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clang-p2996/clang/test/CodeGenObjC/arc-blocks.m
Walter Lee 66c6bbe7ff Put code that avoids heapifying local blocks behind a flag 
This change puts the functionality in commit
c5792aa90f behind a flag that is off by
default.  The original commit is not in Apple's Clang fork (and blocks
are an Apple extension in the first place), and there is one known
issue that needs to be addressed before it can be enabled safely.

Differential Revision: https://reviews.llvm.org/D108243
2021-09-14 14:06:05 -04:00

774 lines
39 KiB
Objective-C
Raw Blame History

// 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: %[[STRUCT_BLOCK_DESCRIPTOR:.*]] = type { i64, i64 }
// CHECK-COMMON: @[[BLOCK_DESCRIPTOR_TMP44:.*]] = linkonce_odr hidden unnamed_addr constant { i64, i64, i8*, i8*, i8*, i64 } { i64 0, i64 40, i8* bitcast (void (i8*, i8*)* @__copy_helper_block_8_32s to i8*), i8* bitcast (void (i8*)* @__destroy_helper_block_8_32s to i8*), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @{{.*}}, i32 0, i32 0), i64 256 }, align 8
// CHECK-COMMON: @[[BLOCK_DESCRIPTOR_TMP9:.*]] = linkonce_odr hidden unnamed_addr constant { i64, i64, i8*, i8*, i8*, i64 } { i64 0, i64 40, i8* bitcast (void (i8*, i8*)* @__copy_helper_block_8_32r to i8*), i8* bitcast (void (i8*)* @__destroy_helper_block_8_32r to i8*), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @{{.*}}, i32 0, i32 0), i64 16 }, align 8
// CHECK-COMMON: @[[BLOCK_DESCRIPTOR_TMP46:.*]] = linkonce_odr hidden unnamed_addr constant { i64, i64, i8*, i8*, i8*, i8* } { i64 0, i64 48, i8* bitcast (void (i8*, i8*)* @__copy_helper_block_8_32s to i8*), i8* bitcast (void (i8*)* @__destroy_helper_block_8_32s to i8*), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @{{.*}}, i32 0, i32 0), i8* getelementptr inbounds ([3 x i8], [3 x i8]* @{{.*}}, i32 0, i32 0) }, align 8
// CHECK-COMMON: @[[BLOCK_DESCRIPTOR_TMP48:.*]] = linkonce_odr hidden unnamed_addr constant { i64, i64, i8*, i8*, i8*, i64 } { i64 0, i64 40, i8* bitcast (void (i8*, i8*)* @__copy_helper_block_8_32b to i8*), i8* bitcast (void (i8*)* @__destroy_helper_block_8_32s to i8*), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @{{.*}}, i32 0, i32 0), i64 256 }, align 8
// This shouldn't crash.
void test0(id (^maker)(void)) {
maker();
}
int (^test1(int x))(void) {
// CHECK-LABEL: define{{.*}} i32 ()* @test1(
// CHECK: [[X:%.*]] = alloca i32,
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-NEXT: store i32 {{%.*}}, i32* [[X]]
// CHECK: [[T0:%.*]] = bitcast [[BLOCK_T]]* [[BLOCK]] to i32 ()*
// CHECK-NEXT: [[T1:%.*]] = bitcast i32 ()* [[T0]] to i8*
// CHECK-NEXT: [[T2:%.*]] = call i8* @llvm.objc.retainBlock(i8* [[T1]]) [[NUW:#[0-9]+]]
// CHECK-NEXT: [[T3:%.*]] = bitcast i8* [[T2]] to i32 ()*
// CHECK-NEXT: [[T4:%.*]] = bitcast i32 ()* [[T3]] to i8*
// CHECK-NEXT: [[T5:%.*]] = tail call i8* @llvm.objc.autoreleaseReturnValue(i8* [[T4]]) [[NUW]]
// CHECK-NEXT: [[T6:%.*]] = bitcast i8* [[T5]] to i32 ()*
// CHECK-NEXT: ret i32 ()* [[T6]]
return ^{ return x; };
}
void test2(id x) {
// CHECK-LABEL: define{{.*}} void @test2(
// CHECK: [[X:%.*]] = alloca i8*,
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-NEXT: [[PARM:%.*]] = call i8* @llvm.objc.retain(i8* {{%.*}})
// CHECK-NEXT: store i8* [[PARM]], i8** [[X]]
// CHECK: [[SLOT:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[X]],
// CHECK-NEXT: [[T1:%.*]] = call i8* @llvm.objc.retain(i8* [[T0]])
// CHECK-NEXT: store i8* [[T1]], i8** [[SLOT]],
// CHECK-NEXT: bitcast
// CHECK-NEXT: call void @test2_helper(
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[SLOT]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T0]]) [[NUW]], !clang.imprecise_release
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[X]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[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(i8* %0, i8* %1) unnamed_addr #{{[0-9]+}} {
// CHECK: [[T0:%.*]] = load i8*, i8**
// CHECK-NEXT: [[SRC:%.*]] = bitcast i8* [[T0]] to [[BLOCK_T]]*
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8**
// CHECK-NEXT: [[DST:%.*]] = bitcast i8* [[T0]] to [[BLOCK_T]]*
// CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[SRC]], i32 0, i32 5
// CHECK-NEXT: [[T1:%.*]] = load i8*, i8** [[T0]]
// CHECK-NEXT: [[T2:%.*]] = call i8* @llvm.objc.retain(i8* [[T1]]) [[NUW]]
// CHECK-NEXT: ret void
// CHECK: define linkonce_odr hidden void @__destroy_helper_block_8_32s(i8* %0) unnamed_addr #{{[0-9]+}} {
// CHECK: [[T0:%.*]] = load i8*, i8**
// CHECK-NEXT: [[T1:%.*]] = bitcast i8* [[T0]] to [[BLOCK_T]]*
