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llvm-project/clang/test/CodeGenObjCXX/arc.mm

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// RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-apple-darwin10 -emit-llvm -fobjc-runtime-has-weak -fblocks -fobjc-arc -O2 -disable-llvm-passes -o - %s | FileCheck %s
struct NSFastEnumerationState;
@interface NSArray
- (unsigned long) countByEnumeratingWithState: (struct NSFastEnumerationState*) state
objects: (id*) buffer
count: (unsigned long) bufferSize;
@end;
NSArray *nsarray() { return 0; }
// CHECK: define{{.*}} [[NSARRAY:%.*]]* @_Z7nsarrayv()
void use(id);
// rdar://problem/9315552
// The analogous ObjC testcase test46 in arr.m.
void test0(__weak id *wp, __weak volatile id *wvp) {
extern id test0_helper(void);
// TODO: this is sub-optimal, we should retain at the actual call site.
// TODO: in the non-volatile case, we do not need to be reloading.
// CHECK: [[T1:%.*]] = call noundef i8* @_Z12test0_helperv() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(i8* [[T1]])
// CHECK-NEXT: [[T2:%.*]] = load i8**, i8*** {{%.*}}, align 8
// CHECK-NEXT: [[T3:%.*]] = call i8* @llvm.objc.storeWeak(i8** [[T2]], i8* [[T1]])
// CHECK-NEXT: [[T4:%.*]] = call i8* @llvm.objc.retain(i8* [[T3]])
// CHECK-NEXT: store i8* [[T4]], i8**
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T1]])
id x = *wp = test0_helper();
// CHECK: [[T1:%.*]] = call noundef i8* @_Z12test0_helperv() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(i8* [[T1]])
// CHECK-NEXT: [[T2:%.*]] = load i8**, i8*** {{%.*}}, align 8
// CHECK-NEXT: [[T3:%.*]] = call i8* @llvm.objc.storeWeak(i8** [[T2]], i8* [[T1]])
// CHECK-NEXT: [[T4:%.*]] = call i8* @llvm.objc.loadWeakRetained(i8** [[T2]])
// CHECK-NEXT: store i8* [[T4]], i8**
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T1]])
id y = *wvp = test0_helper();
}
// rdar://problem/9320648
struct Test1_helper { Test1_helper(); };
@interface Test1 @end
@implementation Test1 { Test1_helper x; } @end
// CHECK: define internal noundef i8* @"\01-[Test1 .cxx_construct]"(
// CHECK: call void @_ZN12Test1_helperC1Ev(
// CHECK-NEXT: load
// CHECK-NEXT: bitcast
// CHECK-NEXT: ret i8*
void test34(int cond) {
__strong id strong;
__weak id weak;
extern void test34_sink(id *);
test34_sink(cond ? &strong : 0);
test34_sink(cond ? &weak : 0);
// CHECK-LABEL: define{{.*}} void @_Z6test34i(
// CHECK: [[COND:%.*]] = alloca i32
// CHECK-NEXT: [[STRONG:%.*]] = alloca i8*
// CHECK-NEXT: [[WEAK:%.*]] = alloca i8*
// CHECK-NEXT: [[TEMP1:%.*]] = alloca i8*
// CHECK-NEXT: [[TEMP2:%.*]] = alloca i8*
// CHECK-NEXT: [[CONDCLEANUPSAVE:%.*]] = alloca i8*
// CHECK-NEXT: [[CONDCLEANUP:%.*]] = alloca i1
// CHECK-NEXT: store i32
// CHECK-NEXT: [[STRONGP:%.*]] = bitcast i8** [[STRONG]] to i8*
// CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 8, i8* [[STRONGP]])
// CHECK-NEXT: store i8* null, i8** [[STRONG]]
// CHECK-NEXT: [[WEAKP:%.*]] = bitcast i8** [[WEAK]] to i8*
// CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 8, i8* [[WEAKP]])
