1; This file consists of various tests which ensure that the objc-arc-annotations 2; are working correctly. In the future, I will use this in other lit tests to 3; check the data flow analysis of ARC. 4 5; REQUIRES: asserts 6; RUN: opt -S -objc-arc -enable-objc-arc-annotations < %s | FileCheck %s 7 8declare i8* @objc_retain(i8*) 9declare i8* @objc_retainAutoreleasedReturnValue(i8*) 10declare void @objc_release(i8*) 11declare i8* @objc_autorelease(i8*) 12declare i8* @objc_autoreleaseReturnValue(i8*) 13declare void @objc_autoreleasePoolPop(i8*) 14declare i8* @objc_autoreleasePoolPush() 15declare i8* @objc_retainBlock(i8*) 16 17declare i8* @objc_retainedObject(i8*) 18declare i8* @objc_unretainedObject(i8*) 19declare i8* @objc_unretainedPointer(i8*) 20 21declare void @use_pointer(i8*) 22declare void @callee() 23declare void @callee_fnptr(void ()*) 24declare void @invokee() 25declare i8* @returner() 26 27; Simple retain+release pair deletion, with some intervening control 28; flow and harmless instructions. 29 30; CHECK-LABEL: define void @test0( 31; CHECK: entry: 32; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_None) 33; CHECK: %0 = tail call i8* @objc_retain(i8* %a) #0, !llvm.arc.annotation.bottomup ![[ANN0:[0-9]+]], !llvm.arc.annotation.topdown ![[ANN1:[0-9]+]] 34; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Use) 35; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain) 36; CHECK: t: 37; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain) 38; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Use) 39; CHECK: store float 2.000000e+00, float* %b, !llvm.arc.annotation.bottomup ![[ANN2:[0-9]+]] 40; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Release) 41; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain) 42; CHECK: f: 43; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain) 44; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Use) 45; CHECK: store i32 7, i32* %x, !llvm.arc.annotation.bottomup ![[ANN2]] 46; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Release) 47; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain) 48; CHECK: return: 49; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain) 50; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Release) 51; CHECK: call void @objc_release(i8* %c) #0, !llvm.arc.annotation.bottomup ![[ANN3:[0-9]+]], !llvm.arc.annotation.topdown ![[ANN4:[0-9]+]] 52; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_None) 53; CHECK: } 54define void @test0(i32* %x, i1 %p) nounwind { 55entry: 56 %a = bitcast i32* %x to i8* 57 %0 = call i8* @objc_retain(i8* %a) nounwind 58 br i1 %p, label %t, label %f 59 60t: 61 store i8 3, i8* %a 62 %b = bitcast i32* %x to float* 63 store float 2.0, float* %b 64 br label %return 65 66f: 67 store i32 7, i32* %x 68 br label %return 69 70return: 71 %c = bitcast i32* %x to i8* 72 call void @objc_release(i8* %c) nounwind 73 ret void 74} 75 76!0 = metadata !{} 77 78; CHECK: ![[ANN0]] = metadata !{metadata !"(test0,%x)", metadata !"S_Use", metadata !"S_None"} 79; CHECK: ![[ANN1]] = metadata !{metadata !"(test0,%x)", metadata !"S_None", metadata !"S_Retain"} 80; CHECK: ![[ANN2]] = metadata !{metadata !"(test0,%x)", metadata !"S_Release", metadata !"S_Use"} 81; CHECK: ![[ANN3]] = metadata !{metadata !"(test0,%x)", metadata !"S_None", metadata !"S_Release"} 82; CHECK: ![[ANN4]] = metadata !{metadata !"(test0,%x)", metadata !"S_Retain", metadata !"S_None"} 83 84