| // 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_$_", align 8 |
| // CHECK: [[DEST:%.*]] = getelementptr inbounds %struct._objc_super, ptr [[SUPER]], i32 0, i32 1 |
| // CHECK: store ptr [[METACLASS_REF]], ptr [[DEST]], align 8 |
| // CHECK: call void @objc_msgSendSuper2(ptr noundef [[SUPER]], ptr noundef {{%.*}}) |
| // CHECK: ret void |
| |
| - (void) anotherInstanceMethod { |
| [super instanceMethod]; |
| } |
| // CHECK-LABEL: define internal void @"\01-[Derived(MyCategory) anotherInstanceMethod]"(ptr noundef %self, ptr noundef %_cmd) #0 { |
| // CHECK-NEXT: entry: |
| // CHECK: [[SUPER:%.*]] = alloca %struct._objc_super, align 8 |
| // CHECK: [[CLASS_REF:%.*]] = call ptr @objc_loadClassref(ptr @"OBJC_CLASSLIST_SUP_REFS_$_.1") |
| // CHECK: [[DEST:%.*]] = getelementptr inbounds %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) } |