diff options
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 4592971336..5a6077a3ca 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -1103,7 +1103,7 @@ SDOperand DAGCombiner::visitSUB(SDNode *N) { // fold (sub x, x) -> 0 if (N0 == N1) { - if (!AfterLegalize || !MVT::isVector(VT)) + if (AfterLegalize && ISD::isBuildVectorAllZeros(N0.Val)) // For example, zero vectors might be normalized to a particular vector // type to ensure they are CSE'd. Avoid issuing zero vector nodes of // *unexpected* type after legalization. |