 const TestContext* test = TestContext::cast(context()); | |
| 4751 // The labels are swapped for the recursive call. | |
| 4752 VisitForControl(expr->expression(), | |
| 4753 test->false_label(), | |
| 4754 test->true_label(), | |
| 4755 test->fall_through()); | |
| 4756 context()->Plug(test->true_label(), test->false_label()); | |
| 4757 } else { | |
| 4758 // We handle value contexts explicitly rather than simply visiting | |
| 4759 // for control and plugging the control flow into the context, | |
| 4760 // because we need to prepare a pair of extra administrative AST ids | |
| 4761 // for the optimizing compiler. | |
| 4762 DCHECK(context()->IsAccumulatorValue() || context()->IsStackValue()); | |
| 4763 Label materialize_true, materialize_false, done; | |
| 4764 VisitForControl(expr->expression(), | |
| 4765 &materialize_false, | |
| 4766 &materialize_true, | |
| 4767 &materialize_true); | |
| 4768 __ bind(&materialize_true); | |
| 4769 PrepareForBailoutForId(expr->MaterializeTrueId(), NO_REGISTERS); | |
| 4770 __ LoadRoot(v0, Heap::kTrueValueRootIndex); | |
| 4771 if (context()->IsStackValue()) __ push(v0); | |
| 4772 __ jmp(&done); | |
| 4773 __ bind(&materialize_false); | |
| 4774 PrepareForBailoutForId(expr->MaterializeFalseId(), NO_REGISTERS); | |
| 4775 __ LoadRoot(v0, Heap::kFalseValueRootIndex); | |
| 4776 if (context()->IsStackValue()) __ push(v0); | |
| 4777 __ bind(&done); | |
| 4778 } | |
| 4779 break; | |
| 4780 } | |
| 4781 | |
| 4782 case Token::TYPEOF: { | |
| 4783 Comment cmnt(masm_, "[ UnaryOperation (TYPEOF)"); | |
| 4784 { | |
| 4785 AccumulatorValueContext context(this); | |
| 4786 VisitForTypeofValue(expr->expression()); | |
| 4787 } | |
| 4788 __ mov(a3, v0); | |
| 4789 TypeofStub typeof_stub(isolate()); | |
| 4790 __ CallStub(&typeof_stub); | |
| 4791 context()->Plug(v0); | |
| 4792 break; | |
| 4793 } | |
| 4794 | |
| 4795 default: | |
| 4796 UNREACHABLE(); | |
| 4797 } | |
| 4798 } | |
| 4799 | |
| 4800 | |
| 4801 void FullCodeGenerator::VisitCountOperation(CountOperation* expr) { | |
| 4802 DCHECK(expr->expression()->IsValidReferenceExpressionOrThis()); | |
| 4803 | |
| 4804 Comment cmnt(masm_, "[ CountOperation"); | |
| 4805 | |
| 4806 Property* prop = expr->expression()->AsProperty(); | |
| 4807 LhsKind assign_type = Property::GetAssignType(prop); | |
| 4808 | |
| 4809 // Evaluate expression and get value. | |
| 4810 if (assign_type == VARIABLE) { | |
| 4811 DCHECK(expr->expression()->AsVariableProxy()->var() != NULL); | |
| 4812 AccumulatorValueContext context(this); | |
| 4813 EmitVariableLoad(expr->expression()->AsVariableProxy()); | |
| 4814 } else { | |
| 4815 // Reserve space for result of postfix operation. | |
| 4816 if (expr->is_postfix() && !context()->IsEffect()) { | |
| 4817 __ li(at, Operand(Smi::FromInt(0))); | |
| 4818 __ push(at); | |
| 4819 } | |
| 4820 switch (assign_type) { | |
| 4821 case NAMED_PROPERTY: { | |
| 4822 // Put the object both on the stack and in the register. | |
| 4823 VisitForStackValue(prop->obj()); | |
| 4824 __ ld(LoadDescriptor::ReceiverRegister(), MemOperand(sp, 0)); | |
| 4825 EmitNamedPropertyLoad(prop); | |
| 4826 break; | |
| 4827 } | |
| 4828 | |
| 4829 case NAMED_SUPER_PROPERTY: { | |
| 4830 VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); | |
| 4831 VisitForAccumulatorValue( | |
| 4832 prop->obj()->AsSuperPropertyReference()->home_object()); | |
| 4833 __ Push(result_register()); | |
| 4834 const Register scratch = a1; | |
| 4835 __ ld(scratch, MemOperand(sp, kPointerSize)); | |
