1; RUN: rm -rf %t && split-file %s %t 2; RUN: opt < %t/a.ll -passes=asan -asan-globals-live-support=0 -mtriple=x86_64-unknown-linux-gnu -S | FileCheck --check-prefix=CHECK %s 3; RUN: opt < %t/a.ll -passes=asan -asan-globals-live-support=0 -mtriple=x86_64-apple-macosx10.11.0 -S | FileCheck --check-prefix=CHECK %s 4; RUN: opt < %t/a.ll -passes=asan -asan-globals-live-support=0 -mtriple=x86_64-pc-windows-msvc19.0.24215 -S | FileCheck --check-prefix=CHECK %s 5; RUN: opt < %t/a.ll -passes=asan -asan-globals-live-support=0 -asan-mapping-scale=5 -mtriple=x86_64-unknown-linux-gnu -S | FileCheck --check-prefixes=CHECK,CHECK-S5 %s 6 7; RUN: opt < %t/empty.ll -passes=asan -asan-globals-live-support=0 -mtriple=x86_64-unknown-linux-gnu -S | FileCheck --check-prefix=ELF-NOGC %s 8 9;--- a.ll 10target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 11 12; Globals: 13@global = global i32 0, align 4 14@dyn_init_global = global i32 0, align 4 15@blocked_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, ptr, ptr }] [{ i32, ptr, ptr } { i32 65535, ptr @_GLOBAL__sub_I_asan_globals.cpp, ptr null }] 19 20; Check that globals were instrumented: 21; CHECK: @global = global { i32, [28 x i8] } zeroinitializer, align 32 22; CHECK: @.str = internal constant { [14 x i8], [18 x i8] } { [14 x i8] c"Hello, world!\00", [18 x i8] zeroinitializer }{{.*}}, align 32 23 24; Check emitted location descriptions: 25; CHECK: [[VARNAME:@___asan_gen_global[.0-9]*]] = private unnamed_addr constant [7 x i8] c"global\00", align 1 26 27; Check that location descriptors and global names were passed into __asan_register_globals: 28; CHECK: i64 ptrtoint (ptr [[VARNAME]] to i64) 29; Check alignment of metadata_array. 30; CHECK-S5-SAME: {{align 32$}} 31 32; Function Attrs: nounwind sanitize_address 33define internal void @__cxx_global_var_init() #0 section ".text.startup" { 34entry: 35 %0 = load i32, ptr @global, align 4 36 store i32 %0, ptr @dyn_init_global, align 4 37 ret void 38} 39 40; Function Attrs: nounwind sanitize_address 41define void @_Z4funcv() #1 { 42entry: 43 %literal = alloca ptr, align 8 44 store ptr @.str, ptr %literal, align 8 45 ret void 46} 47 48; Function Attrs: nounwind sanitize_address 49define internal void @_GLOBAL__sub_I_asan_globals.cpp() #0 section ".text.startup" { 50entry: 51 call void @__cxx_global_var_init() 52 ret void 53} 54 55attributes #0 = { nounwind sanitize_address } 56attributes #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" } 57 58!llvm.ident = !{!5} 59 60!5 = !{!"clang version 3.5.0 (211282)"} 61 62!6 = !{!"/tmp/asan-globals.cpp", i32 5, i32 5} 63!7 = !{!"/tmp/asan-globals.cpp", i32 7, i32 5} 64!8 = !{!"/tmp/asan-globals.cpp", i32 12, i32 14} 65!9 = !{!"/tmp/asan-globals.cpp", i32 14, i32 25} 66 67;; In the presence of instrumented global variables, asan.module_ctor do not use comdat. 68; CHECK: define internal void @asan.module_ctor() #[[#ATTR:]] { 69 70; ELF-NOGC: define internal void @asan.module_ctor() #[[#ATTR:]] comdat { 71 72;--- empty.ll 73