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Issue 1186823003: Clean up JSConstructStub (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: improve JavaScriptFrame::Print() Created 5 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 "src/v8.h" 5 #include "src/v8.h"
6 6
7 #if V8_TARGET_ARCH_X87 7 #if V8_TARGET_ARCH_X87
8 8
9 #include "src/base/bits.h" 9 #include "src/base/bits.h"
10 #include "src/base/division-by-constant.h" 10 #include "src/base/division-by-constant.h"
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1708 void MacroAssembler::InitializeFieldsWithFiller(Register start_offset, 1708 void MacroAssembler::InitializeFieldsWithFiller(Register start_offset,
1709 Register end_offset, 1709 Register end_offset,
1710 Register filler) { 1710 Register filler) {
1711 Label loop, entry; 1711 Label loop, entry;
1712 jmp(&entry); 1712 jmp(&entry);
1713 bind(&loop); 1713 bind(&loop);
1714 mov(Operand(start_offset, 0), filler); 1714 mov(Operand(start_offset, 0), filler);
1715 add(start_offset, Immediate(kPointerSize)); 1715 add(start_offset, Immediate(kPointerSize));
1716 bind(&entry); 1716 bind(&entry);
1717 cmp(start_offset, end_offset); 1717 cmp(start_offset, end_offset);
1718 j(less, &loop); 1718 j(below, &loop);
1719 } 1719 }
1720 1720
1721 1721
1722 void MacroAssembler::BooleanBitTest(Register object, 1722 void MacroAssembler::BooleanBitTest(Register object,
1723 int field_offset, 1723 int field_offset,
1724 int bit_index) { 1724 int bit_index) {
1725 bit_index += kSmiTagSize + kSmiShiftSize; 1725 bit_index += kSmiTagSize + kSmiShiftSize;
1726 DCHECK(base::bits::IsPowerOfTwo32(kBitsPerByte)); 1726 DCHECK(base::bits::IsPowerOfTwo32(kBitsPerByte));
1727 int byte_index = bit_index / kBitsPerByte; 1727 int byte_index = bit_index / kBitsPerByte;
1728 int byte_bit_index = bit_index & (kBitsPerByte - 1); 1728 int byte_bit_index = bit_index & (kBitsPerByte - 1);
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3099 mov(eax, dividend); 3099 mov(eax, dividend);
3100 shr(eax, 31); 3100 shr(eax, 31);
3101 add(edx, eax); 3101 add(edx, eax);
3102 } 3102 }
3103 3103
3104 3104
3105 } // namespace internal 3105 } // namespace internal
3106 } // namespace v8 3106 } // namespace v8
3107 3107
3108 #endif // V8_TARGET_ARCH_X87 3108 #endif // V8_TARGET_ARCH_X87
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