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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 <limits> |
| 6 |
5 #include "src/v8.h" | 7 #include "src/v8.h" |
6 | 8 |
7 #include "src/arm/lithium-codegen-arm.h" | 9 #include "src/arm/lithium-codegen-arm.h" |
8 #include "src/arm/lithium-gap-resolver-arm.h" | 10 #include "src/arm/lithium-gap-resolver-arm.h" |
9 #include "src/base/bits.h" | 11 #include "src/base/bits.h" |
10 #include "src/code-factory.h" | 12 #include "src/code-factory.h" |
11 #include "src/code-stubs.h" | 13 #include "src/code-stubs.h" |
12 #include "src/hydrogen-osr.h" | 14 #include "src/hydrogen-osr.h" |
13 #include "src/ic/ic.h" | 15 #include "src/ic/ic.h" |
14 #include "src/ic/stub-cache.h" | 16 #include "src/ic/stub-cache.h" |
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3873 | 3875 |
3874 void LCodeGen::DoMathPowHalf(LMathPowHalf* instr) { | 3876 void LCodeGen::DoMathPowHalf(LMathPowHalf* instr) { |
3875 DwVfpRegister input = ToDoubleRegister(instr->value()); | 3877 DwVfpRegister input = ToDoubleRegister(instr->value()); |
3876 DwVfpRegister result = ToDoubleRegister(instr->result()); | 3878 DwVfpRegister result = ToDoubleRegister(instr->result()); |
3877 DwVfpRegister temp = double_scratch0(); | 3879 DwVfpRegister temp = double_scratch0(); |
3878 | 3880 |
3879 // Note that according to ECMA-262 15.8.2.13: | 3881 // Note that according to ECMA-262 15.8.2.13: |
3880 // Math.pow(-Infinity, 0.5) == Infinity | 3882 // Math.pow(-Infinity, 0.5) == Infinity |
3881 // Math.sqrt(-Infinity) == NaN | 3883 // Math.sqrt(-Infinity) == NaN |
3882 Label done; | 3884 Label done; |
3883 __ vmov(temp, -V8_INFINITY, scratch0()); | 3885 __ vmov(temp, -std::numeric_limits<double>::infinity(), scratch0()); |
3884 __ VFPCompareAndSetFlags(input, temp); | 3886 __ VFPCompareAndSetFlags(input, temp); |
3885 __ vneg(result, temp, eq); | 3887 __ vneg(result, temp, eq); |
3886 __ b(&done, eq); | 3888 __ b(&done, eq); |
3887 | 3889 |
3888 // Add +0 to convert -0 to +0. | 3890 // Add +0 to convert -0 to +0. |
3889 __ vadd(result, input, kDoubleRegZero); | 3891 __ vadd(result, input, kDoubleRegZero); |
3890 __ vsqrt(result, result); | 3892 __ vsqrt(result, result); |
3891 __ bind(&done); | 3893 __ bind(&done); |
3892 } | 3894 } |
3893 | 3895 |
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5948 __ Push(scope_info); | 5950 __ Push(scope_info); |
5949 __ push(ToRegister(instr->function())); | 5951 __ push(ToRegister(instr->function())); |
5950 CallRuntime(Runtime::kPushBlockContext, 2, instr); | 5952 CallRuntime(Runtime::kPushBlockContext, 2, instr); |
5951 RecordSafepoint(Safepoint::kNoLazyDeopt); | 5953 RecordSafepoint(Safepoint::kNoLazyDeopt); |
5952 } | 5954 } |
5953 | 5955 |
5954 | 5956 |
5955 #undef __ | 5957 #undef __ |
5956 | 5958 |
5957 } } // namespace v8::internal | 5959 } } // namespace v8::internal |
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