[clang] [Sema] Migrate away from PointerUnion::dyn_cast (NFC) (PR #124447)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Kazu Hirata (kazutakahirata)

<details>
<summary>Changes</summary>

Note that PointerUnion::dyn_cast has been soft deprecated in
PointerUnion.h:

  // FIXME: Replace the uses of is(), get() and dyn_cast() with
  //        isa&lt;T&gt;, cast&lt;T&gt; and the llvm::dyn_cast&lt;T&gt;

Literal migration would result in dyn_cast_if_present (see the
definition of PointerUnion::dyn_cast), but this patch uses dyn_cast
because we expect AnyFunc to be nonnull.


---
Full diff: https://github.com/llvm/llvm-project/pull/124447.diff


1 Files Affected:

- (modified) clang/lib/Sema/SemaAPINotes.cpp (+1-1) 


``````````diff
diff --git a/clang/lib/Sema/SemaAPINotes.cpp b/clang/lib/Sema/SemaAPINotes.cpp
index 4f79775bc5e913..b354bb7b06435f 100644
--- a/clang/lib/Sema/SemaAPINotes.cpp
+++ b/clang/lib/Sema/SemaAPINotes.cpp
@@ -478,7 +478,7 @@ static void ProcessAPINotes(Sema &S, FunctionOrMethod 
AnyFunc,
                             const api_notes::FunctionInfo &Info,
                             VersionedInfoMetadata Metadata) {
   // Find the declaration itself.
-  FunctionDecl *FD = AnyFunc.dyn_cast<FunctionDecl *>();
+  FunctionDecl *FD = dyn_cast<FunctionDecl *>(AnyFunc);
   Decl *D = FD;
   ObjCMethodDecl *MD = nullptr;
   if (!D) {

``````````

</details>


https://github.com/llvm/llvm-project/pull/124447
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