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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-07-19 13:39:58 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-07-19 13:39:58 +0000 |
| commit | c77e2622607689a4c813d875e8233cb8ebeeb6a7 (patch) | |
| tree | a239ef37bd1ded95d63b3570370175926c749e7a /llvm/lib/CodeGen/SelectionDAG | |
| parent | 4c5fd9cd7f758f563eeb30cbe23708074d8f80b2 (diff) | |
| download | bcm5719-llvm-c77e2622607689a4c813d875e8233cb8ebeeb6a7.tar.gz bcm5719-llvm-c77e2622607689a4c813d875e8233cb8ebeeb6a7.zip | |
{DAGCombine] Convert (Val & Mask) == Mask to Mask.isSubsetof(Val). NFCI.
llvm-svn: 308460
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index d5d3f7a61a9..847d6d8e677 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -7854,7 +7854,7 @@ SDValue DAGCombiner::GetDemandedBits(SDValue V, const APInt &Mask) { case ISD::AND: { // X & -1 -> X (ignoring bits which aren't demanded). ConstantSDNode *AndVal = isConstOrConstSplat(V.getOperand(1)); - if (AndVal && (AndVal->getAPIntValue() & Mask) == Mask) + if (AndVal && Mask.isSubsetOf(AndVal->getAPIntValue())) return V.getOperand(0); break; } |
