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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 289 VisitDeclarations(scope()->declarations()); | 289 VisitDeclarations(scope()->declarations()); |
| 290 } | 290 } |
| 291 | 291 |
| 292 { Comment cmnt(masm_, "[ Stack check"); | 292 { Comment cmnt(masm_, "[ Stack check"); |
| 293 PrepareForBailoutForId(BailoutId::Declarations(), NO_REGISTERS); | 293 PrepareForBailoutForId(BailoutId::Declarations(), NO_REGISTERS); |
| 294 Label ok; | 294 Label ok; |
| 295 __ LoadRoot(ip, Heap::kStackLimitRootIndex); | 295 __ LoadRoot(ip, Heap::kStackLimitRootIndex); |
| 296 __ cmp(sp, Operand(ip)); | 296 __ cmp(sp, Operand(ip)); |
| 297 __ b(hs, &ok); | 297 __ b(hs, &ok); |
| 298 PredictableCodeSizeScope predictable(masm_, 2 * Assembler::kInstrSize); | 298 PredictableCodeSizeScope predictable(masm_, 2 * Assembler::kInstrSize); |
| 299 StackCheckStub stub; | 299 __ Call(isolate()->builtins()->StackCheck(), RelocInfo::CODE_TARGET); |
| 300 __ CallStub(&stub); | |
| 301 __ bind(&ok); | 300 __ bind(&ok); |
| 302 } | 301 } |
| 303 | 302 |
| 304 { Comment cmnt(masm_, "[ Body"); | 303 { Comment cmnt(masm_, "[ Body"); |
| 305 ASSERT(loop_depth() == 0); | 304 ASSERT(loop_depth() == 0); |
| 306 VisitStatements(function()->body()); | 305 VisitStatements(function()->body()); |
| 307 ASSERT(loop_depth() == 0); | 306 ASSERT(loop_depth() == 0); |
| 308 } | 307 } |
| 309 } | 308 } |
| 310 | 309 |
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| 359 | 358 |
| 360 int weight = 1; | 359 int weight = 1; |
| 361 if (FLAG_weighted_back_edges) { | 360 if (FLAG_weighted_back_edges) { |
| 362 ASSERT(back_edge_target->is_bound()); | 361 ASSERT(back_edge_target->is_bound()); |
| 363 int distance = masm_->SizeOfCodeGeneratedSince(back_edge_target); | 362 int distance = masm_->SizeOfCodeGeneratedSince(back_edge_target); |
| 364 weight = Min(kMaxBackEdgeWeight, | 363 weight = Min(kMaxBackEdgeWeight, |
| 365 Max(1, distance / kCodeSizeMultiplier)); | 364 Max(1, distance / kCodeSizeMultiplier)); |
| 366 } | 365 } |
| 367 EmitProfilingCounterDecrement(weight); | 366 EmitProfilingCounterDecrement(weight); |
| 368 __ b(pl, &ok); | 367 __ b(pl, &ok); |
| 369 InterruptStub stub; | 368 __ Call(isolate()->builtins()->InterruptCheck(), RelocInfo::CODE_TARGET); |
| 370 __ CallStub(&stub); | |
| 371 | 369 |
| 372 // Record a mapping of this PC offset to the OSR id. This is used to find | 370 // Record a mapping of this PC offset to the OSR id. This is used to find |
| 373 // the AST id from the unoptimized code in order to use it as a key into | 371 // the AST id from the unoptimized code in order to use it as a key into |
| 374 // the deoptimization input data found in the optimized code. | 372 // the deoptimization input data found in the optimized code. |
| 375 RecordBackEdge(stmt->OsrEntryId()); | 373 RecordBackEdge(stmt->OsrEntryId()); |
| 376 | 374 |
| 377 EmitProfilingCounterReset(); | 375 EmitProfilingCounterReset(); |
| 378 | 376 |
| 379 __ bind(&ok); | 377 __ bind(&ok); |
| 380 PrepareForBailoutForId(stmt->EntryId(), NO_REGISTERS); | 378 PrepareForBailoutForId(stmt->EntryId(), NO_REGISTERS); |
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| 409 } | 407 } |
| 410 EmitProfilingCounterDecrement(weight); | 408 EmitProfilingCounterDecrement(weight); |
| 411 Label ok; | 409 Label ok; |
| 412 __ b(pl, &ok); | 410 __ b(pl, &ok); |
| 413 __ push(r0); | 411 __ push(r0); |
| 414 if (info_->ShouldSelfOptimize() && FLAG_direct_self_opt) { | 412 if (info_->ShouldSelfOptimize() && FLAG_direct_self_opt) { |
| 415 __ ldr(r2, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); | 413 __ ldr(r2, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| 416 __ push(r2); | 414 __ push(r2); |
| 417 __ CallRuntime(Runtime::kOptimizeFunctionOnNextCall, 1); | 415 __ CallRuntime(Runtime::kOptimizeFunctionOnNextCall, 1); |
| 418 } else { | 416 } else { |
| 419 InterruptStub stub; | 417 __ Call(isolate()->builtins()->InterruptCheck(), |
| 420 __ CallStub(&stub); | 418 RelocInfo::CODE_TARGET); |
| 421 } | 419 } |
| 422 __ pop(r0); | 420 __ pop(r0); |
| 423 EmitProfilingCounterReset(); | 421 EmitProfilingCounterReset(); |
| 424 __ bind(&ok); | 422 __ bind(&ok); |
| 425 } | 423 } |
| 426 | 424 |
| 427 #ifdef DEBUG | 425 #ifdef DEBUG |
| 428 // Add a label for checking the size of the code used for returning. | 426 // Add a label for checking the size of the code used for returning. |
| 429 Label check_exit_codesize; | 427 Label check_exit_codesize; |
| 430 masm_->bind(&check_exit_codesize); | 428 masm_->bind(&check_exit_codesize); |
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| 4886 *context_length = 0; | 4884 *context_length = 0; |
| 4887 return previous_; | 4885 return previous_; |
| 4888 } | 4886 } |
| 4889 | 4887 |
| 4890 | 4888 |
| 4891 #undef __ | 4889 #undef __ |
| 4892 | 4890 |
| 4893 } } // namespace v8::internal | 4891 } } // namespace v8::internal |
| 4894 | 4892 |
| 4895 #endif // V8_TARGET_ARCH_ARM | 4893 #endif // V8_TARGET_ARCH_ARM |
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