| 4836 __ Push(scratch, result_register()); | |
| 4837 EmitNamedSuperPropertyLoad(prop); | |
| 4838 break; | |
| 4839 } | |
| 4840 | |
| 4841 case KEYED_SUPER_PROPERTY: { | |
| 4842 VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); | |
| 4843 VisitForAccumulatorValue( | |
| 4844 prop->obj()->AsSuperPropertyReference()->home_object()); | |
| 4845 const Register scratch = a1; | |
| 4846 const Register scratch1 = a4; | |
| 4847 __ Move(scratch, result_register()); | |
| 4848 VisitForAccumulatorValue(prop->key()); | |
| 4849 __ Push(scratch, result_register()); | |
| 4850 __ ld(scratch1, MemOperand(sp, 2 * kPointerSize)); | |
| 4851 __ Push(scratch1, scratch, result_register()); | |
| 4852 EmitKeyedSuperPropertyLoad(prop); | |
| 4853 break; | |
| 4854 } | |
| 4855 | |
| 4856 case KEYED_PROPERTY: { | |
| 4857 VisitForStackValue(prop->obj()); | |
| 4858 VisitForStackValue(prop->key()); | |
| 4859 __ ld(LoadDescriptor::ReceiverRegister(), | |
| 4860 MemOperand(sp, 1 * kPointerSize)); | |
| 4861 __ ld(LoadDescriptor::NameRegister(), MemOperand(sp, 0)); | |
| 4862 EmitKeyedPropertyLoad(prop); | |
| 4863 break; | |
| 4864 } | |
| 4865 | |
| 4866 case VARIABLE: | |
| 4867 UNREACHABLE(); | |
| 4868 } | |
| 4869 } | |
| 4870 | |
| 4871 // We need a second deoptimization point after loading the value | |
| 4872 // in case evaluating the property load my have a side effect. | |
| 4873 if (assign_type == VARIABLE) { | |
| 4874 PrepareForBailout(expr->expression(), TOS_REG); | |
| 4875 } else { | |
| 4876 PrepareForBailoutForId(prop->LoadId(), TOS_REG); | |
| 4877 } | |
| 4878 | |
| 4879 // Inline smi case if we are in a loop. | |
| 4880 Label stub_call, done; | |
| 4881 JumpPatchSite patch_site(masm_); | |
| 4882 | |
| 4883 int count_value = expr->op() == Token::INC ? 1 : -1; | |
| 4884 __ mov(a0, v0); | |
| 4885 if (ShouldInlineSmiCase(expr->op())) { | |
| 4886 Label slow; | |
| 4887 patch_site.EmitJumpIfNotSmi(v0, &slow); | |
| 4888 | |
| 4889 // Save result for postfix expressions. | |
| 4890 if (expr->is_postfix()) { | |
| 4891 if (!context()->IsEffect()) { | |
| 4892 // Save the result on the stack. If we have a named or keyed property | |
| 4893 // we store the result under the receiver that is currently on top | |
| 4894 // of the stack. | |
| 4895 switch (assign_type) { | |
| 4896 case VARIABLE: | |
| 4897 __ push(v0); | |
| 4898 break; | |
| 4899 case NAMED_PROPERTY: | |
| 4900 __ sd(v0, MemOperand(sp, kPointerSize)); | |
| 4901 break; | |
| 4902 case NAMED_SUPER_PROPERTY: | |
| 4903 __ sd(v0, MemOperand(sp, 2 * kPointerSize)); | |
| 4904 break; | |
| 4905 case KEYED_PROPERTY: | |
| 4906 __ sd(v0, MemOperand(sp, 2 * kPointerSize)); | |
| 4907 break; | |
| 4908 case KEYED_SUPER_PROPERTY: | |
| 4909 __ sd(v0, MemOperand(sp, 3 * kPointerSize)); | |
| 4910 break; | |
| 4911 } | |
| 4912 } | |
| 4913 } | |
| 4914 | |
| 4915 Register scratch1 = a1; | |
| 4916 Register scratch2 = a4; | |
| 4917 __ li(scratch1, Operand(Smi::FromInt(count_value))); | |
| 4918 __ DadduAndCheckForOverflow(v0, v0, scratch1, scratch2); | |
| 4919 __ BranchOnNoOverflow(&done, scratch2); | |
| 4920 // Call stub. Undo operation first. | |
| 4921 __ Move(v0, a0); | |
| 4922 __ jmp(&stub_call); | |
| 4923 __ bind(&slow); | |
| 4924 } | |
| 4925 if (!is_strong(language_mode())) { | |
| 4926 ToNumberStub convert_stub(isolate()); | |
| 4927 __ CallStub(&convert_stub); | |
| 4928 PrepareForBailoutForId(expr->ToNumberId(), TOS_REG); | |
| 4929 } | |
