Add missing correctness check to ARMTargetLowering::ReconstructShuffle. Fixes PR11129.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142022 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index f1000de..6ead63f 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -4057,6 +4057,14 @@
// A shuffle can only come from building a vector from various
// elements of other vectors.
return SDValue();
+ } else if (V.getOperand(0).getValueType().getVectorElementType() !=
+ VT.getVectorElementType()) {
+ // This code doesn't know how to handle shuffles where the vector
+ // element types do not match (this happens because type legalization
+ // promotes the return type of EXTRACT_VECTOR_ELT).
+ // FIXME: It might be appropriate to extend this code to handle
+ // mismatched types.
+ return SDValue();
}
// Record this extraction against the appropriate vector if possible...