[AArch64] AArch64StackTagging - Silence static analyzer dyn_cast<> null dereference...

The static analyzer is warning about potential null dereferences, but we should be able to use cast<> directly and if not assert will fire for us.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@372507 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/AArch64/AArch64StackTagging.cpp b/lib/Target/AArch64/AArch64StackTagging.cpp
index 4dfe743bafa8e37eb41153f3b034a3bdd03c76fc..5942f61ca74d7c12c8e1262189ff42406f2b1a5a 100644 (file)
--- a/lib/Target/AArch64/AArch64StackTagging.cpp
+++ b/lib/Target/AArch64/AArch64StackTagging.cpp
@@ -471,7 +471,7 @@ void AArch64StackTagging::alignAndPadAlloca(AllocaInfo &Info) {
       Info.AI->isArrayAllocation()
           ? ArrayType::get(
                 Info.AI->getAllocatedType(),
-                dyn_cast<ConstantInt>(Info.AI->getArraySize())->getZExtValue())
+                cast<ConstantInt>(Info.AI->getArraySize())->getZExtValue())
           : Info.AI->getAllocatedType();
   Type *PaddingType =
       ArrayType::get(Type::getInt8Ty(F->getContext()), AlignedSize - Size);