| 4930 | |
| 4931 // Save result for postfix expressions. | |
| 4932 if (expr->is_postfix()) { | |
| 4933 if (!context()->IsEffect()) { | |
| 4934 // Save the result on the stack. If we have a named or keyed property | |
| 4935 // we store the result under the receiver that is currently on top | |
| 4936 // of the stack. | |
| 4937 switch (assign_type) { | |
| 4938 case VARIABLE: | |
| 4939 __ push(v0); | |
| 4940 break; | |
| 4941 case NAMED_PROPERTY: | |
| 4942 __ sd(v0, MemOperand(sp, kPointerSize)); | |
| 4943 break; | |
| 4944 case NAMED_SUPER_PROPERTY: | |
| 4945 __ sd(v0, MemOperand(sp, 2 * kPointerSize)); | |
| 4946 break; | |
| 4947 case KEYED_PROPERTY: | |
| 4948 __ sd(v0, MemOperand(sp, 2 * kPointerSize)); | |
| 4949 break; | |
| 4950 case KEYED_SUPER_PROPERTY: | |
| 4951 __ sd(v0, MemOperand(sp, 3 * kPointerSize)); | |
| 4952 break; | |
| 4953 } | |
| 4954 } | |
| 4955 } | |
| 4956 | |
| 4957 __ bind(&stub_call); | |
| 4958 __ mov(a1, v0); | |
| 4959 __ li(a0, Operand(Smi::FromInt(count_value))); | |
| 4960 | |
| 4961 SetExpressionPosition(expr); | |
| 4962 | |
| 4963 | |
| 4964 Handle<Code> code = CodeFactory::BinaryOpIC(isolate(), Token::ADD, | |
| 4965 strength(language_mode())).code(); | |
| 4966 CallIC(code, expr->CountBinOpFeedbackId()); | |
| 4967 patch_site.EmitPatchInfo(); | |
| 4968 __ bind(&done); | |
| 4969 | |
| 4970 if (is_strong(language_mode())) { | |
| 4971 PrepareForBailoutForId(expr->ToNumberId(), TOS_REG); | |
| 4972 } | |
| 4973 // Store the value returned in v0. | |
| 4974 switch (assign_type) { | |
| 4975 case VARIABLE: | |
| 4976 if (expr->is_postfix()) { | |
| 4977 { EffectContext context(this); | |
| 4978 EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(), | |
| 4979 Token::ASSIGN, expr->CountSlot()); | |
| 4980 PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); | |
| 4981 context.Plug(v0); | |
| 4982 } | |
| 4983 // For all contexts except EffectConstant we have the result on | |
| 4984 // top of the stack. | |
| 4985 if (!context()->IsEffect()) { | |
| 4986 context()->PlugTOS(); | |
| 4987 } | |
| 4988 } else { | |
| 4989 EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(), | |
| 4990 Token::ASSIGN, expr->CountSlot()); | |
| 4991 PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); | |
| 4992 context()->Plug(v0); | |
| 4993 } | |
| 4994 break; | |
| 4995 case NAMED_PROPERTY: { | |
| 4996 __ mov(StoreDescriptor::ValueRegister(), result_register()); | |
| 4997 __ li(StoreDescriptor::NameRegister(), | |
| 4998 Operand(prop->key()->AsLiteral()->value())); | |
| 4999 __ pop(StoreDescriptor::ReceiverRegister()); | |
| 5000 if (FLAG_vector_stores) { | |
| 5001 EmitLoadStoreICSlot(expr->CountSlot()); | |
| 5002 CallStoreIC(); | |
| 5003 } else { | |
| 5004 CallStoreIC(expr->CountStoreFeedbackId()); | |
| 5005 } | |
| 5006 PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); | |
| 5007 if (expr->is_postfix()) { | |
| 5008 if (!context()->IsEffect()) { | |
| 5009 context()->PlugTOS(); | |
| 5010 } | |
| 5011 } else { | |
| 5012 context()->Plug(v0); | |
| 5013 } | |
| 5014 break; | |
| 5015 } | |
| 5016 case NAMED_SUPER_PROPERTY: { | |
| 5017 EmitNamedSuperPropertyStore(prop); | |
| 5018 if (expr->is_postfix()) { | |
| 5019 if (!context()->IsEffect()) { | |
| 5020 context()->PlugTOS(); | |
| 5021 } | |
| 5022 } else { | |
| 5023 context()->Plug(v0); | |
| 5024 } | |
| 5025 break; | |
| 5026 } | |
| 5027 case KEYED_SUPER_PROPERTY: { | |
| 5028 EmitKeyedSuperPropertyStore(prop); | |
