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llvm-project/clang/test/CodeGenObjC/arc-blocks.m
Nikita Popov c23b4fbdbb
[IR] Remove size argument from lifetime intrinsics (#150248) 
Now that #149310 has restricted lifetime intrinsics to only work on
allocas, we can also drop the explicit size argument. Instead, the size
is implied by the alloca.

This removes the ability to only mark a prefix of an alloca alive/dead.
We never used that capability, so we should remove the need to handle
that possibility everywhere (though many key places, including stack
coloring, did not actually respect this).
2025-08-08 11:09:34 +02:00

701 lines
33 KiB
Objective-C
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// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-runtime-has-weak -O2 -disable-llvm-passes -o - %s | FileCheck -check-prefix=CHECK -check-prefix=CHECK-HEAP -check-prefix=CHECK-COMMON %s
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-runtime-has-weak -O2 -disable-llvm-passes -fobjc-avoid-heapify-local-blocks -o - %s | FileCheck -check-prefix=CHECK -check-prefix=CHECK-NOHEAP -check-prefix=CHECK-COMMON %s
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-runtime-has-weak -o - %s | FileCheck -check-prefix=CHECK-UNOPT -check-prefix=CHECK-COMMON %s
// CHECK-COMMON: @[[BLOCK_DESCRIPTOR_TMP44:.*]] = linkonce_odr hidden unnamed_addr constant { i64, i64, ptr, ptr, ptr, i64 } { i64 0, i64 40, ptr @__copy_helper_block_8_32s, ptr @__destroy_helper_block_8_32s, ptr @{{.*}}, i64 256 }, align 8
// CHECK-COMMON: @[[BLOCK_DESCRIPTOR_TMP9:.*]] = linkonce_odr hidden unnamed_addr constant { i64, i64, ptr, ptr, ptr, i64 } { i64 0, i64 40, ptr @__copy_helper_block_8_32r, ptr @__destroy_helper_block_8_32r, ptr @{{.*}}, i64 16 }, align 8
// CHECK-COMMON: @[[BLOCK_DESCRIPTOR_TMP46:.*]] = linkonce_odr hidden unnamed_addr constant { i64, i64, ptr, ptr, ptr, ptr } { i64 0, i64 48, ptr @__copy_helper_block_8_32s, ptr @__destroy_helper_block_8_32s, ptr @{{.*}}, ptr @{{.*}} }, align 8
// CHECK-COMMON: @[[BLOCK_DESCRIPTOR_TMP48:.*]] = linkonce_odr hidden unnamed_addr constant { i64, i64, ptr, ptr, ptr, i64 } { i64 0, i64 40, ptr @__copy_helper_block_8_32b, ptr @__destroy_helper_block_8_32s, ptr @{{.*}}, i64 256 }, align 8
// Check that no copy/dispose helpers are emitted for this block.
// CHECK-COMMON: @[[BLOCK_DESCRIPTOR_TMP10:.*]] = linkonce_odr hidden unnamed_addr constant { i64, i64, ptr, ptr } { i64 0, i64 40, ptr @{{.*}}, ptr @{{.*}} }, align 8
// This shouldn't crash.
void test0(id (^maker)(void)) {
maker();
}
int (^test1(int x))(void) {
// CHECK-LABEL: define{{.*}} ptr @test1(
// CHECK: [[X:%.*]] = alloca i32,
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-NEXT: store i32 {{%.*}}, ptr [[X]]
// CHECK: [[T2:%.*]] = call ptr @llvm.objc.retainBlock(ptr [[BLOCK]]) [[NUW:#[0-9]+]]
// CHECK-NEXT: [[T5:%.*]] = tail call ptr @llvm.objc.autoreleaseReturnValue(ptr [[T2]]) [[NUW]]
// CHECK-NEXT: ret ptr [[T5]]
return ^{ return x; };
}
void test2(id x) {
// CHECK-LABEL: define{{.*}} void @test2(
// CHECK: [[X:%.*]] = alloca ptr,
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-NEXT: [[PARM:%.*]] = call ptr @llvm.objc.retain(ptr {{%.*}})
// CHECK-NEXT: store ptr [[PARM]], ptr [[X]]
// CHECK: [[SLOT:%.*]] = getelementptr inbounds nuw [[BLOCK_T]], ptr [[BLOCK]], i32 0, i32 5
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[X]],
// CHECK-NEXT: [[T1:%.*]] = call ptr @llvm.objc.retain(ptr [[T0]])
// CHECK-NEXT: store ptr [[T1]], ptr [[SLOT]],
// CHECK-NEXT: call void @test2_helper(
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[SLOT]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]]) [[NUW]], !clang.imprecise_release
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[X]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]]) [[NUW]], !clang.imprecise_release
// CHECK-NEXT: ret void
extern void test2_helper(id (^)(void));
test2_helper(^{ return x; });
// CHECK: define linkonce_odr hidden void @__copy_helper_block_8_32s(ptr noundef %0, ptr noundef %1) unnamed_addr #{{[0-9]+}} {
// CHECK: [[SRC:%.*]] = load ptr, ptr
// CHECK-NEXT: [[DST:%.*]] = load ptr, ptr
// CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds nuw [[BLOCK_T]], ptr [[SRC]], i32 0, i32 5
