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1; RUN: rm -rf %t && split-file %s %t2; RUN: opt < %t/a.ll -passes=asan -asan-globals-live-support=0 -mtriple=x86_64-unknown-linux-gnu -S | FileCheck --check-prefix=CHECK %s3; RUN: opt < %t/a.ll -passes=asan -asan-globals-live-support=0 -mtriple=x86_64-apple-macosx10.11.0 -S | FileCheck --check-prefix=CHECK %s4; 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 %s5; 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 %s6 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 %s8 9;--- a.ll10target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"11 12; Globals:13@global = global i32 0, align 414@dyn_init_global = global i32 0, align 415@blocked_global = global i32 0, align 416@_ZZ4funcvE10static_var = internal global i32 0, align 417@.str = private unnamed_addr constant [14 x i8] c"Hello, world!\00", align 118@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 3222; CHECK: @.str = internal constant { [14 x i8], [18 x i8] } { [14 x i8] c"Hello, world!\00", [18 x i8] zeroinitializer }{{.*}}, align 3223 24; Check emitted location descriptions:25; CHECK: [[VARNAME:@___asan_gen_global[.0-9]*]] = private unnamed_addr constant [7 x i8] c"global\00", align 126 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_address33define internal void @__cxx_global_var_init() #0 section ".text.startup" {34entry:35 %0 = load i32, ptr @global, align 436 store i32 %0, ptr @dyn_init_global, align 437 ret void38}39 40; Function Attrs: nounwind sanitize_address41define void @_Z4funcv() #1 {42entry:43 %literal = alloca ptr, align 844 store ptr @.str, ptr %literal, align 845 ret void46}47 48; Function Attrs: nounwind sanitize_address49define internal void @_GLOBAL__sub_I_asan_globals.cpp() #0 section ".text.startup" {50entry:51 call void @__cxx_global_var_init()52 ret void53}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.ll73