llvm-project/clang/test/CodeGenObjC/category-super-class-meth.m

// RUN: clang-cc -fnext-runtime -emit-llvm -o %t %s

@interface BASE
+ (int) BaseMeth;
@end

@interface Child: BASE
@end

@interface Child (Categ)
+ (int) flushCache2;
@end

@implementation Child  @end

@implementation Child (Categ)
+ (int) flushCache2 { [super BaseMeth]; }
@end