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llvm-project/clang/test/CodeGenObjC/arc-rv-attr.m

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Objective-C
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// RUN: %clang_cc1 -triple arm64-apple-ios9 -fobjc-runtime=ios-9.0 -fobjc-arc -O -disable-llvm-passes -emit-llvm -o - %s | FileCheck %s -check-prefix=CHECK
@class A;
A *makeA(void);
void test_assign() {
__unsafe_unretained id x;
x = makeA();
}
// CHECK-LABEL: define{{.*}} void @test_assign()
// CHECK: [[X:%.*]] = alloca i8*
// CHECK: [[T0:%.*]] = call [[A:.*]]* @makeA() [ "clang.arc.attachedcall"(i64 1) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use({{.*}} [[T0]])
// CHECK-NEXT: [[T1:%.*]] = bitcast [[A]]* [[T0]] to i8*
// CHECK-NEXT: store i8* [[T1]], i8** [[X]]
// CHECK-NEXT: bitcast
// CHECK-NEXT: lifetime.end
// CHECK-NEXT: ret void
void test_assign_assign() {
__unsafe_unretained id x, y;
x = y = makeA();
}
// CHECK-LABEL: define{{.*}} void @test_assign_assign()
// CHECK: [[X:%.*]] = alloca i8*
// CHECK: [[Y:%.*]] = alloca i8*
// CHECK: [[T0:%.*]] = call [[A]]* @makeA() [ "clang.arc.attachedcall"(i64 1) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use({{.*}} [[T0]])
// CHECK-NEXT: [[T1:%.*]] = bitcast [[A]]* [[T0]] to i8*
// CHECK-NEXT: store i8* [[T1]], i8** [[Y]]
// CHECK-NEXT: store i8* [[T1]], i8** [[X]]
// CHECK-NEXT: bitcast
// CHECK-NEXT: lifetime.end
// CHECK-NEXT: bitcast
// CHECK-NEXT: lifetime.end
// CHECK-NEXT: ret void
void test_strong_assign_assign() {
__strong id x;
__unsafe_unretained id y;
x = y = makeA();
}
// CHECK-LABEL: define{{.*}} void @test_strong_assign_assign()
// CHECK: [[X:%.*]] = alloca i8*
// CHECK: [[Y:%.*]] = alloca i8*
// CHECK: [[T0:%.*]] = call [[A]]* @makeA() [ "clang.arc.attachedcall"(i64 0) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use({{.*}} [[T0]])
// CHECK-NEXT: [[T1:%.*]] = bitcast [[A]]* [[T0]] to i8*
// CHECK-NEXT: store i8* [[T1]], i8** [[Y]]
// CHECK-NEXT: [[OLD:%.*]] = load i8*, i8** [[X]]
// CHECK-NEXT: store i8* [[T1]], i8** [[X]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[OLD]]
// CHECK-NEXT: bitcast
// CHECK-NEXT: lifetime.end
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[X]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T0]])
// CHECK-NEXT: bitcast
// CHECK-NEXT: lifetime.end
// CHECK-NEXT: ret void
void test_assign_strong_assign() {
__unsafe_unretained id x;
__strong id y;
x = y = makeA();
}
// CHECK-LABEL: define{{.*}} void @test_assign_strong_assign()
// CHECK: [[X:%.*]] = alloca i8*
// CHECK: [[Y:%.*]] = alloca i8*
// CHECK: [[T0:%.*]] = call [[A]]* @makeA() [ "clang.arc.attachedcall"(i64 0) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use({{.*}} [[T0]])
// CHECK-NEXT: [[T1:%.*]] = bitcast [[A]]* [[T0]] to i8*
// CHECK-NEXT: [[OLD:%.*]] = load i8*, i8** [[Y]]
// CHECK-NEXT: store i8* [[T1]], i8** [[Y]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[OLD]]
// CHECK-NEXT: store i8* [[T1]], i8** [[X]]
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[Y]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T0]])
// CHECK-NEXT: bitcast
// CHECK-NEXT: lifetime.end
// CHECK-NEXT: bitcast
// CHECK-NEXT: lifetime.end
// CHECK-NEXT: ret void
void test_init() {
__unsafe_unretained id x = makeA();
}
// CHECK-LABEL: define{{.*}} void @test_init()
// CHECK: [[X:%.*]] = alloca i8*