// CHECK-NEXT: [[T1:%.*]] = load ptr, ptr [[T0]]
// CHECK-NEXT: [[T2:%.*]] = call ptr @llvm.objc.retain(ptr [[T1]]) [[NUW]]
// CHECK-NEXT: ret void
// CHECK: define linkonce_odr hidden void @__destroy_helper_block_8_32s(ptr noundef %0) unnamed_addr #{{[0-9]+}} {
// CHECK: [[T0:%.*]] = load ptr, ptr
// CHECK-NEXT: [[T2:%.*]] = getelementptr inbounds nuw [[BLOCK_T]], ptr [[T0]], i32 0, i32 5
// CHECK-NEXT: [[T3:%.*]] = load ptr, ptr [[T2]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T3]])
// CHECK-NEXT: ret void
}
void test3(void (^sink)(id*)) {
__strong id strong;
sink(&strong);
// CHECK-LABEL: define{{.*}} void @test3(
// CHECK: [[SINK:%.*]] = alloca ptr
// CHECK-NEXT: [[STRONG:%.*]] = alloca ptr
// CHECK-NEXT: [[TEMP:%.*]] = alloca ptr
// CHECK-NEXT: call ptr @llvm.objc.retain(
// CHECK-NEXT: store ptr {{%.*}}, ptr [[SINK]]
// CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[STRONG]])
// CHECK-NEXT: store ptr null, ptr [[STRONG]]
// CHECK-NEXT: [[BLOCK:%.*]] = load ptr, ptr [[SINK]]
// CHECK-NEXT: getelementptr
// CHECK-NEXT: [[V:%.*]] = load ptr, ptr [[STRONG]]
// CHECK-NEXT: store ptr [[V]], ptr [[TEMP]]
// CHECK-NEXT: [[F0:%.*]] = load ptr, ptr
// CHECK-NEXT: call void [[F0]](ptr noundef [[BLOCK]], ptr noundef [[TEMP]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[TEMP]]
// CHECK-NEXT: [[T1:%.*]] = call ptr @llvm.objc.retain(ptr [[T0]])
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.use(ptr [[V]]) [[NUW]]
// CHECK-NEXT: [[T2:%.*]] = load ptr, ptr [[STRONG]]
// CHECK-NEXT: store ptr [[T1]], ptr [[STRONG]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T2]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[STRONG]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]])
// CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[STRONG]])
// CHECK-NEXT: load ptr, ptr [[SINK]]
// CHECK-NEXT: call void @llvm.objc.release
// CHECK-NEXT: ret void
}
void test4(void) {
id test4_source(void);
void test4_helper(void (^)(void));
__block id var = test4_source();
test4_helper(^{ var = 0; });
// CHECK-LABEL: define{{.*}} void @test4()
// CHECK: [[VAR:%.*]] = alloca [[BYREF_T:%.*]],
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK: [[T0:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr [[VAR]], i32 0, i32 2
// 0x02000000 - has copy/dispose helpers strong
// CHECK-NEXT: store i32 838860800, ptr [[T0]]
// CHECK: [[SLOT:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr [[VAR]], i32 0, i32 6
// CHECK-NEXT: [[T0:%.*]] = call ptr @test4_source() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(ptr [[T0]])
// CHECK-NEXT: store ptr [[T0]], ptr [[SLOT]]
// CHECK-NEXT: [[SLOT:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr [[VAR]], i32 0, i32 6
// 0x42800000 - has signature, copy/dispose helpers, as well as BLOCK_HAS_EXTENDED_LAYOUT
// CHECK: store i32 -1040187392,
// CHECK: store ptr [[VAR]], ptr
// CHECK: call void @test4_helper(
// CHECK: call void @_Block_object_dispose(ptr [[VAR]], i32 8)
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[SLOT]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]])
// CHECK: ret void
// CHECK-LABEL: define internal void @__Block_byref_object_copy_(ptr noundef %0, ptr noundef %1) #{{[0-9]+}} {
// CHECK: [[T0:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr {{%.*}}, i32 0, i32 6
// CHECK-NEXT: load ptr, ptr
// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr {{%.*}}, i32 0, i32 6
// CHECK-NEXT: [[T2:%.*]] = load ptr, ptr [[T1]]
// CHECK-NEXT: store ptr [[T2]], ptr [[T0]]
// CHECK-NEXT: store ptr null, ptr [[T1]]
// CHECK-LABEL: define internal void @__Block_byref_object_dispose_(ptr noundef %0) #{{[0-9]+}} {
// CHECK: [[T0:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr {{%.*}}, i32 0, i32 6
// CHECK-NEXT: [[T1:%.*]] = load ptr, ptr [[T0]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T1]])
// CHECK-LABEL: define internal void @__test4_block_invoke
// CHECK: [[SLOT:%.*]] = getelementptr inbounds nuw {{.*}}, i32 0, i32 6
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[SLOT]], align 8
// CHECK-NEXT: store ptr null, ptr [[SLOT]],
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]])
// CHECK-NEXT: ret void
