Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 1 | // RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-runtime-has-weak -fblocks -fobjc-arc -O2 -disable-llvm-optzns -o - %s | FileCheck %s |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2 | |
Douglas Gregor | d7b2316 | 2011-06-22 16:12:01 +0000 | [diff] [blame] | 3 | @interface A |
| 4 | @end |
| 5 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 6 | id getObject(); |
| 7 | void callee(); |
| 8 | |
| 9 | // Lifetime extension for binding a reference to an rvalue |
Stephen Lin | 93ab6bf | 2013-08-15 06:47:53 +0000 | [diff] [blame] | 10 | // CHECK-LABEL: define void @_Z5test0v() |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 11 | void test0() { |
| 12 | // CHECK: call i8* @_Z9getObjectv |
Benjamin Kramer | 3ba0252 | 2012-09-18 20:59:03 +0000 | [diff] [blame] | 13 | // CHECK-NEXT: call i8* @objc_retainAutoreleasedReturnValue |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 14 | const __strong id &ref1 = getObject(); |
| 15 | // CHECK: call void @_Z6calleev |
| 16 | callee(); |
| 17 | // CHECK: call i8* @_Z9getObjectv |
| 18 | // CHECK-NEXT: call i8* @objc_retainAutoreleasedReturnValue |
| 19 | // CHECK-NEXT: call i8* @objc_autorelease |
| 20 | const __autoreleasing id &ref2 = getObject(); |
| 21 | // CHECK: call void @_Z6calleev |
| 22 | callee(); |
| 23 | // CHECK: call void @objc_release |
| 24 | // CHECK-NEXT: ret |
| 25 | } |
| 26 | |
| 27 | // No lifetime extension when we're binding a reference to an lvalue. |
Stephen Lin | 93ab6bf | 2013-08-15 06:47:53 +0000 | [diff] [blame] | 28 | // CHECK-LABEL: define void @_Z5test1RU8__strongP11objc_objectRU6__weakS0_ |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 29 | void test1(__strong id &x, __weak id &y) { |
| 30 | // CHECK-NOT: release |
| 31 | const __strong id &ref1 = x; |
| 32 | const __autoreleasing id &ref2 = x; |
| 33 | const __weak id &ref3 = y; |
| 34 | // CHECK: ret void |
| 35 | } |
| 36 | |
| 37 | typedef __strong id strong_id; |
| 38 | |
| 39 | //CHECK: define void @_Z5test3v |
| 40 | void test3() { |
| 41 | // CHECK: call i8* @objc_initWeak |
| 42 | // CHECK-NEXT: store i8** |
| 43 | const __weak id &ref = strong_id(); |
| 44 | // CHECK-NEXT: call void @_Z6calleev() |
| 45 | callee(); |
| 46 | // CHECK-NEXT: call void @objc_destroyWeak |
| 47 | // CHECK-NEXT: ret void |
| 48 | } |
| 49 | |
Stephen Lin | 93ab6bf | 2013-08-15 06:47:53 +0000 | [diff] [blame] | 50 | // CHECK-LABEL: define void @_Z5test4RU8__strongP11objc_object |
Douglas Gregor | d7b2316 | 2011-06-22 16:12:01 +0000 | [diff] [blame] | 51 | void test4(__strong id &x) { |
| 52 | // CHECK: call i8* @objc_retain |
| 53 | __strong A* const &ar = x; |
| 54 | // CHECK: store i32 17, i32* |
| 55 | int i = 17; |
| 56 | // CHECK: call void @objc_release( |
| 57 | // CHECK: ret void |
| 58 | } |
| 59 | |
| 60 | void sink(__strong A* &&); |
| 61 | |
Stephen Lin | 93ab6bf | 2013-08-15 06:47:53 +0000 | [diff] [blame] | 62 | // CHECK-LABEL: define void @_Z5test5RU8__strongP11objc_object |
Douglas Gregor | d7b2316 | 2011-06-22 16:12:01 +0000 | [diff] [blame] | 63 | void test5(__strong id &x) { |
John McCall | cec52f0 | 2011-08-26 21:08:13 +0000 | [diff] [blame] | 64 | // CHECK: [[REFTMP:%.*]] = alloca {{%.*}}*, align 8 |
| 65 | // CHECK: [[OBJ_ID:%.*]] = call i8* @objc_retain( |
| 66 | // CHECK-NEXT: [[OBJ_A:%.*]] = bitcast i8* [[OBJ_ID]] to [[A:%[a-zA-Z0-9]+]]* |
Douglas Gregor | d7b2316 | 2011-06-22 16:12:01 +0000 | [diff] [blame] | 67 | // CHECK-NEXT: store [[A]]* [[OBJ_A]], [[A]]** [[REFTMP:%[a-zA-Z0-9]+]] |
| 68 | // CHECK-NEXT: call void @_Z4sinkOU8__strongP1A |
| 69 | sink(x); |
Pirama Arumuga Nainar | 3ea9e33 | 2015-04-08 08:57:32 -0700 | [diff] [blame] | 70 | // CHECK-NEXT: [[OBJ_A:%[a-zA-Z0-9]+]] = load [[A]]*, [[A]]** [[REFTMP]] |
Douglas Gregor | d7b2316 | 2011-06-22 16:12:01 +0000 | [diff] [blame] | 71 | // CHECK-NEXT: [[OBJ_ID:%[a-zA-Z0-9]+]] = bitcast [[A]]* [[OBJ_A]] to i8* |
| 72 | // CHECK-NEXT: call void @objc_release |
| 73 | // CHECK-NEXT: store i32 17, i32 |
| 74 | int i = 17; |
| 75 | // CHECK-NEXT: ret void |
| 76 | } |
| 77 | |
Stephen Lin | 93ab6bf | 2013-08-15 06:47:53 +0000 | [diff] [blame] | 78 | // CHECK-LABEL: define internal void @__cxx_global_var_init( |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 79 | // CHECK: call i8* @_Z9getObjectv |
| 80 | // CHECK-NEXT: call i8* @objc_retainAutoreleasedReturnValue |
| 81 | const __strong id &global_ref = getObject(); |
| 82 | |
| 83 | // Note: we intentionally don't release the object. |
| 84 | |