[LowerMatrixIntrinsics] writeFnName - don't dereference a dyn_cast<>. NFC.

dyn_cast<> can return null - use cast<> instead to assert the cast is valid before dereferencing the casted pointer.

Fixes static-analyzer null dereference warning.

diff --git a/llvm/lib/Transforms/Scalar/LowerMatrixIntrinsics.cpp b/llvm/lib/Transforms/Scalar/LowerMatrixIntrinsics.cpp
index 4e4097e..3777a84 100644 (file)
--- a/llvm/lib/Transforms/Scalar/LowerMatrixIntrinsics.cpp
+++ b/llvm/lib/Transforms/Scalar/LowerMatrixIntrinsics.cpp
@@ -1895,7 +1895,7 @@ public:
           write(Name);
           return;
         }
-        IntrinsicInst *II = dyn_cast<IntrinsicInst>(CI);
+        auto *II = cast<IntrinsicInst>(CI);
         write(Intrinsic::getBaseName(II->getIntrinsicID())
                   .drop_front(StringRef("llvm.matrix.").size()));
         write(".");