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DAGCombiner::visitINSERT_VECTOR_ELT - pull out repeated VT.getVectorNumElements(). NFCI. 

llvm-svn: 348494
This commit is contained in:
Simon Pilgrim 2018-12-06 15:39:25 +00:00
parent 9c9067316b
commit 105a366254
1 changed files with 4 additions and 3 deletions
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7
llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -15360,6 +15360,7 @@ SDValue DAGCombiner::visitINSERT_VECTOR_ELT(SDNode *N) {
return InVec;
EVT VT = InVec.getValueType();
unsigned NumElts = VT.getVectorNumElements();
// Remove redundant insertions:
// (insert_vector_elt x (extract_vector_elt x idx) idx) -> x
@ -15372,7 +15373,7 @@ SDValue DAGCombiner::visitINSERT_VECTOR_ELT(SDNode *N) {
// If this is variable insert to undef vector, it might be better to splat:
// inselt undef, InVal, EltNo --> build_vector < InVal, InVal, ... >
if (InVec.isUndef() && TLI.shouldSplatInsEltVarIndex(VT)) {
SmallVector<SDValue, 8> Ops(VT.getVectorNumElements(), InVal);
SmallVector<SDValue, 8> Ops(NumElts, InVal);
return DAG.getBuildVector(VT, DL, Ops);
}
return SDValue();
@ -15417,11 +15418,11 @@ SDValue DAGCombiner::visitINSERT_VECTOR_ELT(SDNode *N) {
Ops.append(InVec.getNode()->op_begin(),
InVec.getNode()->op_end());
} else if (InVec.isUndef()) {
unsigned NElts = VT.getVectorNumElements();
Ops.append(NElts, DAG.getUNDEF(InVal.getValueType()));
Ops.append(NumElts, DAG.getUNDEF(InVal.getValueType()));
} else {
return SDValue();
}
assert(Ops.size() == NumElts && "Unexpected vector size");
// Insert the element
if (Elt < Ops.size()) {