зеркало из https://github.com/microsoft/clang-1.git
174 строки
7.5 KiB
Objective-C
174 строки
7.5 KiB
Objective-C
// RUN: %clang_cc1 -fblocks -fobjc-arc -fobjc-runtime-has-weak -triple x86_64-apple-darwin -O0 -emit-llvm %s -o %t-64.s
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// RUN: FileCheck -check-prefix LP64 --input-file=%t-64.s %s
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// rdar://9503326
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// rdar://9606600
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extern void use(id);
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extern void use_block(void (^)(void));
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struct NSFastEnumerationState;
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@interface NSArray
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- (unsigned long) countByEnumeratingWithState: (struct NSFastEnumerationState*) state
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objects: (id*) buffer
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count: (unsigned long) bufferSize;
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@end;
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void test0(NSArray *array) {
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// 'x' should be initialized without a retain.
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// We should actually do a non-constant capture, and that
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// capture should require a retain.
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for (id x in array) {
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use_block(^{ use(x); });
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}
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}
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// CHECK-LP64: define void @test0(
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// CHECK-LP64: [[ARRAY:%.*]] = alloca [[ARRAY_T:%.*]]*,
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// CHECK-LP64-NEXT: [[X:%.*]] = alloca i8*,
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// CHECK-LP64-NEXT: [[STATE:%.*]] = alloca [[STATE_T:%.*]],
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// CHECK-LP64-NEXT: [[BUFFER:%.*]] = alloca [16 x i8*], align 8
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// CHECK-LP64-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
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// Initialize 'array'.
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// CHECK-LP64-NEXT: [[T0:%.*]] = bitcast [[ARRAY_T:%.*]]* {{%.*}} to i8*
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// CHECK-LP64-NEXT: [[T1:%.*]] = call i8* @objc_retain(i8* [[T0]])
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// CHECK-LP64-NEXT: [[T2:%.*]] = bitcast i8* [[T1]] to [[ARRAY_T]]*
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// CHECK-LP64-NEXT: store [[ARRAY_T]]* [[T2]], [[ARRAY_T]]** [[ARRAY]], align 8
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// Initialize the fast enumaration state.
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// CHECK-LP64-NEXT: [[T0:%.*]] = bitcast [[STATE_T]]* [[STATE]] to i8*
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// CHECK-LP64-NEXT: call void @llvm.memset.p0i8.i64(i8* [[T0]], i8 0, i64 64, i32 8, i1 false)
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// Evaluate the collection expression and retain.
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// CHECK-LP64-NEXT: [[T0:%.*]] = load [[ARRAY_T]]** [[ARRAY]], align 8
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// CHECK-LP64-NEXT: [[T1:%.*]] = bitcast [[ARRAY_T]]* [[T0]] to i8*
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// CHECK-LP64-NEXT: [[T2:%.*]] = call i8* @objc_retain(i8* [[T1]])
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// CHECK-LP64-NEXT: [[SAVED_ARRAY:%.*]] = bitcast i8* [[T2]] to [[ARRAY_T]]*
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// Call the enumeration method.
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// CHECK-LP64-NEXT: [[T0:%.*]] = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_
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// CHECK-LP64-NEXT: [[T1:%.*]] = bitcast [[ARRAY_T]]* [[SAVED_ARRAY]] to i8*
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// 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)
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// Check for a nonzero result.
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// CHECK-LP64-NEXT: [[T0:%.*]] = icmp eq i64 [[SIZE]], 0
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// CHECK-LP64-NEXT: br i1 [[T0]]
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// CHECK-LP64: [[T0:%.*]] = getelementptr inbounds [[STATE_T]]* [[STATE]], i32 0, i32 1
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// CHECK-LP64-NEXT: [[T1:%.*]] = load i8*** [[T0]]
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// CHECK-LP64-NEXT: [[T2:%.*]] = getelementptr i8** [[T1]], i64
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// CHECK-LP64-NEXT: [[T3:%.*]] = load i8** [[T2]]
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// CHECK-LP64-NEXT: store i8* [[T3]], i8** [[X]]
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// CHECK-LP64: [[D0:%.*]] = getelementptr inbounds [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5
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// CHECK-LP64: [[T0:%.*]] = getelementptr inbounds [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5
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// CHECK-LP64-NEXT: [[T1:%.*]] = load i8** [[X]]
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// CHECK-LP64-NEXT: [[T2:%.*]] = call i8* @objc_retain(i8* [[T1]])
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// CHECK-LP64-NEXT: store i8* [[T2]], i8** [[T0]]
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// CHECK-LP64-NEXT: [[T1:%.*]] = bitcast [[BLOCK_T]]* [[BLOCK]]
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// CHECK-LP64: call void @use_block(
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// CHECK-LP64-NEXT: [[T1:%.*]] = load i8** [[D0]]
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// CHECK-LP64-NEXT: call void @objc_release(i8* [[T1]])
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// CHECK-LP64: [[T0:%.*]] = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_
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// CHECK-LP64-NEXT: [[T1:%.*]] = bitcast [[ARRAY_T]]* [[SAVED_ARRAY]] to i8*
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// 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)
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// Release the array.
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// CHECK-LP64: [[T0:%.*]] = bitcast [[ARRAY_T]]* [[SAVED_ARRAY]] to i8*
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// CHECK-LP64-NEXT: call void @objc_release(i8* [[T0]])
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// Destroy 'array'.
