diff options
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 22270968e3..17386b74e3 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -8629,9 +8629,9 @@ SDValue DAGCombiner::visitEXTRACT_SUBVECTOR(SDNode* N) { // (extract_subvec (concat V1, V2, ...), i) // Into: // Vi if possible - for (unsigned i = 0, e = V->getNumOperands(); i != e; ++i) - if (V->getOperand(i).getValueType() != NVT) - return SDValue(); + // Only operand 0 is checked as 'concat' assumes all inputs of the same type. + if (V->getOperand(0).getValueType() != NVT) + return SDValue(); unsigned Idx = dyn_cast<ConstantSDNode>(N->getOperand(1))->getZExtValue(); unsigned NumElems = NVT.getVectorNumElements(); assert((Idx % NumElems) == 0 && |