[clang] [AST] Migrate away from PointerUnion::dyn_cast (NFC) (PR #123283)

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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 Source to be nonnull.


---
Full diff: https://github.com/llvm/llvm-project/pull/123283.diff


1 Files Affected:

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


``````````diff
diff --git a/clang/lib/AST/ByteCode/EvaluationResult.cpp 
b/clang/lib/AST/ByteCode/EvaluationResult.cpp
index 0ce8f15ea9127c..d603e08c7bb4d4 100644
--- a/clang/lib/AST/ByteCode/EvaluationResult.cpp
+++ b/clang/lib/AST/ByteCode/EvaluationResult.cpp
@@ -160,9 +160,9 @@ bool EvaluationResult::checkFullyInitialized(InterpState &S,
     return true;
 
   SourceLocation InitLoc;
-  if (const auto *D = Source.dyn_cast<const Decl *>())
+  if (const auto *D = dyn_cast<const Decl *>(Source))
     InitLoc = cast<VarDecl>(D)->getAnyInitializer()->getExprLoc();
-  else if (const auto *E = Source.dyn_cast<const Expr *>())
+  else if (const auto *E = dyn_cast<const Expr *>(Source))
     InitLoc = E->getExprLoc();
 
   if (const Record *R = Ptr.getRecord())

``````````

</details>


https://github.com/llvm/llvm-project/pull/123283
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