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https://github.com/capstone-engine/llvm-capstone.git
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187770dc74
private symbols in the __DATA segment internal. This prevents the linker from removing the symbol names. Keeping the symbols visible enables tools to collect various information about the symbols, for example, tools that discover whether or not a symbol gets dirtied. rdar://problem/48887111 Differential Revision: https://reviews.llvm.org/D61454 llvm-svn: 360359
184 lines
6.2 KiB
Plaintext
184 lines
6.2 KiB
Plaintext
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fobjc-runtime=macosx-10.10 -emit-llvm -fblocks -fobjc-weak -o - %s | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-MODERN
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// RUN: %clang_cc1 -triple i386-apple-darwin10 -fobjc-runtime=macosx-fragile-10.10 -emit-llvm -fblocks -fobjc-weak -o - %s | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-FRAGILE
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@interface Object
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- (instancetype) retain;
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- (void) run;
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@end
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// CHECK-MODERN: @OBJC_CLASS_NAME_{{.*}} = {{.*}} c"\01\00"
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// CHECK-MODERN: @"_OBJC_CLASS_RO_$_Foo" = {{.*}} { i32 772
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// 772 == 0x304
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// ^ HasMRCWeakIvars
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// ^ HasCXXDestructorOnly
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// ^ HasCXXStructors
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// CHECK-FRAGILE: @OBJC_CLASS_NAME_{{.*}} = {{.*}} c"\01\00"
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// CHECK-FRAGILE: @OBJC_CLASS_Foo = {{.*}} i32 134225921,
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// 134225921 == 0x08002001
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// ^ HasMRCWeakIvars
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// ^ HasCXXStructors
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// ^ Factory
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@interface Foo : Object {
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__weak id ivar;
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}
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@end
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@implementation Foo
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// CHECK-LABEL: define internal void @"\01-[Foo .cxx_destruct]"
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// CHECK: call void @llvm.objc.destroyWeak
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@end
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void test1(__weak id x) {}
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// CHECK-LABEL: define void @_Z5test1P11objc_object(
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// CHECK: [[X:%.*]] = alloca i8*,
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// CHECK-NEXT: llvm.objc.initWeak
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// CHECK-NEXT: llvm.objc.destroyWeak
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// CHECK-NEXT: ret void
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void test2(id y) {
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__weak id z = y;
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}
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// CHECK-LABEL: define void @_Z5test2P11objc_object(
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// CHECK: [[Y:%.*]] = alloca i8*,
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// CHECK-NEXT: [[Z:%.*]] = alloca i8*,
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// CHECK-NEXT: store
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// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[Y]]
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// CHECK-NEXT: call i8* @llvm.objc.initWeak(i8** [[Z]], i8* [[T0]])
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// CHECK-NEXT: call void @llvm.objc.destroyWeak(i8** [[Z]])
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// CHECK-NEXT: ret void
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void test3(id y) {
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__weak id z;
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z = y;
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}
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// CHECK-LABEL: define void @_Z5test3P11objc_object(
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// CHECK: [[Y:%.*]] = alloca i8*,
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// CHECK-NEXT: [[Z:%.*]] = alloca i8*,
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// CHECK-NEXT: store
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// CHECK-NEXT: store i8* null, i8** [[Z]]
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// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[Y]]
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// CHECK-NEXT: call i8* @llvm.objc.storeWeak(i8** [[Z]], i8* [[T0]])
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// CHECK-NEXT: call void @llvm.objc.destroyWeak(i8** [[Z]])
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// CHECK-NEXT: ret void
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void test4(__weak id *p) {
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id y = *p;
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}
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// CHECK-LABEL: define void @_Z5test4PU6__weakP11objc_object(
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// CHECK: [[P:%.*]] = alloca i8**,
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// CHECK-NEXT: [[Y:%.*]] = alloca i8*,
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// CHECK-NEXT: store
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// CHECK-NEXT: [[T0:%.*]] = load i8**, i8*** [[P]]
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// CHECK-NEXT: [[T1:%.*]] = call i8* @llvm.objc.loadWeak(i8** [[T0]])
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// CHECK-NEXT: store i8* [[T1]], i8** [[Y]]
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// CHECK-NEXT: ret void
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void test5(__weak id *p) {
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id y = [*p retain];
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}
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// CHECK-LABEL: define void @_Z5test5PU6__weakP11objc_object
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// CHECK: [[P:%.*]] = alloca i8**,
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// CHECK-NEXT: [[Y:%.*]] = alloca i8*,
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// CHECK-NEXT: store
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// CHECK-NEXT: [[T0:%.*]] = load i8**, i8*** [[P]]
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// CHECK-NEXT: [[T1:%.*]] = call i8* @llvm.objc.loadWeakRetained(i8** [[T0]])
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// CHECK-NEXT: store i8* [[T1]], i8** [[Y]]
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// CHECK-NEXT: ret void
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void test6(__weak Foo **p) {
