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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 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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929 } | 929 } |
930 for (int i = kNumberOfSavedRegs - 1; i >= 0; i--) { | 930 for (int i = kNumberOfSavedRegs - 1; i >= 0; i--) { |
931 Register reg = saved_regs[i]; | 931 Register reg = saved_regs[i]; |
932 if (!reg.is(exclusion1) && !reg.is(exclusion2) && !reg.is(exclusion3)) { | 932 if (!reg.is(exclusion1) && !reg.is(exclusion2) && !reg.is(exclusion3)) { |
933 pop(reg); | 933 pop(reg); |
934 } | 934 } |
935 } | 935 } |
936 } | 936 } |
937 | 937 |
938 | 938 |
939 void MacroAssembler::Cvtlsi2sd(XMMRegister dst, Register src) { | |
940 xorps(dst, dst); | |
941 cvtlsi2sd(dst, src); | |
942 } | |
943 | |
944 | |
945 void MacroAssembler::Cvtlsi2sd(XMMRegister dst, const Operand& src) { | |
946 xorps(dst, dst); | |
947 cvtlsi2sd(dst, src); | |
948 } | |
949 | |
950 | |
951 void MacroAssembler::Set(Register dst, int64_t x) { | 939 void MacroAssembler::Set(Register dst, int64_t x) { |
952 if (x == 0) { | 940 if (x == 0) { |
953 xorl(dst, dst); | 941 xorl(dst, dst); |
954 } else if (is_uint32(x)) { | 942 } else if (is_uint32(x)) { |
955 movl(dst, Immediate(static_cast<uint32_t>(x))); | 943 movl(dst, Immediate(static_cast<uint32_t>(x))); |
956 } else if (is_int32(x)) { | 944 } else if (is_int32(x)) { |
957 movq(dst, Immediate(static_cast<int32_t>(x))); | 945 movq(dst, Immediate(static_cast<int32_t>(x))); |
958 } else { | 946 } else { |
959 movq(dst, x, RelocInfo::NONE64); | 947 movq(dst, x, RelocInfo::NONE64); |
960 } | 948 } |
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2922 // the double array. | 2910 // the double array. |
2923 Set(kScratchRegister, BitCast<uint64_t>( | 2911 Set(kScratchRegister, BitCast<uint64_t>( |
2924 FixedDoubleArray::canonical_not_the_hole_nan_as_double())); | 2912 FixedDoubleArray::canonical_not_the_hole_nan_as_double())); |
2925 movq(xmm_scratch, kScratchRegister); | 2913 movq(xmm_scratch, kScratchRegister); |
2926 jmp(&have_double_value, Label::kNear); | 2914 jmp(&have_double_value, Label::kNear); |
2927 | 2915 |
2928 bind(&smi_value); | 2916 bind(&smi_value); |
2929 // Value is a smi. convert to a double and store. | 2917 // Value is a smi. convert to a double and store. |
2930 // Preserve original value. | 2918 // Preserve original value. |
2931 SmiToInteger32(kScratchRegister, maybe_number); | 2919 SmiToInteger32(kScratchRegister, maybe_number); |
2932 Cvtlsi2sd(xmm_scratch, kScratchRegister); | 2920 cvtlsi2sd(xmm_scratch, kScratchRegister); |
2933 movsd(FieldOperand(elements, index, times_8, | 2921 movsd(FieldOperand(elements, index, times_8, |
2934 FixedDoubleArray::kHeaderSize - elements_offset), | 2922 FixedDoubleArray::kHeaderSize - elements_offset), |
2935 xmm_scratch); | 2923 xmm_scratch); |
2936 bind(&done); | 2924 bind(&done); |
2937 } | 2925 } |
2938 | 2926 |
2939 | 2927 |
2940 void MacroAssembler::CompareMap(Register obj, | 2928 void MacroAssembler::CompareMap(Register obj, |
2941 Handle<Map> map, | 2929 Handle<Map> map, |
2942 Label* early_success) { | 2930 Label* early_success) { |
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3055 } | 3043 } |
3056 | 3044 |
3057 | 3045 |
3058 void MacroAssembler::DoubleToI(Register result_reg, | 3046 void MacroAssembler::DoubleToI(Register result_reg, |
3059 XMMRegister input_reg, | 3047 XMMRegister input_reg, |
3060 XMMRegister scratch, | 3048 XMMRegister scratch, |
3061 MinusZeroMode minus_zero_mode, | 3049 MinusZeroMode minus_zero_mode, |
