diff options
-rw-r--r-- | utils/TableGen/IntrinsicEmitter.cpp | 25 | ||||
-rw-r--r-- | utils/TableGen/IntrinsicEmitter.h | 2 |
2 files changed, 27 insertions, 0 deletions
diff --git a/utils/TableGen/IntrinsicEmitter.cpp b/utils/TableGen/IntrinsicEmitter.cpp index 680264ff20..c77b9ba096 100644 --- a/utils/TableGen/IntrinsicEmitter.cpp +++ b/utils/TableGen/IntrinsicEmitter.cpp @@ -100,6 +100,9 @@ void IntrinsicEmitter::run(std::ostream &OS) { // Emit mod/ref info for each function. EmitModRefInfo(Ints, OS); + + // Emit side effect info for each function. + EmitSideEffectInfo(Ints, OS); } void IntrinsicEmitter::EmitEnumInfo(const std::vector<CodeGenIntrinsic> &Ints, @@ -191,3 +194,25 @@ void IntrinsicEmitter::EmitModRefInfo(const std::vector<CodeGenIntrinsic> &Ints, } OS << "#endif\n\n"; } + +void IntrinsicEmitter:: +EmitSideEffectInfo(const std::vector<CodeGenIntrinsic> &Ints, std::ostream &OS){ + OS << "// isInstructionTriviallyDead code.\n"; + OS << "#ifdef GET_SIDE_EFFECT_INFO\n"; + OS << " switch (F->getIntrinsicID()) {\n"; + OS << " default: break;\n"; + for (unsigned i = 0, e = Ints.size(); i != e; ++i) { + switch (Ints[i].ModRef) { + default: break; + case CodeGenIntrinsic::NoMem: + case CodeGenIntrinsic::ReadArgMem: + case CodeGenIntrinsic::ReadMem: + OS << " case Intrinsic::" << Ints[i].EnumName << ":\n"; + break; + } + } + OS << " return true; // These intrinsics have no side effects.\n"; + OS << " }\n"; + OS << "#endif\n\n"; + +} diff --git a/utils/TableGen/IntrinsicEmitter.h b/utils/TableGen/IntrinsicEmitter.h index ce1b3b63a8..a8e1ffa54a 100644 --- a/utils/TableGen/IntrinsicEmitter.h +++ b/utils/TableGen/IntrinsicEmitter.h @@ -35,6 +35,8 @@ namespace llvm { std::ostream &OS); void EmitModRefInfo(const std::vector<CodeGenIntrinsic> &Ints, std::ostream &OS); + void EmitSideEffectInfo(const std::vector<CodeGenIntrinsic> &Ints, + std::ostream &OS); }; } // End llvm namespace |