1; RUN: opt < %s -asan -asan-module -enable-new-pm=0 -asan-use-private-alias=0 -asan-globals-live-support=1 -S | FileCheck %s --check-prefixes=CHECK,NOALIAS 2; RUN: opt < %s -passes='asan-pipeline' -asan-use-private-alias=0 -asan-globals-live-support=1 -S | FileCheck %s --check-prefixes=CHECK,NOALIAS 3 4; RUN: opt < %s -asan -asan-module -enable-new-pm=0 -asan-use-private-alias=1 -asan-globals-live-support=1 -S | FileCheck %s --check-prefixes=CHECK,ALIAS 5; RUN: opt < %s -passes='asan-pipeline' -asan-use-private-alias=1 -asan-globals-live-support=1 -S | FileCheck %s --check-prefixes=CHECK,ALIAS 6; RUN: opt < %s -asan -asan-module -enable-new-pm=0 -asan-use-private-alias=1 -asan-globals-live-support=1 -asan-mapping-scale=5 -S | FileCheck %s --check-prefixes=CHECK,ALIAS 7; RUN: opt < %s -passes='asan-pipeline' -asan-use-private-alias=1 -asan-globals-live-support=1 -asan-mapping-scale=5 -S | FileCheck %s --check-prefixes=CHECK,ALIAS 8 9target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 10target triple = "x86_64-unknown-linux-gnu" 11 12; Globals: 13@global = global i32 0, align 4 14@dyn_init_global = global i32 0, align 4 15@blacklisted_global = global i32 0, align 4 16@_ZZ4funcvE10static_var = internal global i32 0, align 4 17@.str = private unnamed_addr constant [14 x i8] c"Hello, world!\00", align 1 18@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_asan_globals.cpp, i8* null }] 19 20; Check that globals were instrumented: 21 22; CHECK: @global = global { i32, [60 x i8] } zeroinitializer, comdat, align 32 23; CHECK: @.str = internal constant { [14 x i8], [50 x i8] } { [14 x i8] c"Hello, world!\00", [50 x i8] zeroinitializer }, comdat($".str${{[01-9a-f]+}}"), align 32 24 25; Check emitted location descriptions: 26; CHECK: [[VARNAME:@___asan_gen_.[0-9]+]] = private unnamed_addr constant [7 x i8] c"global\00", align 1 27; CHECK: [[FILENAME:@___asan_gen_.[0-9]+]] = private unnamed_addr constant [22 x i8] c"/tmp/asan-globals.cpp\00", align 1 28; CHECK: [[LOCDESCR:@___asan_gen_.[0-9]+]] = private unnamed_addr constant { [22 x i8]*, i32, i32 } { [22 x i8]* [[FILENAME]], i32 5, i32 5 } 29; NOALIAS: @__asan_global_global = {{.*}}i64 ptrtoint ({ i32, [60 x i8] }* @global to i64){{.*}} section "asan_globals"{{.*}}, !associated 30; NOALIAS: @__asan_global_.str = {{.*}}i64 ptrtoint ({ [14 x i8], [50 x i8] }* @{{.str|1}} to i64){{.*}} section "asan_globals"{{.*}}, !associated 31; ALIAS: @__asan_global_global = {{.*}}i64 ptrtoint ({ i32, [60 x i8] }* @0 to i64){{.*}} section "asan_globals"{{.*}}, !associated 32; ALIAS: @__asan_global_.str = {{.*}}i64 ptrtoint ({ [14 x i8], [50 x i8] }* @3 to i64){{.*}} section "asan_globals"{{.*}}, !associated 33 34; The metadata has to be inserted to llvm.compiler.used to avoid being stripped 35; during LTO. 36; CHECK: @llvm.compiler.used {{.*}} @__asan_global_global {{.*}} section "llvm.metadata" 37 38; Check that location descriptors and global names were passed into __asan_register_globals: 39; CHECK: call void @__asan_register_elf_globals(i64 ptrtoint (i64* @___asan_globals_registered to i64), i64 ptrtoint (i64* @__start_asan_globals to i64), i64 ptrtoint (i64* @__stop_asan_globals to i64)) 40 41; Function Attrs: nounwind sanitize_address 42define internal void @__cxx_global_var_init() #0 section ".text.startup" { 43entry: 44 %0 = load i32, i32* @global, align 4 45 store i32 %0, i32* @dyn_init_global, align 4 46 ret void 47} 48 49; Function Attrs: nounwind sanitize_address 50define void @_Z4funcv() #1 { 51entry: 52 %literal = alloca i8*, align 8 53 store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i32 0, i32 0), i8** %literal, align 8 54 ret void 55} 56 57; Function Attrs: nounwind sanitize_address 58define internal void @_GLOBAL__sub_I_asan_globals.cpp() #0 section ".text.startup" { 59entry: 60 call void @__cxx_global_var_init() 61 ret void 62} 63 64attributes #0 = { nounwind sanitize_address } 65attributes #1 = { nounwind sanitize_address "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 66 67!llvm.asan.globals = !{!0, !1, !2, !3, !4} 68!llvm.ident = !{!5} 69 70!0 = !{i32* @global, !6, !"global", i1 false, i1 false} 71!1 = !{i32* @dyn_init_global, !7, !"dyn_init_global", i1 true, i1 false} 72!2 = !{i32* @blacklisted_global, null, null, i1 false, i1 true} 73!3 = !{i32* @_ZZ4funcvE10static_var, !8, !"static_var", i1 false, i1 false} 74!4 = !{[14 x i8]* @.str, !9, !"<string literal>", i1 false, i1 false} 75 76!5 = !{!"clang version 3.5.0 (211282)"} 77 78!6 = !{!"/tmp/asan-globals.cpp", i32 5, i32 5} 79!7 = !{!"/tmp/asan-globals.cpp", i32 7, i32 5} 80!8 = !{!"/tmp/asan-globals.cpp", i32 12, i32 14} 81!9 = !{!"/tmp/asan-globals.cpp", i32 14, i32 25} 82