// CHECK-LABEL: define linkonce_odr hidden void @__copy_helper_block_8_32r(ptr noundef %0, ptr noundef %1) unnamed_addr #{{[0-9]+}} {
// CHECK: call void @_Block_object_assign(ptr {{%.*}}, ptr {{%.*}}, i32 8)
// CHECK-LABEL: define linkonce_odr hidden void @__destroy_helper_block_8_32r(ptr noundef %0) unnamed_addr #{{[0-9]+}} {
// CHECK: call void @_Block_object_dispose(ptr {{%.*}}, i32 8)
}
void test5(void) {
extern id test5_source(void);
void test5_helper(void (^)(void));
__unsafe_unretained id var = test5_source();
test5_helper(^{ (void) var; });
// CHECK-LABEL: define{{.*}} void @test5()
// CHECK: [[VAR:%.*]] = alloca ptr
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[VAR]])
// CHECK: [[T1:%.*]] = call ptr @test5_source() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(ptr [[T1]])
// CHECK-NEXT: store ptr [[T1]], ptr [[VAR]],
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T1]])
// 0x40800000 - has signature but no copy/dispose, as well as BLOCK_HAS_EXTENDED_LAYOUT
// CHECK: store i32 -1073741824, ptr
// CHECK: [[CAPTURE:%.*]] = getelementptr inbounds nuw [[BLOCK_T]], ptr [[BLOCK]], i32 0, i32 5
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[VAR]]
// CHECK-NEXT: store ptr [[T0]], ptr [[CAPTURE]]
// CHECK: call void @test5_helper
// CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[VAR]])
// CHECK-NEXT: ret void
}
void test6(void) {
id test6_source(void);
void test6_helper(void (^)(void));
__block __weak id var = test6_source();
test6_helper(^{ var = 0; });
// CHECK-LABEL: define{{.*}} void @test6()
// CHECK: [[VAR:%.*]] = alloca [[BYREF_T:%.*]],
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[VAR]])
// CHECK: [[T0:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr [[VAR]], i32 0, i32 2
// 0x02000000 - has copy/dispose helpers weak
// CHECK-NEXT: store i32 1107296256, ptr [[T0]]
// CHECK: [[SLOT:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr [[VAR]], i32 0, i32 6
// CHECK-NEXT: [[T1:%.*]] = call ptr @test6_source() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(ptr [[T1]])
// CHECK-NEXT: call ptr @llvm.objc.initWeak(ptr [[SLOT]], ptr [[T1]])
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T1]])
// CHECK-NEXT: [[SLOT:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr [[VAR]], i32 0, i32 6
// 0x42800000 - has signature, copy/dispose helpers, as well as BLOCK_HAS_EXTENDED_LAYOUT
// CHECK: store i32 -1040187392,
// CHECK: %[[BLOCK_DESCRIPTOR:.*]] = getelementptr inbounds nuw <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %{{.*}}, i32 0, i32 4
// CHECK: store ptr @[[BLOCK_DESCRIPTOR_TMP9]], ptr %[[BLOCK_DESCRIPTOR]], align 8
// CHECK: store ptr [[VAR]], ptr
// CHECK: call void @test6_helper(
// CHECK: call void @_Block_object_dispose(ptr [[VAR]], i32 8)
// CHECK-NEXT: call void @llvm.objc.destroyWeak(ptr [[SLOT]])
// CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[VAR]])
// CHECK-NEXT: ret void
// CHECK-LABEL: define internal void @__Block_byref_object_copy_.{{[0-9]+}}(ptr noundef %0, ptr noundef %1) #{{[0-9]+}} {
// CHECK: [[T0:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr {{%.*}}, i32 0, i32 6
// CHECK-NEXT: load ptr, ptr
// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr {{%.*}}, i32 0, i32 6
// CHECK-NEXT: call void @llvm.objc.moveWeak(ptr [[T0]], ptr [[T1]])
// CHECK-LABEL: define internal void @__Block_byref_object_dispose_.{{[0-9]+}}(ptr noundef %0) #{{[0-9]+}} {
// CHECK: [[T0:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr {{%.*}}, i32 0, i32 6
// CHECK-NEXT: call void @llvm.objc.destroyWeak(ptr [[T0]])
// CHECK-LABEL: define internal void @__test6_block_invoke
// CHECK: [[SLOT:%.*]] = getelementptr inbounds nuw {{.*}}, i32 0, i32 6
// CHECK-NEXT: call ptr @llvm.objc.storeWeak(ptr [[SLOT]], ptr null)
// CHECK-NEXT: ret void
}
void test7(void) {
id test7_source(void);
void test7_helper(void (^)(void));
void test7_consume(id);
__weak id var = test7_source();
test7_helper(^{ test7_consume(var); });
// CHECK-LABEL: define{{.*}} void @test7()
// CHECK: [[VAR:%.*]] = alloca ptr,
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK: [[T1:%.*]] = call ptr @test7_source() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(ptr [[T1]])
// CHECK-NEXT: call ptr @llvm.objc.initWeak(ptr [[VAR]], ptr [[T1]])
