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-rw-r--r--llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 8cab6aa..d353dc2 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -15188,6 +15188,10 @@ SDValue DAGCombiner::visitCONCAT_VECTORS(SDNode *N) {
if (!SclTy.isFloatingPoint() && !SclTy.isInteger())
return SDValue();
+ // Bail out if the vector size is not a multiple of the scalar size.
+ if (VT.getSizeInBits() % SclTy.getSizeInBits())
+ return SDValue();
+
unsigned VNTNumElms = VT.getSizeInBits() / SclTy.getSizeInBits();
if (VNTNumElms < 2)
return SDValue();