[llvm] r372116 - [LoopVectorize] Don't dereference a dyn_cast result. NFCI.

[Simon Pilgrim via llvm-commits]

Author: rksimon
Date: Tue Sep 17 06:24:54 2019
New Revision: 372116

URL: http://llvm.org/viewvc/llvm-project?rev=372116&view=rev
Log:
[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.

Modified:
    llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp

Modified: llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp?rev=372116&r1=372115&r2=372116&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp (original)
+++ llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp Tue Sep 17 06:24:54 2019
@@ -4200,7 +4200,7 @@ void InnerLoopVectorizer::widenInstructi
   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.