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Issue 1376333003: Eliminate no_frame_range data (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 2 months ago
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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 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #if V8_TARGET_ARCH_MIPS64 5 #if V8_TARGET_ARCH_MIPS64
6 6
7 // Note on Mips implementation: 7 // Note on Mips implementation:
8 // 8 //
9 // The result_register() for mips is the 'v0' register, which is defined 9 // The result_register() for mips is the 'v0' register, which is defined
10 // by the ABI to contain function return values. However, the first 10 // by the ABI to contain function return values. However, the first
11 // parameter to a function is defined to be 'a0'. So there are many 11 // parameter to a function is defined to be 'a0'. So there are many
12 // places where we have to move a previous result in v0 to a0 for the 12 // places where we have to move a previous result in v0 to a0 for the
13 // next call: mov(a0, v0). This is not needed on the other architectures. 13 // next call: mov(a0, v0). This is not needed on the other architectures.
14 14
15 #include "src/code-factory.h" 15 #include "src/code-factory.h"
16 #include "src/code-stubs.h" 16 #include "src/code-stubs.h"
17 #include "src/codegen.h" 17 #include "src/codegen.h"
18 #include "src/compiler.h"
19 #include "src/debug/debug.h" 18 #include "src/debug/debug.h"
20 #include "src/full-codegen/full-codegen.h" 19 #include "src/full-codegen/full-codegen.h"
21 #include "src/ic/ic.h" 20 #include "src/ic/ic.h"
22 #include "src/parser.h" 21 #include "src/parser.h"
23 #include "src/scopes.h" 22 #include "src/scopes.h"
24 23
25 #include "src/mips64/code-stubs-mips64.h" 24 #include "src/mips64/code-stubs-mips64.h"
26 #include "src/mips64/macro-assembler-mips64.h" 25 #include "src/mips64/macro-assembler-mips64.h"
27 26
28 namespace v8 { 27 namespace v8 {
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140 139
141 __ sd(a2, MemOperand(sp, receiver_offset)); 140 __ sd(a2, MemOperand(sp, receiver_offset));
142 __ bind(&ok); 141 __ bind(&ok);
143 } 142 }
144 // Open a frame scope to indicate that there is a frame on the stack. The 143 // Open a frame scope to indicate that there is a frame on the stack. The
145 // MANUAL indicates that the scope shouldn't actually generate code to set up 144 // MANUAL indicates that the scope shouldn't actually generate code to set up
146 // the frame (that is done below). 145 // the frame (that is done below).
147 FrameScope frame_scope(masm_, StackFrame::MANUAL); 146 FrameScope frame_scope(masm_, StackFrame::MANUAL);
148 info->set_prologue_offset(masm_->pc_offset()); 147 info->set_prologue_offset(masm_->pc_offset());
149 __ Prologue(info->IsCodePreAgingActive()); 148 __ Prologue(info->IsCodePreAgingActive());
150 info->AddNoFrameRange(0, masm_->pc_offset());
151 149
152 { Comment cmnt(masm_, "[ Allocate locals"); 150 { Comment cmnt(masm_, "[ Allocate locals");
153 int locals_count = info->scope()->num_stack_slots(); 151 int locals_count = info->scope()->num_stack_slots();
154 // Generators allocate locals, if any, in context slots. 152 // Generators allocate locals, if any, in context slots.
155 DCHECK(!IsGeneratorFunction(info->literal()->kind()) || locals_count == 0); 153 DCHECK(!IsGeneratorFunction(info->literal()->kind()) || locals_count == 0);
156 if (locals_count > 0) { 154 if (locals_count > 0) {
157 if (locals_count >= 128) { 155 if (locals_count >= 128) {
158 Label ok; 156 Label ok;
159 __ Dsubu(t1, sp, Operand(locals_count * kPointerSize)); 157 __ Dsubu(t1, sp, Operand(locals_count * kPointerSize));
160 __ LoadRoot(a2, Heap::kRealStackLimitRootIndex); 158 __ LoadRoot(a2, Heap::kRealStackLimitRootIndex);
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465 463
466 // Make sure that the constant pool is not emitted inside of the return 464 // Make sure that the constant pool is not emitted inside of the return
467 // sequence. 465 // sequence.
468 { Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); 466 { Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_);
469 // Here we use masm_-> instead of the __ macro to avoid the code coverage 467 // Here we use masm_-> instead of the __ macro to avoid the code coverage
470 // tool from instrumenting as we rely on the code size here. 468 // tool from instrumenting as we rely on the code size here.
471 int32_t arg_count = info_->scope()->num_parameters() + 1; 469 int32_t arg_count = info_->scope()->num_parameters() + 1;
472 int32_t sp_delta = arg_count * kPointerSize; 470 int32_t sp_delta = arg_count * kPointerSize;
473 SetReturnPosition(literal()); 471 SetReturnPosition(literal());
474 masm_->mov(sp, fp); 472 masm_->mov(sp, fp);
475 int no_frame_start = masm_->pc_offset();
476 masm_->MultiPop(static_cast<RegList>(fp.bit() | ra.bit())); 473 masm_->MultiPop(static_cast<RegList>(fp.bit() | ra.bit()));
477 masm_->Daddu(sp, sp, Operand(sp_delta)); 474 masm_->Daddu(sp, sp, Operand(sp_delta));
478 masm_->Jump(ra); 475 masm_->Jump(ra);
479 info_->AddNoFrameRange(no_frame_start, masm_->pc_offset());
480 } 476 }
481 } 477 }
482 } 478 }
483 479
484 480
485 void FullCodeGenerator::StackValueContext::Plug(Variable* var) const { 481 void FullCodeGenerator::StackValueContext::Plug(Variable* var) const {
486 DCHECK(var->IsStackAllocated() || var->IsContextSlot()); 482 DCHECK(var->IsStackAllocated() || var->IsContextSlot());
487 codegen()->GetVar(result_register(), var); 483 codegen()->GetVar(result_register(), var);
488 __ push(result_register()); 484 __ push(result_register());
489 } 485 }
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5245 reinterpret_cast<uint64_t>( 5241 reinterpret_cast<uint64_t>(
5246 isolate->builtins()->OsrAfterStackCheck()->entry())); 5242 isolate->builtins()->OsrAfterStackCheck()->entry()));
5247 return OSR_AFTER_STACK_CHECK; 5243 return OSR_AFTER_STACK_CHECK;
5248 } 5244 }
5249 5245
5250 5246
5251 } // namespace internal 5247 } // namespace internal
5252 } // namespace v8 5248 } // namespace v8
5253 5249
5254 #endif // V8_TARGET_ARCH_MIPS64 5250 #endif // V8_TARGET_ARCH_MIPS64
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