// CHECK: [[T0:%.*]] = call [[A]]* @makeA() [ "clang.arc.attachedcall"(i64 1) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use({{.*}} [[T0]])
// CHECK-NEXT: [[T1:%.*]] = bitcast [[A]]* [[T0]] to i8*
// CHECK-NEXT: store i8* [[T1]], i8** [[X]]
// CHECK-NEXT: bitcast
// CHECK-NEXT: lifetime.end
// CHECK-NEXT: ret void
void test_init_assignment() {
__unsafe_unretained id x;
__unsafe_unretained id y = x = makeA();
}
// CHECK-LABEL: define{{.*}} void @test_init_assignment()
// CHECK: [[X:%.*]] = alloca i8*
// CHECK: [[Y:%.*]] = alloca i8*
// CHECK: [[T0:%.*]] = call [[A]]* @makeA() [ "clang.arc.attachedcall"(i64 1) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use({{.*}} [[T0]])
// CHECK-NEXT: [[T1:%.*]] = bitcast [[A]]* [[T0]] to i8*
// CHECK-NEXT: store i8* [[T1]], i8** [[X]]
// CHECK-NEXT: store i8* [[T1]], i8** [[Y]]
// CHECK-NEXT: bitcast
// CHECK-NEXT: lifetime.end
// CHECK-NEXT: bitcast
// CHECK-NEXT: lifetime.end
// CHECK-NEXT: ret void
void test_strong_init_assignment() {
__unsafe_unretained id x;
__strong id y = x = makeA();
}
// CHECK-LABEL: define{{.*}} void @test_strong_init_assignment()
// CHECK: [[X:%.*]] = alloca i8*
// CHECK: [[Y:%.*]] = alloca i8*
// CHECK: [[T0:%.*]] = call [[A]]* @makeA() [ "clang.arc.attachedcall"(i64 0) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use({{.*}} [[T0]])
// CHECK-NEXT: [[T1:%.*]] = bitcast [[A]]* [[T0]] to i8*
// CHECK-NEXT: store i8* [[T1]], i8** [[X]]
// CHECK-NEXT: store i8* [[T1]], i8** [[Y]]
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[Y]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T0]])
// CHECK-NEXT: bitcast
// CHECK-NEXT: lifetime.end
// CHECK-NEXT: bitcast
// CHECK-NEXT: lifetime.end
// CHECK-NEXT: ret void
void test_init_strong_assignment() {
__strong id x;
__unsafe_unretained id y = x = makeA();
}
// CHECK-LABEL: define{{.*}} void @test_init_strong_assignment()
// CHECK: [[X:%.*]] = alloca i8*
// CHECK: [[Y:%.*]] = alloca i8*
// CHECK: [[T0:%.*]] = call [[A]]* @makeA() [ "clang.arc.attachedcall"(i64 0) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use({{.*}} [[T0]])
// CHECK-NEXT: [[T1:%.*]] = bitcast [[A]]* [[T0]] to i8*
// CHECK-NEXT: [[OLD:%.*]] = load i8*, i8** [[X]]
// CHECK-NEXT: store i8* [[T1]], i8** [[X]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[OLD]])
// CHECK-NEXT: store i8* [[T1]], i8** [[Y]]
// CHECK-NEXT: bitcast
// CHECK-NEXT: lifetime.end
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[X]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T0]])
// CHECK-NEXT: bitcast
// CHECK-NEXT: lifetime.end
// CHECK-NEXT: ret void
void test_ignored() {
makeA();
}
// CHECK-LABEL: define{{.*}} void @test_ignored()
// CHECK: [[T0:%.*]] = call [[A]]* @makeA() [ "clang.arc.attachedcall"(i64 1) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use({{.*}} [[T0]])
// CHECK-NEXT: ret void
void test_cast_to_void() {
(void) makeA();
}
// CHECK-LABEL: define{{.*}} void @test_cast_to_void()
// CHECK: [[T0:%.*]] = call [[A]]* @makeA() [ "clang.arc.attachedcall"(i64 1) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use({{.*}} [[T0]])
// CHECK-NEXT: ret void
// This is always at the end of the module.
// CHECK-OPTIMIZED: !llvm.module.flags = !{!0,
// CHECK-OPTIMIZED: !0 = !{i32 1, !"clang.arc.retainAutoreleasedReturnValueMarker", !"mov{{.*}}marker for objc_retainAutoreleaseReturnValue"}
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