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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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| 481 // XMM register-memory swap. We rely on having xmm0 | 481 // XMM register-memory swap. We rely on having xmm0 |
| 482 // available as a fixed scratch register. | 482 // available as a fixed scratch register. |
| 483 ASSERT(source->IsDoubleStackSlot() || destination->IsDoubleStackSlot()); | 483 ASSERT(source->IsDoubleStackSlot() || destination->IsDoubleStackSlot()); |
| 484 XMMRegister reg = cgen_->ToDoubleRegister(source->IsDoubleRegister() | 484 XMMRegister reg = cgen_->ToDoubleRegister(source->IsDoubleRegister() |
| 485 ? source | 485 ? source |
| 486 : destination); | 486 : destination); |
| 487 Operand other = | 487 Operand other = |
| 488 cgen_->ToOperand(source->IsDoubleRegister() ? destination : source); | 488 cgen_->ToOperand(source->IsDoubleRegister() ? destination : source); |
| 489 __ movsd(xmm0, other); | 489 __ movsd(xmm0, other); |
| 490 __ movsd(other, reg); | 490 __ movsd(other, reg); |
| 491 __ movsd(reg, Operand(xmm0)); | 491 __ movaps(reg, xmm0); |
| 492 } else if (source->IsDoubleStackSlot() && destination->IsDoubleStackSlot()) { | 492 } else if (source->IsDoubleStackSlot() && destination->IsDoubleStackSlot()) { |
| 493 CpuFeatureScope scope(cgen_->masm(), SSE2); | 493 CpuFeatureScope scope(cgen_->masm(), SSE2); |
| 494 // Double-width memory-to-memory. Spill on demand to use a general | 494 // Double-width memory-to-memory. Spill on demand to use a general |
| 495 // purpose temporary register and also rely on having xmm0 available as | 495 // purpose temporary register and also rely on having xmm0 available as |
| 496 // a fixed scratch register. | 496 // a fixed scratch register. |
| 497 Register tmp = EnsureTempRegister(); | 497 Register tmp = EnsureTempRegister(); |
| 498 Operand src0 = cgen_->ToOperand(source); | 498 Operand src0 = cgen_->ToOperand(source); |
| 499 Operand src1 = cgen_->HighOperand(source); | 499 Operand src1 = cgen_->HighOperand(source); |
| 500 Operand dst0 = cgen_->ToOperand(destination); | 500 Operand dst0 = cgen_->ToOperand(destination); |
| 501 Operand dst1 = cgen_->HighOperand(destination); | 501 Operand dst1 = cgen_->HighOperand(destination); |
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| 540 } else if (destination->IsRegister()) { | 540 } else if (destination->IsRegister()) { |
| 541 source_uses_[destination->index()] = CountSourceUses(destination); | 541 source_uses_[destination->index()] = CountSourceUses(destination); |
| 542 } | 542 } |
| 543 } | 543 } |
| 544 | 544 |
| 545 #undef __ | 545 #undef __ |
| 546 | 546 |
| 547 } } // namespace v8::internal | 547 } } // namespace v8::internal |
| 548 | 548 |
| 549 #endif // V8_TARGET_ARCH_IA32 | 549 #endif // V8_TARGET_ARCH_IA32 |
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