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Foo *y = [*p retain];
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}
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// CHECK-LABEL: define void @_Z5test6PU6__weakP3Foo
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// CHECK: [[P:%.*]] = alloca [[FOO:%.*]]**,
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// CHECK-NEXT: [[Y:%.*]] = alloca [[FOO]]*,
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// CHECK-NEXT: store
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// CHECK-NEXT: [[T0:%.*]] = load [[FOO]]**, [[FOO]]*** [[P]]
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// CHECK-NEXT: [[T1:%.*]] = bitcast [[FOO]]** [[T0]] to i8**
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// CHECK-NEXT: [[T2:%.*]] = call i8* @llvm.objc.loadWeakRetained(i8** [[T1]])
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// CHECK-NEXT: [[T3:%.*]] = bitcast i8* [[T2]] to [[FOO]]*
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// CHECK-NEXT: store [[FOO]]* [[T3]], [[FOO]]** [[Y]]
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// CHECK-NEXT: ret void
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extern "C" id get_object(void);
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extern "C" void use_block(void (^)(void));
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void test7(void) {
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__weak Foo *p = get_object();
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use_block(^{ [p run ]; });
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}
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// CHECK-LABEL: define void @_Z5test7v
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// CHECK: [[P:%.*]] = alloca [[FOO]]*,
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// CHECK: [[T0:%.*]] = call i8* @get_object()
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// CHECK-NEXT: [[T1:%.*]] = bitcast i8* [[T0]] to [[FOO]]*
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// CHECK-NEXT: [[T2:%.*]] = bitcast [[FOO]]** [[P]] to i8**
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// CHECK-NEXT: [[T3:%.*]] = bitcast [[FOO]]* [[T1]] to i8*
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// CHECK-NEXT: call i8* @llvm.objc.initWeak(i8** [[T2]], i8* [[T3]])
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// CHECK: call void @llvm.objc.copyWeak
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// CHECK: call void @use_block
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// CHECK: call void @llvm.objc.destroyWeak
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// CHECK-LABEL: define linkonce_odr hidden void @__copy_helper_block
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// CHECK: @llvm.objc.copyWeak
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// CHECK-LABEL: define linkonce_odr hidden void @__destroy_helper_block
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// CHECK: @llvm.objc.destroyWeak
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void test8(void) {
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__block __weak Foo *p = get_object();
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use_block(^{ [p run ]; });
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}
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// CHECK-LABEL: define void @_Z5test8v
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// CHECK: call i8* @llvm.objc.initWeak
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// CHECK-NOT: call void @llvm.objc.copyWeak
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// CHECK: call void @use_block
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// CHECK: call void @llvm.objc.destroyWeak
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// CHECK-LABEL: define internal void @__Block_byref_object_copy
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// CHECK: call void @llvm.objc.moveWeak
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// CHECK-LABEL: define internal void @__Block_byref_object_dispose
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// CHECK: call void @llvm.objc.destroyWeak
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// CHECK-LABEL: define void @_Z14test9_baselinev()
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// CHECK: define linkonce_odr hidden void @__copy_helper
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// CHECK: define linkonce_odr hidden void @__destroy_helper
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void test9_baseline(void) {
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Foo *p = get_object();
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use_block(^{ [p run]; });
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}
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// CHECK-LABEL: define void @_Z5test9v()
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// CHECK-NOT: define internal void @__copy_helper
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// CHECK-NOT: define internal void @__destroy_helper
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// CHECK: define void @_Z9test9_finv()
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void test9(void) {
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__unsafe_unretained Foo *p = get_object();
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use_block(^{ [p run]; });
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}
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void test9_fin() {}
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// CHECK-LABEL: define void @_Z6test10v()
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// CHECK-NOT: define internal void @__copy_helper
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// CHECK-NOT: define internal void @__destroy_helper
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// CHECK: define void @_Z10test10_finv()
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void test10(void) {
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typedef __unsafe_unretained Foo *UnsafeFooPtr;
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UnsafeFooPtr p = get_object();
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use_block(^{ [p run]; });
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}
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void test10_fin() {}
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// CHECK-LABEL: define weak_odr void @_Z6test11ILj0EEvv()
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// CHECK-NOT: define internal void @__copy_helper
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// CHECK-NOT: define internal void @__destroy_helper
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// CHECK: define void @_Z10test11_finv()
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template <unsigned i> void test11(void) {
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typedef __unsafe_unretained Foo *UnsafeFooPtr;
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UnsafeFooPtr p = get_object();
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use_block(^{ [p run]; });
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}
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template void test11<0>();
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void test11_fin() {}
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