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Always check the type of node. This prevents situations such as selecting 32-bit rotate target instruction for a 64-bit node when 64-bit pattern is missing.

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llvm-svn: 41710
This commit is contained in:
Evan Cheng 2007-09-04 20:18:28 +00:00
parent 34e8027ee3
commit 0973e15ddd
1 changed files with 31 additions and 37 deletions
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68
utils/TableGen/DAGISelEmitter.cpp
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@ -3811,47 +3811,41 @@ void DAGISelEmitter::EmitInstructionSelector(std::ostream &OS) {
OpcodeVTMap.find(OpName);
std::vector<std::string> &OpVTs = OpVTI->second;
OS << " case " << OpName << ": {\n";
if (OpVTs.size() == 1) {
std::string &VTStr = OpVTs[0];
OS << " return Select_" << getLegalCName(OpName)
<< VTStr << "(N);\n";
} else {
// Keep track of whether we see a pattern that has an iPtr result.
bool HasPtrPattern = false;
bool HasDefaultPattern = false;
// Keep track of whether we see a pattern that has an iPtr result.
bool HasPtrPattern = false;
bool HasDefaultPattern = false;
OS << " switch (NVT) {\n";
for (unsigned i = 0, e = OpVTs.size(); i < e; ++i) {
std::string &VTStr = OpVTs[i];
if (VTStr.empty()) {
HasDefaultPattern = true;
continue;
}
OS << " switch (NVT) {\n";
for (unsigned i = 0, e = OpVTs.size(); i < e; ++i) {
std::string &VTStr = OpVTs[i];
if (VTStr.empty()) {
HasDefaultPattern = true;
continue;
}
// If this is a match on iPTR: don't emit it directly, we need special
// code.
if (VTStr == "_iPTR") {
HasPtrPattern = true;
continue;
}
OS << " case MVT::" << VTStr.substr(1) << ":\n"
<< " return Select_" << getLegalCName(OpName)
<< VTStr << "(N);\n";
// If this is a match on iPTR: don't emit it directly, we need special
// code.
if (VTStr == "_iPTR") {
HasPtrPattern = true;
continue;
}
OS << " default:\n";
// If there is an iPTR result version of this pattern, emit it here.
if (HasPtrPattern) {
OS << " if (NVT == TLI.getPointerTy())\n";
OS << " return Select_" << getLegalCName(OpName) <<"_iPTR(N);\n";
}
if (HasDefaultPattern) {
OS << " return Select_" << getLegalCName(OpName) << "(N);\n";
}
OS << " break;\n";
OS << " }\n";
OS << " break;\n";
OS << " case MVT::" << VTStr.substr(1) << ":\n"
<< " return Select_" << getLegalCName(OpName)
<< VTStr << "(N);\n";
}
OS << " default:\n";
// If there is an iPTR result version of this pattern, emit it here.
if (HasPtrPattern) {
OS << " if (NVT == TLI.getPointerTy())\n";
OS << " return Select_" << getLegalCName(OpName) <<"_iPTR(N);\n";
}
if (HasDefaultPattern) {
OS << " return Select_" << getLegalCName(OpName) << "(N);\n";
}
OS << " break;\n";
OS << " }\n";
OS << " break;\n";
OS << " }\n";
}