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 = global i32 0, align 4
6 ; If a global is present, __asan_[un]register_globals should be called from
9 ; CHECK: llvm.global_ctors
10 ; CHECK: @__asan_gen_ = private constant [8 x i8] c"<stdin>\00", align 1
11 ; CHECK: llvm.global_dtors
13 ; Test that we don't instrument global arrays with static initializer
14 ; indexed with constants in-bounds. But instrument all other cases.
16 @GlobSt = global [10 x i32] zeroinitializer, align 16 ; static initializer
17 @GlobDy = global [10 x i32] zeroinitializer, align 16 ; dynamic initializer
18 @GlobEx = external global [10 x i32] , align 16 ; extern initializer
20 ; GlobSt is declared here, and has static initializer -- ok to optimize.
21 define i32 @AccessGlobSt_0_2() sanitize_address {
23 %0 = load i32* getelementptr inbounds ([10 x i32]* @GlobSt, i64 0, i64 2), align 8
25 ; CHECK-LABEL: define i32 @AccessGlobSt_0_2
26 ; CHECK-NOT: __asan_report
30 ; GlobSt is accessed out of bounds -- can't optimize
31 define i32 @AccessGlobSt_0_12() sanitize_address {
33 %0 = load i32* getelementptr inbounds ([10 x i32]* @GlobSt, i64 0, i64 12), align 8
35 ; CHECK-LABEL: define i32 @AccessGlobSt_0_12
36 ; CHECK: __asan_report
40 ; GlobSt is accessed with Gep that has non-0 first index -- can't optimize.
41 define i32 @AccessGlobSt_1_2() sanitize_address {
43 %0 = load i32* getelementptr inbounds ([10 x i32]* @GlobSt, i64 1, i64 2), align 8
45 ; CHECK-LABEL: define i32 @AccessGlobSt_1_2
46 ; CHECK: __asan_report
50 ; GlobDy is declared with dynamic initializer -- can't optimize.
51 define i32 @AccessGlobDy_0_2() sanitize_address {
53 %0 = load i32* getelementptr inbounds ([10 x i32]* @GlobDy, i64 0, i64 2), align 8
55 ; CHECK-LABEL: define i32 @AccessGlobDy_0_2
56 ; CHECK: __asan_report
60 ; GlobEx is an external global -- can't optimize.
61 define i32 @AccessGlobEx_0_2() sanitize_address {
63 %0 = load i32* getelementptr inbounds ([10 x i32]* @GlobEx, i64 0, i64 2), align 8
65 ; CHECK-LABEL: define i32 @AccessGlobEx_0_2
66 ; CHECK: __asan_report
71 !llvm.asan.globals = !{!0}
72 !0 = !{[10 x i32]* @GlobDy, null, null, i1 true, i1 false}
74 ; CHECK-LABEL: define internal void @asan.module_ctor
76 ; CHECK: call void @__asan_register_globals
79 ; CHECK-LABEL: define internal void @asan.module_dtor
81 ; CHECK: call void @__asan_unregister_globals