| Douglas Gregor | d1bd98a | 2011-06-22 16:32:26 +0000 | [diff] [blame^] | 1 | // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-nonfragile-abi -fblocks -fobjc-arc -O2 -std=c++0x -disable-llvm-optzns -o - %s | FileCheck %s |
| 2 | |
| 3 | // define void @_Z11simple_moveRU8__strongP11objc_objectS2_ |
| 4 | void simple_move(__strong id &x, __strong id &y) { |
| 5 | // CHECK: = load i8** |
| 6 | // CHECK: store i8* null |
| 7 | // CHECK: = load i8** |
| 8 | // CHECK: store i8* |
| 9 | // CHECK-NEXT: call void @objc_release |
| 10 | x = static_cast<__strong id&&>(y); |
| 11 | // CHECK-NEXT: ret void |
| 12 | } |
| 13 | |
| 14 | template<typename T> |
| 15 | struct remove_reference { |
| 16 | typedef T type; |
| 17 | }; |
| 18 | |
| 19 | template<typename T> |
| 20 | struct remove_reference<T&> { |
| 21 | typedef T type; |
| 22 | }; |
| 23 | |
| 24 | template<typename T> |
| 25 | struct remove_reference<T&&> { |
| 26 | typedef T type; |
| 27 | }; |
| 28 | |
| 29 | template<typename T> |
| 30 | typename remove_reference<T>::type&& move(T &&x) { |
| 31 | return static_cast<typename remove_reference<T>::type&&>(x); |
| 32 | } |
| 33 | |
| 34 | // CHECK: define void @_Z12library_moveRU8__strongP11objc_objectS2_ |
| 35 | void library_move(__strong id &x, __strong id &y) { |
| 36 | // CHECK: call i8** @_Z4moveIRU8__strongP11objc_objectEON16remove_referenceIT_E4typeEOS5_ |
| 37 | // CHECK: load i8** |
| 38 | // CHECK: store i8* null, i8** |
| 39 | // CHECK: load i8*** |
| 40 | // CHECK-NEXT: load i8** |
| 41 | // CHECK-NEXT: store i8* |
| 42 | // CHECK-NEXT: call void @objc_release |
| 43 | // CHECK-NEXT: ret void |
| 44 | x = move(y); |
| 45 | } |
| 46 | |
| 47 | // CHECK: define void @_Z12library_moveRU8__strongP11objc_object |
| 48 | void library_move(__strong id &y) { |
| 49 | // CHECK: [[Y:%[a-zA-Z0-9]+]] = call i8** @_Z4moveIRU8__strongP11objc_objectEON16remove_referenceIT_E4typeEOS5_ |
| 50 | // Load the object |
| 51 | // CHECK-NEXT: [[OBJ:%[a-zA-Z0-9]+]] = load i8** [[Y]] |
| 52 | // Null out y |
| 53 | // CHECK-NEXT: store i8* null, i8** [[Y]] |
| 54 | // Initialize x with the object |
| 55 | // CHECK-NEXT: store i8* [[OBJ]], i8** [[X:%[a-zA-Z0-9]+]] |
| 56 | id x = move(y); |
| 57 | |
| 58 | // CHECK-NEXT: store i32 17 |
| 59 | int i = 17; |
| 60 | // CHECK-NEXT: [[OBJ:%[a-zA-Z0-9]+]] = load i8** [[X]] |
| 61 | // CHECK-NEXT: call void @objc_release(i8* [[OBJ]]) |
| 62 | // CHECK-NEXT: ret void |
| 63 | } |