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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 // 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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5000 private: | 5000 private: |
5001 LTaggedToI* instr_; | 5001 LTaggedToI* instr_; |
5002 }; | 5002 }; |
5003 | 5003 |
5004 LOperand* input = instr->value(); | 5004 LOperand* input = instr->value(); |
5005 ASSERT(input->IsRegister()); | 5005 ASSERT(input->IsRegister()); |
5006 ASSERT(input->Equals(instr->result())); | 5006 ASSERT(input->Equals(instr->result())); |
5007 | 5007 |
5008 Register input_reg = ToRegister(input); | 5008 Register input_reg = ToRegister(input); |
5009 | 5009 |
5010 DeferredTaggedToI* deferred = new(zone()) DeferredTaggedToI(this, instr); | 5010 if (instr->hydrogen()->value()->representation().IsSmi()) { |
| 5011 __ SmiUntag(input_reg); |
| 5012 } else { |
| 5013 DeferredTaggedToI* deferred = new(zone()) DeferredTaggedToI(this, instr); |
5011 | 5014 |
5012 // Optimistically untag the input. | 5015 // Optimistically untag the input. |
5013 // If the input is a HeapObject, SmiUntag will set the carry flag. | 5016 // If the input is a HeapObject, SmiUntag will set the carry flag. |
5014 __ SmiUntag(input_reg, SetCC); | 5017 __ SmiUntag(input_reg, SetCC); |
5015 // Branch to deferred code if the input was tagged. | 5018 // Branch to deferred code if the input was tagged. |
5016 // The deferred code will take care of restoring the tag. | 5019 // The deferred code will take care of restoring the tag. |
5017 __ b(cs, deferred->entry()); | 5020 __ b(cs, deferred->entry()); |
5018 __ bind(deferred->exit()); | 5021 __ bind(deferred->exit()); |
| 5022 } |
5019 } | 5023 } |
5020 | 5024 |
5021 | 5025 |
5022 void LCodeGen::DoNumberUntagD(LNumberUntagD* instr) { | 5026 void LCodeGen::DoNumberUntagD(LNumberUntagD* instr) { |
5023 LOperand* input = instr->value(); | 5027 LOperand* input = instr->value(); |
5024 ASSERT(input->IsRegister()); | 5028 ASSERT(input->IsRegister()); |
5025 LOperand* result = instr->result(); | 5029 LOperand* result = instr->result(); |
5026 ASSERT(result->IsDoubleRegister()); | 5030 ASSERT(result->IsDoubleRegister()); |
5027 | 5031 |
5028 Register input_reg = ToRegister(input); | 5032 Register input_reg = ToRegister(input); |
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5797 __ sub(scratch, result, Operand::PointerOffsetFromSmiKey(index)); | 5801 __ sub(scratch, result, Operand::PointerOffsetFromSmiKey(index)); |
5798 __ ldr(result, FieldMemOperand(scratch, | 5802 __ ldr(result, FieldMemOperand(scratch, |
5799 FixedArray::kHeaderSize - kPointerSize)); | 5803 FixedArray::kHeaderSize - kPointerSize)); |
5800 __ bind(&done); | 5804 __ bind(&done); |
5801 } | 5805 } |
5802 | 5806 |
5803 | 5807 |
5804 #undef __ | 5808 #undef __ |
5805 | 5809 |
5806 } } // namespace v8::internal | 5810 } } // namespace v8::internal |
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