// CHECK-NEXT: [[T2:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[T1]], i32 0, i32 5
// CHECK-NEXT: [[T3:%.*]] = load i8*, i8** [[T2]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T3]])
// CHECK-NEXT: ret void
}
void test3(void (^sink)(id*)) {
__strong id strong;
sink(&strong);
// CHECK-LABEL: define{{.*}} void @test3(
// CHECK: [[SINK:%.*]] = alloca void (i8**)*
// CHECK-NEXT: [[STRONG:%.*]] = alloca i8*
// CHECK-NEXT: [[TEMP:%.*]] = alloca i8*
// CHECK-NEXT: bitcast void (i8**)* {{%.*}} to i8*
// CHECK-NEXT: call i8* @llvm.objc.retain(
// CHECK-NEXT: bitcast i8*
// CHECK-NEXT: store void (i8**)* {{%.*}}, void (i8**)** [[SINK]]
// CHECK-NEXT: [[STRONGPTR1:%.*]] = bitcast i8** [[STRONG]] to i8*
// CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 8, i8* [[STRONGPTR1]])
// CHECK-NEXT: store i8* null, i8** [[STRONG]]
// CHECK-NEXT: load void (i8**)*, void (i8**)** [[SINK]]
// CHECK-NEXT: bitcast
// CHECK-NEXT: getelementptr
// CHECK-NEXT: [[BLOCK:%.*]] = bitcast
// CHECK-NEXT: [[V:%.*]] = load i8*, i8** [[STRONG]]
// CHECK-NEXT: store i8* [[V]], i8** [[TEMP]]
// CHECK-NEXT: [[F0:%.*]] = load i8*, i8**
// CHECK-NEXT: [[F1:%.*]] = bitcast i8* [[F0]] to void (i8*, i8**)*
// CHECK-NEXT: call void [[F1]](i8* [[BLOCK]], i8** [[TEMP]])
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[TEMP]]
// CHECK-NEXT: [[T1:%.*]] = call i8* @llvm.objc.retain(i8* [[T0]])
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.use(i8* [[V]]) [[NUW]]
// CHECK-NEXT: [[T2:%.*]] = load i8*, i8** [[STRONG]]
// CHECK-NEXT: store i8* [[T1]], i8** [[STRONG]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T2]])
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[STRONG]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T0]])
// CHECK-NEXT: [[STRONGPTR2:%.*]] = bitcast i8** [[STRONG]] to i8*
// CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 8, i8* [[STRONGPTR2]])
// CHECK-NEXT: load void (i8**)*, void (i8**)** [[SINK]]
// CHECK-NEXT: bitcast
// 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 [[BYREF_T]], [[BYREF_T]]* [[VAR]], i32 0, i32 2
// 0x02000000 - has copy/dispose helpers strong
// CHECK-NEXT: store i32 838860800, i32* [[T0]]
// CHECK: [[SLOT:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* [[VAR]], i32 0, i32 6
// CHECK-NEXT: [[T0:%.*]] = call i8* @test4_source()
// CHECK-NEXT: [[T1:%.*]] = notail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* [[T0]])
// CHECK-NEXT: store i8* [[T1]], i8** [[SLOT]]
// CHECK-NEXT: [[SLOT:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* [[VAR]], i32 0, i32 6
// 0x42800000 - has signature, copy/dispose helpers, as well as BLOCK_HAS_EXTENDED_LAYOUT
// CHECK: store i32 -1040187392,
// CHECK: [[T0:%.*]] = bitcast [[BYREF_T]]* [[VAR]] to i8*
// CHECK-NEXT: store i8* [[T0]], i8**
// CHECK: call void @test4_helper(
// CHECK: [[T0:%.*]] = bitcast [[BYREF_T]]* [[VAR]] to i8*
// CHECK-NEXT: call void @_Block_object_dispose(i8* [[T0]], i32 8)
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[SLOT]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T0]])
// CHECK: ret void
// CHECK-LABEL: define internal void @__Block_byref_object_copy_(i8* %0, i8* %1) #{{[0-9]+}} {
// CHECK: [[T0:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* {{%.*}}, i32 0, i32 6
// CHECK-NEXT: load i8*, i8**
// CHECK-NEXT: bitcast i8* {{%.*}} to [[BYREF_T]]*
// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* {{%.*}}, i32 0, i32 6
// CHECK-NEXT: [[T2:%.*]] = load i8*, i8** [[T1]]
// CHECK-NEXT: store i8* [[T2]], i8** [[T0]]
// CHECK-NEXT: store i8* null, i8** [[T1]]
// CHECK-LABEL: define internal void @__Block_byref_object_dispose_(i8* %0) #{{[0-9]+}} {
// CHECK: [[T0:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* {{%.*}}, i32 0, i32 6
// CHECK-NEXT: [[T1:%.*]] = load i8*, i8** [[T0]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T1]])
// CHECK-LABEL: define internal void @__test4_block_invoke
// CHECK: [[SLOT:%.*]] = getelementptr inbounds {{.*}}, i32 0, i32 6
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[SLOT]], align 8
// CHECK-NEXT: store i8* null, i8** [[SLOT]],
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T0]])
// CHECK-NEXT: ret void
// CHECK-LABEL: define linkonce_odr hidden void @__copy_helper_block_8_32r(i8* %0, i8* %1) unnamed_addr #{{[0-9]+}} {
// CHECK: call void @_Block_object_assign(i8* {{%.*}}, i8* {{%.*}}, i32 8)
// CHECK-LABEL: define linkonce_odr hidden void @__destroy_helper_block_8_32r(i8* %0) unnamed_addr #{{[0-9]+}} {