// CHECK-NEXT: call i8* @llvm.objc.initWeak(i8** [[WEAK]], i8* null)
// CHECK-NEXT: [[T0:%.*]] = load i32, i32* [[COND]]
// CHECK-NEXT: [[T1:%.*]] = icmp ne i32 [[T0]], 0
// CHECK: [[ARG:%.*]] = phi i8**
// CHECK-NEXT: [[T0:%.*]] = icmp eq i8** [[ARG]], null
// CHECK-NEXT: [[T1:%.*]] = select i1 [[T0]], i8** null, i8** [[TEMP1]]
// CHECK-NEXT: br i1 [[T0]],
// CHECK: [[T0:%.*]] = load i8*, i8** [[ARG]]
// CHECK-NEXT: store i8* [[T0]], i8** [[TEMP1]]
// CHECK-NEXT: br label
// CHECK: [[W0:%.*]] = phi i8* [ [[T0]], {{%.*}} ], [ undef, {{%.*}} ]
// CHECK: call void @_Z11test34_sinkPU15__autoreleasingP11objc_object(i8** noundef [[T1]])
// CHECK-NEXT: [[T0:%.*]] = icmp eq i8** [[ARG]], null
// CHECK-NEXT: br i1 [[T0]],
// CHECK: [[T0:%.*]] = load i8*, i8** [[TEMP1]]
// CHECK-NEXT: [[T1:%.*]] = call i8* @llvm.objc.retain(i8* [[T0]])
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.use(i8* [[W0]])
// CHECK-NEXT: [[T2:%.*]] = load i8*, i8** [[ARG]]
// CHECK-NEXT: store i8* [[T1]], i8** [[ARG]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T2]])
// CHECK-NEXT: br label
// CHECK: [[T0:%.*]] = load i32, i32* [[COND]]
// CHECK-NEXT: [[T1:%.*]] = icmp ne i32 [[T0]], 0
// CHECK: [[ARG:%.*]] = phi i8**
// CHECK-NEXT: [[T0:%.*]] = icmp eq i8** [[ARG]], null
// CHECK-NEXT: [[T1:%.*]] = select i1 [[T0]], i8** null, i8** [[TEMP2]]
// CHECK-NEXT: store i1 false, i1* [[CONDCLEANUP]]
// CHECK-NEXT: br i1 [[T0]],
// CHECK: [[T0:%.*]] = call i8* @llvm.objc.loadWeakRetained(i8** [[ARG]])
// CHECK-NEXT: store i8* [[T0]], i8** [[CONDCLEANUPSAVE]]
// CHECK-NEXT: store i1 true, i1* [[CONDCLEANUP]]
// CHECK-NEXT: store i8* [[T0]], i8** [[TEMP2]]
// CHECK-NEXT: br label
// CHECK: call void @_Z11test34_sinkPU15__autoreleasingP11objc_object(i8** noundef [[T1]])
// CHECK-NEXT: [[T0:%.*]] = icmp eq i8** [[ARG]], null
// CHECK-NEXT: br i1 [[T0]],
// CHECK: [[T0:%.*]] = load i8*, i8** [[TEMP2]]
// CHECK-NEXT: call i8* @llvm.objc.storeWeak(i8** [[ARG]], i8* [[T0]])
// CHECK-NEXT: br label
// CHECK: call void @llvm.objc.destroyWeak(i8** [[WEAK]])
// CHECK: ret void
}
struct Test35_Helper {
static id makeObject1() __attribute__((ns_returns_retained));
id makeObject2() __attribute__((ns_returns_retained));
static id makeObject3();
id makeObject4();
};
// CHECK-LABEL: define{{.*}} void @_Z6test3513Test35_HelperPS_
void test35(Test35_Helper x0, Test35_Helper *x0p) {
// CHECK: call void @llvm.lifetime.start
// CHECK: call noundef i8* @_ZN13Test35_Helper11makeObject1Ev
// CHECK-NOT: call i8* @llvm.objc.retain
id obj1 = Test35_Helper::makeObject1();
// CHECK: call void @llvm.lifetime.start
// CHECK: call noundef i8* @_ZN13Test35_Helper11makeObject2Ev
// CHECK-NOT: call i8* @llvm.objc.retain
id obj2 = x0.makeObject2();
// CHECK: call void @llvm.lifetime.start
// CHECK: call noundef i8* @_ZN13Test35_Helper11makeObject2Ev
// CHECK-NOT: call i8* @llvm.objc.retain
id obj3 = x0p->makeObject2();
id (Test35_Helper::*pmf)() __attribute__((ns_returns_retained))
