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| author | Sanjay Patel <spatel@rotateright.com> | 2018-11-19 17:06:05 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2018-11-19 17:06:05 +0000 |
| commit | b25adf5edba0bfb487828600f4294702e695fdba (patch) | |
| tree | 188a8c0e05583ccb9346be2ff843f8b97134629e /llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | |
| parent | 22a04efcb0cfac222abfaec381406eff7e157ec6 (diff) | |
| download | bcm5719-llvm-b25adf5edba0bfb487828600f4294702e695fdba.tar.gz bcm5719-llvm-b25adf5edba0bfb487828600f4294702e695fdba.zip | |
[SelectionDAG] simplify vector select with undef operand(s)
llvm-svn: 347227
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 31589fe586b..5510d9a9dab 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -7816,9 +7816,8 @@ SDValue DAGCombiner::visitVSELECT(SDNode *N) { SDValue N2 = N->getOperand(2); SDLoc DL(N); - // fold (vselect C, X, X) -> X - if (N1 == N2) - return N1; + if (SDValue V = DAG.simplifySelect(N0, N1, N2)) + return V; // Canonicalize integer abs. // vselect (setg[te] X, 0), X, -X -> |