// CHECK: call void @_Block_object_dispose(i8* {{%.*}}, 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 i8*
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-NEXT: [[VARPTR1:%.*]] = bitcast i8** [[VAR]] to i8*
// CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 8, i8* [[VARPTR1]])
// CHECK: [[T0:%.*]] = call i8* @test5_source()
// CHECK-NEXT: [[T1:%.*]] = notail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* [[T0]])
// CHECK-NEXT: store i8* [[T1]], i8** [[VAR]],
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T1]])
// 0x40800000 - has signature but no copy/dispose, as well as BLOCK_HAS_EXTENDED_LAYOUT
// CHECK: store i32 -1073741824, i32*
// CHECK: [[CAPTURE:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[VAR]]
// CHECK-NEXT: store i8* [[T0]], i8** [[CAPTURE]]
// CHECK-NEXT: [[T0:%.*]] = bitcast [[BLOCK_T]]* [[BLOCK]] to
// CHECK: call void @test5_helper
// CHECK-NEXT: [[VARPTR2:%.*]] = bitcast i8** [[VAR]] to i8*
// CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 8, i8* [[VARPTR2]])
// 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: [[VARPTR1:%.*]] = bitcast [[BYREF_T]]* [[VAR]] to i8*
// CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 48, i8* [[VARPTR1]])
// CHECK: [[T0:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* [[VAR]], i32 0, i32 2
// 0x02000000 - has copy/dispose helpers weak
// CHECK-NEXT: store i32 1107296256, i32* [[T0]]
// CHECK: [[SLOT:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* [[VAR]], i32 0, i32 6
// CHECK-NEXT: [[T0:%.*]] = call i8* @test6_source()
// CHECK-NEXT: [[T1:%.*]] = notail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* [[T0]])
// CHECK-NEXT: call i8* @llvm.objc.initWeak(i8** [[SLOT]], i8* [[T1]])
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T1]])
// CHECK-NEXT: [[SLOT:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* [[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 <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>* %{{.*}}, i32 0, i32 4
// CHECK: store %[[STRUCT_BLOCK_DESCRIPTOR]]* bitcast ({ i64, i64, i8*, i8*, i8*, i64 }* @[[BLOCK_DESCRIPTOR_TMP9]] to %[[STRUCT_BLOCK_DESCRIPTOR]]*), %[[STRUCT_BLOCK_DESCRIPTOR]]** %[[BLOCK_DESCRIPTOR]], align 8
// CHECK: [[T0:%.*]] = bitcast [[BYREF_T]]* [[VAR]] to i8*
// CHECK-NEXT: store i8* [[T0]], i8**
// CHECK: call void @test6_helper(
// CHECK: [[T0:%.*]] = bitcast [[BYREF_T]]* [[VAR]] to i8*
// CHECK-NEXT: call void @_Block_object_dispose(i8* [[T0]], i32 8)
// CHECK-NEXT: call void @llvm.objc.destroyWeak(i8** [[SLOT]])
// CHECK-NEXT: [[VARPTR2:%.*]] = bitcast [[BYREF_T]]* [[VAR]] to i8*
// CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 48, i8* [[VARPTR2]])
// CHECK-NEXT: ret void
// CHECK-LABEL: define internal void @__Block_byref_object_copy_.{{[0-9]+}}(i8* %0, i8* %1) #{{[0-9]+}} {
// CHECK: [[T0:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* {{%.*}}, i32 0, i32 6
// CHECK-NEXT: load i8*, i8**
// CHECK-NEXT: bitcast i8* {{%.*}} to [[BYREF_T]]*
// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* {{%.*}}, i32 0, i32 6
// CHECK-NEXT: call void @llvm.objc.moveWeak(i8** [[T0]], i8** [[T1]])
// CHECK-LABEL: define internal void @__Block_byref_object_dispose_.{{[0-9]+}}(i8* %0) #{{[0-9]+}} {
// CHECK: [[T0:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* {{%.*}}, i32 0, i32 6
// CHECK-NEXT: call void @llvm.objc.destroyWeak(i8** [[T0]])
// CHECK-LABEL: define internal void @__test6_block_invoke
// CHECK: [[SLOT:%.*]] = getelementptr inbounds {{.*}}, i32 0, i32 6
// CHECK-NEXT: call i8* @llvm.objc.storeWeak(i8** [[SLOT]], i8* 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 i8*,
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK: [[T0:%.*]] = call i8* @test7_source()
// CHECK-NEXT: [[T1:%.*]] = notail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* [[T0]])
// CHECK-NEXT: call i8* @llvm.objc.initWeak(i8** [[VAR]], i8* [[T1]])
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T1]])
// 0x42800000 - has signature, copy/dispose helpers, as well as BLOCK_HAS_EXTENDED_LAYOUT
// CHECK: store i32 -1040187392,
// CHECK: [[SLOT:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5
// CHECK-NEXT: call void @llvm.objc.copyWeak(i8** [[SLOT]], i8** [[VAR]])
// CHECK: call void @test7_helper(
// CHECK-NEXT: call void @llvm.objc.destroyWeak(i8** {{%.*}})
// CHECK-NEXT: call void @llvm.objc.destroyWeak(i8** [[VAR]])
// CHECK: ret void
// CHECK-LABEL: define internal void @__test7_block_invoke
// CHECK: [[SLOT:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* {{%.*}}, i32 0, i32 5