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T1]])
// 0x42800000 - has signature, copy/dispose helpers, as well as BLOCK_HAS_EXTENDED_LAYOUT
// CHECK: store i32 -1040187392,
// CHECK: [[SLOT:%.*]] = getelementptr inbounds nuw [[BLOCK_T]], ptr [[BLOCK]], i32 0, i32 5
// CHECK-NEXT: call void @llvm.objc.copyWeak(ptr [[SLOT]], ptr [[VAR]])
// CHECK: call void @test7_helper(
// CHECK-NEXT: call void @llvm.objc.destroyWeak(ptr {{%.*}})
// CHECK-NEXT: call void @llvm.objc.destroyWeak(ptr [[VAR]])
// CHECK: ret void
// CHECK-LABEL: define internal void @__test7_block_invoke
// CHECK: [[SLOT:%.*]] = getelementptr inbounds nuw [[BLOCK_T]], ptr {{%.*}}, i32 0, i32 5
// CHECK-NEXT: [[T0:%.*]] = call ptr @llvm.objc.loadWeakRetained(ptr [[SLOT]])
// CHECK-NEXT: call void @test7_consume(ptr noundef [[T0]])
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]])
// CHECK: ret void
// CHECK-LABEL: define linkonce_odr hidden void @__copy_helper_block_8_32w(ptr noundef %0, ptr noundef %1) unnamed_addr #{{[0-9]+}} {
// CHECK: getelementptr
// CHECK-NEXT: getelementptr
// CHECK-NEXT: call void @llvm.objc.copyWeak(
// CHECK-LABEL: define linkonce_odr hidden void @__destroy_helper_block_8_32w(ptr noundef %0) unnamed_addr #{{[0-9]+}} {
// CHECK: getelementptr
// CHECK-NEXT: call void @llvm.objc.destroyWeak(
}
@interface Test8 @end
@implementation Test8
- (void) test {
// CHECK: define internal void @"\01-[Test8 test]"
// CHECK: [[SELF:%.*]] = alloca ptr,
// CHECK-NEXT: alloca ptr
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK: store
// CHECK-NEXT: store
// CHECK: [[T0:%.*]] = getelementptr inbounds nuw [[BLOCK_T]], ptr [[BLOCK]], i32 0, i32 5
// CHECK-NEXT: [[T1:%.*]] = load ptr, ptr [[SELF]],
// CHECK-NEXT: store ptr [[T1]], ptr [[T0]]
// CHECK: call void @test8_helper(
// CHECK-NEXT: [[T2:%.*]] = load ptr, ptr [[T0]]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.use(ptr [[T2]])
// CHECK: ret void
extern void test8_helper(void (^)(void));
test8_helper(^{ (void) self; });
}
@end
id test9(void) {
typedef id __attribute__((ns_returns_retained)) blocktype(void);
extern void test9_consume_block(blocktype^);
return ^blocktype {
extern id test9_produce(void);
return test9_produce();
}();
// CHECK-LABEL: define{{.*}} ptr @test9(
// CHECK: load ptr, ptr getelementptr
// CHECK-NEXT: call ptr
// CHECK-NEXT: tail call ptr @llvm.objc.autoreleaseReturnValue
// CHECK-NEXT: ret ptr
// CHECK: call ptr @test9_produce() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(
// CHECK-NEXT: ret ptr
}
// Test that we correctly initialize __block variables
// when the initialization captures the variable.
void test10a(void) {
__block void (^block)(void) = ^{ block(); };
// CHECK-LABEL: define{{.*}} void @test10a()
// CHECK: [[BYREF:%.*]] = alloca [[BYREF_T:%.*]],
// CHECK-NOHEAP: [[BLOCK1:%.*]] = alloca <{ ptr, i32, i32, ptr, ptr, ptr }>, align 8
// Zero-initialization before running the initializer.
// CHECK: [[T0:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr [[BYREF]], i32 0, i32 6
// CHECK-NEXT: store ptr null, ptr [[T0]], align 8
// Run the initializer as an assignment.
// CHECK-HEAP: [[T1:%.*]] = call ptr @llvm.objc.retainBlock(ptr {{%.*}})
// CHECK: [[T3:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr [[BYREF]], i32 0, i32 1
// CHECK-NEXT: [[T4:%.*]] = load ptr, ptr [[T3]]
// CHECK-NEXT: [[T5:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr [[T4]], i32 0, i32 6
// CHECK-NEXT: [[T6:%.*]] = load ptr, ptr [[T5]], align 8
// CHECK-HEAP-NEXT: store ptr {{%.*}}, ptr [[T5]], align 8
// CHECK-NOHEAP-NEXT: store ptr [[BLOCK1]], ptr [[T5]], align 8
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T6]])
// Destroy at end of function.
// CHECK-NEXT: [[SLOT:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr [[BYREF]], i32 0, i32 6
// CHECK-NEXT: call void @_Block_object_dispose(ptr [[BYREF]], i32 8)
// CHECK-NEXT: [[T1:%.*]] = load ptr, ptr [[SLOT]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T1]])
// CHECK: ret void
}
// do this copy and dispose with objc_retainBlock/release instead of
// _Block_object_assign/destroy. We can also use _Block_object_assign/destroy
// with BLOCK_FIELD_IS_BLOCK as long as we don't pass BLOCK_BYREF_CALLER.
