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llvm-project/clang/test/CodeGenObjC/arc-foreach.m
Mehdi Amini e0ac46e69d Revert "Remove rdar links; NFC" 
This reverts commit d618f1c3b12effd0c2bdb7d02108d3551f389d3d.
This commit wasn't reviewed ahead of time and significant concerns were
raised immediately after it landed. According to our developer policy
this warrants immediate revert of the commit.

https://llvm.org/docs/DeveloperPolicy.html#patch-reversion-policy

Differential Revision: https://reviews.llvm.org/D155509
2023-07-17 18:08:04 -07:00

217 lines
8.3 KiB
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// RUN: %clang_cc1 -no-enable-noundef-analysis -triple x86_64-apple-darwin -fblocks -fobjc-arc -fobjc-runtime-has-weak -emit-llvm %s -o - | FileCheck -check-prefix CHECK-LP64 %s
// RUN: %clang_cc1 -no-enable-noundef-analysis -triple x86_64-apple-darwin -O1 -fblocks -fobjc-arc -fobjc-runtime-has-weak -emit-llvm %s -o - | FileCheck -check-prefix CHECK-LP64-OPT %s
// rdar://9503326
// rdar://9606600
extern void use(id);
extern void use_block(void (^)(void));
struct NSFastEnumerationState;
@interface NSArray
- (unsigned long) countByEnumeratingWithState: (struct NSFastEnumerationState*) state
objects: (id*) buffer
count: (unsigned long) bufferSize;
@end;
void test0(NSArray *array) {
// 'x' should be initialized without a retain.
// We should actually do a non-constant capture, and that
// capture should require a retain.
for (id x in array) {
use_block(^{ use(x); });
}
}
// CHECK-LP64-LABEL: define{{.*}} void @test0(
// CHECK-LP64: [[ARRAY:%.*]] = alloca ptr,
// CHECK-LP64-NEXT: [[X:%.*]] = alloca ptr,
// CHECK-LP64-NEXT: [[STATE:%.*]] = alloca [[STATE_T:%.*]],
// CHECK-LP64-NEXT: [[BUFFER:%.*]] = alloca [16 x ptr], align 8
// CHECK-LP64-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-LP64-OPT-LABEL: define{{.*}} void @test0
// CHECK-LP64-OPT: [[STATE:%.*]] = alloca [[STATE_T:%.*]], align 8
// CHECK-LP64-OPT-NEXT: [[BUFFER:%.*]] = alloca [16 x ptr], align 8
// CHECK-LP64-OPT-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]], align 8
// Initialize 'array'.
// CHECK-LP64-NEXT: store ptr null, ptr [[ARRAY]]
// CHECK-LP64-NEXT: call void @llvm.objc.storeStrong(ptr [[ARRAY]], ptr {{%.*}}) [[NUW:#[0-9]+]]
// Initialize the fast enumaration state.
// CHECK-LP64-NEXT: call void @llvm.memset.p0.i64(ptr align 8 [[STATE]], i8 0, i64 64, i1 false)
// Evaluate the collection expression and retain.
// CHECK-LP64-NEXT: [[T0:%.*]] = load ptr, ptr [[ARRAY]], align 8
// CHECK-LP64-NEXT: [[SAVED_ARRAY:%.*]] = call ptr @llvm.objc.retain(ptr [[T0]])
// Call the enumeration method.
// CHECK-LP64-NEXT: [[T1:%.*]] = load ptr, ptr @OBJC_SELECTOR_REFERENCES_
// CHECK-LP64-NEXT: [[SIZE:%.*]] = call i64 @objc_msgSend(ptr [[SAVED_ARRAY]], ptr [[T1]], ptr [[STATE]], ptr [[BUFFER]], i64 16)
// Check for a nonzero result.
