llvm-project/clang/test/CodeGenObjC/tentative-cfconstantstring.m

// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s
// rdar://13598026

@interface NSObject @end

@class NSString;

int __CFConstantStringClassReference[24];

@interface Bar : NSObject
+(void)format:(NSString *)format,...;
@end

@interface Foo : NSObject
@end


static inline void _inlineFunction() {
    [Bar format:@" "];
}

@implementation Foo


+(NSString *)someMethod {
   return @"";
}

-(void)someMethod {
   _inlineFunction();
}
@end

// CHECK: @__CFConstantStringClassReference = common global [24 x i32] zeroinitializer, align 16
// CHECK: @_unnamed_cfstring_{{.*}} = private constant %struct.NSConstantString { i32* getelementptr inbounds ([24 x i32]* @__CFConstantStringClassReference, i32 0, i32 0)

// CHECK: define internal void @_inlineFunction()
// CHECK:  [[ZERO:%.*]] = load %struct._class_t** @"\01L_OBJC_CLASSLIST_REFERENCES_
// CHECK-NEXT:   [[ONE:%.*]] = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_"
// CHECK-NEXT:   [[TWO:%.*]] = bitcast %struct._class_t* [[ZERO]] to i8*
// CHECK-NEXT:   call{{.*}}@objc_msgSend{{.*}}(i8* [[TWO]], i8* [[ONE]], [[ZERO]]* bitcast (%struct.NSConstantString* @_unnamed_cfstring_{{.*}}
// CHECK-NEXT:   ret void