// CHECK-NEXT: [[T0:%.*]] = call i8* @llvm.objc.loadWeakRetained(i8** [[SLOT]])
// CHECK-NEXT: call void @test7_consume(i8* [[T0]])
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T0]])
// CHECK: ret void
// CHECK-LABEL: define linkonce_odr hidden void @__copy_helper_block_8_32w(i8* %0, i8* %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(i8* %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 [[TEST8:%.*]]*,
// CHECK-NEXT: alloca i8*
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK: store
// CHECK-NEXT: store
// CHECK: [[T0:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5
// CHECK-NEXT: [[T1:%.*]] = load [[TEST8]]*, [[TEST8]]** [[SELF]],
// CHECK-NEXT: store %0* [[T1]], %0** [[T0]]
// CHECK-NEXT: bitcast [[BLOCK_T]]* [[BLOCK]] to
// CHECK: call void @test8_helper(
// CHECK-NEXT: [[T2:%.*]] = load [[TEST8]]*, [[TEST8]]** [[T0]]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.use([[TEST8]]* [[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{{.*}} i8* @test9(
// CHECK: load i8*, i8** getelementptr
// CHECK-NEXT: bitcast i8*
// CHECK-NEXT: call i8*
// CHECK-NEXT: tail call i8* @llvm.objc.autoreleaseReturnValue
// CHECK-NEXT: ret i8*
// CHECK: call i8* @test9_produce()
// CHECK-NEXT: call i8* @llvm.objc.retain
// CHECK-NEXT: ret i8*
}
// rdar://problem/9814099
// 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 <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, align 8
// Zero-initialization before running the initializer.
// CHECK: [[T0:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* [[BYREF]], i32 0, i32 6
// CHECK-NEXT: store void ()* null, void ()** [[T0]], align 8
// Run the initializer as an assignment.
// CHECK-HEAP: [[T0:%.*]] = bitcast void ()* {{%.*}} to i8*
// CHECK-HEAP-NEXT: [[T1:%.*]] = call i8* @llvm.objc.retainBlock(i8* [[T0]])
// CHECK-HEAP-NEXT: [[T2:%.*]] = bitcast i8* [[T1]] to void ()*
// CHECK-NOHEAP: [[T2:%.*]] = bitcast <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>* [[BLOCK1]] to void ()*
// CHECK-NEXT: [[T3:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* [[BYREF]], i32 0, i32 1
// CHECK-NEXT: [[T4:%.*]] = load [[BYREF_T]]*, [[BYREF_T]]** [[T3]]
// CHECK-NEXT: [[T5:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* [[T4]], i32 0, i32 6
// CHECK-NEXT: [[T6:%.*]] = load void ()*, void ()** [[T5]], align 8
// CHECK-HEAP-NEXT: store void ()* {{%.*}}, void ()** [[T5]], align 8
// CHECK-NOHEAP-NEXT: store void ()* [[T2]], void ()** [[T5]], align 8
// CHECK-NEXT: [[T7:%.*]] = bitcast void ()* [[T6]] to i8*
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T7]])
// Destroy at end of function.
// CHECK-NEXT: [[SLOT:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* [[BYREF]], i32 0, i32 6
// CHECK-NEXT: [[T0:%.*]] = bitcast [[BYREF_T]]* [[BYREF]] to i8*
// CHECK-NEXT: call void @_Block_object_dispose(i8* [[T0]], i32 8)
// CHECK-NEXT: [[T1:%.*]] = load void ()*, void ()** [[SLOT]]
// CHECK-NEXT: [[T2:%.*]] = bitcast void ()* [[T1]] to i8*
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T2]])
// CHECK: ret void
}
// <rdar://problem/10402698>: 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]+}}(i8* %0, i8* %1) #{{[0-9]+}} {
// CHECK: [[D0:%.*]] = load i8*, i8** {{%.*}}
// CHECK-NEXT: [[D1:%.*]] = bitcast i8* [[D0]] to [[BYREF_T]]*
// CHECK-NEXT: [[D2:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* [[D1]], i32 0, i32 6
// CHECK-NEXT: [[S0:%.*]] = load i8*, i8** {{%.*}}
// CHECK-NEXT: [[S1:%.*]] = bitcast i8* [[S0]] to [[BYREF_T]]*
// CHECK-NEXT: [[S2:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* [[S1]], i32 0, i32 6
// CHECK-NEXT: [[T0:%.*]] = load void ()*, void ()** [[S2]], align 8
// CHECK-NEXT: [[T1:%.*]] = bitcast void ()* [[T0]] to i8*
// CHECK-NEXT: [[T2:%.*]] = call i8* @llvm.objc.retainBlock(i8* [[T1]])
// CHECK-NEXT: [[T3:%.*]] = bitcast i8* [[T2]] to void ()*
// CHECK-NEXT: store void ()* [[T3]], void ()** [[D2]], align 8
// CHECK: ret void
// CHECK-LABEL: define internal void @__Block_byref_object_dispose_.{{[0-9]+}}(i8* %0) #{{[0-9]+}} {
// CHECK: [[T0:%.*]] = load i8*, i8** {{%.*}}
// CHECK-NEXT: [[T1:%.*]] = bitcast i8* [[T0]] to [[BYREF_T]]*
// CHECK-NEXT: [[T2:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* [[T1]], i32 0, i32 6
// CHECK-NEXT: [[T3:%.*]] = load void ()*, void ()** [[T2]]
// CHECK-NEXT: [[T4:%.*]] = bitcast void ()* [[T3]] to i8*
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T4]])
// 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 <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, align 8
// Zero-initialize.
