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Infer element types for shuffle masks

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llvm-svn: 27456
This commit is contained in:
Chris Lattner 2006-04-06 20:36:51 +00:00
parent 7f54d730f1
commit 9f8d5b538e
1 changed files with 20 additions and 0 deletions
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20
utils/TableGen/DAGISelEmitter.cpp
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@ -672,6 +672,26 @@ bool TreePatternNode::ApplyTypeConstraints(TreePattern &TP, bool NotRegisters) {
// must have void types.
if (NI.getNumResults() == 0)
MadeChange |= UpdateNodeType(MVT::isVoid, TP);
// If this is a vector_shuffle operation, apply types to the build_vector
// operation. The types of the integers don't matter, but this ensures they
// won't get checked.
if (getOperator()->getName() == "vector_shuffle" &&
getChild(2)->getOperator()->getName() == "build_vector") {
TreePatternNode *BV = getChild(2);
const std::vector<MVT::ValueType> &LegalVTs
= ISE.getTargetInfo().getLegalValueTypes();
MVT::ValueType LegalIntVT = MVT::Other;
for (unsigned i = 0, e = LegalVTs.size(); i != e; ++i)
if (MVT::isInteger(LegalVTs[i]) && !MVT::isVector(LegalVTs[i])) {
LegalIntVT = LegalVTs[i];
break;
}
assert(LegalIntVT != MVT::Other && "No legal integer VT?");
for (unsigned i = 0, e = BV->getNumChildren(); i != e; ++i)
MadeChange |= BV->getChild(i)->UpdateNodeType(LegalIntVT, TP);
}
return MadeChange;
} else if (getOperator()->isSubClassOf("Instruction")) {
const DAGInstruction &Inst = ISE.getInstruction(getOperator());