| // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-runtime-has-weak -o - %s | FileCheck %s |
| // rdar://10849570 |
| |
| @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 i8* @llvm.objc.loadWeakRetained(i8** {{%.*}}) |
| // CHECK-NEXT: [[SEVENTEEN:%.*]] = bitcast i8* [[SIXTEEN]] to {{%.*}} |
| // CHECK-NEXT: [[EIGHTEEN:%.*]] = load i8*, i8** @OBJC_SELECTOR_REFERENCES_.6 |
| // CHECK-NEXT: [[NINETEEN:%.*]] = bitcast %0* [[SEVENTEEN]] to i8* |
| // CHECK-NEXT: call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend |
| // CHECK-NEXT: [[TWENTY:%.*]] = bitcast %0* [[SEVENTEEN]] to i8* |
| // CHECK-NEXT: call void @llvm.objc.release(i8* [[TWENTY]]) |
| |
| 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 i8* |
| // CHECK-NEXT: [[INCRTEMP:%.*]] = alloca i8* |
| // CHECK-NEXT: [[CONDCLEANUPSAVE:%.*]] = alloca i8* |
| // CHECK-NEXT: [[CONDCLEANUP:%.*]] = alloca i1 |
| // CHECK-NEXT: store i32 |
| // CHECK-NEXT: store i8* null, i8** [[WEAK]] |
| // CHECK: [[COND1:%.*]] = phi i8** |
| // CHECK-NEXT: [[ICRISNULL:%.*]] = icmp eq i8** [[COND1]], null |
| // CHECK-NEXT: [[ICRARGUMENT:%.*]] = select i1 [[ICRISNULL]], i8** null, i8** [[INCRTEMP]] |
| // CHECK-NEXT: store i1 false, i1* [[CONDCLEANUP]] |
| // CHECK-NEXT: br i1 [[ICRISNULL]], label [[ICRCONT:%.*]], label [[ICRCOPY:%.*]] |
| // CHECK: [[ONE:%.*]] = call i8* @llvm.objc.loadWeakRetained( |
| // CHECK-NEXT: store i8* [[ONE]], i8** [[CONDCLEANUPSAVE]] |
| // CHECK-NEXT: store i1 true, i1* [[CONDCLEANUP]] |
| // CHECK-NEXT: store i8* [[ONE]], i8** [[INCRTEMP]] |
| // CHECK-NEXT: br label |
| |
| // CHECK: call void @test34_sink( |
| // CHECK-NEXT: [[ICRISNULL1:%.*]] = icmp eq i8** [[COND1]], null |
| // CHECK-NEXT: br i1 [[ICRISNULL1]], label [[ICRDONE:%.*]], label [[ICRWRITEBACK:%.*]] |
| // CHECK: [[TWO:%.*]] = load i8*, i8** [[INCRTEMP]] |
| // CHECK-NEXT: [[THREE:%.*]] = call i8* @llvm.objc.storeWeak( |
| // CHECK-NEXT: br label [[ICRDONE]] |
| // CHECK: [[CLEANUPISACTIVE:%.*]] = load i1, i1* [[CONDCLEANUP]] |
| // CHECK-NEXT: br i1 [[CLEANUPISACTIVE]], label [[CLEASNUPACTION:%.*]], label [[CLEANUPDONE:%.*]] |
| |
| // CHECK: [[FOUR:%.*]] = load i8*, i8** [[CONDCLEANUPSAVE]] |
| // CHECK-NEXT: call void @llvm.objc.release(i8* [[FOUR]]) |
| // CHECK-NEXT: br label |
| // CHECK: call void @llvm.objc.destroyWeak(i8** [[WEAK]]) |
| // CHECK-NEXT: ret void |