= &Test35_Helper::makeObject2;
// CHECK: call void @llvm.lifetime.start
// CHECK: call noundef i8* %
// CHECK-NOT: call i8* @llvm.objc.retain
id obj4 = (x0.*pmf)();
// CHECK: call void @llvm.lifetime.start
// CHECK: call noundef i8* %
// CHECK-NOT: call i8* @llvm.objc.retain
id obj5 = (x0p->*pmf)();
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK-NEXT: ret void
}
// CHECK-LABEL: define{{.*}} void @_Z7test35b13Test35_HelperPS_
void test35b(Test35_Helper x0, Test35_Helper *x0p) {
// CHECK: call void @llvm.lifetime.start
// CHECK: call noundef i8* @_ZN13Test35_Helper11makeObject3Ev{{.*}} [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
id obj1 = Test35_Helper::makeObject3();
// CHECK: call void @llvm.lifetime.start
// CHECK: call noundef i8* @_ZN13Test35_Helper11makeObject4Ev{{.*}} [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
id obj2 = x0.makeObject4();
// CHECK: call void @llvm.lifetime.start
// CHECK: call noundef i8* @_ZN13Test35_Helper11makeObject4Ev{{.*}} [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
id obj3 = x0p->makeObject4();
id (Test35_Helper::*pmf)() = &Test35_Helper::makeObject4;
// CHECK: call void @llvm.lifetime.start
// CHECK: call noundef i8* %{{.*}} [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
id obj4 = (x0.*pmf)();
// CHECK: call void @llvm.lifetime.start
// CHECK: call noundef i8* %{{.*}} [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
id obj5 = (x0p->*pmf)();
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK: call void @llvm.lifetime.end
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK-NEXT: ret void
}
// rdar://problem/9603128
// CHECK-LABEL: define{{.*}} i8* @_Z6test36P11objc_object(
id test36(id z) {
// CHECK: llvm.objc.retain
// CHECK: llvm.objc.retain
// CHECK: llvm.objc.release
// CHECK: llvm.objc.autoreleaseReturnValue
return z;
}
// Template instantiation side of rdar://problem/9817306
@interface Test37
+ alloc;
- init;
- (NSArray *) array;
@end
template <class T> void test37(T *a) {
for (id x in a.array) {
use(x);
}
}
extern template void test37<Test37>(Test37 *a);
template void test37<Test37>(Test37 *a);
// CHECK-LABEL: define weak_odr void @_Z6test37I6Test37EvPT_(
// CHECK: [[T2:%.*]] = call noundef [[NSARRAY]]* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to [[NSARRAY]]* (i8*, i8*)*)({{.*}} [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use({{.*}} [[T2]])
// Make sure it's not immediately released before starting the iteration.
// CHECK-NEXT: [[T0:%.*]] = bitcast [[NSARRAY]]* [[T2]] to i8*
// CHECK-NEXT: load i8*, i8** @OBJC_SELECTOR_REFERENCES_
// CHECK-NEXT: @objc_msgSend
// This bitcast is for the mutation check.
// CHECK: [[T0:%.*]] = bitcast [[NSARRAY]]* [[T2]] to i8*
// CHECK-NEXT: @objc_enumerationMutation
// This bitcast is for the 'next' message send.
// CHECK: [[T0:%.*]] = bitcast [[NSARRAY]]* [[T2]] to i8*
// CHECK-NEXT: load i8*, i8** @OBJC_SELECTOR_REFERENCES_
// CHECK-NEXT: @objc_msgSend
// This bitcast is for the final release.
