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
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(i8*)
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
17 define void @Func1() sanitize_address {
21 ; CHECK-STATIC: alloca [192 x i8]
22 ; CHECK-DYNAMIC: alloca i8, i64 192
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
38 define void @Func2() sanitize_address {
42 ; CHECK-STATIC: alloca [864 x i8]
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 %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
59 ; Check that we reorder vars according to alignment and handle large alignments.
60 define void @Func3() sanitize_address {
64 ; CHECK-STATIC: alloca [768 x i8]
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 %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