1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -O2 -std=c++11 -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-LABEL: define void @_Z12library_moveRU8__strongP11objc_objectS2_ 35 void library_move(__strong id &x, __strong id &y) { 36 // CHECK: call nonnull 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-LABEL: define void @_Z12library_moveRU8__strongP11objc_object 48 void library_move(__strong id &y) { 49 // CHECK: [[Y:%[a-zA-Z0-9]+]] = call nonnull 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 } 64 65 // CHECK-LABEL: define void @_Z10const_moveRKU8__strongP11objc_object( 66 void const_move(const __strong id &x) { 67 // CHECK: [[Y:%.*]] = alloca i8*, 68 // CHECK: [[X:%.*]] = call nonnull i8** @_Z4moveIRKU8__strongP11objc_objectEON16remove_referenceIT_E4typeEOS5_( 69 // CHECK-NEXT: [[T0:%.*]] = load i8** [[X]] 70 // CHECK-NEXT: [[T1:%.*]] = call i8* @objc_retain(i8* [[T0]]) 71 // CHECK-NEXT: store i8* [[T1]], i8** [[Y]] 72 // CHECK-NEXT: [[T0:%.*]] = load i8** [[Y]] 73 // CHECK-NEXT: call void @objc_release(i8* [[T0]]) 74 id y = move(x); 75 } 76
