1// RUN: %clang_cc1 -fobjc-arc -emit-llvm -triple x86_64-apple-darwin -o - %s | FileCheck %s 2 3@interface NSMutableArray 4- (id)objectAtIndexedSubscript:(int)index; 5- (void)setObject:(id)object atIndexedSubscript:(int)index; 6@end 7 8id func(void) { 9 NSMutableArray *array; 10 array[3] = 0; 11 return array[3]; 12} 13 14// CHECK: [[call:%.*]] = call ptr @objc_msgSend 15// CHECK: [[SIX:%.*]] = notail call ptr @llvm.objc.retainAutoreleasedReturnValue(ptr [[call]]) [[NUW:#[0-9]+]] 16// CHECK: call void @llvm.objc.storeStrong(ptr {{%.*}}, ptr null) 17// CHECK: [[EIGHT:%.*]] = tail call ptr @llvm.objc.autoreleaseReturnValue(ptr [[SIX]]) [[NUW]] 18// CHECK: ret ptr [[EIGHT]] 19 20// CHECK: attributes [[NUW]] = { nounwind } 21