1 ; Test the ASan's stack layout.
2 ; More tests in tests/Transforms/Utils/ASanStackFrameLayoutTest.cpp
3 ; RUN: opt < %s -passes=asan -asan-stack-dynamic-alloca=0 -asan-use-after-scope -S \
4 ; RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-STATIC
5 ; RUN: opt < %s -passes=asan -asan-stack-dynamic-alloca=1 -asan-use-after-scope -S \
6 ; RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-DYNAMIC
8 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"
9 target triple = "x86_64-unknown-linux-gnu"
11 declare void @Use(ptr)
12 declare void @llvm.lifetime.start.p0(i64, ptr nocapture) nounwind
13 declare void @llvm.lifetime.end.p0(i64, ptr nocapture) nounwind
15 ; CHECK: private unnamed_addr constant{{.*}}3 32 10 3 XXX 64 20 3 YYY 128 30 3 ZZZ\0
16 ; CHECK: private unnamed_addr constant{{.*}}3 32 5 3 AAA 64 55 3 BBB 160 555 3 CCC\0
17 ; CHECK: private unnamed_addr constant{{.*}}3 256 128 3 CCC 448 128 3 BBB 608 128 3 AAA\0
18 ; CHECK: private unnamed_addr constant{{.*}}2 32 4 3 AAA 48 4 5 BBB:7\0
20 define void @Func1() sanitize_address {
24 ; CHECK-STATIC: alloca [192 x i8]
25 ; CHECK-STATIC: %asan_local_stack_base = alloca i64
26 ; CHECK-DYNAMIC: alloca i8, i64 192
30 %XXX = alloca [10 x i8], align 1
31 %YYY = alloca [20 x i8], align 1
32 %ZZZ = alloca [30 x i8], align 1
33 store volatile i8 0, ptr %XXX
34 store volatile i8 0, ptr %YYY
35 store volatile i8 0, ptr %ZZZ
39 define void @Func2() sanitize_address {
43 ; CHECK-STATIC: alloca [864 x i8]
44 ; CHECK-STATIC: %asan_local_stack_base = alloca i64
45 ; CHECK-DYNAMIC: alloca i8, i64 864
49 %AAA = alloca [5 x i8], align 1
50 %BBB = alloca [55 x i8], align 1
51 %CCC = alloca [555 x i8], align 1
52 store volatile i8 0, ptr %AAA
53 store volatile i8 0, ptr %BBB
54 store volatile i8 0, ptr %CCC
58 ; Check that we reorder vars according to alignment and handle large alignments.
59 define void @Func3() sanitize_address {
63 ; CHECK-STATIC: alloca [768 x i8]
64 ; CHECK-STATIC: %asan_local_stack_base = alloca i64
65 ; CHECK-DYNAMIC: alloca i8, i64 768
69 %AAA = alloca [128 x i8], align 16
70 %BBB = alloca [128 x i8], align 64
71 %CCC = alloca [128 x i8], align 256
72 store volatile i8 0, ptr %AAA
73 store volatile i8 0, ptr %BBB
74 store volatile i8 0, ptr %CCC
78 ; Check that line numbers are attached to variable names if variable
79 ; in the same file as a function.
80 define void @Func5() sanitize_address #0 !dbg !11 {
81 %AAA = alloca i32, align 4 ; File is not the same as !11
82 %BBB = alloca i32, align 4 ; File is the same as !11
83 call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %BBB), !dbg !12
84 store volatile i32 5, ptr %BBB, align 4
85 call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %AAA), !dbg !14
86 store volatile i32 3, ptr %AAA, align 4
87 call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %AAA), !dbg !17
88 call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %BBB), !dbg !18
93 !llvm.module.flags = !{!3, !4}
94 !3 = !{i32 2, !"Dwarf Version", i32 4}
95 !4 = !{i32 2, !"Debug Info Version", i32 3}
97 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1)
98 !1 = !DIFile(filename: "../file1.c", directory: "/")
99 !11 = distinct !DISubprogram(name: "Func5", scope: !1, file: !1, line: 6, unit: !0)
100 !12 = !DILocation(line: 7, column: 3, scope: !11)
101 !18 = !DILocation(line: 10, column: 1, scope: !11)
103 !21 = !DIFile(filename: "../file2.c", directory: "/")
104 !6 = distinct !DISubprogram(name: "Func4", scope: !1, file: !21, line: 2, unit: !0)
105 !15 = distinct !DILocation(line: 8, column: 3, scope: !11)
106 !14 = !DILocation(line: 3, column: 3, scope: !6, inlinedAt: !15)
107 !17 = !DILocation(line: 4, column: 1, scope: !6, inlinedAt: !15)