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  ret void
30}
31
32define void @Func2() sanitize_address {
33entry:
34; CHECK-LABEL: Func2
35
36; CHECK-STATIC: alloca [864 x i8]
37; CHECK-DYNAMIC: alloca i8, i64 864
38
39; CHECK-NOT: alloca
40; CHECK: ret void
41  %AAA = alloca [5 x i8], align 1
42  %BBB = alloca [55 x i8], align 1
43  %CCC = alloca [555 x i8], align 1
44  ret void
45}
46
47; Check that we reorder vars according to alignment and handle large alignments.
48define void @Func3() sanitize_address {
49entry:
50; CHECK-LABEL: Func3
51
52; CHECK-STATIC: alloca [768 x i8]
53; CHECK-DYNAMIC: alloca i8, i64 768
54
55; CHECK-NOT: alloca
56; CHECK: ret void
57  %AAA = alloca [128 x i8], align 16
58  %BBB = alloca [128 x i8], align 64
59  %CCC = alloca [128 x i8], align 256
60  ret void
61}
62