1 ; RUN: opt < %s -asan -asan-module -asan-globals-live-support=1 -S | FileCheck %s
2 ; RUN: opt < %s -asan -asan-module -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_ = private constant [8 x i8] c"<stdin>\00", align 1
11 ; CHECK: llvm.global_ctors
12 ; CHECK: llvm.global_dtors
14 ; Test that we don't instrument global arrays with static initializer
15 ; indexed with constants in-bounds. But instrument all other cases.
17 @GlobSt = global [10 x i32] zeroinitializer, align 16 ; static initializer
18 @GlobDy = global [10 x i32] zeroinitializer, align 16 ; dynamic initializer
19 @GlobEx = external global [10 x i32] , align 16 ; extern initializer
21 ; GlobSt is declared here, and has static initializer -- ok to optimize.
22 define i32 @AccessGlobSt_0_2() sanitize_address {
24 %0 = load i32, i32* getelementptr inbounds ([10 x i32], [10 x i32]* @GlobSt, i64 0, i64 2), align 8
26 ; CHECK-LABEL: define i32 @AccessGlobSt_0_2
27 ; CHECK-NOT: __asan_report
31 ; GlobSt is accessed out of bounds -- can't optimize
32 define i32 @AccessGlobSt_0_12() sanitize_address {
34 %0 = load i32, i32* getelementptr inbounds ([10 x i32], [10 x i32]* @GlobSt, i64 0, i64 12), align 8
36 ; CHECK-LABEL: define i32 @AccessGlobSt_0_12
37 ; CHECK: __asan_report
41 ; GlobSt is accessed with Gep that has non-0 first index -- can't optimize.
42 define i32 @AccessGlobSt_1_2() sanitize_address {
44 %0 = load i32, i32* getelementptr inbounds ([10 x i32], [10 x i32]* @GlobSt, i64 1, i64 2), align 8
46 ; CHECK-LABEL: define i32 @AccessGlobSt_1_2
47 ; CHECK: __asan_report
51 ; GlobDy is declared with dynamic initializer -- can't optimize.
52 define i32 @AccessGlobDy_0_2() sanitize_address {
54 %0 = load i32, i32* getelementptr inbounds ([10 x i32], [10 x i32]* @GlobDy, i64 0, i64 2), align 8
56 ; CHECK-LABEL: define i32 @AccessGlobDy_0_2
57 ; CHECK: __asan_report
61 ; GlobEx is an external global -- can't optimize.
62 define i32 @AccessGlobEx_0_2() sanitize_address {
64 %0 = load i32, i32* getelementptr inbounds ([10 x i32], [10 x i32]* @GlobEx, i64 0, i64 2), align 8
66 ; CHECK-LABEL: define i32 @AccessGlobEx_0_2
67 ; CHECK: __asan_report
72 !llvm.asan.globals = !{!0}
73 !0 = !{[10 x i32]* @GlobDy, null, null, i1 true, i1 false}
75 ; CHECK-LABEL: define internal void @asan.module_ctor
77 ; CHECK: call void @__asan_register_elf_globals
80 ; CHECK-LABEL: define internal void @asan.module_dtor
82 ; CHECK: call void @__asan_unregister_elf_globals