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85 lines
4.1 KiB
85 lines
4.1 KiB
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -Wno-objc-root-class -emit-llvm -o - %s | FileCheck %s
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// -- classref for the message send in main()
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//
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// The class is declared with objc_class_stub, so LSB of the class pointer
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// must be set to 1.
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//
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// CHECK-LABEL: @"OBJC_CLASSLIST_REFERENCES_$_" = internal global i8* getelementptr (i8, i8* bitcast (%struct._class_t* @"OBJC_CLASS_$_Base" to i8*), i32 1), align 8
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// -- classref for the super message send in anotherClassMethod()
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//
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// Metaclasses do not use the "stub" mechanism and are referenced statically.
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//
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// CHECK-LABEL: @"OBJC_CLASSLIST_SUP_REFS_$_" = private global %struct._class_t* @"OBJC_METACLASS_$_Derived", section "__DATA,__objc_superrefs,regular,no_dead_strip", align 8
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// -- classref for the super message send in anotherInstanceMethod()
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//
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// The class is declared with objc_class_stub, so LSB of the class pointer
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// must be set to 1.
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//
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// CHECK-LABEL: @"OBJC_CLASSLIST_SUP_REFS_$_.1" = private global i8* getelementptr (i8, i8* bitcast (%struct._class_t* @"OBJC_CLASS_$_Derived" to i8*), i32 1), section "__DATA,__objc_superrefs,regular,no_dead_strip", align 8
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// -- category list for class stubs goes in __objc_catlist2.
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//
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// CHECK-LABEL: @"OBJC_LABEL_STUB_CATEGORY_$" = private global [1 x i8*] [i8* bitcast (%struct._category_t* @"_OBJC_$_CATEGORY_Derived_$_MyCategory" to i8*)], section "__DATA,__objc_catlist2,regular,no_dead_strip", align 8
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__attribute__((objc_class_stub))
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__attribute__((objc_subclassing_restricted))
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@interface Base
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+ (void) classMethod;
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- (void) instanceMethod;
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@end
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__attribute__((objc_class_stub))
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__attribute__((objc_subclassing_restricted))
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@interface Derived : Base
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@end
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int main() {
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[Base classMethod];
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}
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// CHECK-LABEL: define i32 @main()
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[CLASS:%.*]] = call %struct._class_t* @objc_loadClassref(i8** @"OBJC_CLASSLIST_REFERENCES_$_")
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// CHECK-NEXT: [[SELECTOR:%.*]] = load i8*, i8** @OBJC_SELECTOR_REFERENCES_
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// CHECK-NEXT: [[RECEIVER:%.*]] = bitcast %struct._class_t* [[CLASS]] to i8*
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// CHECK-NEXT: call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*)*)(i8* [[RECEIVER]], i8* [[SELECTOR]])
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// CHECK-NEXT: ret i32 0
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// CHECK-LABEL: declare extern_weak %struct._class_t* @objc_loadClassref(i8**)
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// CHECK-SAME: [[ATTRLIST:#.*]]
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@implementation Derived (MyCategory)
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+ (void) anotherClassMethod {
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[super classMethod];
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}
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// CHECK-LABEL: define internal void @"\01+[Derived(MyCategory) anotherClassMethod]"(i8* %self, i8* %_cmd) #0 {
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// CHECK-NEXT: entry:
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// CHECK: [[SUPER:%.*]] = alloca %struct._objc_super, align 8
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// CHECK: [[METACLASS_REF:%.*]] = load %struct._class_t*, %struct._class_t** @"OBJC_CLASSLIST_SUP_REFS_$_", align 8
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// CHECK: [[CAST_METACLASS_REF:%.*]] = bitcast %struct._class_t* [[METACLASS_REF]] to i8*
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// CHECK: [[DEST:%.*]] = getelementptr inbounds %struct._objc_super, %struct._objc_super* [[SUPER]], i32 0, i32 1
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// CHECK: store i8* [[CAST_METACLASS_REF]], i8** [[DEST]], align 8
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// CHECK: call void bitcast (i8* (%struct._objc_super*, i8*, ...)* @objc_msgSendSuper2 to void (%struct._objc_super*, i8*)*)(%struct._objc_super* [[SUPER]], i8* {{%.*}})
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// CHECK: ret void
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- (void) anotherInstanceMethod {
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[super instanceMethod];
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}
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// CHECK-LABEL: define internal void @"\01-[Derived(MyCategory) anotherInstanceMethod]"(%0* %self, i8* %_cmd) #0 {
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// CHECK-NEXT: entry:
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// CHECK: [[SUPER:%.*]] = alloca %struct._objc_super, align 8
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// CHECK: [[CLASS_REF:%.*]] = call %struct._class_t* @objc_loadClassref(i8** @"OBJC_CLASSLIST_SUP_REFS_$_.1")
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// CHECK: [[CAST_CLASS_REF:%.*]] = bitcast %struct._class_t* [[CLASS_REF]] to i8*
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// CHECK: [[DEST:%.*]] = getelementptr inbounds %struct._objc_super, %struct._objc_super* [[SUPER]], i32 0, i32 1
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// CHECK: store i8* [[CAST_CLASS_REF]], i8** [[DEST]], align 8
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// CHECK: call void bitcast (i8* (%struct._objc_super*, i8*, ...)* @objc_msgSendSuper2 to void (%struct._objc_super*, i8*)*)(%struct._objc_super* [[SUPER]], i8* {{%.*}})
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// CHECK: ret void
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@end
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// -- calls to objc_loadClassRef() are readnone
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// CHECK: attributes [[ATTRLIST]] = { nounwind nonlazybind readnone }
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