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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/base/division-by-constant.h" | 10 #include "src/base/division-by-constant.h" |
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2910 // Interleave bits from both instance types and compare them in one check. | 2910 // Interleave bits from both instance types and compare them in one check. |
2911 DCHECK_EQ(0, kFlatOneByteStringMask & (kFlatOneByteStringMask << 3)); | 2911 DCHECK_EQ(0, kFlatOneByteStringMask & (kFlatOneByteStringMask << 3)); |
2912 and_(scratch1, kFlatOneByteStringMask); | 2912 and_(scratch1, kFlatOneByteStringMask); |
2913 and_(scratch2, kFlatOneByteStringMask); | 2913 and_(scratch2, kFlatOneByteStringMask); |
2914 lea(scratch1, Operand(scratch1, scratch2, times_8, 0)); | 2914 lea(scratch1, Operand(scratch1, scratch2, times_8, 0)); |
2915 cmp(scratch1, kFlatOneByteStringTag | (kFlatOneByteStringTag << 3)); | 2915 cmp(scratch1, kFlatOneByteStringTag | (kFlatOneByteStringTag << 3)); |
2916 j(not_equal, failure); | 2916 j(not_equal, failure); |
2917 } | 2917 } |
2918 | 2918 |
2919 | 2919 |
2920 void MacroAssembler::JumpIfNotUniqueName(Operand operand, | 2920 void MacroAssembler::JumpIfNotUniqueNameInstanceType(Operand operand, |
2921 Label* not_unique_name, | 2921 Label* not_unique_name, |
2922 Label::Distance distance) { | 2922 Label::Distance distance) { |
2923 STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0); | 2923 STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0); |
2924 Label succeed; | 2924 Label succeed; |
2925 test(operand, Immediate(kIsNotStringMask | kIsNotInternalizedMask)); | 2925 test(operand, Immediate(kIsNotStringMask | kIsNotInternalizedMask)); |
2926 j(zero, &succeed); | 2926 j(zero, &succeed); |
2927 cmpb(operand, static_cast<uint8_t>(SYMBOL_TYPE)); | 2927 cmpb(operand, static_cast<uint8_t>(SYMBOL_TYPE)); |
2928 j(not_equal, not_unique_name, distance); | 2928 j(not_equal, not_unique_name, distance); |
2929 | 2929 |
2930 bind(&succeed); | 2930 bind(&succeed); |
2931 } | 2931 } |
2932 | 2932 |
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3394 if (mag.shift > 0) sar(edx, mag.shift); | 3394 if (mag.shift > 0) sar(edx, mag.shift); |
3395 mov(eax, dividend); | 3395 mov(eax, dividend); |
3396 shr(eax, 31); | 3396 shr(eax, 31); |
3397 add(edx, eax); | 3397 add(edx, eax); |
3398 } | 3398 } |
3399 | 3399 |
3400 | 3400 |
3401 } } // namespace v8::internal | 3401 } } // namespace v8::internal |
3402 | 3402 |
3403 #endif // V8_TARGET_ARCH_IA32 | 3403 #endif // V8_TARGET_ARCH_IA32 |
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