1// RUN: %clang_cc1 -fblocks -fobjc-arc -fobjc-runtime-has-weak -triple x86_64-apple-darwin -emit-llvm %s -o %t-64.s 2// RUN: FileCheck -check-prefix CHECK-LP64 --input-file=%t-64.s %s 3// rdar://9503326 4// rdar://9606600 5 6extern void use(id); 7extern void use_block(void (^)(void)); 8 9struct NSFastEnumerationState; 10@interface NSArray 11- (unsigned long) countByEnumeratingWithState: (struct NSFastEnumerationState*) state 12 objects: (id*) buffer 13 count: (unsigned long) bufferSize; 14@end; 15 16void test0(NSArray *array) { 17 // 'x' should be initialized without a retain. 18 // We should actually do a non-constant capture, and that 19 // capture should require a retain. 20 for (id x in array) { 21 use_block(^{ use(x); }); 22 } 23} 24 25// CHECK-LP64-LABEL: define void @test0( 26// CHECK-LP64: [[ARRAY:%.*]] = alloca [[ARRAY_T:%.*]]*, 27// CHECK-LP64-NEXT: [[X:%.*]] = alloca i8*, 28// CHECK-LP64-NEXT: [[STATE:%.*]] = alloca [[STATE_T:%.*]], 29// CHECK-LP64-NEXT: [[BUFFER:%.*]] = alloca [16 x i8*], align 8 30// CHECK-LP64-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]], 31 32// Initialize 'array'. 33// CHECK-LP64-NEXT: store [[ARRAY_T]]* null, [[ARRAY_T]]** [[ARRAY]] 34// CHECK-LP64-NEXT: [[ZERO:%.*]] = bitcast [[ARRAY_T]]** [[ARRAY]] to i8** 35// CHECK-LP64-NEXT: [[ONE:%.*]] = bitcast [[ARRAY_T]]* {{%.*}} to i8* 36// CHECK-LP64-NEXT: call void @objc_storeStrong(i8** [[ZERO]], i8* [[ONE]]) [[NUW:#[0-9]+]] 37 38// Initialize the fast enumaration state. 39// CHECK-LP64-NEXT: [[T0:%.*]] = bitcast [[STATE_T]]* [[STATE]] to i8* 40// CHECK-LP64-NEXT: call void @llvm.memset.p0i8.i64(i8* [[T0]], i8 0, i64 64, i32 8, i1 false) 41 42// Evaluate the collection expression and retain. 43// CHECK-LP64-NEXT: [[T0:%.*]] = load [[ARRAY_T]]*, [[ARRAY_T]]** [[ARRAY]], align 8 44// CHECK-LP64-NEXT: [[T1:%.*]] = bitcast [[ARRAY_T]]* [[T0]] to i8* 45// CHECK-LP64-NEXT: [[T2:%.*]] = call i8* @objc_retain(i8* [[T1]]) 46// CHECK-LP64-NEXT: [[SAVED_ARRAY:%.*]] = bitcast i8* [[T2]] to [[ARRAY_T]]* 47 48// Call the enumeration method. 49// CHECK-LP64-NEXT: [[T0:%.*]] = load i8*, i8** @OBJC_SELECTOR_REFERENCES_ 50// CHECK-LP64-NEXT: [[T1:%.*]] = bitcast [[ARRAY_T]]* [[SAVED_ARRAY]] to i8* 51// CHECK-LP64-NEXT: [[SIZE:%.*]] = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, [[STATE_T]]*, [16 x i8*]*, i64)*)(i8* [[T1]], i8* [[T0]], [[STATE_T]]* [[STATE]], [16 x i8*]* [[BUFFER]], i64 16) 52 53// Check for a nonzero result. 54// CHECK-LP64-NEXT: [[T0:%.*]] = icmp eq i64 [[SIZE]], 0 55// CHECK-LP64-NEXT: br i1 [[T0]] 56 57// CHECK-LP64: [[T0:%.*]] = getelementptr inbounds [[STATE_T]], [[STATE_T]]* [[STATE]], i32 0, i32 1 58// CHECK-LP64-NEXT: [[T1:%.*]] = load i8**, i8*** [[T0]] 59// CHECK-LP64-NEXT: [[T2:%.*]] = getelementptr i8*, i8** [[T1]], i64 60// CHECK-LP64-NEXT: [[T3:%.*]] = load i8*, i8** [[T2]] 61// CHECK-LP64-NEXT: store i8* [[T3]], i8** [[X]] 62 63// CHECK-LP64: [[D0:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5 64// CHECK-LP64: [[T0:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5 65// CHECK-LP64-NEXT: [[T1:%.*]] = load i8*, i8** [[X]] 66// CHECK-LP64-NEXT: [[T2:%.*]] = call i8* @objc_retain(i8* [[T1]]) 67// CHECK-LP64-NEXT: store i8* [[T2]], i8** [[T0]] 68// CHECK-LP64-NEXT: [[T1:%.