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comparison clang/test/CodeGenObjC/class-stubs.m @ 150:1d019706d866

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LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
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children 0572611fdcc8
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147:c2174574ed3a 150:1d019706d866
1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -Wno-objc-root-class -emit-llvm -o - %s | FileCheck %s
2
3 // -- classref for the message send in main()
4 //
5 // The class is declared with objc_class_stub, so LSB of the class pointer
6 // must be set to 1.
7 //
8 // CHECK-LABEL: @"OBJC_CLASSLIST_REFERENCES_$_" = internal global i8* getelementptr (i8, i8* bitcast (%struct._class_t* @"OBJC_CLASS_$_Base" to i8*), i32 1), align 8
9
10 // -- classref for the super message send in anotherClassMethod()
11 //
12 // Metaclasses do not use the "stub" mechanism and are referenced statically.
13 //
14 // CHECK-LABEL: @"OBJC_CLASSLIST_SUP_REFS_$_" = internal global %struct._class_t* @"OBJC_METACLASS_$_Derived", section "__DATA,__objc_superrefs,regular,no_dead_strip", align 8
15
16 // -- classref for the super message send in anotherInstanceMethod()
17 //
18 // The class is declared with objc_class_stub, so LSB of the class pointer
19 // must be set to 1.
20 //
21 // CHECK-LABEL: @"OBJC_CLASSLIST_SUP_REFS_$_.1" = internal global i8* getelementptr (i8, i8* bitcast (%struct._class_t* @"OBJC_CLASS_$_Derived" to i8*), i32 1), section "__DATA,__objc_superrefs,regular,no_dead_strip", align 8
22
23 // -- category list for class stubs goes in __objc_catlist2.
24 //
25 // CHECK-LABEL: @"OBJC_LABEL_STUB_CATEGORY_$" = internal global [1 x i8*] [i8* bitcast (%struct._category_t* @"_OBJC_$_CATEGORY_Derived_$_MyCategory" to i8*)], section "__DATA,__objc_catlist2,regular,no_dead_strip", align 8
26
27 __attribute__((objc_class_stub))
28 __attribute__((objc_subclassing_restricted))
29 @interface Base
30 + (void) classMethod;
31 - (void) instanceMethod;
32 @end
33
34 __attribute__((objc_class_stub))
35 __attribute__((objc_subclassing_restricted))
36 @interface Derived : Base
37 @end
38
39 int main() {
40 [Base classMethod];
41 }
42 // CHECK-LABEL: define i32 @main()
43 // CHECK-NEXT: entry:
44 // CHECK-NEXT: [[CLASS:%.*]] = call %struct._class_t* @objc_loadClassref(i8** @"OBJC_CLASSLIST_REFERENCES_$_")
45 // CHECK-NEXT: [[SELECTOR:%.*]] = load i8*, i8** @OBJC_SELECTOR_REFERENCES_
46 // CHECK-NEXT: [[RECEIVER:%.*]] = bitcast %struct._class_t* [[CLASS]] to i8*
47 // CHECK-NEXT: call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*)*)(i8* [[RECEIVER]], i8* [[SELECTOR]])
48 // CHECK-NEXT: ret i32 0
49
50 // CHECK-LABEL: declare extern_weak %struct._class_t* @objc_loadClassref(i8**)
51 // CHECK-SAME: [[ATTRLIST:#.*]]
52
53 @implementation Derived (MyCategory)
54
55 + (void) anotherClassMethod {
56 [super classMethod];
57 }
58 // CHECK-LABEL: define internal void @"\01+[Derived(MyCategory) anotherClassMethod]"(i8* %self, i8* %_cmd) #0 {
59 // CHECK-NEXT: entry:
60 // CHECK: [[SUPER:%.*]] = alloca %struct._objc_super, align 8
61 // CHECK: [[METACLASS_REF:%.*]] = load %struct._class_t*, %struct._class_t** @"OBJC_CLASSLIST_SUP_REFS_$_", align 8
62 // CHECK: [[CAST_METACLASS_REF:%.*]] = bitcast %struct._class_t* [[METACLASS_REF]] to i8*
63 // CHECK: [[DEST:%.*]] = getelementptr inbounds %struct._objc_super, %struct._objc_super* [[SUPER]], i32 0, i32 1
64 // CHECK: store i8* [[CAST_METACLASS_REF]], i8** [[DEST]], align 8
65 // CHECK: call void bitcast (i8* (%struct._objc_super*, i8*, ...)* @objc_msgSendSuper2 to void (%struct._objc_super*, i8*)*)(%struct._objc_super* [[SUPER]], i8* {{%.*}})
66 // CHECK: ret void
67
68 - (void) anotherInstanceMethod {
69 [super instanceMethod];
70 }
71 // CHECK-LABEL: define internal void @"\01-[Derived(MyCategory) anotherInstanceMethod]"(%0* %self, i8* %_cmd) #0 {
72 // CHECK-NEXT: entry:
73 // CHECK: [[SUPER:%.*]] = alloca %struct._objc_super, align 8
74 // CHECK: [[CLASS_REF:%.*]] = call %struct._class_t* @objc_loadClassref(i8** @"OBJC_CLASSLIST_SUP_REFS_$_.1")
75 // CHECK: [[CAST_CLASS_REF:%.*]] = bitcast %struct._class_t* [[CLASS_REF]] to i8*
76 // CHECK: [[DEST:%.*]] = getelementptr inbounds %struct._objc_super, %struct._objc_super* [[SUPER]], i32 0, i32 1
77 // CHECK: store i8* [[CAST_CLASS_REF]], i8** [[DEST]], align 8
78 // CHECK: call void bitcast (i8* (%struct._objc_super*, i8*, ...)* @objc_msgSendSuper2 to void (%struct._objc_super*, i8*)*)(%struct._objc_super* [[SUPER]], i8* {{%.*}})
79 // CHECK: ret void
80
81 @end
82
83 // -- calls to objc_loadClassRef() are readnone
84 // CHECK: attributes [[ATTRLIST]] = { nounwind nonlazybind readnone }