// CHECK: [[T0:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* [[BYREF]], i32 0, i32 6
// CHECK-NEXT: store void ()* null, void ()** [[T0]], align 8
// CHECK-NEXT: [[SLOT:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* [[BYREF]], i32 0, i32 6
// The assignment.
// CHECK-HEAP: [[T0:%.*]] = bitcast void ()* {{%.*}} to i8*
// CHECK-HEAP-NEXT: [[T1:%.*]] = call i8* @llvm.objc.retainBlock(i8* [[T0]])
// CHECK-HEAP-NEXT: [[T2:%.*]] = bitcast i8* [[T1]] to void ()*
// CHECK-NOHEAP: [[T2:%.*]] = bitcast <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>* [[BLOCK3]] to void ()*
// CHECK-NEXT: [[T3:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* [[BYREF]], i32 0, i32 1
// CHECK-NEXT: [[T4:%.*]] = load [[BYREF_T]]*, [[BYREF_T]]** [[T3]]
// CHECK-NEXT: [[T5:%.*]] = getelementptr inbounds [[BYREF_T]], [[BYREF_T]]* [[T4]], i32 0, i32 6
// CHECK-NEXT: [[T6:%.*]] = load void ()*, void ()** [[T5]], align 8
// CHECK-HEAP-NEXT: store void ()* {{%.*}}, void ()** [[T5]], align 8
// CHECK-NOHEAP-NEXT: store void ()* [[T2]], void ()** [[T5]], align 8
// CHECK-NEXT: [[T7:%.*]] = bitcast void ()* [[T6]] to i8*
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T7]])
// Destroy at end of function.
// CHECK-NEXT: [[T0:%.*]] = bitcast [[BYREF_T]]* [[BYREF]] to i8*
// CHECK-NEXT: call void @_Block_object_dispose(i8* [[T0]], i32 8)
// CHECK-NEXT: [[T1:%.*]] = load void ()*, void ()** [[SLOT]]
// CHECK-NEXT: [[T2:%.*]] = bitcast void ()* [[T1]] to i8*
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T2]])
// CHECK: ret void
}
// rdar://problem/10088932
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: [[T0:%.*]] = bitcast [[BLOCK_T]]* [[BLOCK]] to void ()*
// CHECK-NEXT: [[T1:%.*]] = bitcast void ()* [[T0]] to i8*
// CHECK-NEXT: [[T2:%.*]] = call i8* @llvm.objc.retainBlock(i8* [[T1]])
// CHECK-NEXT: [[T3:%.*]] = bitcast i8* [[T2]] to void ()*
// CHECK-NEXT: [[T4:%.*]] = bitcast void ()* [[T3]] to i8*
// CHECK-NEXT: call void @test11_helper(i8* [[T4]])
// CHECK-NEXT: [[T5:%.*]] = bitcast void ()* [[T3]] to i8*
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T5]])
// 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 i8*, align 8
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]], align 8
// CHECK: [[T0:%.*]] = bitcast [[BLOCK_T]]* [[BLOCK]] to void ()*
// CHECK-NEXT: [[T1:%.*]] = bitcast void ()* [[T0]] to i8*
// CHECK-NEXT: [[T2:%.*]] = call i8* @llvm.objc.retainBlock(i8* [[T1]])
// CHECK-NEXT: [[T3:%.*]] = bitcast i8* [[T2]] to void ()*
// CHECK-NEXT: [[T4:%.*]] = bitcast void ()* [[T3]] to i8*
// CHECK-NEXT: store i8* [[T4]], i8** [[B]], align 8
// CHECK-NEXT: [[T5:%.*]] = load i8*, i8** [[B]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T5]])
// CHECK: ret void
}
// rdar://problem/9979150
@interface Test12
@property (strong) void(^ablock)(void);
@property (nonatomic, strong) void(^nblock)(void);
@end
@implementation Test12
@synthesize ablock, nblock;
// CHECK: define internal void ()* @"\01-[Test12 ablock]"(
// CHECK: call i8* @objc_getProperty(i8* {{%.*}}, i8* {{%.*}}, i64 {{%.*}}, i1 zeroext true)
// CHECK: define internal void @"\01-[Test12 setAblock:]"(
// CHECK: call void @objc_setProperty(i8* {{%.*}}, i8* {{%.*}}, i64 {{%.*}}, i8* {{%.*}}, i1 zeroext true, i1 zeroext true)
// CHECK: define internal void ()* @"\01-[Test12 nblock]"(
// CHECK: %add.ptr = getelementptr inbounds i8, i8* %1, i64 %ivar
// CHECK: define internal void @"\01-[Test12 setNblock:]"(
// CHECK: call void @objc_setProperty(i8* {{%.*}}, i8* {{%.*}}, i64 {{%.*}}, i8* {{%.*}}, i1 zeroext false, i1 zeroext true)
@end
// rdar://problem/10131784
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 i8*, align 8
