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Side by Side Diff: src/ppc/lithium-codegen-ppc.cc

Issue 1310283005: Use ShouldEnsureSpaceForLazyDeopt more. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 3 months ago
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1 // Copyright 2014 the V8 project authors. All rights reserved. 1 // Copyright 2014 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 #include "src/base/bits.h" 5 #include "src/base/bits.h"
6 #include "src/code-factory.h" 6 #include "src/code-factory.h"
7 #include "src/code-stubs.h" 7 #include "src/code-stubs.h"
8 #include "src/cpu-profiler.h" 8 #include "src/cpu-profiler.h"
9 #include "src/hydrogen-osr.h" 9 #include "src/hydrogen-osr.h"
10 #include "src/ic/ic.h" 10 #include "src/ic/ic.h"
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743 743
744 744
745 void LCodeGen::DeoptimizeIf(Condition cond, LInstruction* instr, 745 void LCodeGen::DeoptimizeIf(Condition cond, LInstruction* instr,
746 Deoptimizer::DeoptReason deopt_reason, 746 Deoptimizer::DeoptReason deopt_reason,
747 Deoptimizer::BailoutType bailout_type, 747 Deoptimizer::BailoutType bailout_type,
748 CRegister cr) { 748 CRegister cr) {
749 LEnvironment* environment = instr->environment(); 749 LEnvironment* environment = instr->environment();
750 RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); 750 RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt);
751 DCHECK(environment->HasBeenRegistered()); 751 DCHECK(environment->HasBeenRegistered());
752 int id = environment->deoptimization_index(); 752 int id = environment->deoptimization_index();
753 DCHECK(info()->IsOptimizing() || info()->IsStub());
754 Address entry = 753 Address entry =
755 Deoptimizer::GetDeoptimizationEntry(isolate(), id, bailout_type); 754 Deoptimizer::GetDeoptimizationEntry(isolate(), id, bailout_type);
756 if (entry == NULL) { 755 if (entry == NULL) {
757 Abort(kBailoutWasNotPrepared); 756 Abort(kBailoutWasNotPrepared);
758 return; 757 return;
759 } 758 }
760 759
761 if (FLAG_deopt_every_n_times != 0 && !info()->IsStub()) { 760 if (FLAG_deopt_every_n_times != 0 && !info()->IsStub()) {
762 CRegister alt_cr = cr6; 761 CRegister alt_cr = cr6;
763 Register scratch = scratch0(); 762 Register scratch = scratch0();
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5886 __ LoadP(temp1, MemOperand(temp1, StandardFrameConstants::kCallerFPOffset)); 5885 __ LoadP(temp1, MemOperand(temp1, StandardFrameConstants::kCallerFPOffset));
5887 5886
5888 // Check the marker in the calling frame. 5887 // Check the marker in the calling frame.
5889 __ bind(&check_frame_marker); 5888 __ bind(&check_frame_marker);
5890 __ LoadP(temp1, MemOperand(temp1, StandardFrameConstants::kMarkerOffset)); 5889 __ LoadP(temp1, MemOperand(temp1, StandardFrameConstants::kMarkerOffset));
5891 __ CmpSmiLiteral(temp1, Smi::FromInt(StackFrame::CONSTRUCT), r0); 5890 __ CmpSmiLiteral(temp1, Smi::FromInt(StackFrame::CONSTRUCT), r0);
5892 } 5891 }
5893 5892
5894 5893
5895 void LCodeGen::EnsureSpaceForLazyDeopt(int space_needed) { 5894 void LCodeGen::EnsureSpaceForLazyDeopt(int space_needed) {
5896 if (!info()->IsStub()) { 5895 if (info()->ShouldEnsureSpaceForLazyDeopt()) {
5897 // Ensure that we have enough space after the previous lazy-bailout 5896 // Ensure that we have enough space after the previous lazy-bailout
5898 // instruction for patching the code here. 5897 // instruction for patching the code here.
5899 int current_pc = masm()->pc_offset(); 5898 int current_pc = masm()->pc_offset();
5900 if (current_pc < last_lazy_deopt_pc_ + space_needed) { 5899 if (current_pc < last_lazy_deopt_pc_ + space_needed) {
5901 int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc; 5900 int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc;
5902 DCHECK_EQ(0, padding_size % Assembler::kInstrSize); 5901 DCHECK_EQ(0, padding_size % Assembler::kInstrSize);
5903 while (padding_size > 0) { 5902 while (padding_size > 0) {
5904 __ nop(); 5903 __ nop();
5905 padding_size -= Assembler::kInstrSize; 5904 padding_size -= Assembler::kInstrSize;
5906 } 5905 }
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6157 __ Push(scope_info); 6156 __ Push(scope_info);
6158 __ push(ToRegister(instr->function())); 6157 __ push(ToRegister(instr->function()));
6159 CallRuntime(Runtime::kPushBlockContext, 2, instr); 6158 CallRuntime(Runtime::kPushBlockContext, 2, instr);
6160 RecordSafepoint(Safepoint::kNoLazyDeopt); 6159 RecordSafepoint(Safepoint::kNoLazyDeopt);
6161 } 6160 }
6162 6161
6163 6162
6164 #undef __ 6163 #undef __
6165 } // namespace internal 6164 } // namespace internal
6166 } // namespace v8 6165 } // namespace v8
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