// CHECK-LABEL: define internal void @__Block_byref_object_copy_.{{[0-9]+}}(ptr noundef %0, ptr noundef %1) #{{[0-9]+}} {
// CHECK: [[D0:%.*]] = load ptr, ptr {{%.*}}
// CHECK-NEXT: [[D2:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr [[D0]], i32 0, i32 6
// CHECK-NEXT: [[S0:%.*]] = load ptr, ptr {{%.*}}
// CHECK-NEXT: [[S2:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr [[S0]], i32 0, i32 6
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[S2]], align 8
// CHECK-NEXT: [[T2:%.*]] = call ptr @llvm.objc.retainBlock(ptr [[T0]])
// CHECK-NEXT: store ptr [[T2]], ptr [[D2]], align 8
// CHECK: ret void
// CHECK-LABEL: define internal void @__Block_byref_object_dispose_.{{[0-9]+}}(ptr noundef %0) #{{[0-9]+}} {
// CHECK: [[T0:%.*]] = load ptr, ptr {{%.*}}
// CHECK-NEXT: [[T2:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr [[T0]], i32 0, i32 6
// CHECK-NEXT: [[T3:%.*]] = load ptr, ptr [[T2]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T3]])
// CHECK-NEXT: ret void
// Test that we correctly assign to __block variables when the
// assignment captures the variable.
void test10b(void) {
__block void (^block)(void);
block = ^{ block(); };
// CHECK-LABEL: define{{.*}} void @test10b()
// CHECK: [[BYREF:%.*]] = alloca [[BYREF_T:%.*]],
// CHECK-NOHEAP: [[BLOCK3:%.*]] = alloca <{ ptr, i32, i32, ptr, ptr, ptr }>, align 8
// Zero-initialize.
// CHECK: [[T0:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr [[BYREF]], i32 0, i32 6
// CHECK-NEXT: store ptr null, ptr [[T0]], align 8
// CHECK-NEXT: [[SLOT:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr [[BYREF]], i32 0, i32 6
// The assignment.
// CHECK-HEAP: [[T1:%.*]] = call ptr @llvm.objc.retainBlock(ptr {{%.*}})
// CHECK: [[T3:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr [[BYREF]], i32 0, i32 1
// CHECK-NEXT: [[T4:%.*]] = load ptr, ptr [[T3]]
// CHECK-NEXT: [[T5:%.*]] = getelementptr inbounds nuw [[BYREF_T]], ptr [[T4]], i32 0, i32 6
// CHECK-NEXT: [[T6:%.*]] = load ptr, ptr [[T5]], align 8
// CHECK-HEAP-NEXT: store ptr {{%.*}}, ptr [[T5]], align 8
// CHECK-NOHEAP-NEXT: store ptr [[BLOCK3]], ptr [[T5]], align 8
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T6]])
// Destroy at end of function.
// CHECK-NEXT: call void @_Block_object_dispose(ptr [[BYREF]], i32 8)
// CHECK-NEXT: [[T1:%.*]] = load ptr, ptr [[SLOT]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T1]])
// CHECK: ret void
}
void test11_helper(id);
void test11a(void) {
int x;
test11_helper(^{ (void) x; });
// CHECK-LABEL: define{{.*}} void @test11a()
// CHECK: [[X:%.*]] = alloca i32, align 4
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]], align 8
// CHECK: [[T2:%.*]] = call ptr @llvm.objc.retainBlock(ptr [[BLOCK]])
// CHECK-NEXT: call void @test11_helper(ptr noundef [[T2]])
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T2]])
// CHECK: ret void
}
void test11b(void) {
int x;
id b = ^{ (void) x; };
// CHECK-LABEL: define{{.*}} void @test11b()
// CHECK: [[X:%.*]] = alloca i32, align 4
// CHECK-NEXT: [[B:%.*]] = alloca ptr, align 8
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]], align 8
// CHECK: [[T2:%.*]] = call ptr @llvm.objc.retainBlock(ptr [[BLOCK]])
// CHECK-NEXT: store ptr [[T2]], ptr [[B]], align 8
// CHECK-NEXT: [[T5:%.*]] = load ptr, ptr [[B]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T5]])
// CHECK: ret void
}
@interface Test12
@property (strong) void(^ablock)(void);
@property (nonatomic, strong) void(^nblock)(void);
@end
@implementation Test12
@synthesize ablock, nblock;
// CHECK: define internal ptr @"\01-[Test12 ablock]"(