// CHECK-NEXT: [[B:%.*]] = alloca void ()*, align 8
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:.*]], align 8
// CHECK-NEXT: [[CLEANUP_ACTIVE:%.*]] = alloca i1
// CHECK-NEXT: [[COND_CLEANUP_SAVE:%.*]] = alloca i8**,
// CHECK-NEXT: [[T0:%.*]] = call i8* @llvm.objc.retain(i8* {{%.*}})
// CHECK-NEXT: store i8* [[T0]], i8** [[X]], align 8
// CHECK-NEXT: [[BPTR1:%.*]] = bitcast void ()** [[B]] to i8*
// CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 8, i8* [[BPTR1]])
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[X]], align 8
// CHECK-NEXT: [[T1:%.*]] = icmp ne i8* [[T0]], null
// CHECK-NEXT: store i1 false, i1* [[CLEANUP_ACTIVE]]
// CHECK-NEXT: br i1 [[T1]],
// CHECK-NOT: br
// CHECK: [[CAPTURE:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[X]], align 8
// CHECK-NEXT: [[T1:%.*]] = call i8* @llvm.objc.retain(i8* [[T0]])
// CHECK-NEXT: store i8* [[T1]], i8** [[CAPTURE]], align 8
// CHECK-NEXT: store i1 true, i1* [[CLEANUP_ACTIVE]]
// CHECK-NEXT: store i8** [[CAPTURE]], i8*** [[COND_CLEANUP_SAVE]], align 8
// CHECK-NEXT: bitcast [[BLOCK_T]]* [[BLOCK]] to void ()*
// CHECK-NEXT: br label
// CHECK: br label
// CHECK: [[T0:%.*]] = phi void ()*
// CHECK-NEXT: [[T1:%.*]] = bitcast void ()* [[T0]] to i8*
// CHECK-NEXT: [[T2:%.*]] = call i8* @llvm.objc.retainBlock(i8* [[T1]])
// CHECK-NEXT: [[T3:%.*]] = bitcast i8* [[T2]] to void ()*
// CHECK-NEXT: store void ()* [[T3]], void ()** [[B]], align 8
// CHECK-NEXT: [[T0:%.*]] = load void ()*, void ()** [[B]], align 8
// CHECK-NEXT: call void @test13_use(void ()* [[T0]])
// CHECK-NEXT: [[T0:%.*]] = load void ()*, void ()** [[B]]
// CHECK-NEXT: [[T1:%.*]] = bitcast void ()* [[T0]] to i8*
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T1]])
// CHECK-NEXT: [[T0:%.*]] = load i1, i1* [[CLEANUP_ACTIVE]]
// CHECK-NEXT: br i1 [[T0]]
// CHECK: [[V12:%.*]] = load i8**, i8*** [[COND_CLEANUP_SAVE]], align 8
// CHECK: [[T0:%.*]] = load i8*, i8** [[V12]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T0]])
// CHECK-NEXT: br label
// CHECK: [[BPTR2:%.*]] = bitcast void ()** [[B]] to i8*
// CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 8, i8* [[BPTR2]])
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[X]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T0]])
// CHECK-NEXT: ret void
}
// <rdar://problem/10907510>
void test14() {
void (^const x[1])(void) = { ^{} };
}
// rdar://11149025
// Don't make invalid ASTs and crash.
void test15_helper(void (^block)(void), int x);
void test15(int a) {
test15_helper(^{ (void) a; }, ({ a; }));
}
// rdar://11016025
void test16() {
void (^BLKVAR)(void) = ^{ BLKVAR(); };
// CHECK-LABEL: define{{.*}} void @test16(
// CHECK: [[BLKVAR:%.*]] = alloca void ()*, align 8
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-NEXT: [[BLKVARPTR1:%.*]] = bitcast void ()** [[BLKVAR]] to i8*
// CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 8, i8* [[BLKVARPTR1]])
// CHECK-NEXT: store void ()* null, void ()** [[BLKVAR]], align 8
}
// rdar://12151005
//
// 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{{.*}} i8* ()* @test17(
// CHECK: [[RET:%.*]] = alloca i8* ()*, align
// CHECK-NEXT: [[SELF:%.*]] = alloca i8*,
// CHECK: [[B0:%.*]] = alloca [[BLOCK:<.*>]], align
// CHECK: [[B1:%.*]] = alloca [[BLOCK]], align
// CHECK: [[T0:%.*]] = call i8* @llvm.objc.retain(i8*
// CHECK-NEXT: store i8* [[T0]], i8** [[SELF]], align
// CHECK-NOT: objc_retain
// CHECK-NOT: objc_release
// CHECK: [[CAPTURED:%.*]] = getelementptr inbounds [[BLOCK]], [[BLOCK]]* [[B0]], i32 0, i32 5
// CHECK-NEXT: [[T1:%.*]] = load i8*, i8** [[SELF]], align
