[llvm] 7a97eeb - [Coroutines] checkAsyncFuncPointer - use cast<> instead of dyn_cast<> for dereferenced pointer. NFCI.

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2021-01-05T10:31:45Z
New Revision: 7a97eeb197a8023acbb800d40b3bb852fc2f5d60

URL: https://github.com/llvm/llvm-project/commit/7a97eeb197a8023acbb800d40b3bb852fc2f5d60
DIFF: https://github.com/llvm/llvm-project/commit/7a97eeb197a8023acbb800d40b3bb852fc2f5d60.diff

LOG: [Coroutines] checkAsyncFuncPointer - use cast<> instead of dyn_cast<> for dereferenced pointer. NFCI.

We're immediately dereferencing the casted pointer, so use cast<> which will assert instead of dyn_cast<> which can return null.

Fixes static analyzer warning.

Added: 
    

Modified: 
    llvm/lib/Transforms/Coroutines/Coroutines.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Coroutines/Coroutines.cpp b/llvm/lib/Transforms/Coroutines/Coroutines.cpp
index f0095a649b0c..6699a5c46313 100644
--- a/llvm/lib/Transforms/Coroutines/Coroutines.cpp
+++ b/llvm/lib/Transforms/Coroutines/Coroutines.cpp
@@ -676,8 +676,8 @@ static void checkAsyncFuncPointer(const Instruction *I, Value *V) {
   if (!AsyncFuncPtrAddr)
     fail(I, "llvm.coro.id.async async function pointer not a global", V);
 
-  auto *StructTy = dyn_cast<StructType>(
-      AsyncFuncPtrAddr->getType()->getPointerElementType());
+  auto *StructTy =
+      cast<StructType>(AsyncFuncPtrAddr->getType()->getPointerElementType());
   if (StructTy->isOpaque() || !StructTy->isPacked() ||
       StructTy->getNumElements() != 2 ||
       !StructTy->getElementType(0)->isIntegerTy(32) ||