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// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -Wno-objc-root-class -emit-llvm -o - %s | FileCheck %s
// -- classref for the message send in main()
//
// The class is declared with objc_class_stub, so LSB of the class pointer
// must be set to 1.
//
// CHECK-LABEL: @"OBJC_CLASSLIST_REFERENCES_$_" = internal global ptr getelementptr (i8, ptr @"OBJC_CLASS_$_Base", i32 1), align 8
// -- classref for the super message send in anotherClassMethod()
//
// Metaclasses do not use the "stub" mechanism and are referenced statically.
//
// CHECK-LABEL: @"OBJC_CLASSLIST_SUP_REFS_$_" = private global ptr @"OBJC_METACLASS_$_Derived", section "__DATA,__objc_superrefs,regular,no_dead_strip", align 8
// -- classref for the super message send in anotherInstanceMethod()
//
// The class is declared with objc_class_stub, so LSB of the class pointer
// must be set to 1.
//
// CHECK-LABEL: @"OBJC_CLASSLIST_SUP_REFS_$_.1" = private global ptr getelementptr (i8, ptr @"OBJC_CLASS_$_Derived", i32 1), section "__DATA,__objc_superrefs,regular,no_dead_strip", align 8
// -- category list for class stubs goes in __objc_catlist2.
//
// CHECK-LABEL: @"OBJC_LABEL_STUB_CATEGORY_$" = private global [1 x ptr] [ptr @"_OBJC_$_CATEGORY_Derived_$_MyCategory"], section "__DATA,__objc_catlist2,regular,no_dead_strip", align 8
__attribute__((objc_class_stub))
__attribute__((objc_subclassing_restricted))
@interface Base
+ (void) classMethod;
- (void) instanceMethod;
@end
__attribute__((objc_class_stub))
__attribute__((objc_subclassing_restricted))
@interface Derived : Base
@end
int main(void) {
[Base classMethod];
}
// CHECK-LABEL: define{{.*}} i32 @main()
// CHECK-NEXT: entry:
// CHECK-NEXT: [[CLASS:%.*]] = call ptr @objc_loadClassref(ptr @"OBJC_CLASSLIST_REFERENCES_$_")
// CHECK-NEXT: [[SELECTOR:%.*]] = load ptr, ptr @OBJC_SELECTOR_REFERENCES_
// CHECK-NEXT: call void @objc_msgSend(ptr noundef [[CLASS]], ptr noundef [[SELECTOR]])
// CHECK-NEXT: ret i32 0
// CHECK-LABEL: declare extern_weak ptr @objc_loadClassref(ptr)
// CHECK-SAME: [[ATTRLIST:#.*]]
@implementation Derived (MyCategory)
+ (void) anotherClassMethod {
[super classMethod];
}
// CHECK-LABEL: define internal void @"\01+[Derived(MyCategory) anotherClassMethod]"(ptr noundef %self, ptr noundef %_cmd) #0 {
// CHECK-NEXT: entry:
// CHECK: [[SUPER:%.*]] = alloca %struct._objc_super, align 8
// CHECK: [[METACLASS_REF:%.*]] = load ptr, ptr @"OBJC_CLASSLIST_SUP_REFS_$_", align 8
// CHECK: [[DEST:%.*]] = getelementptr inbounds nuw %struct._objc_super, ptr [[SUPER]], i32 0, i32 1
// CHECK: store ptr [[METACLASS_REF]], ptr [[DEST]], align 8
// CHECK: call void @objc_msgSendSuper2(ptr noundef [[SUPER]], ptr noundef {{%.*}})
// CHECK: ret void
- (void) anotherInstanceMethod {
[super instanceMethod];
}
// CHECK-LABEL: define internal void @"\01-[Derived(MyCategory) anotherInstanceMethod]"(ptr noundef %self, ptr noundef %_cmd) #0 {
// CHECK-NEXT: entry:
// CHECK: [[SUPER:%.*]] = alloca %struct._objc_super, align 8
// CHECK: [[CLASS_REF:%.*]] = call ptr @objc_loadClassref(ptr @"OBJC_CLASSLIST_SUP_REFS_$_.1")
// CHECK: [[DEST:%.*]] = getelementptr inbounds nuw %struct._objc_super, ptr [[SUPER]], i32 0, i32 1
// CHECK: store ptr [[CLASS_REF]], ptr [[DEST]], align 8
// CHECK: call void @objc_msgSendSuper2(ptr noundef [[SUPER]], ptr noundef {{%.*}})
// CHECK: ret void
@end
// -- calls to objc_loadClassRef() are readnone
// CHECK: attributes [[ATTRLIST]] = { nounwind nonlazybind memory(none) }
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