[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 DeclOrIterator 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 DeclOrIterator to be nonnull.

---

Full diff: https://github.com/llvm/llvm-project/pull/124391.diff

1 Files Affected:

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

diff --git a/clang/lib/Sema/SemaCodeComplete.cpp b/clang/lib/Sema/SemaCodeComplete.cpp
index 58f3efbe0daf89..bc0f6a9435f958 100644
--- a/clang/lib/Sema/SemaCodeComplete.cpp
+++ b/clang/lib/Sema/SemaCodeComplete.cpp
@@ -678,7 +678,7 @@ class ResultBuilder::ShadowMapEntry::iterator {
   }*/
 
   reference operator*() const {
-    if (const NamedDecl *ND = DeclOrIterator.dyn_cast<const NamedDecl *>())
+    if (const NamedDecl *ND = dyn_cast<const NamedDecl *>(DeclOrIterator))
       return reference(ND, SingleDeclIndex);
 
     return *cast<const DeclIndexPair *>(DeclOrIterator);