| 5029 if (expr->is_postfix()) { | |
| 5030 if (!context()->IsEffect()) { | |
| 5031 context()->PlugTOS(); | |
| 5032 } | |
| 5033 } else { | |
| 5034 context()->Plug(v0); | |
| 5035 } | |
| 5036 break; | |
| 5037 } | |
| 5038 case KEYED_PROPERTY: { | |
| 5039 __ mov(StoreDescriptor::ValueRegister(), result_register()); | |
| 5040 __ Pop(StoreDescriptor::ReceiverRegister(), | |
| 5041 StoreDescriptor::NameRegister()); | |
| 5042 Handle<Code> ic = | |
| 5043 CodeFactory::KeyedStoreIC(isolate(), language_mode()).code(); | |
| 5044 if (FLAG_vector_stores) { | |
| 5045 EmitLoadStoreICSlot(expr->CountSlot()); | |
| 5046 CallIC(ic); | |
| 5047 } else { | |
| 5048 CallIC(ic, expr->CountStoreFeedbackId()); | |
| 5049 } | |
| 5050 PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); | |
| 5051 if (expr->is_postfix()) { | |
| 5052 if (!context()->IsEffect()) { | |
| 5053 context()->PlugTOS(); | |
| 5054 } | |
| 5055 } else { | |
| 5056 context()->Plug(v0); | |
| 5057 } | |
| 5058 break; | |
| 5059 } | |
| 5060 } | |
| 5061 } | |
| 5062 | |
| 5063 | |
| 5064 void FullCodeGenerator::EmitLiteralCompareTypeof(Expression* expr, | |
| 5065 Expression* sub_expr, | |
| 5066 Handle<String> check) { | |
| 5067 Label materialize_true, materialize_false; | |
| 5068 Label* if_true = NULL; | |
| 5069 Label* if_false = NULL; | |
| 5070 Label* fall_through = NULL; | |
| 5071 context()->PrepareTest(&materialize_true, &materialize_false, | |
| 5072 &if_true, &if_false, &fall_through); | |
| 5073 | |
| 5074 { AccumulatorValueContext context(this); | |
| 5075 VisitForTypeofValue(sub_expr); | |
| 5076 } | |
| 5077 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 5078 | |
| 5079 Factory* factory = isolate()->factory(); | |
| 5080 if (String::Equals(check, factory->number_string())) { | |
| 5081 __ JumpIfSmi(v0, if_true); | |
| 5082 __ ld(v0, FieldMemOperand(v0, HeapObject::kMapOffset)); | |
| 5083 __ LoadRoot(at, Heap::kHeapNumberMapRootIndex); | |
| 5084 Split(eq, v0, Operand(at), if_true, if_false, fall_through); | |
| 5085 } else if (String::Equals(check, factory->string_string())) { | |
| 5086 __ JumpIfSmi(v0, if_false); | |
| 5087 // Check for undetectable objects => false. | |
| 5088 __ GetObjectType(v0, v0, a1); | |
| 5089 __ Branch(if_false, ge, a1, Operand(FIRST_NONSTRING_TYPE)); | |
| 5090 __ lbu(a1, FieldMemOperand(v0, Map::kBitFieldOffset)); | |
| 5091 __ And(a1, a1, Operand(1 << Map::kIsUndetectable)); | |
| 5092 Split(eq, a1, Operand(zero_reg), | |
| 5093 if_true, if_false, fall_through); | |
| 5094 } else if (String::Equals(check, factory->symbol_string())) { | |
| 5095 __ JumpIfSmi(v0, if_false); | |
| 5096 __ GetObjectType(v0, v0, a1); | |
| 5097 Split(eq, a1, Operand(SYMBOL_TYPE), if_true, if_false, fall_through); | |
| 5098 } else if (String::Equals(check, factory->float32x4_string())) { | |
| 5099 __ JumpIfSmi(v0, if_false); | |
| 5100 __ GetObjectType(v0, v0, a1); | |
| 5101 Split(eq, a1, Operand(FLOAT32X4_TYPE), if_true, if_false, fall_through); | |
| 5102 } else if (String::Equals(check, factory->boolean_string())) { | |
| 5103 __ LoadRoot(at, Heap::kTrueValueRootIndex); | |
| 5104 __ Branch(if_true, eq, v0, Operand(at)); | |
| 5105 __ LoadRoot(at, Heap::kFalseValueRootIndex); | |
| 5106 Split(eq, v0, Operand(at), if_true, if_false, fall_through); | |
| 5107 } else if (String::Equals(check, factory->undefined_string())) { | |
| 5108 __ LoadRoot(at, Heap::kUndefinedValueRootIndex); | |
| 5109 __ Branch(if_true, eq, v0, Operand(at)); | |