// CHECK: call ptr @objc_getProperty(ptr noundef {{%.*}}, ptr noundef {{%.*}}, i64 noundef 0, i1 noundef zeroext true)
// CHECK: define internal void @"\01-[Test12 setAblock:]"(
// CHECK: call void @objc_setProperty(ptr noundef {{%.*}}, ptr noundef {{%.*}}, i64 noundef 0, ptr noundef {{%.*}}, i1 noundef zeroext true, i1 noundef zeroext true)
// CHECK: define internal ptr @"\01-[Test12 nblock]"(
// CHECK: %add.ptr = getelementptr inbounds i8, ptr %0, i64 8
// CHECK: define internal void @"\01-[Test12 setNblock:]"(
// CHECK: call void @objc_setProperty(ptr noundef {{%.*}}, ptr noundef {{%.*}}, i64 noundef 8, ptr noundef {{%.*}}, i1 noundef zeroext false, i1 noundef zeroext true)
@end
void test13(id x) {
extern void test13_helper(id);
extern void test13_use(void(^)(void));
void (^b)(void) = (x ? ^{test13_helper(x);} : 0);
test13_use(b);
// CHECK-LABEL: define{{.*}} void @test13(
// CHECK: [[X:%.*]] = alloca ptr, align 8
// CHECK-NEXT: [[B:%.*]] = alloca ptr, align 8
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:.*]], align 8
// CHECK-NEXT: [[COND_CLEANUP_SAVE:%.*]] = alloca ptr,
// CHECK-NEXT: [[CLEANUP_ACTIVE:%.*]] = alloca i1
// CHECK-NEXT: [[T0:%.*]] = call ptr @llvm.objc.retain(ptr {{%.*}})
// CHECK-NEXT: store ptr [[T0]], ptr [[X]], align 8
// CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[B]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[X]], align 8
// CHECK-NEXT: [[T1:%.*]] = icmp ne ptr [[T0]], null
// CHECK-NEXT: store i1 false, ptr [[CLEANUP_ACTIVE]]
// CHECK-NEXT: br i1 [[T1]],
// CHECK-NOT: br
// CHECK: [[CAPTURE:%.*]] = getelementptr inbounds nuw [[BLOCK_T]], ptr [[BLOCK]], i32 0, i32 5
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[X]], align 8
// CHECK-NEXT: [[T1:%.*]] = call ptr @llvm.objc.retain(ptr [[T0]])
// CHECK-NEXT: store ptr [[T1]], ptr [[CAPTURE]], align 8
// CHECK-NEXT: store ptr [[CAPTURE]], ptr [[COND_CLEANUP_SAVE]], align 8
// CHECK-NEXT: store i1 true, ptr [[CLEANUP_ACTIVE]]
// CHECK-NEXT: br label
// CHECK: br label
// CHECK: [[T0:%.*]] = phi ptr
// CHECK-NEXT: [[T2:%.*]] = call ptr @llvm.objc.retainBlock(ptr [[T0]])
// CHECK-NEXT: store ptr [[T2]], ptr [[B]], align 8
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[B]], align 8
// CHECK-NEXT: call void @test13_use(ptr noundef [[T0]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[B]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]])
// CHECK-NEXT: [[T0:%.*]] = load i1, ptr [[CLEANUP_ACTIVE]]
// CHECK-NEXT: br i1 [[T0]]
// CHECK: [[V12:%.*]] = load ptr, ptr [[COND_CLEANUP_SAVE]], align 8
// CHECK: [[T0:%.*]] = load ptr, ptr [[V12]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]])
// CHECK-NEXT: br label
// CHECK: call void @llvm.lifetime.end.p0(ptr [[B]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[X]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]])
// CHECK-NEXT: ret void
}
void test14(void) {
void (^const x[1])(void) = { ^{} };
}
// Don't make invalid ASTs and crash.
void test15_helper(void (^block)(void), int x);
void test15(int a) {
test15_helper(^{ (void) a; }, ({ a; }));
}
void test16(void) {
void (^BLKVAR)(void) = ^{ BLKVAR(); };
// CHECK-LABEL: define{{.*}} void @test16(
// CHECK: [[BLKVAR:%.*]] = alloca ptr, align 8
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[BLKVAR]])
// CHECK-NEXT: store ptr null, ptr [[BLKVAR]], align 8
}
// This is an intentional exception to our conservative jump-scope
// checking for full-expressions containing block literals with
// non-trivial cleanups: if the block literal appears in the operand
// of a return statement, there's no need to extend its lifetime.
