Do not apply the transformation if the target does not support DestTy natively.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55433 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index 19095a6..9c1a953 100644
--- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -1735,8 +1735,15 @@
DestTy = UCast->getDestTy();
else if (SIToFPInst *SCast = dyn_cast<SIToFPInst>(CandidateUI->User))
DestTy = SCast->getDestTy();
- if (!DestTy) continue;
-
+ if (!DestTy) continue;
+
+ if (TLI) {
+ /* If target does not support DestTy natively then do not apply
+ this transformation. */
+ MVT DVT = TLI->getValueType(DestTy);
+ if (!TLI->isTypeLegal(DVT)) continue;
+ }
+
PHINode *PH = dyn_cast<PHINode>(ShadowUse->getOperand(0));
if (!PH) continue;
if (PH->getNumIncomingValues() != 2) continue;