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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2016-10-25 22:01:09 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2016-10-25 22:01:09 +0000 |
| commit | de86241a097414640d1d410e68ac3287c24d9810 (patch) | |
| tree | 053bd989732327536bb72d99482d7940169c040c /llvm/lib | |
| parent | 33308f92ebef0a0848997f912659c50ddf647383 (diff) | |
| download | bcm5719-llvm-de86241a097414640d1d410e68ac3287c24d9810.tar.gz bcm5719-llvm-de86241a097414640d1d410e68ac3287c24d9810.zip | |
[DAGCombiner] Enable (urem x, (shl pow2, y)) -> (and x, (add (shl pow2, y), -1)) combine for splatted vectors
llvm-svn: 285129
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index f8953f0fb49..81fb69f517f 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -2482,9 +2482,9 @@ SDValue DAGCombiner::visitREM(SDNode *N) { } // fold (urem x, (shl pow2, y)) -> (and x, (add (shl pow2, y), -1)) if (N1.getOpcode() == ISD::SHL) { - ConstantSDNode *SHC = getAsNonOpaqueConstant(N1.getOperand(0)); - if (SHC && SHC->getAPIntValue().isPowerOf2()) { - APInt NegOne = APInt::getAllOnesValue(VT.getSizeInBits()); + ConstantSDNode *SHC = isConstOrConstSplat(N1.getOperand(0)); + if (SHC && !SHC->isOpaque() && SHC->getAPIntValue().isPowerOf2()) { + APInt NegOne = APInt::getAllOnesValue(VT.getScalarSizeInBits()); SDValue Add = DAG.getNode(ISD::ADD, DL, VT, N1, DAG.getConstant(NegOne, DL, VT)); AddToWorklist(Add.getNode()); |