*]] = bitcast [[BLOCK_T]]* [[BLOCK]] 69// CHECK-LP64: call void @use_block( 70// CHECK-LP64-NEXT: call void @objc_storeStrong(i8** [[D0]], i8* null) 71 72// CHECK-LP64: [[T0:%.*]] = load i8*, i8** @OBJC_SELECTOR_REFERENCES_ 73// CHECK-LP64-NEXT: [[T1:%.*]] = bitcast [[ARRAY_T]]* [[SAVED_ARRAY]] to i8* 74// CHECK-LP64-NEXT: [[SIZE:%.*]] = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, [[STATE_T]]*, [16 x i8*]*, i64)*)(i8* [[T1]], i8* [[T0]], [[STATE_T]]* [[STATE]], [16 x i8*]* [[BUFFER]], i64 16) 75 76// Release the array. 77// CHECK-LP64: [[T0:%.*]] = bitcast [[ARRAY_T]]* [[SAVED_ARRAY]] to i8* 78// CHECK-LP64-NEXT: call void @objc_release(i8* [[T0]]) 79 80// Destroy 'array'. 81// CHECK-LP64: [[T0:%.*]] = bitcast [[ARRAY_T]]** [[ARRAY]] to i8** 82// CHECK-LP64-NEXT: call void @objc_storeStrong(i8** [[T0]], i8* null) 83// CHECK-LP64-NEXT: ret void 84 85// CHECK-LP64-LABEL: define internal void @__test0_block_invoke 86// CHECK-LP64: [[BLOCK:%.*]] = bitcast i8* {{%.*}} to [[BLOCK_T]]* 87// CHECK-LP64-NOT: ret 88// CHECK-LP64: [[T0:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5 89// CHECK-LP64-NEXT: [[T2:%.*]] = load i8*, i8** [[T0]], align 8 90// CHECK-LP64-NEXT: call void @use(i8* [[T2]]) 91 92void test1(NSArray *array) { 93 for (__weak id x in array) { 94 use_block(^{ use(x); }); 95 } 96} 97 98// CHECK-LP64-LABEL: define void @test1( 99// CHECK-LP64: alloca [[ARRAY_T:%.*]]*, 100// CHECK-LP64-NEXT: [[X:%.*]] = alloca i8*, 101// CHECK-LP64-NEXT: [[STATE:%.*]] = alloca [[STATE_T:%.*]], 102// CHECK-LP64-NEXT: alloca [16 x i8*], align 8 103// CHECK-LP64-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]], 104 105// CHECK-LP64: [[T0:%.*]] = getelementptr inbounds [[STATE_T]], [[STATE_T]]* [[STATE]], i32 0, i32 1 106// CHECK-LP64-NEXT: [[T1:%.*]] = load i8**, i8*** [[T0]] 107// CHECK-LP64-NEXT: [[T2:%.*]] = getelementptr i8*, i8** [[T1]], i64 108// CHECK-LP64-NEXT: [[T3:%.*]] = load i8*, i8** [[T2]] 109// CHECK-LP64-NEXT: call i8* @objc_initWeak(i8** [[X]], i8* [[T3]]) 110 111// CHECK-LP64: [[D0:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5 112// CHECK-LP64: [[T0:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5 113// CHECK-LP64-NEXT: call void @objc_copyWeak(i8** [[T0]], i8** [[X]]) 114// CHECK-LP64-NEXT: [[T1:%.*]] = bitcast [[BLOCK_T]]* [[BLOCK]] to 115// CHECK-LP64: call void @use_block 116// CHECK-LP64-NEXT: call void @objc_destroyWeak(i8** [[D0]]) 117// CHECK-LP64-NEXT: call void @objc_destroyWeak(i8** [[X]]) 118 119// rdar://problem/9817306 120@interface Test2 121- (NSArray *) array; 122@end 123void test2(Test2 *a) { 124 for (id x in a.array) { 125 use(x); 126 } 127} 128 129// CHECK-LP64-LABEL: define void @test2( 130// CHECK-LP64: [[T0:%.*]] = call [[ARRAY_T]]* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to [[ARRAY_T]]* (i8*, i8*)*)( 131// CHECK-LP64-NEXT: [[T1:%.*]] = bitcast [[ARRAY_T]]* [[T0]] to i8* 132// CHECK-LP64-NEXT: [[T2:%.*]] = call i8* @objc_retainAutoreleasedReturnValue(i8* [[T1]]) 133// CHECK-LP64-NEXT: [[COLL:%.*]] = bitcast i8* [[T2]] to [[ARRAY_T]]* 134 135// Make sure it's not immediately released before starting the iteration. 136// CHECK-LP64-NEXT: load i8*, i8** @OBJC_SELECTOR_REFERENCES_ 137// CHECK-LP64-NEXT: [[T0:%.