1; Test the ASan's stack layout.
2; More tests in tests/Transforms/Utils/ASanStackFrameLayoutTest.cpp
3; RUN: opt < %s -asan -asan-module -asan-stack-dynamic-alloca=0 -S \
4; RUN:     | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-STATIC
5; RUN: opt < %s -asan -asan-module -asan-stack-dynamic-alloca=1 -S \
6; RUN:     | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-DYNAMIC
7
8target 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"
9target triple = "x86_64-unknown-linux-gnu"
10
11declare void @Use(i8*)
12
13; CHECK: private unnamed_addr constant{{.*}}3 32 10 3 XXX 64 20 3 YYY 128 30 3 ZZZ
14; CHECK: private unnamed_addr constant{{.*}}3 32 5 3 AAA 64 55 3 BBB 160 555 3 CCC
15; CHECK: private unnamed_addr constant{{.*}}3 256 128 3 CCC 448 128 3 BBB 608 128 3 AAA
16
17define void @Func1() sanitize_address {
18entry:
19; CHECK-LABEL: Func1
20
21; CHECK-STATIC: alloca [192 x i8]
22; CHECK-DYNAMIC: alloca i8, i64 192
23
24; CHECK-NOT: alloca
25; CHECK: ret void
26  %XXX = alloca [10 x i8], align 1
27  %YYY = alloca [20 x i8], align 1
28  %ZZZ = alloca [30 x i8], align 1
29  %arr1.ptr = bitcast [10 x i8]* %XXX to i8*
30  store volatile i8 0, i8* %arr1.ptr
31  %arr2.ptr = bitcast [20 x i8]* %YYY to i8*
32  store volatile i8 0, i8* %arr2.ptr
33  %arr3.ptr = bitcast [30 x i8]* %ZZZ to i8*
34  store volatile i8 0, i8* %arr3.ptr
35  ret void
36}
37
38define void @Func2() sanitize_address {
39entry:
40; CHECK-LABEL: Func2
41
42; CHECK-STATIC: alloca [864 x i8]
43; CHECK-DYNAMIC: alloca i8, i64 864
44
45; CHECK-NOT: alloca
46; CHECK: ret void
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  %arr1.ptr = bitcast [5 x i8]* %AAA to i8*
51  store volatile i8 0, i8* %arr1.ptr
52  %arr2.ptr = bitcast [55 x i8]* %BBB to i8*
53  store volatile i8 0, i8* %arr2.ptr
54  %arr3.ptr = bitcast [555 x i8]* %CCC to i8*
55  store volatile i8 0, i8* %arr3.ptr
56  ret void
57}
58
59; Check that we reorder vars according to alignment and handle large alignments.
60define void @Func3() sanitize_address {
61entry:
62; CHECK-LABEL: Func3
63
64; CHECK-STATIC: alloca [768 x i8]
65; CHECK-DYNAMIC: alloca i8, i64 768
66
67; CHECK-NOT: alloca
68; CHECK: ret void
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  %arr1.ptr = bitcast [128 x i8]* %AAA to i8*
73  store volatile i8 0, i8* %arr1.ptr
74  %arr2.ptr = bitcast [128 x i8]* %BBB to i8*
75  store volatile i8 0, i8* %arr2.ptr
76  %arr3.ptr = bitcast [128 x i8]* %CCC to i8*
77  store volatile i8 0, i8* %arr3.ptr
78  ret void
79}
80