| // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-runtime-has-weak -o - %s | FileCheck %s |
| |
| @interface NSObject @end |
| |
| @interface SomeClass : NSObject |
| - (id) init; |
| @end |
| |
| @implementation SomeClass |
| - (void)foo { |
| } |
| - (id) init { |
| return 0; |
| } |
| + alloc { return 0; } |
| @end |
| |
| int main (int argc, const char * argv[]) { |
| @autoreleasepool { |
| SomeClass *objPtr1 = [[SomeClass alloc] init]; |
| __weak SomeClass *weakRef = objPtr1; |
| |
| [weakRef foo]; |
| |
| objPtr1 = (void *)0; |
| return 0; |
| } |
| } |
| |
| // CHECK: [[SIXTEEN:%.*]] = call ptr @llvm.objc.loadWeakRetained(ptr {{%.*}}) |
| // CHECK-NEXT: [[EIGHTEEN:%.*]] = load ptr, ptr @OBJC_SELECTOR_REFERENCES_.6 |
| // CHECK-NEXT: call void @objc_msgSend |
| // CHECK-NEXT: call void @llvm.objc.release(ptr [[SIXTEEN]]) |
| |
| void test1(int cond) { |
| extern void test34_sink(id *); |
| __weak id weak; |
| test34_sink(cond ? &weak : 0); |
| } |
| |
| // CHECK-LABEL: define{{.*}} void @test1( |
| // CHECK: [[CONDADDR:%.*]] = alloca i32 |
| // CHECK-NEXT: [[WEAK:%.*]] = alloca ptr |
| // CHECK-NEXT: [[INCRTEMP:%.*]] = alloca ptr |
| // CHECK-NEXT: [[CONDCLEANUPSAVE:%.*]] = alloca ptr |
| // CHECK-NEXT: [[CONDCLEANUP:%.*]] = alloca i1 |
| // CHECK-NEXT: store i32 |
| // CHECK-NEXT: store ptr null, ptr [[WEAK]] |
| // CHECK: [[COND1:%.*]] = phi ptr |
| // CHECK-NEXT: [[ICRISNULL:%.*]] = icmp eq ptr [[COND1]], null |
| // CHECK-NEXT: [[ICRARGUMENT:%.*]] = select i1 [[ICRISNULL]], ptr null, ptr [[INCRTEMP]] |
| // CHECK-NEXT: store i1 false, ptr [[CONDCLEANUP]] |
| // CHECK-NEXT: br i1 [[ICRISNULL]], label [[ICRCONT:%.*]], label [[ICRCOPY:%.*]] |
| // CHECK: [[ONE:%.*]] = call ptr @llvm.objc.loadWeakRetained( |
| // CHECK-NEXT: store ptr [[ONE]], ptr [[CONDCLEANUPSAVE]] |
| // CHECK-NEXT: store i1 true, ptr [[CONDCLEANUP]] |
| // CHECK-NEXT: store ptr [[ONE]], ptr [[INCRTEMP]] |
| // CHECK-NEXT: br label |
| |
| // CHECK: call void @test34_sink( |
| // CHECK-NEXT: [[ICRISNULL1:%.*]] = icmp eq ptr [[COND1]], null |
| // CHECK-NEXT: br i1 [[ICRISNULL1]], label [[ICRDONE:%.*]], label [[ICRWRITEBACK:%.*]] |
| // CHECK: [[TWO:%.*]] = load ptr, ptr [[INCRTEMP]] |
| // CHECK-NEXT: [[THREE:%.*]] = call ptr @llvm.objc.storeWeak( |
| // CHECK-NEXT: br label [[ICRDONE]] |
| // CHECK: [[CLEANUPISACTIVE:%.*]] = load i1, ptr [[CONDCLEANUP]] |
| // CHECK-NEXT: br i1 [[CLEANUPISACTIVE]], label [[CLEASNUPACTION:%.*]], label [[CLEANUPDONE:%.*]] |
| |
| // CHECK: [[FOUR:%.*]] = load ptr, ptr [[CONDCLEANUPSAVE]] |
| // CHECK-NEXT: call void @llvm.objc.release(ptr [[FOUR]]) |
| // CHECK-NEXT: br label |
| // CHECK: call void @llvm.objc.destroyWeak(ptr [[WEAK]]) |
| // CHECK-NEXT: ret void |