forked from OSchip/llvm-project
121 lines
4.7 KiB
Objective-C
121 lines
4.7 KiB
Objective-C
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-runtime-has-weak -O2 -disable-llvm-optzns -o - %s | FileCheck %s
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#define PRECISE_LIFETIME __attribute__((objc_precise_lifetime))
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id test0_helper(void) __attribute__((ns_returns_retained));
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void test0() {
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PRECISE_LIFETIME id x = test0_helper();
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x = 0;
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// CHECK: [[X:%.*]] = alloca i8*
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// CHECK-NEXT: [[CALL:%.*]] = call i8* @test0_helper()
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// CHECK-NEXT: store i8* [[CALL]], i8** [[X]]
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// CHECK-NEXT: [[T1:%.*]] = load i8** [[X]]
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// CHECK-NEXT: store i8* null, i8** [[X]]
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// CHECK-NEXT: call void @objc_release(i8* [[T1]]) [[NUW:#[0-9]+]]
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// CHECK-NOT: clang.imprecise_release
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// CHECK-NEXT: [[T1:%.*]] = load i8** [[X]]
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// CHECK-NEXT: call void @objc_release(i8* [[T1]]) [[NUW:#[0-9]+]]
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// CHECK-NOT: clang.imprecise_release
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// CHECK-NEXT: ret void
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}
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// rdar://problem/9821110
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@interface Test1
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- (char*) interior __attribute__((objc_returns_inner_pointer));
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// Should we allow this on properties?
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@end
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extern Test1 *test1_helper(void);
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// CHECK: define void @test1a()
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void test1a(void) {
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// CHECK: [[T0:%.*]] = call [[TEST1:%.*]]* @test1_helper()
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// CHECK-NEXT: [[T1:%.*]] = bitcast [[TEST1]]* [[T0]] to i8*
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// CHECK-NEXT: [[T2:%.*]] = call i8* @objc_retainAutoreleasedReturnValue(i8* [[T1]])
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// CHECK-NEXT: [[T3:%.*]] = bitcast i8* [[T2]] to [[TEST1]]*
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// CHECK-NEXT: store [[TEST1]]* [[T3]]
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// CHECK-NEXT: [[T0:%.*]] = load [[TEST1]]**
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// CHECK-NEXT: [[T1:%.*]] = bitcast [[TEST1]]* [[T0]] to i8*
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// CHECK-NEXT: [[T2:%.*]] = call i8* @objc_retainAutorelease(i8* [[T1]])
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// CHECK-NEXT: [[T3:%.*]] = bitcast i8* [[T2]] to [[TEST1]]*
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// CHECK-NEXT: [[T4:%.*]] = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_
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// CHECK-NEXT: [[T5:%.*]] = bitcast [[TEST1]]* [[T3]] to i8*
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// CHECK-NEXT: [[T6:%.*]] = call i8* bitcast
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// CHECK-NEXT: store i8* [[T6]], i8**
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// CHECK-NEXT: [[T0:%.*]] = load [[TEST1]]**
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// CHECK-NEXT: [[T1:%.*]] = bitcast [[TEST1]]* [[T0]] to i8*
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// CHECK-NEXT: call void @objc_release(i8* [[T1]]) [[NUW]], !clang.imprecise_release
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// CHECK-NEXT: ret void
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Test1 *ptr = test1_helper();
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char *c = [(ptr) interior];
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}
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// CHECK: define void @test1b()
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void test1b(void) {
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// CHECK: [[T0:%.*]] = call [[TEST1:%.*]]* @test1_helper()
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// CHECK-NEXT: [[T1:%.*]] = bitcast [[TEST1]]* [[T0]] to i8*
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// CHECK-NEXT: [[T2:%.*]] = call i8* @objc_retainAutoreleasedReturnValue(i8* [[T1]])
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// CHECK-NEXT: [[T3:%.*]] = bitcast i8* [[T2]] to [[TEST1]]*
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// CHECK-NEXT: store [[TEST1]]* [[T3]]
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// CHECK-NEXT: [[T0:%.*]] = load [[TEST1]]**
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// CHECK-NEXT: [[T1:%.*]] = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_
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// CHECK-NEXT: [[T2:%.*]] = bitcast [[TEST1]]* [[T0]] to i8*
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// CHECK-NEXT: [[T3:%.*]] = call i8* bitcast
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// CHECK-NEXT: store i8* [[T3]], i8**
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// CHECK-NEXT: [[T0:%.*]] = load [[TEST1]]**
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// CHECK-NEXT: [[T1:%.*]] = bitcast [[TEST1]]* [[T0]] to i8*
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// CHECK-NEXT: call void @objc_release(i8* [[T1]]) [[NUW]]
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// CHECK-NOT: clang.imprecise_release
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// CHECK-NEXT: ret void
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__attribute__((objc_precise_lifetime)) Test1 *ptr = test1_helper();
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char *c = [ptr interior];
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}
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@interface Test2 {
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@public
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id ivar;
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}
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@end
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// CHECK: define void @test2(
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void test2(Test2 *x) {
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x->ivar = 0;
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// CHECK: [[X:%.*]] = alloca [[TEST2:%.*]]*
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// CHECK-NEXT: [[T0:%.*]] = bitcast [[TEST2]]* {{%.*}} to i8*
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// CHECK-NEXT: [[T1:%.*]] = call i8* @objc_retain(i8* [[T0]]) [[NUW]]
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// CHECK-NEXT: [[T2:%.*]] = bitcast i8* [[T1]] to [[TEST2]]*
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// CHECK-NEXT: store [[TEST2]]* [[T2]], [[TEST2]]** [[X]],
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// CHECK-NEXT: [[T0:%.*]] = load [[TEST2]]** [[X]],
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// CHECK-NEXT: [[OFFSET:%.*]] = load i64* @"OBJC_IVAR_$_Test2.ivar"
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// CHECK-NEXT: [[T1:%.*]] = bitcast [[TEST2]]* [[T0]] to i8*
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// CHECK-NEXT: [[T2:%.*]] = getelementptr inbounds i8* [[T1]], i64 [[OFFSET]]
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// CHECK-NEXT: [[T3:%.*]] = bitcast i8* [[T2]] to i8**
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// CHECK-NEXT: [[T4:%.*]] = load i8** [[T3]],
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// CHECK-NEXT: store i8* null, i8** [[T3]],
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// CHECK-NEXT: call void @objc_release(i8* [[T4]]) [[NUW]]
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// CHECK-NOT: imprecise
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// CHECK-NEXT: [[T0:%.*]] = load [[TEST2]]** [[X]]
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// CHECK-NEXT: [[T1:%.*]] = bitcast [[TEST2]]* [[T0]] to i8*
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// CHECK-NEXT: call void @objc_release(i8* [[T1]]) [[NUW]], !clang.imprecise_release
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// CHECK-NEXT: ret void
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}
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// CHECK: define void @test3(i8*
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void test3(PRECISE_LIFETIME id x) {
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// CHECK: [[X:%.*]] = alloca i8*,
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// CHECK-NEXT: [[T0:%.*]] = call i8* @objc_retain(i8* {{%.*}}) [[NUW]]
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// CHECK-NEXT: store i8* [[T0]], i8** [[X]],
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// CHECK-NEXT: [[T0:%.*]] = load i8** [[X]]
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// CHECK-NEXT: call void @objc_release(i8* [[T0]]) [[NUW]]
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// CHECK-NOT: imprecise_release
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// CHECK-NEXT: ret void
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}
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// CHECK: attributes [[NUW]] = { nounwind }
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