[SystemZ] Prevent Merging Bitcast with non-normal loads
Fixes PR32505.
Reviewers: uweigand, jonpa
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D31609
llvm-svn: 299552
diff --git a/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp b/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
index 5078acc..2db35ea 100644
--- a/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
@@ -2792,8 +2792,9 @@
// but we need this case for bitcasts that are created during lowering
// and which are then lowered themselves.
if (auto *LoadN = dyn_cast<LoadSDNode>(In))
- return DAG.getLoad(ResVT, DL, LoadN->getChain(), LoadN->getBasePtr(),
- LoadN->getMemOperand());
+ if (ISD::isNormalLoad(LoadN))
+ return DAG.getLoad(ResVT, DL, LoadN->getChain(), LoadN->getBasePtr(),
+ LoadN->getMemOperand());
if (InVT == MVT::i32 && ResVT == MVT::f32) {
SDValue In64;