[clang] [Index] Migrate away from PointerUnion::dyn_cast (NFC) (PR #124389)

[Kazu Hirata via cfe-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/124389

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 DclInfo.DeclOrMacro to be nonnull.


>From 429b5559bed8e59b9317fae1024abecdc8bfc981 Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Fri, 24 Jan 2025 09:06:54 -0800
Subject: [PATCH] [Index] Migrate away from PointerUnion::dyn_cast (NFC)

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 DclInfo.DeclOrMacro to be nonnull.
---
 clang/lib/Index/FileIndexRecord.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clang/lib/Index/FileIndexRecord.cpp b/clang/lib/Index/FileIndexRecord.cpp
index 449c33637eb7e8..cf40a596f50943 100644
--- a/clang/lib/Index/FileIndexRecord.cpp
+++ b/clang/lib/Index/FileIndexRecord.cpp
@@ -55,7 +55,7 @@ void FileIndexRecord::removeHeaderGuardMacros() {
 void FileIndexRecord::print(llvm::raw_ostream &OS, SourceManager &SM) const {
   OS << "DECLS BEGIN ---\n";
   for (auto &DclInfo : Decls) {
-    if (const auto *D = DclInfo.DeclOrMacro.dyn_cast<const Decl *>()) {
+    if (const auto *D = dyn_cast<const Decl *>(DclInfo.DeclOrMacro)) {
       SourceLocation Loc = SM.getFileLoc(D->getLocation());
       PresumedLoc PLoc = SM.getPresumedLoc(Loc);
       OS << llvm::sys::path::filename(PLoc.getFilename()) << ':'