1; RUN: opt < %s -msan-check-access-address=0 -msan-track-origins=1 -S          \
2; RUN: -passes=msan 2>&1 | FileCheck -check-prefix=CHECK                       \
3; RUN: -check-prefix=CHECK-ORIGINS1 %s
4; RUN: opt < %s -msan-check-access-address=0 -msan-track-origins=2 -S          \
5; RUN: -passes=msan 2>&1 | FileCheck -check-prefix=CHECK                       \
6; RUN: -check-prefix=CHECK-ORIGINS2 %s
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
11
12; Check origin instrumentation of stores.
13; Check that debug info for origin propagation code is set correctly.
14
15@a8 = global i8 0, align 8
16@a4 = global i8 0, align 4
17@a2 = global i8 0, align 2
18@a1 = global i8 0, align 1
19
20; 8-aligned store => 8-aligned origin store, origin address is not realigned
21define void @Store8(i8 %x) sanitize_memory {
22entry:
23  store i8 %x, i8* @a8, align 8
24  ret void
25}
26
27; CHECK-LABEL: @Store8
28; CHECK-ORIGINS1: [[ORIGIN:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
29; CHECK-ORIGINS2: [[ORIGIN0:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
30; CHECK-ORIGINS2: [[ORIGIN:%[01-9a-z]+]] = call i32 @__msan_chain_origin(i32 [[ORIGIN0]])
31; CHECK: store i32 [[ORIGIN]], {{.*}}, align 8
32; CHECK: ret void
33
34
35; 4-aligned store => 4-aligned origin store, origin address is not realigned
36define void @Store4(i8 %x) sanitize_memory {
37entry:
38  store i8 %x, i8* @a4, align 4
39  ret void
40}
41
42; CHECK-LABEL: @Store4
43; CHECK-ORIGINS1: [[ORIGIN:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
44; CHECK-ORIGINS2: [[ORIGIN0:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
45; CHECK-ORIGINS2: [[ORIGIN:%[01-9a-z]+]] = call i32 @__msan_chain_origin(i32 [[ORIGIN0]])
46; CHECK: store i32 [[ORIGIN]], {{.*}}, align 4
47; CHECK: ret void
48
49
50; 2-aligned store => 4-aligned origin store, origin address is realigned
51define void @Store2(i8 %x) sanitize_memory {
52entry:
53  store i8 %x, i8* @a2, align 2
54  ret void
55}
56
57; CHECK-LABEL: @Store2
58; CHECK-ORIGINS1: [[ORIGIN:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
59; CHECK-ORIGINS2: [[ORIGIN0:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
60; CHECK-ORIGINS2: [[ORIGIN:%[01-9a-z]+]] = call i32 @__msan_chain_origin(i32 [[ORIGIN0]])
61; CHECK: store i32 [[ORIGIN]], {{.*}}, align 4
62; CHECK: ret void
63
64
65; 1-aligned store => 4-aligned origin store, origin address is realigned
66define void @Store1(i8 %x) sanitize_memory {
67entry:
68  store i8 %x, i8* @a1, align 1
69  ret void
70}
71
72; CHECK-LABEL: @Store1
73; CHECK-ORIGINS1: [[ORIGIN:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
74; CHECK-ORIGINS2: [[ORIGIN0:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
75; CHECK-ORIGINS2: [[ORIGIN:%[01-9a-z]+]] = call i32 @__msan_chain_origin(i32 [[ORIGIN0]])
76; CHECK: store i32 [[ORIGIN]], {{.*}}, align 4
77
78; CHECK: ret void
79