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// CHECK-LP64: [[T0:%.*]] = load [[ARRAY_T]]** [[ARRAY]]
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// CHECK-LP64-NEXT: [[T1:%.*]] = bitcast [[ARRAY_T]]* [[T0]] to i8*
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// CHECK-LP64-NEXT: call void @objc_release(i8* [[T1]])
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// CHECK-LP64-NEXT: ret void
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// CHECK-LP64: define internal void @__test0_block_invoke
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// CHECK-LP64: [[BLOCK:%.*]] = bitcast i8* {{%.*}} to [[BLOCK_T]]*
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// CHECK-LP64-NEXT: [[T0:%.*]] = getelementptr inbounds [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5
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// CHECK-LP64-NEXT: [[T2:%.*]] = load i8** [[T0]], align 8
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// CHECK-LP64-NEXT: call void @use(i8* [[T2]])
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void test1(NSArray *array) {
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for (__weak id x in array) {
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use_block(^{ use(x); });
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}
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}
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// CHECK-LP64: define void @test1(
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// CHECK-LP64: alloca [[ARRAY_T:%.*]]*,
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// CHECK-LP64-NEXT: [[X:%.*]] = alloca i8*,
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// CHECK-LP64-NEXT: [[STATE:%.*]] = alloca [[STATE_T:%.*]],
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// CHECK-LP64-NEXT: alloca [16 x i8*], align 8
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// CHECK-LP64-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
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// CHECK-LP64: [[T0:%.*]] = getelementptr inbounds [[STATE_T]]* [[STATE]], i32 0, i32 1
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// CHECK-LP64-NEXT: [[T1:%.*]] = load i8*** [[T0]]
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// CHECK-LP64-NEXT: [[T2:%.*]] = getelementptr i8** [[T1]], i64
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// CHECK-LP64-NEXT: [[T3:%.*]] = load i8** [[T2]]
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// CHECK-LP64-NEXT: call i8* @objc_initWeak(i8** [[X]], i8* [[T3]])
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// CHECK-LP64: [[D0:%.*]] = getelementptr inbounds [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5
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// CHECK-LP64: [[T0:%.*]] = getelementptr inbounds [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5
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// CHECK-LP64-NEXT: [[T1:%.*]] = call i8* @objc_loadWeak(i8** [[X]])
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// CHECK-LP64-NEXT: call i8* @objc_initWeak(i8** [[T0]], i8* [[T1]])
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// CHECK-LP64-NEXT: [[T1:%.*]] = bitcast [[BLOCK_T]]* [[BLOCK]] to
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// CHECK-LP64: call void @use_block
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// CHECK-LP64-NEXT: call void @objc_destroyWeak(i8** [[D0]])
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// CHECK-LP64-NEXT: call void @objc_destroyWeak(i8** [[X]])
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// rdar://problem/9817306
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@interface Test2
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- (NSArray *) array;
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@end
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void test2(Test2 *a) {
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for (id x in a.array) {
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use(x);
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}
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}
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// CHECK-LP64: define void @test2(
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// CHECK-LP64: [[T0:%.*]] = call [[ARRAY_T]]* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to [[ARRAY_T]]* (i8*, i8*)*)(
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// CHECK-LP64-NEXT: [[T1:%.*]] = bitcast [[ARRAY_T]]* [[T0]] to i8*
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// CHECK-LP64-NEXT: [[T2:%.*]] = call i8* @objc_retainAutoreleasedReturnValue(i8* [[T1]])
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// CHECK-LP64-NEXT: [[COLL:%.*]] = bitcast i8* [[T2]] to [[ARRAY_T]]*
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// Make sure it's not immediately released before starting the iteration.
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// CHECK-LP64-NEXT: load i8** @"\01L_OBJC_SELECTOR_REFERENCES_
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// CHECK-LP64-NEXT: [[T0:%.*]] = bitcast [[ARRAY_T]]* [[COLL]] to i8*
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// CHECK-LP64-NEXT: @objc_msgSend
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// This bitcast is for the mutation check.
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// CHECK-LP64: [[T0:%.*]] = bitcast [[ARRAY_T]]* [[COLL]] to i8*
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// CHECK-LP64-NEXT: @objc_enumerationMutation
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// This bitcast is for the 'next' message send.
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// CHECK-LP64: [[T0:%.*]] = bitcast [[ARRAY_T]]* [[COLL]] to i8*
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// CHECK-LP64-NEXT: @objc_msgSend
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// This bitcast is for the final release.
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// CHECK-LP64: [[T0:%.*]] = bitcast [[ARRAY_T]]* [[COLL]] to i8*
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// CHECK-LP64-NEXT: call void @objc_release(i8* [[T0]])
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// Check that the 'continue' label is positioned appropriately
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// relative to the collection clenaup.
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void test3(NSArray *array) {
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for (id x in array) {
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if (!x) continue;
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use(x);
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}
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// CHECK-LP64: define void @test3(
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// CHECK-LP64: [[ARRAY:%.*]] = alloca [[ARRAY_T]]*, align 8
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// CHECK-LP64-NEXT: [[X:%.*]] = alloca i8*, align 8
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// CHECK-LP64: [[T0:%.*]] = load i8** [[X]], align 8
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// CHECK-LP64-NEXT: [[T1:%.*]] = icmp ne i8* [[T0]], null
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// CHECK-LP64-NEXT: br i1 [[T1]],
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// CHECK-LP64: br label [[L:%[^ ]+]]
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// CHECK-LP64: [[T0:%.*]] = load i8** [[X]], align 8
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// CHECK-LP64-NEXT: call void @use(i8* [[T0]])
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// CHECK-LP64-NEXT: br label [[L]]
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}
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