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autogenerate the function name recognizer 

llvm-svn: 26663
This commit is contained in:
Chris Lattner 2006-03-09 20:34:19 +00:00
parent 285c95d7eb
commit 6d8104efd2
2 changed files with 41 additions and 0 deletions
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37
llvm/utils/TableGen/IntrinsicEmitter.cpp
View File

@ -55,10 +55,14 @@ void IntrinsicEmitter::run(std::ostream &OS) {
// Emit the enum information.
EmitEnumInfo(Ints, OS);
// Emit the function name recognizer.
EmitFnNameRecognizer(Ints, OS);
}
void IntrinsicEmitter::EmitEnumInfo(const std::vector<CodeGenIntrinsic> &Ints,
std::ostream &OS) {
OS << "// Enum values for Intrinsics.h\n";
OS << "#ifdef GET_INTRINSIC_ENUM_VALUES\n";
for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
OS << " " << Ints[i].EnumName;
@ -68,3 +72,36 @@ void IntrinsicEmitter::EmitEnumInfo(const std::vector<CodeGenIntrinsic> &Ints,
}
OS << "#endif\n\n";
}
void IntrinsicEmitter::
EmitFnNameRecognizer(const std::vector<CodeGenIntrinsic> &Ints,
std::ostream &OS) {
// Build a function name -> intrinsic name mapping.
std::map<std::string, std::string> IntMapping;
for (unsigned i = 0, e = Ints.size(); i != e; ++i)
IntMapping[Ints[i].Name] = Ints[i].EnumName;
OS << "// Function name -> enum value recognizer code.\n";
OS << "#ifdef GET_FUNCTION_RECOGNIZER\n";
OS << " switch (Name[5]) {\n";
OS << " // The 'llvm.' namespace is reserved!\n";
OS << " default: assert(0 && \"Unknown LLVM intrinsic function!\");\n";
// Emit the intrinsics in sorted order.
char LastChar = 0;
for (std::map<std::string, std::string>::iterator I = IntMapping.begin(),
E = IntMapping.end(); I != E; ++I) {
assert(I->first.size() > 5 && std::string(I->first.begin(),
I->first.begin()+5) == "llvm." &&
"Invalid intrinsic name!");
if (I->first[5] != LastChar) {
LastChar = I->first[5];
OS << " case '" << LastChar << "':\n";
}
OS << " if (Name == \"" << I->first << "\") return Intrinsic::"
<< I->second << ";\n";
}
OS << " }\n";
OS << "#endif\n";
}

4
llvm/utils/TableGen/IntrinsicEmitter.h
View File

@ -28,6 +28,10 @@ namespace llvm {
void EmitEnumInfo(const std::vector<CodeGenIntrinsic> &Ints,
std::ostream &OS);
void EmitFnNameRecognizer(const std::vector<CodeGenIntrinsic> &Ints,
std::ostream &OS);
};
} // End llvm namespace