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Side by Side Diff: src/crankshaft/x64/lithium-codegen-x64.cc

Issue 1420543003: [x64] Implement vsqrtsd AVX instruction. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 1 month ago
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1 // Copyright 2013 the V8 project authors. All rights reserved. 1 // Copyright 2013 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 #if V8_TARGET_ARCH_X64 5 #if V8_TARGET_ARCH_X64
6 6
7 #include "src/crankshaft/x64/lithium-codegen-x64.h" 7 #include "src/crankshaft/x64/lithium-codegen-x64.h"
8 8
9 #include "src/base/bits.h" 9 #include "src/base/bits.h"
10 #include "src/code-factory.h" 10 #include "src/code-factory.h"
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3705 XMMRegister output_reg = ToDoubleRegister(instr->result()); 3705 XMMRegister output_reg = ToDoubleRegister(instr->result());
3706 __ Cvtsd2ss(output_reg, input_reg); 3706 __ Cvtsd2ss(output_reg, input_reg);
3707 __ Cvtss2sd(output_reg, output_reg); 3707 __ Cvtss2sd(output_reg, output_reg);
3708 } 3708 }
3709 3709
3710 3710
3711 void LCodeGen::DoMathSqrt(LMathSqrt* instr) { 3711 void LCodeGen::DoMathSqrt(LMathSqrt* instr) {
3712 XMMRegister output = ToDoubleRegister(instr->result()); 3712 XMMRegister output = ToDoubleRegister(instr->result());
3713 if (instr->value()->IsDoubleRegister()) { 3713 if (instr->value()->IsDoubleRegister()) {
3714 XMMRegister input = ToDoubleRegister(instr->value()); 3714 XMMRegister input = ToDoubleRegister(instr->value());
3715 __ sqrtsd(output, input); 3715 __ Sqrtsd(output, input);
3716 } else { 3716 } else {
3717 Operand input = ToOperand(instr->value()); 3717 Operand input = ToOperand(instr->value());
3718 __ sqrtsd(output, input); 3718 __ Sqrtsd(output, input);
3719 } 3719 }
3720 } 3720 }
3721 3721
3722 3722
3723 void LCodeGen::DoMathPowHalf(LMathPowHalf* instr) { 3723 void LCodeGen::DoMathPowHalf(LMathPowHalf* instr) {
3724 XMMRegister xmm_scratch = double_scratch0(); 3724 XMMRegister xmm_scratch = double_scratch0();
3725 XMMRegister input_reg = ToDoubleRegister(instr->value()); 3725 XMMRegister input_reg = ToDoubleRegister(instr->value());
3726 DCHECK(ToDoubleRegister(instr->result()).is(input_reg)); 3726 DCHECK(ToDoubleRegister(instr->result()).is(input_reg));
3727 3727
3728 // Note that according to ECMA-262 15.8.2.13: 3728 // Note that according to ECMA-262 15.8.2.13:
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3740 __ j(carry, &sqrt, Label::kNear); 3740 __ j(carry, &sqrt, Label::kNear);
3741 // If input is -Infinity, return Infinity. 3741 // If input is -Infinity, return Infinity.
3742 __ Xorpd(input_reg, input_reg); 3742 __ Xorpd(input_reg, input_reg);
3743 __ subsd(input_reg, xmm_scratch); 3743 __ subsd(input_reg, xmm_scratch);
3744 __ jmp(&done, Label::kNear); 3744 __ jmp(&done, Label::kNear);
3745 3745
3746 // Square root. 3746 // Square root.
3747 __ bind(&sqrt); 3747 __ bind(&sqrt);
3748 __ Xorpd(xmm_scratch, xmm_scratch); 3748 __ Xorpd(xmm_scratch, xmm_scratch);
3749 __ addsd(input_reg, xmm_scratch); // Convert -0 to +0. 3749 __ addsd(input_reg, xmm_scratch); // Convert -0 to +0.
3750 __ sqrtsd(input_reg, input_reg); 3750 __ Sqrtsd(input_reg, input_reg);
3751 __ bind(&done); 3751 __ bind(&done);
3752 } 3752 }
3753 3753
3754 3754
3755 void LCodeGen::DoPower(LPower* instr) { 3755 void LCodeGen::DoPower(LPower* instr) {
3756 Representation exponent_type = instr->hydrogen()->right()->representation(); 3756 Representation exponent_type = instr->hydrogen()->right()->representation();
3757 // Having marked this as a call, we can use any registers. 3757 // Having marked this as a call, we can use any registers.
3758 // Just make sure that the input/output registers are the expected ones. 3758 // Just make sure that the input/output registers are the expected ones.
3759 3759
3760 Register tagged_exponent = MathPowTaggedDescriptor::exponent(); 3760 Register tagged_exponent = MathPowTaggedDescriptor::exponent();
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5869 RecordSafepoint(Safepoint::kNoLazyDeopt); 5869 RecordSafepoint(Safepoint::kNoLazyDeopt);
5870 } 5870 }
5871 5871
5872 5872
5873 #undef __ 5873 #undef __
5874 5874
5875 } // namespace internal 5875 } // namespace internal
5876 } // namespace v8 5876 } // namespace v8
5877 5877
5878 #endif // V8_TARGET_ARCH_X64 5878 #endif // V8_TARGET_ARCH_X64
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