[LoopVectorize] Don't dereference a dyn_cast result. NFCI.

The static analyzer is warning about potential null dereferences of dyn_cast<> results, we can use cast<> directly as we know that these cases should all be CastInst, which is why its working atm and anyway cast<> will assert if they aren't.

llvm-svn: 372116

diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
index 549a24c..9f583ca 100644 (file)
--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -4200,7 +4200,7 @@ void InnerLoopVectorizer::widenInstruction(Instruction &I) {
   case Instruction::Trunc:
   case Instruction::FPTrunc:
   case Instruction::BitCast: {
-    auto *CI = dyn_cast<CastInst>(&I);
+    auto *CI = cast<CastInst>(&I);
     setDebugLocFromInst(Builder, CI);
 
     /// Vectorize casts.