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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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2427 obj = needs_write_barrier_for_map | 2427 obj = needs_write_barrier_for_map |
2428 ? UseRegister(instr->object()) | 2428 ? UseRegister(instr->object()) |
2429 : UseRegisterAtStart(instr->object()); | 2429 : UseRegisterAtStart(instr->object()); |
2430 } | 2430 } |
2431 | 2431 |
2432 bool can_be_constant = instr->value()->IsConstant() && | 2432 bool can_be_constant = instr->value()->IsConstant() && |
2433 HConstant::cast(instr->value())->NotInNewSpace() && | 2433 HConstant::cast(instr->value())->NotInNewSpace() && |
2434 !(FLAG_track_double_fields && instr->field_representation().IsDouble()); | 2434 !(FLAG_track_double_fields && instr->field_representation().IsDouble()); |
2435 | 2435 |
2436 LOperand* val; | 2436 LOperand* val; |
2437 if (instr->field_representation().IsByte()) { | 2437 if (instr->field_representation().IsInteger8() || |
| 2438 instr->field_representation().IsUInteger8()) { |
2438 // mov_b requires a byte register (i.e. any of eax, ebx, ecx, edx). | 2439 // mov_b requires a byte register (i.e. any of eax, ebx, ecx, edx). |
2439 // Just force the value to be in eax and we're safe here. | 2440 // Just force the value to be in eax and we're safe here. |
2440 val = UseFixed(instr->value(), eax); | 2441 val = UseFixed(instr->value(), eax); |
2441 } else if (needs_write_barrier) { | 2442 } else if (needs_write_barrier) { |
2442 val = UseTempRegister(instr->value()); | 2443 val = UseTempRegister(instr->value()); |
2443 } else if (can_be_constant) { | 2444 } else if (can_be_constant) { |
2444 val = UseRegisterOrConstant(instr->value()); | 2445 val = UseRegisterOrConstant(instr->value()); |
2445 } else if (FLAG_track_fields && instr->field_representation().IsSmi()) { | 2446 } else if (FLAG_track_fields && instr->field_representation().IsSmi()) { |
2446 val = UseTempRegister(instr->value()); | 2447 val = UseTempRegister(instr->value()); |
2447 } else if (FLAG_track_double_fields && | 2448 } else if (FLAG_track_double_fields && |
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2748 LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) { | 2749 LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) { |
2749 LOperand* object = UseRegister(instr->object()); | 2750 LOperand* object = UseRegister(instr->object()); |
2750 LOperand* index = UseTempRegister(instr->index()); | 2751 LOperand* index = UseTempRegister(instr->index()); |
2751 return DefineSameAsFirst(new(zone()) LLoadFieldByIndex(object, index)); | 2752 return DefineSameAsFirst(new(zone()) LLoadFieldByIndex(object, index)); |
2752 } | 2753 } |
2753 | 2754 |
2754 | 2755 |
2755 } } // namespace v8::internal | 2756 } } // namespace v8::internal |
2756 | 2757 |
2757 #endif // V8_TARGET_ARCH_IA32 | 2758 #endif // V8_TARGET_ARCH_IA32 |
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