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Fix a build problem with VC++ by not doing the target prefix 

comparison for every builtin.  This reduces the depth of
the if/elseif chain dramatically.

llvm-svn: 45500
This commit is contained in:
Chris Lattner 2008-01-02 21:24:22 +00:00
parent 0ba4184404
commit 91678fc457
1 changed files with 24 additions and 13 deletions
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37
llvm/utils/TableGen/IntrinsicEmitter.cpp
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@ -341,13 +341,15 @@ EmitGCCBuiltinList(const std::vector<CodeGenIntrinsic> &Ints, std::ostream &OS){
void IntrinsicEmitter::
EmitIntrinsicToGCCBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints,
std::ostream &OS) {
typedef std::map<std::pair<std::string, std::string>, std::string> BIMTy;
typedef std::map<std::string, std::map<std::string, std::string> > BIMTy;
BIMTy BuiltinMap;
for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
if (!Ints[i].GCCBuiltinName.empty()) {
std::pair<std::string, std::string> Key(Ints[i].GCCBuiltinName,
Ints[i].TargetPrefix);
if (!BuiltinMap.insert(std::make_pair(Key, Ints[i].EnumName)).second)
// Get the map for this target prefix.
std::map<std::string, std::string> &BIM =BuiltinMap[Ints[i].TargetPrefix];
if (!BIM.insert(std::make_pair(Ints[i].GCCBuiltinName,
Ints[i].EnumName)).second)
throw "Intrinsic '" + Ints[i].TheDef->getName() +
"': duplicate GCC builtin name!";
}
@ -358,17 +360,26 @@ EmitIntrinsicToGCCBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints,
OS << "// in as BuiltinName, and a target prefix (e.g. 'ppc') is passed\n";
OS << "// in as TargetPrefix. The result is assigned to 'IntrinsicID'.\n";
OS << "#ifdef GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN\n";
OS << " if (0);\n";
// Note: this could emit significantly better code if we cared.
for (BIMTy::iterator I = BuiltinMap.begin(), E = BuiltinMap.end();I != E;++I){
OS << " else if (";
if (!I->first.second.empty()) {
// Emit this as a strcmp, so it can be constant folded by the FE.
OS << "!strcmp(TargetPrefix, \"" << I->first.second << "\") &&\n"
<< " ";
}
OS << "!strcmp(BuiltinName, \"" << I->first.first << "\"))\n";
OS << " IntrinsicID = Intrinsic::" << I->second << ";\n";
OS << " ";
if (!I->first.empty())
OS << "if (!strcmp(TargetPrefix, \"" << I->first << "\")) ";
else
OS << "/* Target Independent Builtins */ ";
OS << "{\n";
OS << " if (0);\n";
// Emit the comparisons for this target prefix.
std::map<std::string, std::string> &BIM = I->second;
for (std::map<std::string, std::string>::iterator J = BIM.begin(),
E = BIM.end(); J != E; ++J) {
OS << " else if (!strcmp(BuiltinName, \"" << J->first << "\"))\n";
OS << " IntrinsicID = Intrinsic::" << J->second << ";\n";
}
OS << " }\n";
}
OS << " else\n";
OS << " IntrinsicID = Intrinsic::not_intrinsic;\n";