// CHECK: [[T0:%.*]] = bitcast [[NSARRAY]]* [[T2]] to i8*
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T0]])
template<typename T>
void send_release() {
[Test37 array];
}
// CHECK-LABEL: define weak_odr void @_Z12send_releaseIiEvv(
// CHECK: call noundef %0* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend{{.*}} [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(
// CHECK-NEXT: bitcast
// CHECK-NEXT: call void @llvm.objc.release
// CHECK-NEXT: ret void
template void send_release<int>();
template<typename T>
Test37 *instantiate_init() {
Test37 *result = [[Test37 alloc] init];
return result;
}
// CHECK-LABEL: define weak_odr noundef %2* @_Z16instantiate_initIiEP6Test37v
// CHECK: call noundef i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend
// CHECK: call noundef i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend
// CHECK: call i8* @llvm.objc.retain
// CHECK: call void @llvm.objc.release
// CHECK: call i8* @llvm.objc.autoreleaseReturnValue
template Test37* instantiate_init<int>();
// Just make sure that the AST invariants hold properly here,
// i.e. that we don't crash.
// The block should get bound in the full-expression outside
// the statement-expression.
template <class T> class Test38 {
void test(T x) {
^{ (void) x; }, ({ x; });
}
};
// CHECK-LABEL: define weak_odr void @_ZN6Test38IiE4testEi(
template class Test38<int>;
// rdar://problem/11964832
class Test39_base1 {
virtual void foo();
};
class Test39_base2 {
virtual id bar();
};
class Test39 : Test39_base1, Test39_base2 { // base2 is at non-zero offset
virtual id bar();
};
id Test39::bar() { return 0; }
// Note lack of autorelease.
// CHECK-LABEL: define{{.*}} i8* @_ZThn8_N6Test393barEv(
// CHECK: call noundef i8* @_ZN6Test393barEv(
// CHECK-NEXT: ret i8*
// rdar://13617051
// Just a basic correctness check that IR-gen still works after instantiating
// a non-dependent message send that requires writeback.
@interface Test40
+ (void) foo:(id *)errorPtr;
@end
template <class T> void test40_helper() {
id x;
[Test40 foo: &x];
};
template void test40_helper<int>();
// CHECK-LABEL: define weak_odr void @_Z13test40_helperIiEvv()
// CHECK: [[X:%.*]] = alloca i8*
// CHECK-NEXT: [[TEMP:%.*]] = alloca i8*
// CHECK-NEXT: [[XP:%.*]] = bitcast i8** [[X]] to i8*
// CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 8, i8* [[XP]])
// CHECK-NEXT: store i8* null, i8** [[X]]
// CHECK: [[T0:%.*]] = load i8*, i8** [[X]]
// CHECK-NEXT: store i8* [[T0]], i8** [[TEMP]]
// CHECK: @objc_msgSend
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[TEMP]]
// CHECK-NEXT: call i8* @llvm.objc.retain(i8* [[T0]])
// Check that moves out of __weak variables are compiled to use objc_moveWeak.
void test41(__weak id &&x) {
__weak id y = static_cast<__weak id &&>(x);
}
// CHECK-LABEL: define{{.*}} void @_Z6test41OU6__weakP11objc_object
// CHECK: [[X:%.*]] = alloca i8**
// CHECK: [[Y:%.*]] = alloca i8*
// CHECK: [[T0:%.*]] = load i8**, i8*** [[X]]
// CHECK-NEXT: call void @llvm.objc.moveWeak(i8** [[Y]], i8** [[T0]])
// CHECK-NEXT: call void @llvm.objc.destroyWeak(i8** [[Y]])
void test42() {
__attribute__((ns_returns_retained)) id test42_0();
id test42_1(id);
void test42_2(id &&);
test42_2(test42_1(test42_0()));
}
// Check that the pointer returned by test42_0 is released after the full expression.
// CHECK-LABEL: define void @_Z6test42v()
// CHECK: %[[CALL:.*]] = call noundef i8* @_Z8test42_0v()
// CHECK: call void @_Z8test42_2OU15__autoreleasingP11objc_object(
// CHECK: call void @llvm.objc.release(i8* %[[CALL]])
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