[AST] 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 IntegerType 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 IntegerType to be nonnull.

---

Full diff: https://github.com/llvm/llvm-project/pull/123156.diff

1 Files Affected:

• (modified) clang/include/clang/AST/Decl.h (+1-1)

diff --git a/clang/include/clang/AST/Decl.h b/clang/include/clang/AST/Decl.h
index 27a91a2d07210b..186a3e7fca59db 100644
--- a/clang/include/clang/AST/Decl.h
+++ b/clang/include/clang/AST/Decl.h
@@ -4021,7 +4021,7 @@ class EnumDecl : public TagDecl {
   QualType getIntegerType() const {
     if (!IntegerType)
       return QualType();
-    if (const Type *T = IntegerType.dyn_cast<const Type*>())
+    if (const Type *T = dyn_cast<const Type *>(IntegerType))
       return QualType(T, 0);
     return cast<TypeSourceInfo *>(IntegerType)->getType().getUnqualifiedType();
   }