[clang] [AST] Migrate away from PointerUnion::dyn_cast (NFC) (PR #125022)

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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<T>, cast<T> and the llvm::dyn_cast<T>

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 C to be nonnull.


---
Full diff: https://github.com/llvm/llvm-project/pull/125022.diff


1 Files Affected:

- (modified) clang/lib/AST/TextNodeDumper.cpp (+2-2) 


``````````diff
diff --git a/clang/lib/AST/TextNodeDumper.cpp b/clang/lib/AST/TextNodeDumper.cpp
index a57cba95974822..bbb31a1e8d3f5c 100644
--- a/clang/lib/AST/TextNodeDumper.cpp
+++ b/clang/lib/AST/TextNodeDumper.cpp
@@ -958,9 +958,9 @@ void TextNodeDumper::dumpAccessSpecifier(AccessSpecifier AS) {
 
 void TextNodeDumper::dumpCleanupObject(
     const ExprWithCleanups::CleanupObject &C) {
-  if (auto *BD = C.dyn_cast<BlockDecl *>())
+  if (auto *BD = dyn_cast<BlockDecl *>(C))
     dumpDeclRef(BD, "cleanup");
-  else if (auto *CLE = C.dyn_cast<CompoundLiteralExpr *>())
+  else if (auto *CLE = dyn_cast<CompoundLiteralExpr *>(C))
     AddChild([=] {
       OS << "cleanup ";
       {

``````````

</details>


https://github.com/llvm/llvm-project/pull/125022