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1; RUN: opt -passes=objc-arc -S %s | FileCheck %s2 3%0 = type opaque4 5; Make sure ARC optimizer doesn't sink @obj_retain past @llvm.objc.clang.arc.use.6 7; CHECK: call ptr @llvm.objc.retain8; CHECK: call void (...) @llvm.objc.clang.arc.use(9; CHECK: call ptr @llvm.objc.retain10; CHECK: call void (...) @llvm.objc.clang.arc.use(11 12define void @runTest() local_unnamed_addr {13 %1 = alloca ptr, align 814 %2 = alloca ptr, align 815 %3 = tail call ptr @foo0()16 %4 = tail call ptr @llvm.objc.retainAutoreleasedReturnValue(ptr %3)17 store ptr %3, ptr %1, align 818 call void @foo1(ptr nonnull %1)19 %5 = load ptr, ptr %1, align 820 %6 = call ptr @llvm.objc.retain(ptr %5)21 call void (...) @llvm.objc.clang.arc.use(ptr %3)22 call void @llvm.objc.release(ptr %3)23 store ptr %5, ptr %2, align 824 call void @foo1(ptr nonnull %2)25 %7 = load ptr, ptr %2, align 826 %8 = call ptr @llvm.objc.retain(ptr %7)27 call void (...) @llvm.objc.clang.arc.use(ptr %5)28 %tmp1 = load ptr, ptr %2, align 829 call void @llvm.objc.release(ptr %5)30 call void @foo2(ptr %7)31 call void @llvm.objc.release(ptr %7)32 ret void33}34 35declare ptr @foo0() local_unnamed_addr36declare void @foo1(ptr) local_unnamed_addr37declare void @foo2(ptr) local_unnamed_addr38 39declare ptr @llvm.objc.retainAutoreleasedReturnValue(ptr) local_unnamed_addr40declare ptr @llvm.objc.retain(ptr) local_unnamed_addr41declare void @llvm.objc.clang.arc.use(...) local_unnamed_addr42declare void @llvm.objc.release(ptr) local_unnamed_addr43