[Sema] Migrate away from PointerUnion::dyn_cast (NFC)

[kazutakahirata]

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

// FIXME: Replace the uses of is(), get() and dyn_cast() with
// isa, cast and the llvm::dyn_cast

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 Entry to be nonnull.

[llvmbot]

@llvm/pr-subscribers-clang

Author: Kazu Hirata (kazutakahirata)

Changes

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 Entry to be nonnull.

---

Full diff: https://github.com/llvm/llvm-project/pull/125023.diff

1 Files Affected:

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

diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index 3cad9827fdab69..f7b8b192a206c3 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -19966,7 +19966,7 @@ static void CheckForDuplicateEnumValues(Sema &S, ArrayRef<Decl *> Elements,
       continue;
 
     DeclOrVector& Entry = Iter->second;
-    if (EnumConstantDecl *D = Entry.dyn_cast<EnumConstantDecl*>()) {
+    if (EnumConstantDecl *D = dyn_cast<EnumConstantDecl *>(Entry)) {
       // Ensure constants are different.
       if (D == ECD)
         continue;