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1// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -O2 -std=c++11 -disable-llvm-passes -o - %s | FileCheck %s2 3// define{{.*}} void @_Z11simple_moveRU8__strongP11objc_objectS2_4void simple_move(__strong id &x, __strong id &y) {5 // CHECK: = load ptr, ptr6 // CHECK: store ptr null7 // CHECK: = load ptr, ptr8 // CHECK: store ptr9 // CHECK-NEXT: call void @llvm.objc.release10 x = static_cast<__strong id&&>(y);11 // CHECK-NEXT: ret void12}13 14template<typename T>15struct remove_reference {16 typedef T type;17};18 19template<typename T>20struct remove_reference<T&> {21 typedef T type;22};23 24template<typename T>25struct remove_reference<T&&> {26 typedef T type;27};28 29template<typename T> 30typename 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_35void library_move(__strong id &x, __strong id &y) {36 // CHECK: call noundef nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) ptr @_Z4moveIRU8__strongP11objc_objectEON16remove_referenceIT_E4typeEOS5_37 // CHECK: load ptr, ptr38 // CHECK: store ptr null, ptr39 // CHECK: load ptr, ptr40 // CHECK-NEXT: load ptr, ptr41 // CHECK-NEXT: store ptr42 // CHECK-NEXT: call void @llvm.objc.release43 // CHECK-NEXT: ret void44 x = move(y);45}46 47// CHECK-LABEL: define{{.*}} void @_Z12library_moveRU8__strongP11objc_object48void library_move(__strong id &y) {49 // CHECK: [[X:%x]] = alloca ptr, align 850 // CHECK: [[I:%.*]] = alloca i32, align 451 // CHECK: call void @llvm.lifetime.start.p0(ptr [[X]])52 // CHECK: [[Y:%[a-zA-Z0-9]+]] = call noundef nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) ptr @_Z4moveIRU8__strongP11objc_objectEON16remove_referenceIT_E4typeEOS5_53 // Load the object54 // CHECK-NEXT: [[OBJ:%[a-zA-Z0-9]+]] = load ptr, ptr [[Y]]55 // Null out y56 // CHECK-NEXT: store ptr null, ptr [[Y]]57 // Initialize x with the object58 // CHECK-NEXT: store ptr [[OBJ]], ptr [[X:%[a-zA-Z0-9]+]]59 id x = move(y);60 61 // CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[I]])62 // CHECK-NEXT: store i32 1763 int i = 17;64 // CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[I]])65 // CHECK-NEXT: [[OBJ:%[a-zA-Z0-9]+]] = load ptr, ptr [[X]]66 // CHECK-NEXT: call void @llvm.objc.release(ptr [[OBJ]])67 // CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[X]])68 // CHECK-NEXT: ret void69}70 71// CHECK-LABEL: define{{.*}} void @_Z10const_moveRU8__strongKP11objc_object(72void const_move(const __strong id &x) {73 // CHECK: [[Y:%y]] = alloca ptr,74 // CHECK: [[X:%.*]] = call noundef nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) ptr @_Z4moveIRU8__strongKP11objc_objectEON16remove_referenceIT_E4typeEOS5_(75 // CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[X]]76 // CHECK-NEXT: [[T1:%.*]] = call ptr @llvm.objc.retain(ptr [[T0]])77 // CHECK-NEXT: store ptr [[T1]], ptr [[Y]]78 // CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[Y]]79 // CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]])80 id y = move(x);81}82