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Issue 300283003: FastCloneShallowArrayStub should not be used it the length of the array is too big as it could even… (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 6 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 "v8.h" 5 #include "v8.h"
6 6
7 #if V8_TARGET_ARCH_X64 7 #if V8_TARGET_ARCH_X64
8 8
9 #include "code-stubs.h" 9 #include "code-stubs.h"
10 #include "codegen.h" 10 #include "codegen.h"
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1769 Handle<FixedArrayBase> constant_elements_values( 1769 Handle<FixedArrayBase> constant_elements_values(
1770 FixedArrayBase::cast(constant_elements->get(1))); 1770 FixedArrayBase::cast(constant_elements->get(1)));
1771 1771
1772 AllocationSiteMode allocation_site_mode = TRACK_ALLOCATION_SITE; 1772 AllocationSiteMode allocation_site_mode = TRACK_ALLOCATION_SITE;
1773 if (has_constant_fast_elements && !FLAG_allocation_site_pretenuring) { 1773 if (has_constant_fast_elements && !FLAG_allocation_site_pretenuring) {
1774 // If the only customer of allocation sites is transitioning, then 1774 // If the only customer of allocation sites is transitioning, then
1775 // we can turn it off if we don't have anywhere else to transition to. 1775 // we can turn it off if we don't have anywhere else to transition to.
1776 allocation_site_mode = DONT_TRACK_ALLOCATION_SITE; 1776 allocation_site_mode = DONT_TRACK_ALLOCATION_SITE;
1777 } 1777 }
1778 1778
1779 if (expr->depth() > 1) { 1779 if (expr->depth() > 1 || length > JSObject::kInitialMaxFastElementArray) {
1780 __ movp(rbx, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset)); 1780 __ movp(rbx, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset));
1781 __ Push(FieldOperand(rbx, JSFunction::kLiteralsOffset)); 1781 __ Push(FieldOperand(rbx, JSFunction::kLiteralsOffset));
1782 __ Push(Smi::FromInt(expr->literal_index())); 1782 __ Push(Smi::FromInt(expr->literal_index()));
1783 __ Push(constant_elements); 1783 __ Push(constant_elements);
1784 __ Push(Smi::FromInt(flags)); 1784 __ Push(Smi::FromInt(flags));
1785 __ CallRuntime(Runtime::kHiddenCreateArrayLiteral, 4); 1785 __ CallRuntime(Runtime::kHiddenCreateArrayLiteral, 4);
1786 } else { 1786 } else {
1787 __ movp(rbx, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset)); 1787 __ movp(rbx, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset));
1788 __ movp(rax, FieldOperand(rbx, JSFunction::kLiteralsOffset)); 1788 __ movp(rax, FieldOperand(rbx, JSFunction::kLiteralsOffset));
1789 __ Move(rbx, Smi::FromInt(expr->literal_index())); 1789 __ Move(rbx, Smi::FromInt(expr->literal_index()));
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4810 ASSERT_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(), 4810 ASSERT_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(),
4811 Assembler::target_address_at(call_target_address, 4811 Assembler::target_address_at(call_target_address,
4812 unoptimized_code)); 4812 unoptimized_code));
4813 return OSR_AFTER_STACK_CHECK; 4813 return OSR_AFTER_STACK_CHECK;
4814 } 4814 }
4815 4815
4816 4816
4817 } } // namespace v8::internal 4817 } } // namespace v8::internal
4818 4818
4819 #endif // V8_TARGET_ARCH_X64 4819 #endif // V8_TARGET_ARCH_X64
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