// CHECK-NEXT: [[T2:%.*]] = call i8* @llvm.objc.retain(i8* [[T1]])
// CHECK-NEXT: store i8* [[T2]], i8** [[CAPTURED]],
// CHECK-NEXT: [[T0:%.*]] = bitcast [[BLOCK]]* [[B0]] to i8* ()*
// CHECK-NEXT: [[T1:%.*]] = bitcast i8* ()* [[T0]] to i8*
// CHECK-NEXT: [[T2:%.*]] = call i8* @llvm.objc.retainBlock(i8* [[T1]])
// CHECK-NEXT: [[T3:%.*]] = bitcast i8* [[T2]] to i8* ()*
// CHECK-NEXT: store i8* ()* [[T3]], i8* ()** [[RET]]
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[CAPTURED]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T0]])
// CHECK-NEXT: store i32
// CHECK-NEXT: br label
// CHECK-NOT: objc_retain
// CHECK-NOT: objc_release
// CHECK: [[CAPTURED:%.*]] = getelementptr inbounds [[BLOCK]], [[BLOCK]]* [[B1]], i32 0, i32 5
// CHECK-NEXT: [[T1:%.*]] = load i8*, i8** [[SELF]], align
// CHECK-NEXT: [[T2:%.*]] = call i8* @llvm.objc.retain(i8* [[T1]])
// CHECK-NEXT: store i8* [[T2]], i8** [[CAPTURED]],
// CHECK-NEXT: [[T0:%.*]] = bitcast [[BLOCK]]* [[B1]] to i8* ()*
// CHECK-NEXT: [[T1:%.*]] = bitcast i8* ()* [[T0]] to i8*
// CHECK-NEXT: [[T2:%.*]] = call i8* @llvm.objc.retainBlock(i8* [[T1]])
// CHECK-NEXT: [[T3:%.*]] = bitcast i8* [[T2]] to i8* ()*
// CHECK-NEXT: store i8* ()* [[T3]], i8* ()** [[RET]]
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[CAPTURED]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T0]])
// CHECK-NEXT: store i32
// CHECK-NEXT: br label
void test18(id x) {
// CHECK-UNOPT-LABEL: define{{.*}} void @test18(
// CHECK-UNOPT: [[X:%.*]] = alloca i8*,
// CHECK-UNOPT-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-UNOPT-NEXT: store i8* null, i8** [[X]]
// CHECK-UNOPT-NEXT: call void @llvm.objc.storeStrong(i8** [[X]],
// CHECK-UNOPT: %[[BLOCK_DESCRIPTOR:.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[BLOCK]], i32 0, i32 4
// CHECK-UNOPT: store %[[STRUCT_BLOCK_DESCRIPTOR]]* bitcast ({ i64, i64, i8*, i8*, i8*, i64 }* @[[BLOCK_DESCRIPTOR_TMP44]] to %[[STRUCT_BLOCK_DESCRIPTOR]]*), %[[STRUCT_BLOCK_DESCRIPTOR]]** %[[BLOCK_DESCRIPTOR]], align 8
// CHECK-UNOPT: [[SLOT:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5
// CHECK-UNOPT-NEXT: [[T0:%.*]] = load i8*, i8** [[X]],
// CHECK-UNOPT-NEXT: [[T1:%.*]] = call i8* @llvm.objc.retain(i8* [[T0]])
// CHECK-UNOPT-NEXT: store i8* [[T1]], i8** [[SLOT]],
// CHECK-UNOPT-NEXT: bitcast
// CHECK-UNOPT-NEXT: call void @test18_helper(
// CHECK-UNOPT-NEXT: call void @llvm.objc.storeStrong(i8** [[SLOT]], i8* null) [[NUW:#[0-9]+]]
// CHECK-UNOPT-NEXT: call void @llvm.objc.storeStrong(i8** [[X]], i8* 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 <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8* }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8* }>* %{{.*}}, i32 0, i32 4
// CHECK: store %[[STRUCT_BLOCK_DESCRIPTOR]]* bitcast ({ i64, i64, i8*, i8*, i8*, i8* }* @[[BLOCK_DESCRIPTOR_TMP46]] to %[[STRUCT_BLOCK_DESCRIPTOR]]*), %[[STRUCT_BLOCK_DESCRIPTOR]]** %[[BLOCK_DESCRIPTOR]], align 8
// CHECK-LABEL: define internal void @__testUnsafeUnretainedLifetimeInCopyAndDestroyHelpers_block_invoke
// CHECK-UNOPT-LABEL: define internal void @__testUnsafeUnretainedLifetimeInCopyAndDestroyHelpers_block_invoke
// rdar://13588325
void test19_sink(void (^)(int));
void test19(void (^b)(void)) {
// CHECK-LABEL: define{{.*}} void @test19(
// Prologue.
// CHECK: [[B:%.*]] = alloca void ()*,
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-NEXT: [[T0:%.*]] = bitcast void ()* {{%.*}} to i8*
// CHECK-NEXT: [[T1:%.*]] = call i8* @llvm.objc.retain(i8* [[T0]])
// CHECK-NEXT: [[T2:%.*]] = bitcast i8* [[T1]] to void ()*
// CHECK-NEXT: store void ()* [[T2]], void ()** [[B]]
// Block setup. We skip most of this. Note the bare retain.