// CHECK-LP64-NEXT: [[T0:%.*]] = icmp eq i64 [[SIZE]], 0
// CHECK-LP64-NEXT: br i1 [[T0]]
// CHECK-LP64: [[T0:%.*]] = getelementptr inbounds [[STATE_T]], ptr [[STATE]], i32 0, i32 1
// CHECK-LP64-NEXT: [[T1:%.*]] = load ptr, ptr [[T0]]
// CHECK-LP64-NEXT: [[T2:%.*]] = getelementptr ptr, ptr [[T1]], i64
// CHECK-LP64-NEXT: [[T3:%.*]] = load ptr, ptr [[T2]]
// CHECK-LP64-NEXT: store ptr [[T3]], ptr [[X]]
// CHECK-LP64: [[CAPTURED:%.*]] = getelementptr inbounds [[BLOCK_T]], ptr [[BLOCK]], i32 0, i32 5
// CHECK-LP64-NEXT: [[T1:%.*]] = load ptr, ptr [[X]]
// CHECK-LP64-NEXT: [[T2:%.*]] = call ptr @llvm.objc.retain(ptr [[T1]])
// CHECK-LP64-NEXT: store ptr [[T2]], ptr [[CAPTURED]]
// CHECK-LP64-NEXT: call void @use_block(ptr [[BLOCK]])
// CHECK-LP64-NEXT: call void @llvm.objc.storeStrong(ptr [[CAPTURED]], ptr null)
// CHECK-LP64-NOT: call void (...) @llvm.objc.clang.arc.use(
// CHECK-LP64-OPT: [[D0:%.*]] = getelementptr inbounds [[BLOCK_T]], ptr [[BLOCK]], i64 0, i32 5
// CHECK-LP64-OPT: [[CAPTURE:%.*]] = load ptr, ptr [[D0]]
// CHECK-LP64-OPT: call void (...) @llvm.objc.clang.arc.use(ptr [[CAPTURE]])
// CHECK-LP64: [[T1:%.*]] = load ptr, ptr @OBJC_SELECTOR_REFERENCES_
// CHECK-LP64-NEXT: [[SIZE:%.*]] = call i64 @objc_msgSend(ptr [[SAVED_ARRAY]], ptr [[T1]], ptr [[STATE]], ptr [[BUFFER]], i64 16)
// Release the array.
// CHECK-LP64: call void @llvm.objc.release(ptr [[SAVED_ARRAY]])
// Destroy 'array'.
// CHECK-LP64: call void @llvm.objc.storeStrong(ptr [[ARRAY]], ptr null)
// CHECK-LP64-NEXT: ret void
// CHECK-LP64-LABEL: define internal void @__test0_block_invoke
// CHECK-LP64-NOT: ret
// CHECK-LP64: [[T0:%.*]] = getelementptr inbounds [[BLOCK_T]], ptr {{%.*}}, i32 0, i32 5
// CHECK-LP64-NEXT: [[T2:%.*]] = load ptr, ptr [[T0]], align 8
// CHECK-LP64-NEXT: call void @use(ptr [[T2]])
void test1(NSArray *array) {
for (__weak id x in array) {
use_block(^{ use(x); });
}
}
// CHECK-LP64-LABEL: define{{.*}} void @test1(
// CHECK-LP64: alloca ptr,
// CHECK-LP64-NEXT: [[X:%.*]] = alloca ptr,
// CHECK-LP64-NEXT: [[STATE:%.*]] = alloca [[STATE_T:%.*]],
// CHECK-LP64-NEXT: alloca [16 x ptr], align 8
// CHECK-LP64-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-LP64: [[T0:%.*]] = getelementptr inbounds [[STATE_T]], ptr [[STATE]], i32 0, i32 1
// CHECK-LP64-NEXT: [[T1:%.*]] = load ptr, ptr [[T0]]
// CHECK-LP64-NEXT: [[T2:%.*]] = getelementptr ptr, ptr [[T1]], i64
// CHECK-LP64-NEXT: [[T3:%.*]] = load ptr, ptr [[T2]]
// CHECK-LP64-NEXT: call ptr @llvm.objc.initWeak(ptr [[X]], ptr [[T3]])
// CHECK-LP64: [[T0:%.*]] = getelementptr inbounds [[BLOCK_T]], ptr [[BLOCK]], i32 0, i32 5
// CHECK-LP64: call void @llvm.objc.copyWeak(ptr [[T0]], ptr [[X]])
// CHECK-LP64: call void @use_block
// CHECK-LP64-NEXT: call void @llvm.objc.destroyWeak(ptr [[T0]])
// CHECK-LP64-NEXT: call void @llvm.objc.destroyWeak(ptr [[X]])
// rdar://problem/9817306
@interface Test2
- (NSArray *) array;
@end
void test2(Test2 *a) {
for (id x in a.array) {
use(x);
}
}
// CHECK-LP64-LABEL: define{{.*}} void @test2(
// CHECK-LP64: [[T0:%.*]] = call ptr @objc_msgSend(
// CHECK-LP64-NEXT: [[T2:%.*]] = notail call ptr @llvm.objc.retainAutoreleasedReturnValue(ptr [[T0]])
// Make sure it's not immediately released before starting the iteration.
