[clang] [CodeGen] Migrate away from PointerUnion::dyn_cast (NFC) (PR #123013)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang-codegen

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<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 Data to be nonnull.


---
Full diff: https://github.com/llvm/llvm-project/pull/123013.diff


1 Files Affected:

- (modified) clang/lib/CodeGen/CGOpenMPRuntime.cpp (+1-1) 


``````````diff
diff --git a/clang/lib/CodeGen/CGOpenMPRuntime.cpp b/clang/lib/CodeGen/CGOpenMPRuntime.cpp
index 244e3066f8fe41..ddcb04d53661d0 100644
--- a/clang/lib/CodeGen/CGOpenMPRuntime.cpp
+++ b/clang/lib/CodeGen/CGOpenMPRuntime.cpp
@@ -7768,7 +7768,7 @@ class MappableExprsHandler {
              &Data : RecordLayout) {
       if (Data.isNull())
         continue;
-      if (const auto *Base = Data.dyn_cast<const CXXRecordDecl *>())
+      if (const auto *Base = dyn_cast<const CXXRecordDecl *>(Data))
         getPlainLayout(Base, Layout, /*AsBase=*/true);
       else
         Layout.push_back(cast<const FieldDecl *>(Data));

``````````

</details>


https://github.com/llvm/llvm-project/pull/123013