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Issue 1012023002: Merge old data and pointer space. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 9 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 #include "src/v8.h" 5 #include "src/v8.h"
6 6
7 #if V8_TARGET_ARCH_IA32 7 #if V8_TARGET_ARCH_IA32
8 8
9 #include "src/base/bits.h" 9 #include "src/base/bits.h"
10 #include "src/code-factory.h" 10 #include "src/code-factory.h"
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5219 DeferredAllocate* deferred = new(zone()) DeferredAllocate(this, instr); 5219 DeferredAllocate* deferred = new(zone()) DeferredAllocate(this, instr);
5220 5220
5221 Register result = ToRegister(instr->result()); 5221 Register result = ToRegister(instr->result());
5222 Register temp = ToRegister(instr->temp()); 5222 Register temp = ToRegister(instr->temp());
5223 5223
5224 // Allocate memory for the object. 5224 // Allocate memory for the object.
5225 AllocationFlags flags = TAG_OBJECT; 5225 AllocationFlags flags = TAG_OBJECT;
5226 if (instr->hydrogen()->MustAllocateDoubleAligned()) { 5226 if (instr->hydrogen()->MustAllocateDoubleAligned()) {
5227 flags = static_cast<AllocationFlags>(flags | DOUBLE_ALIGNMENT); 5227 flags = static_cast<AllocationFlags>(flags | DOUBLE_ALIGNMENT);
5228 } 5228 }
5229 if (instr->hydrogen()->IsOldPointerSpaceAllocation()) { 5229 if (instr->hydrogen()->IsOldSpaceAllocation()) {
5230 DCHECK(!instr->hydrogen()->IsOldDataSpaceAllocation());
5231 DCHECK(!instr->hydrogen()->IsNewSpaceAllocation()); 5230 DCHECK(!instr->hydrogen()->IsNewSpaceAllocation());
5232 flags = static_cast<AllocationFlags>(flags | PRETENURE_OLD_POINTER_SPACE); 5231 flags = static_cast<AllocationFlags>(flags | PRETENURE);
5233 } else if (instr->hydrogen()->IsOldDataSpaceAllocation()) {
5234 DCHECK(!instr->hydrogen()->IsNewSpaceAllocation());
5235 flags = static_cast<AllocationFlags>(flags | PRETENURE_OLD_DATA_SPACE);
5236 } 5232 }
5237 5233
5238 if (instr->size()->IsConstantOperand()) { 5234 if (instr->size()->IsConstantOperand()) {
5239 int32_t size = ToInteger32(LConstantOperand::cast(instr->size())); 5235 int32_t size = ToInteger32(LConstantOperand::cast(instr->size()));
5240 if (size <= Page::kMaxRegularHeapObjectSize) { 5236 if (size <= Page::kMaxRegularHeapObjectSize) {
5241 __ Allocate(size, result, temp, no_reg, deferred->entry(), flags); 5237 __ Allocate(size, result, temp, no_reg, deferred->entry(), flags);
5242 } else { 5238 } else {
5243 __ jmp(deferred->entry()); 5239 __ jmp(deferred->entry());
5244 } 5240 }
5245 } else { 5241 } else {
(...skipping 42 matching lines...) Expand 10 before | Expand all | Expand 10 after
5288 __ push(Immediate(Smi::FromInt(size))); 5284 __ push(Immediate(Smi::FromInt(size)));
5289 } else { 5285 } else {
5290 // We should never get here at runtime => abort 5286 // We should never get here at runtime => abort
5291 __ int3(); 5287 __ int3();
5292 return; 5288 return;
5293 } 5289 }
5294 } 5290 }
5295 5291
5296 int flags = AllocateDoubleAlignFlag::encode( 5292 int flags = AllocateDoubleAlignFlag::encode(
5297 instr->hydrogen()->MustAllocateDoubleAligned()); 5293 instr->hydrogen()->MustAllocateDoubleAligned());
5298 if (instr->hydrogen()->IsOldPointerSpaceAllocation()) { 5294 if (instr->hydrogen()->IsOldSpaceAllocation()) {
5299 DCHECK(!instr->hydrogen()->IsOldDataSpaceAllocation());
5300 DCHECK(!instr->hydrogen()->IsNewSpaceAllocation()); 5295 DCHECK(!instr->hydrogen()->IsNewSpaceAllocation());
5301 flags = AllocateTargetSpace::update(flags, OLD_POINTER_SPACE); 5296 flags = AllocateTargetSpace::update(flags, OLD_SPACE);
5302 } else if (instr->hydrogen()->IsOldDataSpaceAllocation()) {
5303 DCHECK(!instr->hydrogen()->IsNewSpaceAllocation());
5304 flags = AllocateTargetSpace::update(flags, OLD_DATA_SPACE);
5305 } else { 5297 } else {
5306 flags = AllocateTargetSpace::update(flags, NEW_SPACE); 5298 flags = AllocateTargetSpace::update(flags, NEW_SPACE);
5307 } 5299 }
5308 __ push(Immediate(Smi::FromInt(flags))); 5300 __ push(Immediate(Smi::FromInt(flags)));
5309 5301
5310 CallRuntimeFromDeferred( 5302 CallRuntimeFromDeferred(
5311 Runtime::kAllocateInTargetSpace, 2, instr, instr->context()); 5303 Runtime::kAllocateInTargetSpace, 2, instr, instr->context());
5312 __ StoreToSafepointRegisterSlot(result, eax); 5304 __ StoreToSafepointRegisterSlot(result, eax);
5313 } 5305 }
5314 5306
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5781 CallRuntime(Runtime::kPushBlockContext, 2, instr); 5773 CallRuntime(Runtime::kPushBlockContext, 2, instr);
5782 RecordSafepoint(Safepoint::kNoLazyDeopt); 5774 RecordSafepoint(Safepoint::kNoLazyDeopt);
5783 } 5775 }
5784 5776
5785 5777
5786 #undef __ 5778 #undef __
5787 5779
5788 } } // namespace v8::internal 5780 } } // namespace v8::internal
5789 5781
5790 #endif // V8_TARGET_ARCH_IA32 5782 #endif // V8_TARGET_ARCH_IA32
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