diff options
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 69efae738af..3c13b611ce2 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -11973,9 +11973,11 @@ SDValue DAGCombiner::XformToShuffleWithZero(SDNode *N) { return SDValue(); } - // Let's see if the target supports this vector_shuffle. + // Let's see if the target supports this vector_shuffle and make sure + // we're not running after operation legalization where it may have + // custom lowered the vector shuffles. EVT RVT = RHS.getValueType(); - if (!TLI.isVectorClearMaskLegal(Indices, RVT)) + if (LegalOperations || !TLI.isVectorClearMaskLegal(Indices, RVT)) return SDValue(); // Return the new VECTOR_SHUFFLE node. |
