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Allow result node to be a simple leaf node. This enable bitconvert patterns

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like this:
def : Pat<(v4i32 (bitconvert (v4f32 VR128:$src))), (v4i32 VR128:$src)>;

llvm-svn: 26968
This commit is contained in:
Evan Cheng 2006-03-23 02:35:32 +00:00
parent 5f7cf963db
commit b632a1d0d5
1 changed files with 9 additions and 4 deletions
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13
utils/TableGen/DAGISelEmitter.cpp
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@ -1459,8 +1459,10 @@ void DAGISelEmitter::ParsePatterns() {
}
ResultNodeOperands.push_back(OpNode);
}
DstPattern = new TreePatternNode(Result->getOnlyTree()->getOperator(),
ResultNodeOperands);
DstPattern = Result->getOnlyTree();
if (!DstPattern->isLeaf())
DstPattern = new TreePatternNode(DstPattern->getOperator(),
ResultNodeOperands);
DstPattern->setTypes(Result->getOnlyTree()->getExtTypes());
TreePattern Temp(Result->getRecord(), DstPattern, false, *this);
Temp.InferAllTypes();
@ -2191,7 +2193,6 @@ public:
EmitResultCode(TreePatternNode *N, bool LikeLeaf = false, bool isRoot = false) {
// This is something selected from the pattern we matched.
if (!N->getName().empty()) {
assert(!isRoot && "Root of pattern cannot be a leaf!");
std::string &Val = VariableMap[N->getName()];
assert(!Val.empty() &&
"Variable referenced but not defined and not caught earlier!");
@ -2276,13 +2277,17 @@ public:
emitCode("Tmp" + utostr(ResNo) + " = " + Val + ";");
else
emitCode("Select(Tmp" + utostr(ResNo) + ", " + Val + ");");
if (isRoot && N->isLeaf()) {
emitCode("Result = Tmp" + utostr(ResNo) + ";");
emitCode("return;");
}
}
// Add Tmp<ResNo> to VariableMap, so that we don't multiply select this
// value if used multiple times by this pattern result.
Val = "Tmp"+utostr(ResNo);
return std::make_pair(NumRes, ResNo);
}
if (N->isLeaf()) {
// If this is an explicit register reference, handle it.
if (DefInit *DI = dynamic_cast<DefInit*>(N->getLeafValue())) {