| 5110 __ JumpIfSmi(v0, if_false); | |
| 5111 // Check for undetectable objects => true. | |
| 5112 __ ld(v0, FieldMemOperand(v0, HeapObject::kMapOffset)); | |
| 5113 __ lbu(a1, FieldMemOperand(v0, Map::kBitFieldOffset)); | |
| 5114 __ And(a1, a1, Operand(1 << Map::kIsUndetectable)); | |
| 5115 Split(ne, a1, Operand(zero_reg), if_true, if_false, fall_through); | |
| 5116 } else if (String::Equals(check, factory->function_string())) { | |
| 5117 __ JumpIfSmi(v0, if_false); | |
| 5118 STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); | |
| 5119 __ GetObjectType(v0, v0, a1); | |
| 5120 __ Branch(if_true, eq, a1, Operand(JS_FUNCTION_TYPE)); | |
| 5121 Split(eq, a1, Operand(JS_FUNCTION_PROXY_TYPE), | |
| 5122 if_true, if_false, fall_through); | |
| 5123 } else if (String::Equals(check, factory->object_string())) { | |
| 5124 __ JumpIfSmi(v0, if_false); | |
| 5125 __ LoadRoot(at, Heap::kNullValueRootIndex); | |
| 5126 __ Branch(if_true, eq, v0, Operand(at)); | |
| 5127 // Check for JS objects => true. | |
| 5128 __ GetObjectType(v0, v0, a1); | |
| 5129 __ Branch(if_false, lt, a1, Operand(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); | |
| 5130 __ lbu(a1, FieldMemOperand(v0, Map::kInstanceTypeOffset)); | |
| 5131 __ Branch(if_false, gt, a1, Operand(LAST_NONCALLABLE_SPEC_OBJECT_TYPE)); | |
| 5132 // Check for undetectable objects => false. | |
| 5133 __ lbu(a1, FieldMemOperand(v0, Map::kBitFieldOffset)); | |
| 5134 __ And(a1, a1, Operand(1 << Map::kIsUndetectable)); | |
| 5135 Split(eq, a1, Operand(zero_reg), if_true, if_false, fall_through); | |
| 5136 } else { | |
| 5137 if (if_false != fall_through) __ jmp(if_false); | |
| 5138 } | |
| 5139 context()->Plug(if_true, if_false); | |
| 5140 } | |
| 5141 | |
| 5142 | |
| 5143 void FullCodeGenerator::VisitCompareOperation(CompareOperation* expr) { | |
| 5144 Comment cmnt(masm_, "[ CompareOperation"); | |
| 5145 SetExpressionPosition(expr); | |
| 5146 | |
| 5147 // First we try a fast inlined version of the compare when one of | |
| 5148 // the operands is a literal. | |
| 5149 if (TryLiteralCompare(expr)) return; | |
| 5150 | |
| 5151 // Always perform the comparison for its control flow. Pack the result | |
| 5152 // into the expression's context after the comparison is performed. | |
| 5153 Label materialize_true, materialize_false; | |
| 5154 Label* if_true = NULL; | |
| 5155 Label* if_false = NULL; | |
| 5156 Label* fall_through = NULL; | |
| 5157 context()->PrepareTest(&materialize_true, &materialize_false, | |
| 5158 &if_true, &if_false, &fall_through); | |
| 5159 | |
| 5160 Token::Value op = expr->op(); | |
| 5161 VisitForStackValue(expr->left()); | |
| 5162 switch (op) { | |
| 5163 case Token::IN: | |
| 5164 VisitForStackValue(expr->right()); | |
| 5165 __ InvokeBuiltin(Builtins::IN, CALL_FUNCTION); | |
| 5166 PrepareForBailoutBeforeSplit(expr, false, NULL, NULL); | |
| 5167 __ LoadRoot(a4, Heap::kTrueValueRootIndex); | |
| 5168 Split(eq, v0, Operand(a4), if_true, if_false, fall_through); | |
| 5169 break; | |
| 5170 | |
| 5171 case Token::INSTANCEOF: { | |
| 5172 VisitForStackValue(expr->right()); | |
| 5173 InstanceofStub stub(isolate(), InstanceofStub::kNoFlags); | |
| 5174 __ CallStub(&stub); | |
| 5175 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 5176 // The stub returns 0 for true. | |
| 5177 Split(eq, v0, Operand(zero_reg), if_true, if_false, fall_through); | |
| 5178 break; | |
| 5179 } | |
| 5180 | |
| 5181 default: { | |
| 5182 VisitForAccumulatorValue(expr->right()); | |
