1// RUN: %clangxx %s -o %t && %t | FileCheck %s
2// RUN: %clangxx %s -o %t -fexperimental-sanitize-metadata=covered && %t | FileCheck -check-prefix=CHECK-C %s
3// RUN: %clangxx %s -o %t -fexperimental-sanitize-metadata=atomics && %t | FileCheck -check-prefix=CHECK-A %s
4// RUN: %clangxx %s -o %t -fexperimental-sanitize-metadata=uar && %t | FileCheck -check-prefix=CHECK-U %s
5// RUN: %clangxx %s -o %t -fexperimental-sanitize-metadata=covered,atomics && %t | FileCheck -check-prefix=CHECK-CA %s
6// RUN: %clangxx %s -o %t -fexperimental-sanitize-metadata=covered,uar && %t | FileCheck -check-prefix=CHECK-CU %s
7// RUN: %clangxx %s -o %t -fexperimental-sanitize-metadata=atomics,uar && %t | FileCheck -check-prefix=CHECK-AU %s
8// RUN: %clangxx %s -o %t -fexperimental-sanitize-metadata=covered,atomics,uar && %t | FileCheck -check-prefix=CHECK-CAU %s
9// RUN: %clangxx %s -o %t -mcmodel=large -fexperimental-sanitize-metadata=covered,atomics,uar && %t | FileCheck -check-prefix=CHECK-CAU %s
10
11const int const_global = 42;
12
13__attribute__((noinline, not_tail_called)) void escape(const volatile void *p) {
14 [[maybe_unused]] static const volatile void *sink;
15 sink = p;
16}
17
18// CHECK-NOT: metadata add
19// CHECK: main
20// CHECK-NOT: metadata del
21
22// CHECK-C: empty: features=0
23// CHECK-A-NOT: empty:
24// CHECK-U-NOT: empty:
25// CHECK-CA: empty: features=0
26// CHECK-CU: empty: features=0
27// CHECK-AU-NOT: empty:
28// CHECK-CAU: empty: features=0
29void empty() {}
30
31// CHECK-C: normal: features=0
32// CHECK-A: normal: features=1
33// CHECK-U: normal: features=2
34// CHECK-CA: normal: features=1
35// CHECK-CU: normal: features=2
36// CHECK-AU: normal: features=3
37// CHECK-CAU:normal: features=3
38void normal() {
39 int x;
40 escape(p: &x);
41}
42
43// CHECK-C: with_const_global: features=0
44// CHECK-A-NOT: with_const_global:
45// CHECK-U-NOT: with_const_global:
46// CHECK-CA: with_const_global: features=0
47// CHECK-CU: with_const_global: features=0
48// CHECK-AU-NOT: with_const_global:
49// CHECK-CAU: with_const_global: features=0
50int with_const_global() { return *((const volatile int *)&const_global); }
51
52// CHECK-C: with_atomic: features=0
53// CHECK-A: with_atomic: features=1
54// CHECK-U-NOT: with_atomic:
55// CHECK-CA: with_atomic: features=1
56// CHECK-CU: with_atomic: features=0
57// CHECK-AU: with_atomic: features=1
58// CHECK-CAU: with_atomic: features=1
59int with_atomic(int *p) { return __atomic_load_n(p, __ATOMIC_RELAXED); }
60
61// CHECK-C: with_atomic_escape: features=0
62// CHECK-A: with_atomic_escape: features=1
63// CHECK-U: with_atomic_escape: features=2
64// CHECK-CA: with_atomic_escape: features=1
65// CHECK-CU: with_atomic_escape: features=2
66// CHECK-AU: with_atomic_escape: features=3
67// CHECK-CAU: with_atomic_escape: features=3
68int with_atomic_escape(int *p) {
69 escape(p: &p);
70 return __atomic_load_n(p, __ATOMIC_RELAXED);
71}
72
73// CHECK-C: with_atomic_escape_lots_of_args: features=0
74// CHECK-A: with_atomic_escape_lots_of_args: features=1
75// CHECK-U: with_atomic_escape_lots_of_args: features=6
76// CHECK-CA: with_atomic_escape_lots_of_args: features=1
77// CHECK-CU: with_atomic_escape_lots_of_args: features=6
78// CHECK-AU: with_atomic_escape_lots_of_args: features=7
79// CHECK-CAU: with_atomic_escape_lots_of_args: features=7
80long with_atomic_escape_lots_of_args(int *p, long a0, long a1, long a2, long a3,
81 long a4, long a5, long a6) {
82 escape(p: &p);
83 return a0 + a1 + a2 + a3 + a4 + a5 + a6 +
84 __atomic_load_n(p, __ATOMIC_RELAXED);
85}
86
87// CHECK-C: ellipsis: features=0
88// CHECK-A: ellipsis: features=1
89// CHECK-U-NOT: ellipsis:
90// CHECK-CA: ellipsis: features=1
91// CHECK-CU: ellipsis: features=0
92// CHECK-AU: ellipsis: features=1
93// CHECK-CAU: ellipsis: features=1
94void ellipsis(int *p, ...) {
95 escape(p: &p);
96 [[maybe_unused]] volatile int x;
97 x = 0;
98}
99
100// CHECK-C: ellipsis_with_atomic: features=0
101// CHECK-A: ellipsis_with_atomic: features=1
102// CHECK-U-NOT: ellipsis_with_atomic:
103// CHECK-CA: ellipsis_with_atomic: features=1
104// CHECK-CU: ellipsis_with_atomic: features=0
105// CHECK-AU: ellipsis_with_atomic: features=1
106// CHECK-CAU: ellipsis_with_atomic: features=1
107int ellipsis_with_atomic(int *p, ...) {
108 escape(p: &p);
109 return __atomic_load_n(p, __ATOMIC_RELAXED);
110}
111
112#define FUNCTIONS \
113 FN(empty); \
114 FN(normal); \
115 FN(with_const_global); \
116 FN(with_atomic); \
117 FN(with_atomic_escape); \
118 FN(with_atomic_escape_lots_of_args); \
119 FN(ellipsis); \
120 FN(ellipsis_with_atomic); \
121 /**/
122
123#include "common.h"
124

source code of compiler-rt/test/metadata/covered.cpp