1 ; Test handling of llvm.lifetime intrinsics with C++ exceptions. 2 ; RUN: opt < %s -asan -asan-module -asan-use-after-scope -asan-use-after-return=0 -S | FileCheck %s 3 4 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 5 target triple = "x86_64-unknown-linux-gnu" 6 7 %struct.ABC = type { i32 } 8 9 $_ZN3ABCD2Ev = comdat any 10 $_ZTS3ABC = comdat any 11 $_ZTI3ABC = comdat any 12 13 @_ZTVN10__cxxabiv117__class_type_infoE = external global i8* 14 @_ZTS3ABC = linkonce_odr constant [5 x i8] c"3ABC\00", comdat 15 @_ZTI3ABC = linkonce_odr constant { i8*, i8* } { i8* bitcast (i8** getelementptr inbounds (i8*, i8** @_ZTVN10__cxxabiv117__class_type_infoE, i64 2) to i8*), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @_ZTS3ABC, i32 0, i32 0) }, comdat 16 17 define void @Throw() sanitize_address personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) { 18 ; CHECK-LABEL: define void @Throw() 19 entry: 20 %x = alloca %struct.ABC, align 4 21 %0 = bitcast %struct.ABC* %x to i8* 22 23 ; Poison memory in prologue: F1F1F1F1F8F3F3F3 24 ; CHECK: store i64 -868082052615769615, i64* %{{[0-9]+}} 25 26 call void @llvm.lifetime.start.p0i8(i64 4, i8* %0) 27 ; CHECK: store i8 4, i8* %{{[0-9]+}} 28 ; CHECK-NEXT: @llvm.lifetime.start 29 30 %exception = call i8* @__cxa_allocate_exception(i64 4) 31 invoke void @__cxa_throw(i8* %exception, i8* bitcast ({ i8*, i8* }* @_ZTI3ABC to i8*), i8* bitcast (void (%struct.ABC*)* @_ZN3ABCD2Ev to i8*)) noreturn 32 to label %unreachable unwind label %lpad 33 ; CHECK: call void @__asan_handle_no_return 34 ; CHECK-NEXT: @__cxa_throw 35 36 lpad: 37 %1 = landingpad { i8*, i32 } 38 cleanup 39 call void @_ZN3ABCD2Ev(%struct.ABC* nonnull %x) 40 call void @llvm.lifetime.end.p0i8(i64 4, i8* %0) 41 ; CHECK: store i8 -8, i8* %{{[0-9]+}} 42 ; CHECK-NEXT: @llvm.lifetime.end 43 44 resume { i8*, i32 } %1 45 ; CHECK: store i64 0, i64* %{{[0-9]+}} 46 ; CHECK-NEXT: resume 47 48 unreachable: 49 unreachable 50 } 51 52 %rtti.TypeDescriptor9 = type { i8**, i8*, [10 x i8] } 53 %eh.CatchableType = type { i32, i32, i32, i32, i32, i32, i32 } 54 %eh.CatchableTypeArray.1 = type { i32, [1 x i32] } 55 %eh.ThrowInfo = type { i32, i32, i32, i32 } 56 57 $"\01??1ABC@@QEAA@XZ" = comdat any 58 $"\01??_R0?AUABC@@@8" = comdat any 59 $"_CT??_R0?AUABC@@@84" = comdat any 60 $"_CTA1?AUABC@@" = comdat any 61 $"_TI1?AUABC@@" = comdat any 62 63 @"\01??_7type_info@@6B@" = external constant i8* 64 @"\01??_R0?AUABC@@@8" = linkonce_odr global %rtti.TypeDescriptor9 { i8** @"\01??_7type_info@@6B@", i8* null, [10 x i8] c".?AUABC@@\00" }, comdat 65 @__ImageBase = external constant i8 66 @"_CT??_R0?AUABC@@@84" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor9* @"\01??_R0?AUABC@@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0, i32 -1, i32 0, i32 4, i32 0 }, section ".xdata", comdat 67 @"_CTA1?AUABC@@" = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.1 { i32 1, [1 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableType* @"_CT??_R0?AUABC@@@84" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32)] }, section ".xdata", comdat 68 @"_TI1?AUABC@@" = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (void (%struct.ABC*)* @"\01??1ABC@@QEAA@XZ" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableTypeArray.1* @"_CTA1?AUABC@@" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, section ".xdata", comdat 69 70 define void @ThrowWin() sanitize_address personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) { 71 ; CHECK-LABEL: define void @ThrowWin() 72 entry: 73 %x = alloca %struct.ABC, align 4 74 %tmp = alloca %struct.ABC, align 4 75 %0 = bitcast %struct.ABC* %x to i8* 76 77 ; Poison memory in prologue: F1F1F1F1F8F304F2 78 ; CHECK: store i64 -935355671561244175, i64* %{{[0-9]+}} 79 80 call void @llvm.lifetime.start.p0i8(i64 4, i8* %0) 81 ; CHECK: store i8 4, i8* %{{[0-9]+}} 82 ; CHECK-NEXT: @llvm.lifetime.start 83 84 %1 = bitcast %struct.ABC* %tmp to i8* 85 invoke void @_CxxThrowException(i8* %1, %eh.ThrowInfo* nonnull @"_TI1?AUABC@@") noreturn 86 to label %unreachable unwind label %ehcleanup 87 ; CHECK: call void @__asan_handle_no_return 88 ; CHECK-NEXT: @_CxxThrowException 89 90 ehcleanup: 91 %2 = cleanuppad within none [] 92 call void @"\01??1ABC@@QEAA@XZ"(%struct.ABC* nonnull %x) [ "funclet"(token %2) ] 93 call void @llvm.lifetime.end.p0i8(i64 4, i8* %0) 94 ; CHECK: store i8 -8, i8* %{{[0-9]+}} 95 ; CHECK-NEXT: @llvm.lifetime.end 96 97 cleanupret from %2 unwind to caller 98 ; CHECK: store i64 0, i64* %{{[0-9]+}} 99 ; CHECK-NEXT: cleanupret 100 101 unreachable: 102 unreachable 103 } 104 105 106 declare i32 @__gxx_personality_v0(...) 107 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) 108 declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) 109 declare void @__cxa_throw(i8*, i8*, i8*) local_unnamed_addr 110 declare i8* @__cxa_allocate_exception(i64) local_unnamed_addr 111 declare void @_ZN3ABCD2Ev(%struct.ABC* %this) unnamed_addr 112 declare void @"\01??1ABC@@QEAA@XZ"(%struct.ABC* %this) 113 declare void @_CxxThrowException(i8*, %eh.ThrowInfo*) 114 declare i32 @__CxxFrameHandler3(...) 115
