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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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4452 LOperand* input = instr->value(); | 4452 LOperand* input = instr->value(); |
4453 LOperand* output = instr->result(); | 4453 LOperand* output = instr->result(); |
4454 LOperand* temp = instr->temp(); | 4454 LOperand* temp = instr->temp(); |
4455 | 4455 |
4456 __ LoadUint32(ToDoubleRegister(output), | 4456 __ LoadUint32(ToDoubleRegister(output), |
4457 ToRegister(input), | 4457 ToRegister(input), |
4458 ToDoubleRegister(temp)); | 4458 ToDoubleRegister(temp)); |
4459 } | 4459 } |
4460 | 4460 |
4461 | 4461 |
| 4462 void LCodeGen::DoUint32ToSmi(LUint32ToSmi* instr) { |
| 4463 LOperand* input = instr->value(); |
| 4464 ASSERT(input->IsRegister()); |
| 4465 LOperand* output = instr->result(); |
| 4466 if (!instr->hydrogen()->value()->HasRange() || |
| 4467 !instr->hydrogen()->value()->range()->IsInSmiRange() || |
| 4468 instr->hydrogen()->value()->range()->upper() == kMaxInt) { |
| 4469 // The Range class can't express upper bounds in the (kMaxInt, kMaxUint32] |
| 4470 // interval, so we treat kMaxInt as a sentinel for this entire interval. |
| 4471 __ testl(ToRegister(input), Immediate(0x80000000)); |
| 4472 DeoptimizeIf(not_zero, instr->environment()); |
| 4473 } |
| 4474 __ Integer32ToSmi(ToRegister(output), ToRegister(input)); |
| 4475 } |
| 4476 |
| 4477 |
4462 void LCodeGen::DoNumberTagI(LNumberTagI* instr) { | 4478 void LCodeGen::DoNumberTagI(LNumberTagI* instr) { |
4463 LOperand* input = instr->value(); | 4479 LOperand* input = instr->value(); |
4464 ASSERT(input->IsRegister() && input->Equals(instr->result())); | 4480 ASSERT(input->IsRegister() && input->Equals(instr->result())); |
4465 Register reg = ToRegister(input); | 4481 Register reg = ToRegister(input); |
4466 | 4482 |
4467 __ Integer32ToSmi(reg, reg); | 4483 __ Integer32ToSmi(reg, reg); |
4468 } | 4484 } |
4469 | 4485 |
4470 | 4486 |
4471 void LCodeGen::DoNumberTagU(LNumberTagU* instr) { | 4487 void LCodeGen::DoNumberTagU(LNumberTagU* instr) { |
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5511 FixedArray::kHeaderSize - kPointerSize)); | 5527 FixedArray::kHeaderSize - kPointerSize)); |
5512 __ bind(&done); | 5528 __ bind(&done); |
5513 } | 5529 } |
5514 | 5530 |
5515 | 5531 |
5516 #undef __ | 5532 #undef __ |
5517 | 5533 |
5518 } } // namespace v8::internal | 5534 } } // namespace v8::internal |
5519 | 5535 |
5520 #endif // V8_TARGET_ARCH_X64 | 5536 #endif // V8_TARGET_ARCH_X64 |
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