3062 Label* conversion_failed, | 3050 Label* conversion_failed, |
3063 Label::Distance dst) { | 3051 Label::Distance dst) { |
3064 cvttsd2si(result_reg, input_reg); | 3052 cvttsd2si(result_reg, input_reg); |
3065 Cvtlsi2sd(xmm0, result_reg); | 3053 cvtlsi2sd(xmm0, result_reg); |
3066 ucomisd(xmm0, input_reg); | 3054 ucomisd(xmm0, input_reg); |
3067 j(not_equal, conversion_failed, dst); | 3055 j(not_equal, conversion_failed, dst); |
3068 j(parity_even, conversion_failed, dst); // NaN. | 3056 j(parity_even, conversion_failed, dst); // NaN. |
3069 if (minus_zero_mode == FAIL_ON_MINUS_ZERO) { | 3057 if (minus_zero_mode == FAIL_ON_MINUS_ZERO) { |
3070 Label done; | 3058 Label done; |
3071 // The integer converted back is equal to the original. We | 3059 // The integer converted back is equal to the original. We |
3072 // only have to test if we got -0 as an input. | 3060 // only have to test if we got -0 as an input. |
3073 testl(result_reg, result_reg); | 3061 testl(result_reg, result_reg); |
3074 j(not_zero, &done, Label::kNear); | 3062 j(not_zero, &done, Label::kNear); |
3075 movmskpd(result_reg, input_reg); | 3063 movmskpd(result_reg, input_reg); |
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3092 Label done; | 3080 Label done; |
3093 ASSERT(!temp.is(xmm0)); | 3081 ASSERT(!temp.is(xmm0)); |
3094 | 3082 |
3095 // Heap number map check. | 3083 // Heap number map check. |
3096 CompareRoot(FieldOperand(input_reg, HeapObject::kMapOffset), | 3084 CompareRoot(FieldOperand(input_reg, HeapObject::kMapOffset), |
3097 Heap::kHeapNumberMapRootIndex); | 3085 Heap::kHeapNumberMapRootIndex); |
3098 j(not_equal, lost_precision, dst); | 3086 j(not_equal, lost_precision, dst); |
3099 | 3087 |
3100 movsd(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); | 3088 movsd(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
3101 cvttsd2si(result_reg, xmm0); | 3089 cvttsd2si(result_reg, xmm0); |
3102 Cvtlsi2sd(temp, result_reg); | 3090 cvtlsi2sd(temp, result_reg); |
3103 ucomisd(xmm0, temp); | 3091 ucomisd(xmm0, temp); |
3104 RecordComment("Deferred TaggedToI: lost precision"); | 3092 RecordComment("Deferred TaggedToI: lost precision"); |
3105 j(not_equal, lost_precision, dst); | 3093 j(not_equal, lost_precision, dst); |
3106 RecordComment("Deferred TaggedToI: NaN"); | 3094 RecordComment("Deferred TaggedToI: NaN"); |
3107 j(parity_even, lost_precision, dst); // NaN. | 3095 j(parity_even, lost_precision, dst); // NaN. |
3108 if (minus_zero_mode == FAIL_ON_MINUS_ZERO) { | 3096 if (minus_zero_mode == FAIL_ON_MINUS_ZERO) { |
3109 testl(result_reg, result_reg); | 3097 testl(result_reg, result_reg); |
3110 j(not_zero, &done, Label::kNear); | 3098 j(not_zero, &done, Label::kNear); |
3111 movmskpd(result_reg, xmm0); | 3099 movmskpd(result_reg, xmm0); |
3112 andl(result_reg, Immediate(1)); | 3100 andl(result_reg, Immediate(1)); |
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4819 j(greater, &no_memento_available); | 4807 j(greater, &no_memento_available); |
4820 CompareRoot(MemOperand(scratch_reg, -AllocationMemento::kSize), | 4808 CompareRoot(MemOperand(scratch_reg, -AllocationMemento::kSize), |
4821 Heap::kAllocationMementoMapRootIndex); | 4809 Heap::kAllocationMementoMapRootIndex); |
4822 bind(&no_memento_available); | 4810 bind(&no_memento_available); |
4823 } | 4811 } |
4824 | 4812 |
4825 | 4813 |
4826 } } // namespace v8::internal | 4814 } } // namespace v8::internal |
4827 | 4815 |
4828 #endif // V8_TARGET_ARCH_X64 | 4816 #endif // V8_TARGET_ARCH_X64 |
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