OLD | NEW |
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 |
(...skipping 670 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
681 | 681 |
682 // If instruction does not have side-effects lazy deoptimization | 682 // If instruction does not have side-effects lazy deoptimization |
683 // after the call will try to deoptimize to the point before the call. | 683 // after the call will try to deoptimize to the point before the call. |
684 // Thus we still need to attach environment to this call even if | 684 // Thus we still need to attach environment to this call even if |
685 // call sequence can not deoptimize eagerly. | 685 // call sequence can not deoptimize eagerly. |
686 bool needs_environment = | 686 bool needs_environment = |
687 (can_deoptimize == CAN_DEOPTIMIZE_EAGERLY) || | 687 (can_deoptimize == CAN_DEOPTIMIZE_EAGERLY) || |
688 !hinstr->HasObservableSideEffects(); | 688 !hinstr->HasObservableSideEffects(); |
689 if (needs_environment && !instr->HasEnvironment()) { | 689 if (needs_environment && !instr->HasEnvironment()) { |
690 instr = AssignEnvironment(instr); | 690 instr = AssignEnvironment(instr); |
| 691 // We can't really figure out if the environment is needed or not. |
| 692 instr->environment()->set_has_been_used(); |
691 } | 693 } |
692 | 694 |
693 return instr; | 695 return instr; |
694 } | 696 } |
695 | 697 |
696 | 698 |
697 LInstruction* LChunkBuilder::AssignPointerMap(LInstruction* instr) { | 699 LInstruction* LChunkBuilder::AssignPointerMap(LInstruction* instr) { |
698 ASSERT(!instr->HasPointerMap()); | 700 ASSERT(!instr->HasPointerMap()); |
699 instr->set_pointer_map(new(zone()) LPointerMap(zone())); | 701 instr->set_pointer_map(new(zone()) LPointerMap(zone())); |
700 return instr; | 702 return instr; |
(...skipping 1226 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
1927 LOperand* value = UseRegister(val); | 1929 LOperand* value = UseRegister(val); |
1928 return DefineSameAsFirst(new(zone()) LSmiUntag(value, false)); | 1930 return DefineSameAsFirst(new(zone()) LSmiUntag(value, false)); |
1929 } else { | 1931 } else { |
1930 LOperand* value = UseRegister(val); | 1932 LOperand* value = UseRegister(val); |
1931 bool truncating = instr->CanTruncateToInt32(); | 1933 bool truncating = instr->CanTruncateToInt32(); |
1932 LOperand* xmm_temp = | 1934 LOperand* xmm_temp = |
1933 (CpuFeatures::IsSafeForSnapshot(SSE2) && !truncating) | 1935 (CpuFeatures::IsSafeForSnapshot(SSE2) && !truncating) |
1934 ? FixedTemp(xmm1) : NULL; | 1936 ? FixedTemp(xmm1) : NULL; |
1935 LInstruction* result = | 1937 LInstruction* result = |
1936 DefineSameAsFirst(new(zone()) LTaggedToI(value, xmm_temp)); | 1938 DefineSameAsFirst(new(zone()) LTaggedToI(value, xmm_temp)); |
1937 if (!val->representation().IsSmi()) { | 1939 if (!val->representation().IsSmi()) result = AssignEnvironment(result); |
1938 // Note: Only deopts in deferred code. | |
1939 result = AssignEnvironment(result); | |
1940 } | |
1941 return result; | 1940 return result; |
1942 } | 1941 } |
1943 } | 1942 } |
1944 } else if (from.IsDouble()) { | 1943 } else if (from.IsDouble()) { |
1945 if (to.IsTagged()) { | 1944 if (to.IsTagged()) { |
1946 info()->MarkAsDeferredCalling(); | 1945 info()->MarkAsDeferredCalling(); |
1947 LOperand* value = UseRegisterAtStart(val); | 1946 LOperand* value = UseRegisterAtStart(val); |
1948 LOperand* temp = FLAG_inline_new ? TempRegister() : NULL; | 1947 LOperand* temp = FLAG_inline_new ? TempRegister() : NULL; |
1949 LUnallocated* result_temp = TempRegister(); | 1948 LUnallocated* result_temp = TempRegister(); |
1950 LNumberTagD* result = new(zone()) LNumberTagD(value, temp); | 1949 LNumberTagD* result = new(zone()) LNumberTagD(value, temp); |
(...skipping 85 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
2036 return AssignEnvironment(new(zone()) LCheckValue(value)); | 2035 return AssignEnvironment(new(zone()) LCheckValue(value)); |
2037 } | 2036 } |
2038 | 2037 |
2039 | 2038 |
2040 LInstruction* LChunkBuilder::DoCheckMaps(HCheckMaps* instr) { | 2039 LInstruction* LChunkBuilder::DoCheckMaps(HCheckMaps* instr) { |
2041 LOperand* value = NULL; | 2040 LOperand* value = NULL; |
2042 if (!instr->CanOmitMapChecks()) { | 2041 if (!instr->CanOmitMapChecks()) { |
2043 value = UseRegisterAtStart(instr->value()); | 2042 value = UseRegisterAtStart(instr->value()); |
2044 if (instr->has_migration_target()) info()->MarkAsDeferredCalling(); | 2043 if (instr->has_migration_target()) info()->MarkAsDeferredCalling(); |
2045 } | 2044 } |
2046 LCheckMaps* result = new(zone()) LCheckMaps(value); | 2045 LInstruction* result = new(zone()) LCheckMaps(value); |
2047 if (!instr->CanOmitMapChecks()) { | 2046 if (!instr->CanOmitMapChecks()) { |
2048 // Note: Only deopts in deferred code. | 2047 result = AssignEnvironment(result); |
2049 AssignEnvironment(result); | 2048 if (instr->has_migration_target()) result = AssignPointerMap(result); |
2050 if (instr->has_migration_target()) return AssignPointerMap(result); | |
2051 } | 2049 } |
2052 return result; | 2050 return result; |
2053 } | 2051 } |
2054 | 2052 |
2055 | 2053 |
2056 LInstruction* LChunkBuilder::DoClampToUint8(HClampToUint8* instr) { | 2054 LInstruction* LChunkBuilder::DoClampToUint8(HClampToUint8* instr) { |
2057 HValue* value = instr->value(); | 2055 HValue* value = instr->value(); |
2058 Representation input_rep = value->representation(); | 2056 Representation input_rep = value->representation(); |
2059 if (input_rep.IsDouble()) { | 2057 if (input_rep.IsDouble()) { |
2060 LOperand* reg = UseRegister(value); | 2058 LOperand* reg = UseRegister(value); |
(...skipping 650 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
2711 LOperand* index = UseTempRegister(instr->index()); | 2709 LOperand* index = UseTempRegister(instr->index()); |
2712 LLoadFieldByIndex* load = new(zone()) LLoadFieldByIndex(object, index); | 2710 LLoadFieldByIndex* load = new(zone()) LLoadFieldByIndex(object, index); |
2713 LInstruction* result = DefineSameAsFirst(load); | 2711 LInstruction* result = DefineSameAsFirst(load); |
2714 return AssignPointerMap(result); | 2712 return AssignPointerMap(result); |
2715 } | 2713 } |
2716 | 2714 |
2717 | 2715 |
2718 } } // namespace v8::internal | 2716 } } // namespace v8::internal |
2719 | 2717 |
2720 #endif // V8_TARGET_ARCH_IA32 | 2718 #endif // V8_TARGET_ARCH_IA32 |
OLD | NEW |