1 ; Test the ASan's stack layout.
2 ; More tests in tests/Transforms/Utils/ASanStackFrameLayoutTest.cpp
3 ; RUN: opt < %s -passes=asan -asan-use-stack-safety=0 -asan-stack-dynamic-alloca=0 -asan-use-after-scope -S | FileCheck %s --check-prefixes=CHECK,CHECK-STATIC
4 ; RUN: opt < %s -passes=asan -asan-use-stack-safety=0 -asan-stack-dynamic-alloca=1 -asan-use-after-scope -S | FileCheck %s --check-prefixes=CHECK,CHECK-DYNAMIC
6 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-S128"
7 target triple = "x86_64-unknown-linux-gnu"
10 declare void @llvm.lifetime.start.p0(i64, ptr nocapture) nounwind
11 declare void @llvm.lifetime.end.p0(i64, ptr nocapture) nounwind
13 ; CHECK: private unnamed_addr constant{{.*}}3 32 10 3 XXX 64 20 3 YYY 128 30 3 ZZZ\0
14 ; CHECK: private unnamed_addr constant{{.*}}3 32 5 3 AAA 64 55 3 BBB 160 555 3 CCC\0
15 ; CHECK: private unnamed_addr constant{{.*}}3 256 128 3 CCC 448 128 3 BBB 608 128 3 AAA\0
16 ; CHECK: private unnamed_addr constant{{.*}}2 32 4 3 AAA 48 4 5 BBB:7\0
18 define void @Func1() sanitize_address {
22 ; CHECK-STATIC: alloca [192 x i8]
23 ; CHECK-STATIC: %asan_local_stack_base = alloca i64
24 ; CHECK-DYNAMIC: alloca i8, i64 192
28 %XXX = alloca [10 x i8], align 1
29 %YYY = alloca [20 x i8], align 1
30 %ZZZ = alloca [30 x i8], align 1
31 store volatile i8 0, ptr %XXX
32 store volatile i8 0, ptr %YYY
33 store volatile i8 0, ptr %ZZZ
37 define void @Func2() sanitize_address {
41 ; CHECK-STATIC: alloca [864 x i8]
42 ; CHECK-STATIC: %asan_local_stack_base = alloca i64
43 ; CHECK-DYNAMIC: alloca i8, i64 864
47 %AAA = alloca [5 x i8], align 1
48 %BBB = alloca [55 x i8], align 1
49 %CCC = alloca [555 x i8], align 1
50 store volatile i8 0, ptr %AAA
51 store volatile i8 0, ptr %BBB
52 store volatile i8 0, ptr %CCC
56 ; Check that we reorder vars according to alignment and handle large alignments.
57 define void @Func3() sanitize_address {
61 ; CHECK-STATIC: alloca [768 x i8]
62 ; CHECK-STATIC: %asan_local_stack_base = alloca i64
63 ; CHECK-DYNAMIC: alloca i8, i64 768
67 %AAA = alloca [128 x i8], align 16
68 %BBB = alloca [128 x i8], align 64
69 %CCC = alloca [128 x i8], align 256
70 store volatile i8 0, ptr %AAA
71 store volatile i8 0, ptr %BBB
72 store volatile i8 0, ptr %CCC
76 ; Check that line numbers are attached to variable names if variable
77 ; in the same file as a function.
78 define void @Func5() sanitize_address #0 !dbg !11 {
79 %AAA = alloca i32, align 4 ; File is not the same as !11
80 %BBB = alloca i32, align 4 ; File is the same as !11
81 call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %BBB), !dbg !12
82 store volatile i32 5, ptr %BBB, align 4
83 call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %AAA), !dbg !14
84 store volatile i32 3, ptr %AAA, align 4
85 call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %AAA), !dbg !17
86 call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %BBB), !dbg !18
91 !llvm.module.flags = !{!3, !4}
92 !3 = !{i32 2, !"Dwarf Version", i32 4}
93 !4 = !{i32 2, !"Debug Info Version", i32 3}
95 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1)
96 !1 = !DIFile(filename: "../file1.c", directory: "/")
97 !11 = distinct !DISubprogram(name: "Func5", scope: !1, file: !1, line: 6, unit: !0)
98 !12 = !DILocation(line: 7, column: 3, scope: !11)
99 !18 = !DILocation(line: 10, column: 1, scope: !11)
101 !21 = !DIFile(filename: "../file2.c", directory: "/")
102 !6 = distinct !DISubprogram(name: "Func4", scope: !1, file: !21, line: 2, unit: !0)
103 !15 = distinct !DILocation(line: 8, column: 3, scope: !11)
104 !14 = !DILocation(line: 3, column: 3, scope: !6, inlinedAt: !15)
105 !17 = !DILocation(line: 4, column: 1, scope: !6, inlinedAt: !15)