Prefer SmallVector::append/insert over push_back loops.
Same functionality, but hoists the vector growth out of the loop.
llvm-svn: 229500
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index c4a1a1f..92164e9 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -6913,8 +6913,7 @@
for (unsigned i = 0, e = BV->getNumOperands(); i != e; ++i) {
if (BV->getOperand(i).getOpcode() == ISD::UNDEF) {
- for (unsigned j = 0; j != NumOutputsPerInput; ++j)
- Ops.push_back(DAG.getUNDEF(DstEltVT));
+ Ops.append(NumOutputsPerInput, DAG.getUNDEF(DstEltVT));
continue;
}
@@ -11754,10 +11753,7 @@
// constants directly.
const SDValue &Splatted = V->getOperand(SVN->getSplatIndex());
if (isa<ConstantSDNode>(Splatted) || isa<ConstantFPSDNode>(Splatted)) {
- SmallVector<SDValue, 8> Ops;
- for (unsigned i = 0; i != NumElts; ++i) {
- Ops.push_back(Splatted);
- }
+ SmallVector<SDValue, 8> Ops(NumElts, Splatted);
SDValue NewBV = DAG.getNode(ISD::BUILD_VECTOR, SDLoc(N),
V->getValueType(0), Ops);