[PATCH] D60543: [clang] Update isDerivedFrom to support Objective-C classes 🔍

[Aaron Ballman via Phabricator via cfe-commits]

aaron.ballman accepted this revision.
aaron.ballman added a comment.

LGTM



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Comment at: clang/lib/ASTMatchers/ASTMatchFinder.cpp:820
+  llvm::DenseMap<const ObjCInterfaceDecl *,
+                 std::set<const ObjCCompatibleAliasDecl *>>
+      CompatibleAliases;
----------------
gribozavr wrote:
> `unordered_set`?
or `SmallPtrSet`?


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  https://reviews.llvm.org/D60543/new/

https://reviews.llvm.org/D60543