1 ; RUN: opt < %s -asan -asan-module -S | FileCheck %s
2 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
3 target triple = "x86_64-unknown-linux-gnu"
4 @xxx = internal global i32 0, align 4 ; With dynamic initializer.
5 @XXX = global i32 0, align 4 ; With dynamic initializer.
6 @yyy = internal global i32 0, align 4 ; W/o dynamic initializer.
7 @YYY = global i32 0, align 4 ; W/o dynamic initializer.
8 ; Clang will emit the following metadata identifying @xxx as dynamically
10 !0 = metadata !{i32* @xxx}
11 !1 = metadata !{i32* @XXX}
12 !llvm.asan.dynamically_initialized_globals = !{!0, !1}
14 define i32 @initializer() uwtable {
19 define internal void @__cxx_global_var_init() section ".text.startup" {
21 %call = call i32 @initializer()
22 store i32 %call, i32* @xxx, align 4
26 define internal void @_GLOBAL__I_a() sanitize_address section ".text.startup" {
28 call void @__cxx_global_var_init()
32 ; Clang indicated that @xxx was dynamically initailized.
33 ; __asan_{before,after}_dynamic_init should be called from _GLOBAL__I_a
35 ; CHECK: define internal void @_GLOBAL__I_a
37 ; CHECK: call void @__asan_before_dynamic_init
38 ; CHECK: call void @__cxx_global_var_init
39 ; CHECK: call void @__asan_after_dynamic_init
42 ; Check that xxx is instrumented.
43 define void @touch_xxx() sanitize_address {
44 store i32 0, i32 *@xxx, align 4
46 ; CHECK: define void @touch_xxx
47 ; CHECK: call void @__asan_report_store4
51 ; Check that XXX is instrumented.
52 define void @touch_XXX() sanitize_address {
53 store i32 0, i32 *@XXX, align 4
55 ; CHECK: define void @touch_XXX
56 ; CHECK: call void @__asan_report_store4
61 ; Check that yyy is NOT instrumented (as it does not have dynamic initializer).
62 define void @touch_yyy() sanitize_address {
63 store i32 0, i32 *@yyy, align 4
65 ; CHECK: define void @touch_yyy
66 ; CHECK-NOT: call void @__asan_report_store4
70 ; Check that YYY is NOT instrumented (as it does not have dynamic initializer).
71 define void @touch_YYY() sanitize_address {
72 store i32 0, i32 *@YYY, align 4
74 ; CHECK: define void @touch_YYY
75 ; CHECK-NOT: call void @__asan_report_store4