id (^test17(id self, int which))(void) {
switch (which) {
case 1: return ^{ return self; };
case 0: return ^{ return self; };
}
return (void*) 0;
}
// CHECK-LABEL: define{{.*}} ptr @test17(
// CHECK: [[RET:%.*]] = alloca ptr, align
// CHECK-NEXT: [[SELF:%.*]] = alloca ptr,
// CHECK: [[B0:%.*]] = alloca [[BLOCK:<.*>]], align
// CHECK: [[B1:%.*]] = alloca [[BLOCK]], align
// CHECK: [[T0:%.*]] = call ptr @llvm.objc.retain(ptr
// CHECK-NEXT: store ptr [[T0]], ptr [[SELF]], align
// CHECK-NOT: objc_retain
// CHECK-NOT: objc_release
// CHECK: [[CAPTURED:%.*]] = getelementptr inbounds nuw [[BLOCK]], ptr [[B0]], i32 0, i32 5
// CHECK-NEXT: [[T1:%.*]] = load ptr, ptr [[SELF]], align
// CHECK-NEXT: [[T2:%.*]] = call ptr @llvm.objc.retain(ptr [[T1]])
// CHECK-NEXT: store ptr [[T2]], ptr [[CAPTURED]],
// CHECK-NEXT: [[T2:%.*]] = call ptr @llvm.objc.retainBlock(ptr [[B0]])
// CHECK-NEXT: store ptr [[T2]], ptr [[RET]]
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[CAPTURED]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]])
// CHECK-NEXT: store i32
// CHECK-NEXT: br label
// CHECK-NOT: objc_retain
// CHECK-NOT: objc_release
// CHECK: [[CAPTURED:%.*]] = getelementptr inbounds nuw [[BLOCK]], ptr [[B1]], i32 0, i32 5
// CHECK-NEXT: [[T1:%.*]] = load ptr, ptr [[SELF]], align
// CHECK-NEXT: [[T2:%.*]] = call ptr @llvm.objc.retain(ptr [[T1]])
// CHECK-NEXT: store ptr [[T2]], ptr [[CAPTURED]],
// CHECK-NEXT: [[T2:%.*]] = call ptr @llvm.objc.retainBlock(ptr [[B1]])
// CHECK-NEXT: store ptr [[T2]], ptr [[RET]]
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[CAPTURED]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]])
// CHECK-NEXT: store i32
// CHECK-NEXT: br label
void test18(id x) {
// CHECK-UNOPT-LABEL: define{{.*}} void @test18(
// CHECK-UNOPT: [[X:%.*]] = alloca ptr,
// CHECK-UNOPT-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-UNOPT-NEXT: store ptr null, ptr [[X]]
// CHECK-UNOPT-NEXT: call void @llvm.objc.storeStrong(ptr [[X]],
// CHECK-UNOPT: %[[BLOCK_DESCRIPTOR:.*]] = getelementptr inbounds nuw [[BLOCK_T]], ptr [[BLOCK]], i32 0, i32 4
// CHECK-UNOPT: store ptr @[[BLOCK_DESCRIPTOR_TMP44]], ptr %[[BLOCK_DESCRIPTOR]], align 8
// CHECK-UNOPT: [[SLOT:%.*]] = getelementptr inbounds nuw [[BLOCK_T]], ptr [[BLOCK]], i32 0, i32 5
// CHECK-UNOPT-NEXT: [[T0:%.*]] = load ptr, ptr [[X]],
// CHECK-UNOPT-NEXT: [[T1:%.*]] = call ptr @llvm.objc.retain(ptr [[T0]])
// CHECK-UNOPT-NEXT: store ptr [[T1]], ptr [[SLOT]],
// CHECK-UNOPT-NEXT: call void @test18_helper(
// CHECK-UNOPT-NEXT: call void @llvm.objc.storeStrong(ptr [[SLOT]], ptr null) [[NUW:#[0-9]+]]
// CHECK-UNOPT-NEXT: call void @llvm.objc.storeStrong(ptr [[X]], ptr null) [[NUW]]
// CHECK-UNOPT-NEXT: ret void
extern void test18_helper(id (^)(void));
test18_helper(^{ return x; });
}
// Ensure that we don't emit helper code in copy/dispose routines for variables
// that are const-captured.
void testUnsafeUnretainedLifetimeInCopyAndDestroyHelpers(id x, id y) {
id __unsafe_unretained unsafeObject = x;
(^ { testUnsafeUnretainedLifetimeInCopyAndDestroyHelpers(x, unsafeObject); })();
}
// CHECK-LABEL: define{{.*}} void @testUnsafeUnretainedLifetimeInCopyAndDestroyHelpers
// %[[BLOCK_DESCRIPTOR:.*]] = getelementptr inbounds nuw <{ ptr, i32, i32, ptr, ptr, ptr, ptr }>, ptr %{{.*}}, i32 0, i32 4
// CHECK: store ptr @[[BLOCK_DESCRIPTOR_TMP46]], ptr %[[BLOCK_DESCRIPTOR]], align 8
// CHECK-LABEL: define internal void @__testUnsafeUnretainedLifetimeInCopyAndDestroyHelpers_block_invoke
// CHECK-UNOPT-LABEL: define internal void @__testUnsafeUnretainedLifetimeInCopyAndDestroyHelpers_block_invoke
void test19_sink(void (^)(int));
void test19(void (^b)(void)) {
// CHECK-LABEL: define{{.*}} void @test19(
// Prologue.
// CHECK: [[B:%.*]] = alloca ptr,
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-NEXT: [[T1:%.*]] = call ptr @llvm.objc.retain(ptr {{%.*}})
// CHECK-NEXT: store ptr [[T1]], ptr [[B]]
// Block setup. We skip most of this. Note the bare retain.
// CHECK: %[[BLOCK_DESCRIPTOR:.*]] = getelementptr inbounds nuw [[BLOCK_T]], ptr [[BLOCK]], i32 0, i32 4
// CHECK: store ptr @[[BLOCK_DESCRIPTOR_TMP48]], ptr %[[BLOCK_DESCRIPTOR]], align 8
// CHECK: [[SLOT:%.*]] = getelementptr inbounds nuw [[BLOCK_T]], ptr [[BLOCK]], i32 0, i32 5
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[B]],
// CHECK-NEXT: [[T2:%.*]] = call ptr @llvm.objc.retain(ptr [[T0]])
// CHECK-NEXT: store ptr [[T2]], ptr [[SLOT]],
// Call.