| 5183 Condition cc = CompareIC::ComputeCondition(op); | |
| 5184 __ mov(a0, result_register()); | |
| 5185 __ pop(a1); | |
| 5186 | |
| 5187 bool inline_smi_code = ShouldInlineSmiCase(op); | |
| 5188 JumpPatchSite patch_site(masm_); | |
| 5189 if (inline_smi_code) { | |
| 5190 Label slow_case; | |
| 5191 __ Or(a2, a0, Operand(a1)); | |
| 5192 patch_site.EmitJumpIfNotSmi(a2, &slow_case); | |
| 5193 Split(cc, a1, Operand(a0), if_true, if_false, NULL); | |
| 5194 __ bind(&slow_case); | |
| 5195 } | |
| 5196 | |
| 5197 Handle<Code> ic = CodeFactory::CompareIC( | |
| 5198 isolate(), op, strength(language_mode())).code(); | |
| 5199 CallIC(ic, expr->CompareOperationFeedbackId()); | |
| 5200 patch_site.EmitPatchInfo(); | |
| 5201 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 5202 Split(cc, v0, Operand(zero_reg), if_true, if_false, fall_through); | |
| 5203 } | |
| 5204 } | |
| 5205 | |
| 5206 // Convert the result of the comparison into one expected for this | |
| 5207 // expression's context. | |
| 5208 context()->Plug(if_true, if_false); | |
| 5209 } | |
| 5210 | |
| 5211 | |
| 5212 void FullCodeGenerator::EmitLiteralCompareNil(CompareOperation* expr, | |
| 5213 Expression* sub_expr, | |
| 5214 NilValue nil) { | |
| 5215 Label materialize_true, materialize_false; | |
| 5216 Label* if_true = NULL; | |
| 5217 Label* if_false = NULL; | |
| 5218 Label* fall_through = NULL; | |
| 5219 context()->PrepareTest(&materialize_true, &materialize_false, | |
| 5220 &if_true, &if_false, &fall_through); | |
| 5221 | |
| 5222 VisitForAccumulatorValue(sub_expr); | |
| 5223 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | |
| 5224 __ mov(a0, result_register()); | |
| 5225 if (expr->op() == Token::EQ_STRICT) { | |
| 5226 Heap::RootListIndex nil_value = nil == kNullValue ? | |
| 5227 Heap::kNullValueRootIndex : | |
| 5228 Heap::kUndefinedValueRootIndex; | |
| 5229 __ LoadRoot(a1, nil_value); | |
| 5230 Split(eq, a0, Operand(a1), if_true, if_false, fall_through); | |
| 5231 } else { | |
| 5232 Handle<Code> ic = CompareNilICStub::GetUninitialized(isolate(), nil); | |
| 5233 CallIC(ic, expr->CompareOperationFeedbackId()); | |
| 5234 Split(ne, v0, Operand(zero_reg), if_true, if_false, fall_through); | |
| 5235 } | |
| 5236 context()->Plug(if_true, if_false); | |
| 5237 } | |
| 5238 | |
| 5239 | |
| 5240 void FullCodeGenerator::VisitThisFunction(ThisFunction* expr) { | |
| 5241 __ ld(v0, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); | |
| 5242 context()->Plug(v0); | |
| 5243 } | |
| 5244 | |
| 5245 | |
| 5246 Register FullCodeGenerator::result_register() { | |
| 5247 return v0; | |
| 5248 } | |
| 5249 | |
| 5250 | |
| 5251 Register FullCodeGenerator::context_register() { | |
| 5252 return cp; | |
| 5253 } | |
| 5254 | |
| 5255 | |
| 5256 void FullCodeGenerator::StoreToFrameField(int frame_offset, Register value) { | |
| 5257 // DCHECK_EQ(POINTER_SIZE_ALIGN(frame_offset), frame_offset); | |
| 5258 DCHECK(IsAligned(frame_offset, kPointerSize)); | |
| 5259 // __ sw(value, MemOperand(fp, frame_offset)); | |
| 5260 __ sd(value, MemOperand(fp, frame_offset)); | |
| 5261 } | |
| 5262 | |
| 5263 | |
| 5264 void FullCodeGenerator::LoadContextField(Register dst, int context_index) { | |
| 5265 __ ld(dst, ContextOperand(cp, context_index)); | |
| 5266 } | |
| 5267 | |
| 5268 | |
| 5269 void FullCodeGenerator::PushFunctionArgumentForContextAllocation() { | |
| 5270 Scope* declaration_scope = scope()->DeclarationScope(); | |
| 5271 if (declaration_scope->is_script_scope() || | |
