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[DAGCombiner] Added CTPOP vector constant folding support.

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Added tests to the existing SSE/AVX test files.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239252 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Simon Pilgrim
2015-06-07 15:37:14 +00:00
parent aa8479458e
commit 43421abda8
4 changed files with 95 additions and 2 deletions
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2
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@@ -4809,7 +4809,7 @@ SDValue DAGCombiner::visitCTPOP(SDNode *N) {
EVT VT = N->getValueType(0);
// fold (ctpop c1) -> c2
if (isa<ConstantSDNode>(N0))
if (isConstantIntBuildVectorOrConstantInt(N0))
return DAG.getNode(ISD::CTPOP, SDLoc(N), VT, N0);
return SDValue();
}