1 ; RUN: opt < %s -passes=asan -asan-globals-live-support=1 -S | FileCheck %s
2 ; RUN: opt < %s -passes=asan -asan-globals-live-support=1 -asan-mapping-scale=5 -S | FileCheck %s
3 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"
4 target triple = "x86_64-unknown-linux-gnu"
5 @xxx = global i32 0, align 4
7 ; If a global is present, __asan_[un]register_globals should be called from
10 ; CHECK: @___asan_gen_module = private constant [8 x i8] c"<stdin>\00", align 1
11 ; CHECK: @llvm.used = appending global [2 x ptr] [ptr @asan.module_ctor, ptr @asan.module_dtor], section "llvm.metadata"
12 ; CHECK: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 1, ptr @asan.module_ctor, ptr @asan.module_ctor }]
13 ; CHECK: @llvm.global_dtors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 1, ptr @asan.module_dtor, ptr @asan.module_dtor }]
15 ; Test that we don't instrument global arrays with static initializer
16 ; indexed with constants in-bounds. But instrument all other cases.
18 @GlobSt = global [10 x i32] zeroinitializer, align 16 ; static initializer
19 @GlobStAlignInBounds = global [10 x i8] zeroinitializer, align 16 ; static initializer
20 @GlobDy = global [10 x i32] zeroinitializer, align 16, sanitize_address_dyninit ; dynamic initializer
21 @GlobEx = external global [10 x i32] , align 16 ; extern initializer
23 ; GlobSt is declared here, and has static initializer -- ok to optimize.
24 define i32 @AccessGlobSt_0_2() sanitize_address {
26 %0 = load i32, ptr getelementptr inbounds ([10 x i32], ptr @GlobSt, i64 0, i64 2), align 8
28 ; CHECK-LABEL: define i32 @AccessGlobSt_0_2
29 ; CHECK-NOT: __asan_report
33 ; GlobSt is accessed out of bounds -- can't optimize
34 define i32 @AccessGlobSt_0_12() sanitize_address {
36 %0 = load i32, ptr getelementptr inbounds ([10 x i32], ptr @GlobSt, i64 0, i64 12), align 8
38 ; CHECK-LABEL: define i32 @AccessGlobSt_0_12
39 ; CHECK: __asan_report
43 ; GlobSt is accessed with Gep that has non-0 first index -- can't optimize.
44 define i32 @AccessGlobSt_1_2() sanitize_address {
46 %0 = load i32, ptr getelementptr inbounds ([10 x i32], ptr @GlobSt, i64 1, i64 2), align 8
48 ; CHECK-LABEL: define i32 @AccessGlobSt_1_2
49 ; CHECK: __asan_report
53 ; GlobStAlignInBount is accessed with out of bounds index, but in bounds of allocated area (because of alignemnt)
54 define i8 @AccessGlobStAlignInBounds_0_11() sanitize_address {
56 %0 = load i8, ptr getelementptr inbounds ([10 x i8], ptr @GlobStAlignInBounds, i64 0, i64 11), align 1
58 ; CHECK-LABEL: define i8 @AccessGlobStAlignInBounds_0_11
59 ; CHECK: __asan_report
63 ; GlobStAlignInBount is accessed with in-bound index
64 define i8 @AccessGlobStAlignInBounds_0_9() sanitize_address {
66 %0 = load i8, ptr getelementptr inbounds ([10 x i8], ptr @GlobStAlignInBounds, i64 0, i64 9), align 1
68 ; CHECK-LABEL: define i8 @AccessGlobStAlignInBounds_0_9
69 ; CHECK-NOT: __asan_report
73 ; GlobDy is declared with dynamic initializer -- can't optimize.
74 define i32 @AccessGlobDy_0_2() sanitize_address {
76 %0 = load i32, ptr getelementptr inbounds ([10 x i32], ptr @GlobDy, i64 0, i64 2), align 8
78 ; CHECK-LABEL: define i32 @AccessGlobDy_0_2
79 ; CHECK: __asan_report
83 ; GlobEx is an external global -- can't optimize.
84 define i32 @AccessGlobEx_0_2() sanitize_address {
86 %0 = load i32, ptr getelementptr inbounds ([10 x i32], ptr @GlobEx, i64 0, i64 2), align 8
88 ; CHECK-LABEL: define i32 @AccessGlobEx_0_2
89 ; CHECK: __asan_report
93 ; CHECK-LABEL: define internal void @asan.module_ctor
95 ; CHECK: call void @__asan_register_elf_globals
98 ; CHECK-LABEL: define internal void @asan.module_dtor
100 ; CHECK: call void @__asan_unregister_elf_globals