Improve support for vector casts in LLVM IR and CodeGen.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54784 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index bdeffba..9682a2f 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -3146,6 +3146,10 @@
MVT VT = N->getValueType(0);
MVT EVT = N->getValueType(0);
+ // This transformation isn't valid for vector loads.
+ if (VT.isVector())
+ return SDValue();
+
// Special case: SIGN_EXTEND_INREG is basically truncating to EVT then
// extended to VT.
if (Opc == ISD::SIGN_EXTEND_INREG) {