*]] = bitcast [[ARRAY_T]]* [[COLL]] to i8* 138// CHECK-LP64-NEXT: @objc_msgSend 139 140// This bitcast is for the mutation check. 141// CHECK-LP64: [[T0:%.*]] = bitcast [[ARRAY_T]]* [[COLL]] to i8* 142// CHECK-LP64-NEXT: @objc_enumerationMutation 143 144// This bitcast is for the 'next' message send. 145// CHECK-LP64: [[T0:%.*]] = bitcast [[ARRAY_T]]* [[COLL]] to i8* 146// CHECK-LP64-NEXT: @objc_msgSend 147 148// This bitcast is for the final release. 149// CHECK-LP64: [[T0:%.*]] = bitcast [[ARRAY_T]]* [[COLL]] to i8* 150// CHECK-LP64-NEXT: call void @objc_release(i8* [[T0]]) 151 152 153// Check that the 'continue' label is positioned appropriately 154// relative to the collection clenaup. 155void test3(NSArray *array) { 156 for (id x in array) { 157 if (!x) continue; 158 use(x); 159 } 160 161 // CHECK-LP64-LABEL: define void @test3( 162 // CHECK-LP64: [[ARRAY:%.*]] = alloca [[ARRAY_T]]*, align 8 163 // CHECK-LP64-NEXT: [[X:%.*]] = alloca i8*, align 8 164 // CHECK-LP64: [[T0:%.*]] = load i8*, i8** [[X]], align 8 165 // CHECK-LP64-NEXT: [[T1:%.*]] = icmp ne i8* [[T0]], null 166 // CHECK-LP64-NEXT: br i1 [[T1]], 167 // CHECK-LP64: br label [[L:%[^ ]+]] 168 // CHECK-LP64: [[T0:%.*]] = load i8*, i8** [[X]], align 8 169 // CHECK-LP64-NEXT: call void @use(i8* [[T0]]) 170 // CHECK-LP64-NEXT: br label [[L]] 171} 172 173@interface NSObject @end 174 175@interface I1 : NSObject 176- (NSArray *) foo1:(void (^)(void))block; 177- (void) foo2; 178@end 179 180NSArray *array4; 181 182@implementation I1 : NSObject 183- (NSArray *) foo1:(void (^)(void))block { 184 block(); 185 return array4; 186} 187 188- (void) foo2 { 189 for (id x in [self foo1:^{ use(self); }]) { 190 use(x); 191 break; 192 } 193} 194@end 195 196// CHECK-LP64-LABEL: define internal void @"\01-[I1 foo2]"( 197// CHECK-LP64: [[SELF_ADDR:%.*]] = alloca [[TY:%.*]]*, 198// CHECK-LP64: [[BLOCK:%.*]] = alloca <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, [[TY]]* }>, 199// CHECK-LP64: store [[TY]]* %self, [[TY]]** [[SELF_ADDR]] 200// CHECK-LP64: [[T0:%.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, [[TY]]* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, [[TY]]* }>* [[BLOCK]], i32 0, i32 5 201// CHECK-LP64: [[BC:%.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, [[TY]]* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, [[TY]]* }>* [[BLOCK]], i32 0, i32 5 202// CHECK-LP64: [[T1:%.*]] = load [[TY]]*, [[TY]]** [[SELF_ADDR]] 203// CHECK-LP64: [[T2:%.*]] = bitcast [[TY]]* [[T1]] to i8* 204// CHECK-LP64: [[T3:%.*]] = call i8* @objc_retain(i8* [[T2]]) 205// CHECK-LP64: [[T4:%.*]] = bitcast i8* [[T3]] to [[TY]]* 206// CHECK-LP64: store [[TY]]* [[T4]], [[TY]]** [[BC]] 207 208// CHECK-LP64: [[T5:%.*]] = bitcast [[TY]]** [[T0]] to i8** 209// CHECK-LP64: call void @objc_storeStrong(i8** [[T5]], i8* null) 210// CHECK-LP64: switch i32 {{%.*}}, label %[[UNREACHABLE:.*]] [ 211// CHECK-LP64-NEXT: i32 0, label %[[CLEANUP_CONT:.*]] 212// CHECK-LP64-NEXT: i32 2, label %[[FORCOLL_END:.*]] 213// CHECK-LP64-NEXT: ] 214 215// CHECK-LP64: {{^|:}}[[CLEANUP_CONT]] 216// CHECK-LP64-NEXT: br label %[[FORCOLL_END]] 217 218// CHECK-LP64: {{^|:}}[[FORCOLL_END]] 219// CHECK-LP64-NEXT: ret void 220 221// CHECK-LP64: {{^|:}}[[UNREACHABLE]] 222// CHECK-LP64-NEXT: unreachable 223 224// CHECK-LP64: attributes [[NUW]] = { nounwind } 225