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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 // 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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3467 } | 3467 } |
3468 } | 3468 } |
3469 | 3469 |
3470 | 3470 |
3471 void LCodeGen::DoMathFloor(LUnaryMathOperation* instr) { | 3471 void LCodeGen::DoMathFloor(LUnaryMathOperation* instr) { |
3472 XMMRegister xmm_scratch = xmm0; | 3472 XMMRegister xmm_scratch = xmm0; |
3473 Register output_reg = ToRegister(instr->result()); | 3473 Register output_reg = ToRegister(instr->result()); |
3474 XMMRegister input_reg = ToDoubleRegister(instr->value()); | 3474 XMMRegister input_reg = ToDoubleRegister(instr->value()); |
3475 | 3475 |
3476 if (CpuFeatures::IsSupported(SSE4_1)) { | 3476 if (CpuFeatures::IsSupported(SSE4_1)) { |
3477 CpuFeatures::Scope scope(SSE4_1); | 3477 CpuFeatureScope scope(masm(), SSE4_1); |
3478 if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { | 3478 if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
3479 // Deoptimize if minus zero. | 3479 // Deoptimize if minus zero. |
3480 __ movq(output_reg, input_reg); | 3480 __ movq(output_reg, input_reg); |
3481 __ subq(output_reg, Immediate(1)); | 3481 __ subq(output_reg, Immediate(1)); |
3482 DeoptimizeIf(overflow, instr->environment()); | 3482 DeoptimizeIf(overflow, instr->environment()); |
3483 } | 3483 } |
3484 __ roundsd(xmm_scratch, input_reg, Assembler::kRoundDown); | 3484 __ roundsd(xmm_scratch, input_reg, Assembler::kRoundDown); |
3485 __ cvttsd2si(output_reg, xmm_scratch); | 3485 __ cvttsd2si(output_reg, xmm_scratch); |
3486 __ cmpl(output_reg, Immediate(0x80000000)); | 3486 __ cmpl(output_reg, Immediate(0x80000000)); |
3487 DeoptimizeIf(equal, instr->environment()); | 3487 DeoptimizeIf(equal, instr->environment()); |
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5834 FixedArray::kHeaderSize - kPointerSize)); | 5834 FixedArray::kHeaderSize - kPointerSize)); |
5835 __ bind(&done); | 5835 __ bind(&done); |
5836 } | 5836 } |
5837 | 5837 |
5838 | 5838 |
5839 #undef __ | 5839 #undef __ |
5840 | 5840 |
5841 } } // namespace v8::internal | 5841 } } // namespace v8::internal |
5842 | 5842 |
5843 #endif // V8_TARGET_ARCH_X64 | 5843 #endif // V8_TARGET_ARCH_X64 |
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