[Hexagon] Do not promote terminator instructions in Hexagon loop idioms

llvm-svn: 351369

1 files changed, 3 insertions, 1 deletions

diff --git a/llvm/lib/Target/Hexagon/HexagonLoopIdiomRecognition.cpp b/llvm/lib/Target/Hexagon/HexagonLoopIdiomRecognition.cpp
index 985f41f3a7d..e828a48b890 100644
--- a/llvm/lib/Target/Hexagon/HexagonLoopIdiomRecognition.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonLoopIdiomRecognition.cpp
@@ -1001,6 +1001,7 @@ bool PolynomialMultiplyRecognize::isPromotableTo(Value *Val,
 void PolynomialMultiplyRecognize::promoteTo(Instruction *In,
       IntegerType *DestTy, BasicBlock *LoopB) {
   Type *OrigTy = In->getType();
+  assert(!OrigTy->isVoidTy() && "Invalid instruction to promote");
 
   // Leave boolean values alone.
   if (!In->getType()->isIntegerTy(1))
@@ -1081,7 +1082,8 @@ bool PolynomialMultiplyRecognize::promoteTypes(BasicBlock *LoopB,
   std::transform(LoopB->begin(), LoopB->end(), std::back_inserter(LoopIns),
                  [](Instruction &In) { return &In; });
   for (Instruction *In : LoopIns)
-    promoteTo(In, DestTy, LoopB);
+    if (!In->isTerminator())
+      promoteTo(In, DestTy, LoopB);
 
   // Fix up the PHI nodes in the exit block.
   Instruction *EndI = ExitB->getFirstNonPHI();