// CHECK-LP64-NEXT: load ptr, ptr @OBJC_SELECTOR_REFERENCES_
// CHECK-LP64-NEXT: @objc_msgSend
// CHECK-LP64: @objc_enumerationMutation
// CHECK-LP64: load ptr, ptr @OBJC_SELECTOR_REFERENCES_
// CHECK-LP64-NEXT: @objc_msgSend
// CHECK-LP64: call void @llvm.objc.release(ptr [[T2]])
// Check that the 'continue' label is positioned appropriately
// relative to the collection clenaup.
void test3(NSArray *array) {
for (id x in array) {
if (!x) continue;
use(x);
}
// CHECK-LP64-LABEL: define{{.*}} void @test3(
// CHECK-LP64: [[ARRAY:%.*]] = alloca ptr, align 8
// CHECK-LP64-NEXT: [[X:%.*]] = alloca ptr, align 8
// CHECK-LP64: [[T0:%.*]] = load ptr, ptr [[X]], align 8
// CHECK-LP64-NEXT: [[T1:%.*]] = icmp ne ptr [[T0]], null
// CHECK-LP64-NEXT: br i1 [[T1]],
// CHECK-LP64: br label [[L:%[^ ]+]]
// CHECK-LP64: [[T0:%.*]] = load ptr, ptr [[X]], align 8
// CHECK-LP64-NEXT: call void @use(ptr [[T0]])
// CHECK-LP64-NEXT: br label [[L]]
}
@interface NSObject @end
@interface I1 : NSObject
- (NSArray *) foo1:(void (^)(void))block;
- (void) foo2;
@end
NSArray *array4;
@implementation I1 : NSObject
- (NSArray *) foo1:(void (^)(void))block {
block();
return array4;
}
- (void) foo2 {
for (id x in [self foo1:^{ use(self); }]) {
use(x);
break;
}
}
@end
// CHECK-LP64-LABEL: define internal void @"\01-[I1 foo2]"(
// CHECK-LP64: [[SELF_ADDR:%.*]] = alloca ptr,
// CHECK-LP64: [[BLOCK:%.*]] = alloca <{ ptr, i32, i32, ptr, ptr, ptr }>,
// CHECK-LP64: store ptr %self, ptr [[SELF_ADDR]]
// CHECK-LP64: [[BC:%.*]] = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr [[BLOCK]], i32 0, i32 5
// CHECK-LP64: [[T1:%.*]] = load ptr, ptr [[SELF_ADDR]]
// CHECK-LP64: call ptr @llvm.objc.retain(ptr [[T1]])
// CHECK-LP64-OPT-LABEL: define internal void @"\01-[I1 foo2]"(
// CHECK-LP64-OPT: ptr %self
// CHECK-LP64-OPT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-LP64-OPT: [[T0:%.*]] = getelementptr inbounds [[BLOCK_T]], ptr [[BLOCK]], i64 0, i32 5
// CHECK-LP64: call void @llvm.objc.storeStrong(ptr [[BC]], ptr null)
// CHECK-LP64-NOT: call void (...) @llvm.objc.clang.arc.use(ptr [[BC]])
// CHECK-LP64: switch i32 {{%.*}}, label %[[UNREACHABLE:.*]] [
// CHECK-LP64-NEXT: i32 0, label %[[CLEANUP_CONT:.*]]
// CHECK-LP64-NEXT: i32 2, label %[[FORCOLL_END:.*]]
// CHECK-LP64-NEXT: ]
// CHECK-LP64-OPT: [[T5:%.*]] = load ptr, ptr [[T0]]
// CHECK-LP64-OPT: call void (...) @llvm.objc.clang.arc.use(ptr [[T5]])
// CHECK-LP64: {{^|:}}[[CLEANUP_CONT]]
// CHECK-LP64-NEXT: br label %[[FORCOLL_END]]
// CHECK-LP64: {{^|:}}[[FORCOLL_END]]
// CHECK-LP64-NEXT: ret void
// CHECK-LP64: {{^|:}}[[UNREACHABLE]]
// CHECK-LP64-NEXT: unreachable
// CHECK-LP64: attributes [[NUW]] = { nounwind }
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