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1 //===- subzero/src/IceTargetLoweringX86BaseImpl.h - x86 lowering -*- C++ -*-==// | 1 //===- subzero/src/IceTargetLoweringX86BaseImpl.h - x86 lowering -*- C++ -*-==// |
2 // | 2 // |
3 // The Subzero Code Generator | 3 // The Subzero Code Generator |
4 // | 4 // |
5 // This file is distributed under the University of Illinois Open Source | 5 // This file is distributed under the University of Illinois Open Source |
6 // License. See LICENSE.TXT for details. | 6 // License. See LICENSE.TXT for details. |
7 // | 7 // |
8 //===----------------------------------------------------------------------===// | 8 //===----------------------------------------------------------------------===// |
9 /// | 9 /// |
10 /// \file | 10 /// \file |
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6089 template <typename TraitsType> | 6089 template <typename TraitsType> |
6090 void TargetX86Base<TraitsType>::lowerUnreachable( | 6090 void TargetX86Base<TraitsType>::lowerUnreachable( |
6091 const InstUnreachable * /*Instr*/) { | 6091 const InstUnreachable * /*Instr*/) { |
6092 _ud2(); | 6092 _ud2(); |
6093 // Add a fake use of esp to make sure esp adjustments after the unreachable | 6093 // Add a fake use of esp to make sure esp adjustments after the unreachable |
6094 // do not get dead-code eliminated. | 6094 // do not get dead-code eliminated. |
6095 keepEspLiveAtExit(); | 6095 keepEspLiveAtExit(); |
6096 } | 6096 } |
6097 | 6097 |
6098 template <typename TraitsType> | 6098 template <typename TraitsType> |
| 6099 void TargetX86Base<TraitsType>::lowerBreakpoint( |
| 6100 const InstBreakpoint * /*Instr*/) { |
| 6101 _int3(); |
| 6102 } |
| 6103 |
| 6104 template <typename TraitsType> |
6099 void TargetX86Base<TraitsType>::lowerRMW(const InstX86FakeRMW *RMW) { | 6105 void TargetX86Base<TraitsType>::lowerRMW(const InstX86FakeRMW *RMW) { |
6100 // If the beacon variable's live range does not end in this instruction, then | 6106 // If the beacon variable's live range does not end in this instruction, then |
6101 // it must end in the modified Store instruction that follows. This means | 6107 // it must end in the modified Store instruction that follows. This means |
6102 // that the original Store instruction is still there, either because the | 6108 // that the original Store instruction is still there, either because the |
6103 // value being stored is used beyond the Store instruction, or because dead | 6109 // value being stored is used beyond the Store instruction, or because dead |
6104 // code elimination did not happen. In either case, we cancel RMW lowering | 6110 // code elimination did not happen. In either case, we cancel RMW lowering |
6105 // (and the caller deletes the RMW instruction). | 6111 // (and the caller deletes the RMW instruction). |
6106 if (!RMW->isLastUse(RMW->getBeacon())) | 6112 if (!RMW->isLastUse(RMW->getBeacon())) |
6107 return; | 6113 return; |
6108 Operand *Src = RMW->getData(); | 6114 Operand *Src = RMW->getData(); |
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7418 emitGlobal(*Var, SectionSuffix); | 7424 emitGlobal(*Var, SectionSuffix); |
7419 } | 7425 } |
7420 } | 7426 } |
7421 } break; | 7427 } break; |
7422 } | 7428 } |
7423 } | 7429 } |
7424 } // end of namespace X86NAMESPACE | 7430 } // end of namespace X86NAMESPACE |
7425 } // end of namespace Ice | 7431 } // end of namespace Ice |
7426 | 7432 |
7427 #endif // SUBZERO_SRC_ICETARGETLOWERINGX86BASEIMPL_H | 7433 #endif // SUBZERO_SRC_ICETARGETLOWERINGX86BASEIMPL_H |
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