File: arc-weak.m

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-6~deb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,418,812 kB
  • sloc: cpp: 5,290,827; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,900; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,892; xml: 953; cs: 573; fortran: 539
file content (20 lines) | stat: -rw-r--r-- 952 bytes parent folder | download | duplicates (6) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-runtime-has-weak -o - %s | FileCheck %s

__attribute((objc_root_class)) @interface A @end
@interface B : A @end

// rdar://problem/23559789
//   Ensure that type differences don't cause an assert here.
void test0(__weak B **src) {
  __weak A *dest = *src;
}
// CHECK-LABEL: define{{.*}} void @test0
// CHECK:       [[SRC:%.*]] = alloca [[B:%.*]]**, align 8
// CHECK:       [[DEST:%.*]] = alloca [[A:%.*]]*, align 8
// CHECK:       [[T0:%.*]] = load [[B]]**, [[B]]*** [[SRC]], align 8
// CHECK-NEXT:  [[T1:%.*]] = bitcast [[B]]** [[T0]] to [[A]]**
// CHECK-NEXT:  [[T2:%.*]] = bitcast [[A]]** [[DEST]] to i8**
// CHECK-NEXT:  [[T3:%.*]] = bitcast [[A]]** [[T1]] to i8**
// CHECK-NEXT:  call void @llvm.objc.copyWeak(i8** [[T2]], i8** [[T3]])
// CHECK-NEXT:  [[T0:%.*]] = bitcast [[A]]** [[DEST]] to i8**
// CHECK:       call void @llvm.objc.destroyWeak(i8** [[T0]])