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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 #include "src/code-factory.h" | 7 #include "src/code-factory.h" |
8 #include "src/code-stubs.h" | 8 #include "src/code-stubs.h" |
9 #include "src/hydrogen-osr.h" | 9 #include "src/hydrogen-osr.h" |
10 #include "src/ic/ic.h" | 10 #include "src/ic/ic.h" |
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3862 DoubleRegister input = ToDoubleRegister(instr->value()); | 3862 DoubleRegister input = ToDoubleRegister(instr->value()); |
3863 DoubleRegister result = ToDoubleRegister(instr->result()); | 3863 DoubleRegister result = ToDoubleRegister(instr->result()); |
3864 DoubleRegister temp = ToDoubleRegister(instr->temp()); | 3864 DoubleRegister temp = ToDoubleRegister(instr->temp()); |
3865 | 3865 |
3866 DCHECK(!input.is(result)); | 3866 DCHECK(!input.is(result)); |
3867 | 3867 |
3868 // Note that according to ECMA-262 15.8.2.13: | 3868 // Note that according to ECMA-262 15.8.2.13: |
3869 // Math.pow(-Infinity, 0.5) == Infinity | 3869 // Math.pow(-Infinity, 0.5) == Infinity |
3870 // Math.sqrt(-Infinity) == NaN | 3870 // Math.sqrt(-Infinity) == NaN |
3871 Label done; | 3871 Label done; |
3872 __ Move(temp, -V8_INFINITY); | 3872 __ Move(temp, static_cast<double>(-V8_INFINITY)); |
3873 __ BranchF(USE_DELAY_SLOT, &done, NULL, eq, temp, input); | 3873 __ BranchF(USE_DELAY_SLOT, &done, NULL, eq, temp, input); |
3874 // Set up Infinity in the delay slot. | 3874 // Set up Infinity in the delay slot. |
3875 // result is overwritten if the branch is not taken. | 3875 // result is overwritten if the branch is not taken. |
3876 __ neg_d(result, temp); | 3876 __ neg_d(result, temp); |
3877 | 3877 |
3878 // Add +0 to convert -0 to +0. | 3878 // Add +0 to convert -0 to +0. |
3879 __ add_d(result, input, kDoubleRegZero); | 3879 __ add_d(result, input, kDoubleRegZero); |
3880 __ sqrt_d(result, result); | 3880 __ sqrt_d(result, result); |
3881 __ bind(&done); | 3881 __ bind(&done); |
3882 } | 3882 } |
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5958 __ li(at, scope_info); | 5958 __ li(at, scope_info); |
5959 __ Push(at, ToRegister(instr->function())); | 5959 __ Push(at, ToRegister(instr->function())); |
5960 CallRuntime(Runtime::kPushBlockContext, 2, instr); | 5960 CallRuntime(Runtime::kPushBlockContext, 2, instr); |
5961 RecordSafepoint(Safepoint::kNoLazyDeopt); | 5961 RecordSafepoint(Safepoint::kNoLazyDeopt); |
5962 } | 5962 } |
5963 | 5963 |
5964 | 5964 |
5965 #undef __ | 5965 #undef __ |
5966 | 5966 |
5967 } } // namespace v8::internal | 5967 } } // namespace v8::internal |
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