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Issue 1186823003: Clean up JSConstructStub (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: rebased 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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1710 void MacroAssembler::InitializeFieldsWithFiller(Register start_offset, 1710 void MacroAssembler::InitializeFieldsWithFiller(Register start_offset,
1711 Register end_offset, 1711 Register end_offset,
1712 Register filler) { 1712 Register filler) {
1713 Label loop, entry; 1713 Label loop, entry;
1714 jmp(&entry); 1714 jmp(&entry);
1715 bind(&loop); 1715 bind(&loop);
1716 mov(Operand(start_offset, 0), filler); 1716 mov(Operand(start_offset, 0), filler);
1717 add(start_offset, Immediate(kPointerSize)); 1717 add(start_offset, Immediate(kPointerSize));
1718 bind(&entry); 1718 bind(&entry);
1719 cmp(start_offset, end_offset); 1719 cmp(start_offset, end_offset);
1720 j(less, &loop); 1720 j(below, &loop);
1721 } 1721 }
1722 1722
1723 1723
1724 void MacroAssembler::BooleanBitTest(Register object, 1724 void MacroAssembler::BooleanBitTest(Register object,
1725 int field_offset, 1725 int field_offset,
1726 int bit_index) { 1726 int bit_index) {
1727 bit_index += kSmiTagSize + kSmiShiftSize; 1727 bit_index += kSmiTagSize + kSmiShiftSize;
1728 DCHECK(base::bits::IsPowerOfTwo32(kBitsPerByte)); 1728 DCHECK(base::bits::IsPowerOfTwo32(kBitsPerByte));
1729 int byte_index = bit_index / kBitsPerByte; 1729 int byte_index = bit_index / kBitsPerByte;
1730 int byte_bit_index = bit_index & (kBitsPerByte - 1); 1730 int byte_bit_index = bit_index & (kBitsPerByte - 1);
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3101 mov(eax, dividend); 3101 mov(eax, dividend);
3102 shr(eax, 31); 3102 shr(eax, 31);
3103 add(edx, eax); 3103 add(edx, eax);
3104 } 3104 }
3105 3105
3106 3106
3107 } // namespace internal 3107 } // namespace internal
3108 } // namespace v8 3108 } // namespace v8
3109 3109
3110 #endif // V8_TARGET_ARCH_X87 3110 #endif // V8_TARGET_ARCH_X87
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