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: llvm.global_dtors
12 ; Test that we don't instrument global arrays with static initializer
13 ; indexed with constants in-bounds. But instrument all other cases.
15 @GlobSt = global [10 x i32] zeroinitializer, align 16 ; static initializer
16 @GlobDy = global [10 x i32] zeroinitializer, align 16 ; dynamic initializer
17 @GlobEx = external global [10 x i32] , align 16 ; extern initializer
19 ; GlobSt is declared here, and has static initializer -- ok to optimize.
20 define i32 @AccessGlobSt_0_2() sanitize_address {
22 %0 = load i32* getelementptr inbounds ([10 x i32]* @GlobSt, i64 0, i64 2), align 8
24 ; CHECK-LABEL: define i32 @AccessGlobSt_0_2
25 ; CHECK-NOT: __asan_report
29 ; GlobSt is accessed out of bounds -- can't optimize
30 define i32 @AccessGlobSt_0_12() sanitize_address {
32 %0 = load i32* getelementptr inbounds ([10 x i32]* @GlobSt, i64 0, i64 12), align 8
34 ; CHECK-LABEL: define i32 @AccessGlobSt_0_12
35 ; CHECK: __asan_report
39 ; GlobSt is accessed with Gep that has non-0 first index -- can't optimize.
40 define i32 @AccessGlobSt_1_2() sanitize_address {
42 %0 = load i32* getelementptr inbounds ([10 x i32]* @GlobSt, i64 1, i64 2), align 8
44 ; CHECK-LABEL: define i32 @AccessGlobSt_1_2
45 ; CHECK: __asan_report
49 ; GlobDy is declared with dynamic initializer -- can't optimize.
50 define i32 @AccessGlobDy_0_2() sanitize_address {
52 %0 = load i32* getelementptr inbounds ([10 x i32]* @GlobDy, i64 0, i64 2), align 8
54 ; CHECK-LABEL: define i32 @AccessGlobDy_0_2
55 ; CHECK: __asan_report
59 ; GlobEx is an external global -- can't optimize.
60 define i32 @AccessGlobEx_0_2() sanitize_address {
62 %0 = load i32* getelementptr inbounds ([10 x i32]* @GlobEx, i64 0, i64 2), align 8
64 ; CHECK-LABEL: define i32 @AccessGlobEx_0_2
65 ; CHECK: __asan_report
70 !llvm.asan.dynamically_initialized_globals = !{!0}
71 !0 = metadata !{[10 x i32]* @GlobDy}
73 ; CHECK-LABEL: define internal void @asan.module_ctor
75 ; CHECK: call void @__asan_register_globals
78 ; CHECK-LABEL: define internal void @asan.module_dtor
80 ; CHECK: call void @__asan_unregister_globals