[llvm] [Support] Extend ExtensibleRTTI utility to support basic multiple inheritance. (PR #112643)

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:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

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git-clang-format --diff 90767bc41bd69fb4b9ac01a8420ef58bbbaeab7c 0953277f443fdfbefae8cf636c4593747d4905b6 --extensions cpp,h -- llvm/include/llvm/Support/ExtensibleRTTI.h llvm/unittests/Support/ExtensibleRTTITest.cpp
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View the diff from clang-format here.
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diff --git a/llvm/include/llvm/Support/ExtensibleRTTI.h b/llvm/include/llvm/Support/ExtensibleRTTI.h
index 6b8f5efd6b..a0b700891a 100644
--- a/llvm/include/llvm/Support/ExtensibleRTTI.h
+++ b/llvm/include/llvm/Support/ExtensibleRTTI.h
@@ -117,19 +117,18 @@ public:
   const void *dynamicClassID() const override { return &ThisT::ID; }
 
   /// Check whether this instance is a subclass of QueryT.
-  template <typename QueryT>
-  bool isA() const { return isA(QueryT::classID()); }
+  template <typename QueryT> bool isA() const { return isA(QueryT::classID()); }
 
   bool isA(const void *const ClassID) const override {
     return ClassID == classID() || parentsAreA<ParentTs...>(ClassID);
   }
 
-  template <typename T>
-  static bool classof(const T *R) { return R->template isA<ThisT>(); }
-private:
+  template <typename T> static bool classof(const T *R) {
+    return R->template isA<ThisT>();
+  }
 
-  template <typename T>
-  bool parentsAreA(const void *const ClassID) const {
+private:
+  template <typename T> bool parentsAreA(const void *const ClassID) const {
     return T::isA(ClassID);
   }
 
diff --git a/llvm/unittests/Support/ExtensibleRTTITest.cpp b/llvm/unittests/Support/ExtensibleRTTITest.cpp
index 4d78106690..08fc6a43d8 100644
--- a/llvm/unittests/Support/ExtensibleRTTITest.cpp
+++ b/llvm/unittests/Support/ExtensibleRTTITest.cpp
@@ -37,8 +37,8 @@ public:
 };
 
 class MyMultipleInheritanceType
-  : public RTTIExtends<MyMultipleInheritanceType,
-                       MyDerivedType, MyOtherDerivedType> {
+    : public RTTIExtends<MyMultipleInheritanceType, MyDerivedType,
+                         MyOtherDerivedType> {
 public:
   static char ID;
 };

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https://github.com/llvm/llvm-project/pull/112643