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Issue 1237793003: Reland Update V8 DEPS. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 5 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/bootstrapper.h" 10 #include "src/bootstrapper.h"
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2709 } 2709 }
2710 2710
2711 2711
2712 // ------------------------------------------------------------------------- 2712 // -------------------------------------------------------------------------
2713 // StringCharFromCodeGenerator 2713 // StringCharFromCodeGenerator
2714 2714
2715 void StringCharFromCodeGenerator::GenerateFast(MacroAssembler* masm) { 2715 void StringCharFromCodeGenerator::GenerateFast(MacroAssembler* masm) {
2716 // Fast case of Heap::LookupSingleCharacterStringFromCode. 2716 // Fast case of Heap::LookupSingleCharacterStringFromCode.
2717 STATIC_ASSERT(kSmiTag == 0); 2717 STATIC_ASSERT(kSmiTag == 0);
2718 STATIC_ASSERT(kSmiShiftSize == 0); 2718 STATIC_ASSERT(kSmiShiftSize == 0);
2719 DCHECK(base::bits::IsPowerOfTwo32(String::kMaxOneByteCharCode + 1)); 2719 DCHECK(base::bits::IsPowerOfTwo32(String::kMaxOneByteCharCodeU + 1));
2720 __ test(code_, 2720 __ test(code_, Immediate(kSmiTagMask |
2721 Immediate(kSmiTagMask | 2721 ((~String::kMaxOneByteCharCodeU) << kSmiTagSize)));
2722 ((~String::kMaxOneByteCharCode) << kSmiTagSize)));
2723 __ j(not_zero, &slow_case_); 2722 __ j(not_zero, &slow_case_);
2724 2723
2725 Factory* factory = masm->isolate()->factory(); 2724 Factory* factory = masm->isolate()->factory();
2726 __ Move(result_, Immediate(factory->single_character_string_cache())); 2725 __ Move(result_, Immediate(factory->single_character_string_cache()));
2727 STATIC_ASSERT(kSmiTag == 0); 2726 STATIC_ASSERT(kSmiTag == 0);
2728 STATIC_ASSERT(kSmiTagSize == 1); 2727 STATIC_ASSERT(kSmiTagSize == 1);
2729 STATIC_ASSERT(kSmiShiftSize == 0); 2728 STATIC_ASSERT(kSmiShiftSize == 0);
2730 // At this point code register contains smi tagged one byte char code. 2729 // At this point code register contains smi tagged one byte char code.
2731 __ mov(result_, FieldOperand(result_, 2730 __ mov(result_, FieldOperand(result_,
2732 code_, times_half_pointer_size, 2731 code_, times_half_pointer_size,
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5135 Operand(ebp, 7 * kPointerSize), NULL); 5134 Operand(ebp, 7 * kPointerSize), NULL);
5136 } 5135 }
5137 5136
5138 5137
5139 #undef __ 5138 #undef __
5140 5139
5141 } // namespace internal 5140 } // namespace internal
5142 } // namespace v8 5141 } // namespace v8
5143 5142
5144 #endif // V8_TARGET_ARCH_X87 5143 #endif // V8_TARGET_ARCH_X87
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