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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 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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1732 if (to.IsTagged()) { | 1732 if (to.IsTagged()) { |
1733 LOperand* value = UseRegister(instr->value()); | 1733 LOperand* value = UseRegister(instr->value()); |
1734 LOperand* temp = TempRegister(); | 1734 LOperand* temp = TempRegister(); |
1735 | 1735 |
1736 // Make sure that temp and result_temp are different registers. | 1736 // Make sure that temp and result_temp are different registers. |
1737 LUnallocated* result_temp = TempRegister(); | 1737 LUnallocated* result_temp = TempRegister(); |
1738 LInstruction* result = new LNumberTagD(value, temp); | 1738 LInstruction* result = new LNumberTagD(value, temp); |
1739 return AssignPointerMap(Define(result, result_temp)); | 1739 return AssignPointerMap(Define(result, result_temp)); |
1740 } else { | 1740 } else { |
1741 ASSERT(to.IsInteger32()); | 1741 ASSERT(to.IsInteger32()); |
1742 LOperand* value = UseRegister(instr->value()); | 1742 bool needs_temp = instr->CanTruncateToInt32() && |
1743 return AssignEnvironment(DefineAsRegister(new LDoubleToI(value))); | 1743 !CpuFeatures::IsSupported(SSE3); |
| 1744 LOperand* value = needs_temp ? |
| 1745 UseTempRegister(instr->value()) : UseRegister(instr->value()); |
| 1746 LOperand* temp = needs_temp ? TempRegister() : NULL; |
| 1747 return AssignEnvironment(DefineAsRegister(new LDoubleToI(value, temp))); |
1744 } | 1748 } |
1745 } else if (from.IsInteger32()) { | 1749 } else if (from.IsInteger32()) { |
1746 if (to.IsTagged()) { | 1750 if (to.IsTagged()) { |
1747 HValue* val = instr->value(); | 1751 HValue* val = instr->value(); |
1748 LOperand* value = UseRegister(val); | 1752 LOperand* value = UseRegister(val); |
1749 if (val->HasRange() && val->range()->IsInSmiRange()) { | 1753 if (val->HasRange() && val->range()->IsInSmiRange()) { |
1750 return DefineSameAsFirst(new LSmiTag(value)); | 1754 return DefineSameAsFirst(new LSmiTag(value)); |
1751 } else { | 1755 } else { |
1752 LInstruction* result = new LNumberTagI(value); | 1756 LInstruction* result = new LNumberTagI(value); |
1753 return AssignEnvironment(AssignPointerMap(DefineSameAsFirst(result))); | 1757 return AssignEnvironment(AssignPointerMap(DefineSameAsFirst(result))); |
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2113 void LPointerMap::PrintTo(StringStream* stream) const { | 2117 void LPointerMap::PrintTo(StringStream* stream) const { |
2114 stream->Add("{"); | 2118 stream->Add("{"); |
2115 for (int i = 0; i < pointer_operands_.length(); ++i) { | 2119 for (int i = 0; i < pointer_operands_.length(); ++i) { |
2116 if (i != 0) stream->Add(";"); | 2120 if (i != 0) stream->Add(";"); |
2117 pointer_operands_[i]->PrintTo(stream); | 2121 pointer_operands_[i]->PrintTo(stream); |
2118 } | 2122 } |
2119 stream->Add("} @%d", position()); | 2123 stream->Add("} @%d", position()); |
2120 } | 2124 } |
2121 | 2125 |
2122 } } // namespace v8::internal | 2126 } } // namespace v8::internal |
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