[clang] [CodeGen] Migrate away from PointerUnion::dyn_cast (NFC) (PR #123157)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

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/123157.diff


1 Files Affected:

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


``````````diff
diff --git a/clang/lib/CodeGen/ConstantInitBuilder.cpp b/clang/lib/CodeGen/ConstantInitBuilder.cpp
index ddbf3ef743370b..ce1fe137c1919b 100644
--- a/clang/lib/CodeGen/ConstantInitBuilder.cpp
+++ b/clang/lib/CodeGen/ConstantInitBuilder.cpp
@@ -29,7 +29,7 @@ llvm::Type *ConstantInitFuture::getType() const {
 
 void ConstantInitFuture::abandon() {
   assert(Data && "abandoning null future");
-  if (auto builder = Data.dyn_cast<ConstantInitBuilderBase*>()) {
+  if (auto *builder = dyn_cast<ConstantInitBuilderBase *>(Data)) {
     builder->abandon(0);
   }
   Data = nullptr;

``````````

</details>


https://github.com/llvm/llvm-project/pull/123157