// CHECK: %[[BLOCK_DESCRIPTOR:.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[BLOCK]], i32 0, i32 4
// CHECK: store %[[STRUCT_BLOCK_DESCRIPTOR]]* bitcast ({ i64, i64, i8*, i8*, i8*, i64 }* @[[BLOCK_DESCRIPTOR_TMP48]] to %[[STRUCT_BLOCK_DESCRIPTOR]]*), %[[STRUCT_BLOCK_DESCRIPTOR]]** %[[BLOCK_DESCRIPTOR]], align 8
// CHECK: [[SLOT:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5
// CHECK-NEXT: [[T0:%.*]] = load void ()*, void ()** [[B]],
// CHECK-NEXT: [[T1:%.*]] = bitcast void ()* [[T0]] to i8*
// CHECK-NEXT: [[T2:%.*]] = call i8* @llvm.objc.retain(i8* [[T1]])
// CHECK-NEXT: [[T3:%.*]] = bitcast i8* [[T2]] to void ()*
// CHECK-NEXT: store void ()* [[T3]], void ()** [[SLOT]],
// Call.
// CHECK-NEXT: [[T0:%.*]] = bitcast [[BLOCK_T]]* [[BLOCK]] to void (i32)*
// CHECK-NEXT: call void @test19_sink(void (i32)* [[T0]])
test19_sink(^(int x) { b(); });
// Block teardown.
// CHECK-NEXT: [[T0:%.*]] = load void ()*, void ()** [[SLOT]]
// CHECK-NEXT: [[T1:%.*]] = bitcast void ()* [[T0]] to i8*
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T1]])
// Local cleanup.
// CHECK-NEXT: [[T0:%.*]] = load void ()*, void ()** [[B]]
// CHECK-NEXT: [[T1:%.*]] = bitcast void ()* [[T0]] to i8*
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T1]])
// CHECK-NEXT: ret void
}
// CHECK-LABEL: define{{.*}} void @test20(
// CHECK: [[XADDR:%.*]] = alloca i8*
// CHECK-NEXT: [[BLOCK:%.*]] = alloca <[[BLOCKTY:.*]]>
// CHECK-NEXT: [[RETAINEDX:%.*]] = call i8* @llvm.objc.retain(i8* %{{.*}})
// CHECK-NEXT: store i8* [[RETAINEDX]], i8** [[XADDR]]
// CHECK: [[BLOCKCAPTURED:%.*]] = getelementptr inbounds <[[BLOCKTY]]>, <[[BLOCKTY]]>* [[BLOCK]], i32 0, i32 5
// CHECK: [[CAPTURED:%.*]] = load i8*, i8** [[XADDR]]
// CHECK: store i8* [[CAPTURED]], i8** [[BLOCKCAPTURED]]
// CHECK: [[CAPTURE:%.*]] = load i8*, i8** [[BLOCKCAPTURED]]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.use(i8* [[CAPTURE]])
// CHECK-NEXT: [[X:%.*]] = load i8*, i8** [[XADDR]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[X]])
// CHECK-NEXT: ret void
// CHECK-UNOPT-LABEL: define{{.*}} void @test20(
// CHECK-UNOPT: [[XADDR:%.*]] = alloca i8*
// CHECK-UNOPT-NEXT: [[BLOCK:%.*]] = alloca <[[BLOCKTY:.*]]>
// CHECK-UNOPT: [[BLOCKCAPTURED:%.*]] = getelementptr inbounds <[[BLOCKTY]]>, <[[BLOCKTY]]>* [[BLOCK]], i32 0, i32 5
// CHECK-UNOPT: [[CAPTURED:%.*]] = load i8*, i8** [[XADDR]]
// CHECK-UNOPT: [[RETAINED:%.*]] = call i8* @llvm.objc.retain(i8* [[CAPTURED]])
// CHECK-UNOPT: store i8* [[RETAINED]], i8** [[BLOCKCAPTURED]]
// CHECK-UNOPT: call void @llvm.objc.storeStrong(i8** [[BLOCKCAPTURED]], i8* null)
void test20_callee(void (^)());
void test20(const id x) {
test20_callee(^{ (void)x; });
}
// CHECK-LABEL: define{{.*}} void @test21(
// CHECK: %[[V6:.*]] = call i8* @llvm.objc.retainBlock(
// CHECK: %[[V7:.*]] = bitcast i8* %[[V6]] to void ()*
// CHECK: call void (i32, ...) @test21_callee(i32 1, void ()* %[[V7]]),
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{{.*}} i8* @test22(
// CHECK-COMMON: %[[BLOCK_CAPTURED:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %{{.*}}*, i8* }>, <{ i8*, i32, i32, i8*, %{{.*}}*, i8* }>* %{{.*}}, i32 0, i32 5
// CHECK-COMMON: %[[V3:.*]] = call i8* @llvm.objc.retain(i8* %{{.*}})
// CHECK-COMMON: store i8* %[[V3]], i8** %[[BLOCK_CAPTURED]], align 8
// CHECK-COMMON: call void @test22_1()
// CHECK-UNOPT: call void @llvm.objc.storeStrong(i8** %[[BLOCK_CAPTURED]], i8* null)
// CHECK: %[[V15:.*]] = load i8*, i8** %[[BLOCK_CAPTURED]], align 8
// CHECK: call void @llvm.objc.release(i8* %[[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 i8* @llvm.objc.retainBlock(
// CHECK-COMMON: %[[V10:.*]] = bitcast i8* %[[V9]] to void ()*
// CHECK-COMMON: call void (i8*, i8*, i32, ...) bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, i32, ...)*)(i8* %{{.*}}, i8* %{{.*}}, i32 123, void ()* %[[V10]])
void test23(id x, Test23 *t) {
[t m:123, ^{ (void)x; }];
}
// CHECK: attributes [[NUW]] = { nounwind }
// CHECK-UNOPT: attributes [[NUW]] = { nounwind }
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