[SystemZ] Bugfix in combineSTORE().
Remember to check if store is truncating before calling
combineTruncateExtract().
Review: Ulrich Weigand
llvm-svn: 333262
diff --git a/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp b/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
index 14a9638..e69afd8 100644
--- a/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
@@ -5357,7 +5357,7 @@
// for the extraction to be done on a vMiN value, so that we can use VSTE.
// If X has wider elements then convert it to:
// (truncstoreiN (extract_vector_elt (bitcast X), Y2), Z).
- if (MemVT.isInteger()) {
+ if (MemVT.isInteger() && SN->isTruncatingStore()) {
if (SDValue Value =
combineTruncateExtract(SDLoc(N), MemVT, SN->getValue(), DCI)) {
DCI.AddToWorklist(Value.getNode());