analyzer: fix feasibility false +ve on jumps through function ptrs [PR107582]
[platform/upstream/gcc.git] / gcc / insn-addr.h
1 /* Macros to support INSN_ADDRESSES
2    Copyright (C) 2000-2022 Free Software Foundation, Inc.
3
4 This file is part of GCC.
5
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
9 version.
10
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3.  If not see
18 <http://www.gnu.org/licenses/>.  */
19
20 #ifndef GCC_INSN_ADDR_H
21 #define GCC_INSN_ADDR_H
22
23 extern vec<int> insn_addresses_;
24 extern int insn_current_address;
25
26 #define INSN_ADDRESSES(id) (insn_addresses_[id])
27 #define INSN_ADDRESSES_ALLOC(size)                      \
28   do                                                    \
29     {                                                   \
30       insn_addresses_.create (size);                    \
31       insn_addresses_.safe_grow_cleared (size, true);   \
32       memset (insn_addresses_.address (),               \
33               0, sizeof (int) * size);                  \
34     }                                                   \
35   while (0)
36 #define INSN_ADDRESSES_FREE() (insn_addresses_.release ())
37 #define INSN_ADDRESSES_SET_P() (insn_addresses_.exists ())
38 #define INSN_ADDRESSES_SIZE() (insn_addresses_.length ())
39
40 static inline void
41 insn_addresses_new (rtx_insn *insn, int insn_addr)
42 {
43   unsigned insn_uid = INSN_UID ((insn));
44
45   if (INSN_ADDRESSES_SET_P ())
46     {
47       size_t size = INSN_ADDRESSES_SIZE ();
48       if (size <= insn_uid)
49         {
50           int *p;
51           insn_addresses_.safe_grow (insn_uid + 1, true);
52           p = insn_addresses_.address ();
53           memset (&p[size],
54                   0, sizeof (int) * (insn_uid + 1 - size));
55         }
56       INSN_ADDRESSES (insn_uid) = insn_addr;
57     }
58 }
59
60 #define INSN_ADDRESSES_NEW(insn, addr)          \
61   (insn_addresses_new (insn, addr))
62
63 #endif /* ! GCC_INSN_ADDR_H */