| 5272 declaration_scope->is_module_scope()) { | |
| 5273 // Contexts nested in the native context have a canonical empty function | |
| 5274 // as their closure, not the anonymous closure containing the global | |
| 5275 // code. Pass a smi sentinel and let the runtime look up the empty | |
| 5276 // function. | |
| 5277 __ li(at, Operand(Smi::FromInt(0))); | |
| 5278 } else if (declaration_scope->is_eval_scope()) { | |
| 5279 // Contexts created by a call to eval have the same closure as the | |
| 5280 // context calling eval, not the anonymous closure containing the eval | |
| 5281 // code. Fetch it from the context. | |
| 5282 __ ld(at, ContextOperand(cp, Context::CLOSURE_INDEX)); | |
| 5283 } else { | |
| 5284 DCHECK(declaration_scope->is_function_scope()); | |
| 5285 __ ld(at, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); | |
| 5286 } | |
| 5287 __ push(at); | |
| 5288 } | |
| 5289 | |
| 5290 | |
| 5291 // ---------------------------------------------------------------------------- | |
| 5292 // Non-local control flow support. | |
| 5293 | |
| 5294 void FullCodeGenerator::EnterFinallyBlock() { | |
| 5295 DCHECK(!result_register().is(a1)); | |
| 5296 // Store result register while executing finally block. | |
| 5297 __ push(result_register()); | |
| 5298 // Cook return address in link register to stack (smi encoded Code* delta). | |
| 5299 __ Dsubu(a1, ra, Operand(masm_->CodeObject())); | |
| 5300 __ SmiTag(a1); | |
| 5301 | |
| 5302 // Store result register while executing finally block. | |
| 5303 __ push(a1); | |
| 5304 | |
| 5305 // Store pending message while executing finally block. | |
| 5306 ExternalReference pending_message_obj = | |
| 5307 ExternalReference::address_of_pending_message_obj(isolate()); | |
| 5308 __ li(at, Operand(pending_message_obj)); | |
| 5309 __ ld(a1, MemOperand(at)); | |
| 5310 __ push(a1); | |
| 5311 | |
| 5312 ClearPendingMessage(); | |
| 5313 } | |
| 5314 | |
| 5315 | |
| 5316 void FullCodeGenerator::ExitFinallyBlock() { | |
| 5317 DCHECK(!result_register().is(a1)); | |
| 5318 // Restore pending message from stack. | |
| 5319 __ pop(a1); | |
| 5320 ExternalReference pending_message_obj = | |
| 5321 ExternalReference::address_of_pending_message_obj(isolate()); | |
| 5322 __ li(at, Operand(pending_message_obj)); | |
| 5323 __ sd(a1, MemOperand(at)); | |
| 5324 | |
| 5325 // Restore result register from stack. | |
| 5326 __ pop(a1); | |
| 5327 | |
| 5328 // Uncook return address and return. | |
| 5329 __ pop(result_register()); | |
| 5330 | |
| 5331 __ SmiUntag(a1); | |
| 5332 __ Daddu(at, a1, Operand(masm_->CodeObject())); | |
| 5333 __ Jump(at); | |
| 5334 } | |
| 5335 | |
| 5336 | |
| 5337 void FullCodeGenerator::ClearPendingMessage() { | |
| 5338 DCHECK(!result_register().is(a1)); | |
| 5339 ExternalReference pending_message_obj = | |
| 5340 ExternalReference::address_of_pending_message_obj(isolate()); | |
| 5341 __ LoadRoot(a1, Heap::kTheHoleValueRootIndex); | |
| 5342 __ li(at, Operand(pending_message_obj)); | |
| 5343 __ sd(a1, MemOperand(at)); | |
| 5344 } | |
| 5345 | |
| 5346 | |
| 5347 void FullCodeGenerator::EmitLoadStoreICSlot(FeedbackVectorICSlot slot) { | |
| 5348 DCHECK(FLAG_vector_stores && !slot.IsInvalid()); | |
| 5349 __ li(VectorStoreICTrampolineDescriptor::SlotRegister(), | |
| 5350 Operand(SmiFromSlot(slot))); | |
| 5351 } | |
| 5352 | |
| 5353 | |
| 5354 #undef __ | |
| 5355 | |
| 5356 | |
| 5357 void BackEdgeTable::PatchAt(Code* unoptimized_code, | |