// CHECK-NEXT: call void @test19_sink(ptr noundef [[BLOCK]])
test19_sink(^(int x) { b(); });
// Block teardown.
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[SLOT]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]])
// Local cleanup.
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[B]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]])
// CHECK-NEXT: ret void
}
// CHECK-LABEL: define{{.*}} void @test20(
// CHECK: [[XADDR:%.*]] = alloca ptr
// CHECK-NEXT: [[BLOCK:%.*]] = alloca <[[BLOCKTY:.*]]>
// CHECK-NEXT: [[RETAINEDX:%.*]] = call ptr @llvm.objc.retain(ptr %{{.*}})
// CHECK-NEXT: store ptr [[RETAINEDX]], ptr [[XADDR]]
// CHECK: [[BLOCKCAPTURED:%.*]] = getelementptr inbounds nuw <[[BLOCKTY]]>, ptr [[BLOCK]], i32 0, i32 5
// CHECK: [[CAPTURED:%.*]] = load ptr, ptr [[XADDR]]
// CHECK: store ptr [[CAPTURED]], ptr [[BLOCKCAPTURED]]
// CHECK: [[CAPTURE:%.*]] = load ptr, ptr [[BLOCKCAPTURED]]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.use(ptr [[CAPTURE]])
// CHECK-NEXT: [[X:%.*]] = load ptr, ptr [[XADDR]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[X]])
// CHECK-NEXT: ret void
// CHECK-UNOPT-LABEL: define{{.*}} void @test20(
// CHECK-UNOPT: [[XADDR:%.*]] = alloca ptr
// CHECK-UNOPT-NEXT: [[BLOCK:%.*]] = alloca <[[BLOCKTY:.*]]>
// CHECK-UNOPT: [[BLOCKCAPTURED:%.*]] = getelementptr inbounds nuw <[[BLOCKTY]]>, ptr [[BLOCK]], i32 0, i32 5
// CHECK-UNOPT: [[CAPTURED:%.*]] = load ptr, ptr [[XADDR]]
// CHECK-UNOPT: [[RETAINED:%.*]] = call ptr @llvm.objc.retain(ptr [[CAPTURED]])
// CHECK-UNOPT: store ptr [[RETAINED]], ptr [[BLOCKCAPTURED]]
// CHECK-UNOPT: call void @llvm.objc.storeStrong(ptr [[BLOCKCAPTURED]], ptr null)
void test20_callee(void (^)(void));
void test20(const id x) {
test20_callee(^{ (void)x; });
}
// CHECK-LABEL: define{{.*}} void @test21(
// CHECK: %[[V6:.*]] = call ptr @llvm.objc.retainBlock(
// CHECK: call void (i32, ...) @test21_callee(i32 noundef 1, ptr noundef %[[V6]]),
void test21_callee(int n, ...);
void test21(id x) {
test21_callee(1, ^{ (void)x; });
}
// The lifetime of 'x', which is captured by the block in the statement
// expression, should be extended.
// CHECK-COMMON-LABEL: define{{.*}} ptr @test22(
// CHECK-COMMON: %[[BLOCK_CAPTURED:.*]] = getelementptr inbounds nuw <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %{{.*}}, i32 0, i32 5
// CHECK-COMMON: %[[V3:.*]] = call ptr @llvm.objc.retain(ptr %{{.*}})
// CHECK-COMMON: store ptr %[[V3]], ptr %[[BLOCK_CAPTURED]], align 8
// CHECK-COMMON: call void @test22_1()
// CHECK-UNOPT: call void @llvm.objc.storeStrong(ptr %[[BLOCK_CAPTURED]], ptr null)
// CHECK: %[[V15:.*]] = load ptr, ptr %[[BLOCK_CAPTURED]], align 8
// CHECK: call void @llvm.objc.release(ptr %[[V15]])
id test22(int c, id x) {
extern id test22_0(void);
extern void test22_1(void);
return c ? test22_0() : ({ id (^b)(void) = ^{ return x; }; test22_1(); b(); });
}
@interface Test23
-(void)m:(int)i, ...;
@end
// CHECK-COMMON-LABEL: define{{.*}} void @test23(
// CHECK-COMMON: %[[V9:.*]] = call ptr @llvm.objc.retainBlock(
// CHECK-COMMON: call void (ptr, ptr, i32, ...) @objc_msgSend(ptr noundef %{{.*}}, ptr noundef %{{.*}}, i32 noundef 123, ptr noundef %[[V9]])
void test23(id x, Test23 *t) {
[t m:123, ^{ (void)x; }];
}
// CHECK-COMMON-LABEL: define internal void @"\01+[Test24 m]"(
// CHECK-COMMON: %[[BLOCK_DESCRIPTOR:.*]] = getelementptr inbounds nuw <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %{{.*}}, i32 0, i32 4
// CHECK: store ptr @[[BLOCK_DESCRIPTOR_TMP10]], ptr %[[BLOCK_DESCRIPTOR]],
@interface Test24
@property (class) void (^block)(void);
+(void)m;
@end
@implementation Test24
+(void)m {
self.block = ^{ (void)self; };
}
@end
// CHECK: attributes [[NUW]] = { nounwind }
// CHECK-UNOPT: attributes [[NUW]] = { nounwind }
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