| 5358 Address pc, | |
| 5359 BackEdgeState target_state, | |
| 5360 Code* replacement_code) { | |
| 5361 static const int kInstrSize = Assembler::kInstrSize; | |
| 5362 Address branch_address = pc - 8 * kInstrSize; | |
| 5363 CodePatcher patcher(branch_address, 1); | |
| 5364 | |
| 5365 switch (target_state) { | |
| 5366 case INTERRUPT: | |
| 5367 // slt at, a3, zero_reg (in case of count based interrupts) | |
| 5368 // beq at, zero_reg, ok | |
| 5369 // lui t9, <interrupt stub address> upper | |
| 5370 // ori t9, <interrupt stub address> u-middle | |
| 5371 // dsll t9, t9, 16 | |
| 5372 // ori t9, <interrupt stub address> lower | |
| 5373 // jalr t9 | |
| 5374 // nop | |
| 5375 // ok-label ----- pc_after points here | |
| 5376 patcher.masm()->slt(at, a3, zero_reg); | |
| 5377 break; | |
| 5378 case ON_STACK_REPLACEMENT: | |
| 5379 case OSR_AFTER_STACK_CHECK: | |
| 5380 // addiu at, zero_reg, 1 | |
| 5381 // beq at, zero_reg, ok ;; Not changed | |
| 5382 // lui t9, <on-stack replacement address> upper | |
| 5383 // ori t9, <on-stack replacement address> middle | |
| 5384 // dsll t9, t9, 16 | |
| 5385 // ori t9, <on-stack replacement address> lower | |
| 5386 // jalr t9 ;; Not changed | |
| 5387 // nop ;; Not changed | |
| 5388 // ok-label ----- pc_after points here | |
| 5389 patcher.masm()->daddiu(at, zero_reg, 1); | |
| 5390 break; | |
| 5391 } | |
| 5392 Address pc_immediate_load_address = pc - 6 * kInstrSize; | |
| 5393 // Replace the stack check address in the load-immediate (6-instr sequence) | |
| 5394 // with the entry address of the replacement code. | |
| 5395 Assembler::set_target_address_at(pc_immediate_load_address, | |
| 5396 replacement_code->entry()); | |
| 5397 | |
| 5398 unoptimized_code->GetHeap()->incremental_marking()->RecordCodeTargetPatch( | |
| 5399 unoptimized_code, pc_immediate_load_address, replacement_code); | |
| 5400 } | |
| 5401 | |
| 5402 | |
| 5403 BackEdgeTable::BackEdgeState BackEdgeTable::GetBackEdgeState( | |
| 5404 Isolate* isolate, | |
| 5405 Code* unoptimized_code, | |
| 5406 Address pc) { | |
| 5407 static const int kInstrSize = Assembler::kInstrSize; | |
| 5408 Address branch_address = pc - 8 * kInstrSize; | |
| 5409 Address pc_immediate_load_address = pc - 6 * kInstrSize; | |
| 5410 | |
| 5411 DCHECK(Assembler::IsBeq(Assembler::instr_at(pc - 7 * kInstrSize))); | |
| 5412 if (!Assembler::IsAddImmediate(Assembler::instr_at(branch_address))) { | |
| 5413 DCHECK(reinterpret_cast<uint64_t>( | |
| 5414 Assembler::target_address_at(pc_immediate_load_address)) == | |
| 5415 reinterpret_cast<uint64_t>( | |
| 5416 isolate->builtins()->InterruptCheck()->entry())); | |
| 5417 return INTERRUPT; | |
| 5418 } | |
| 5419 | |
| 5420 DCHECK(Assembler::IsAddImmediate(Assembler::instr_at(branch_address))); | |
| 5421 | |
| 5422 if (reinterpret_cast<uint64_t>( | |
| 5423 Assembler::target_address_at(pc_immediate_load_address)) == | |
| 5424 reinterpret_cast<uint64_t>( | |
| 5425 isolate->builtins()->OnStackReplacement()->entry())) { | |
| 5426 return ON_STACK_REPLACEMENT; | |
| 5427 } | |
| 5428 | |
| 5429 DCHECK(reinterpret_cast<uint64_t>( | |
| 5430 Assembler::target_address_at(pc_immediate_load_address)) == | |
| 5431 reinterpret_cast<uint64_t>( | |
| 5432 isolate->builtins()->OsrAfterStackCheck()->entry())); | |
| 5433 return OSR_AFTER_STACK_CHECK; | |
| 5434 } | |
| 5435 | |
| 5436 | |
| 5437 } // namespace internal | |
| 5438 } // namespace v8 | |
| 5439 | |
| 5440 #endif // V8_TARGET_ARCH_MIPS64 | |
| OLD | NEW |