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f768061c | 1 | /* RTL hash functions. |
cbe34bb5 | 2 | Copyright (C) 1987-2017 Free Software Foundation, Inc. |
f768061c AK |
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 | #include "config.h" | |
21 | #include "system.h" | |
22 | #include "coretypes.h" | |
23 | #include "tm.h" | |
f768061c AK |
24 | #include "rtl.h" |
25 | #include "rtlhash.h" | |
26 | ||
27 | namespace inchash | |
28 | { | |
29 | ||
30 | /* Iteratively hash rtx X into HSTATE. */ | |
31 | ||
32 | void | |
33 | add_rtx (const_rtx x, hash &hstate) | |
34 | { | |
35 | enum rtx_code code; | |
ef4bddc2 | 36 | machine_mode mode; |
f768061c AK |
37 | int i, j; |
38 | const char *fmt; | |
39 | ||
40 | if (x == NULL_RTX) | |
41 | return; | |
42 | code = GET_CODE (x); | |
43 | hstate.add_object (code); | |
44 | mode = GET_MODE (x); | |
45 | hstate.add_object (mode); | |
46 | switch (code) | |
47 | { | |
48 | case REG: | |
49 | hstate.add_int (REGNO (x)); | |
50 | return; | |
51 | case CONST_INT: | |
52 | hstate.add_object (INTVAL (x)); | |
53 | return; | |
54 | case CONST_WIDE_INT: | |
55 | for (i = 0; i < CONST_WIDE_INT_NUNITS (x); i++) | |
56 | hstate.add_object (CONST_WIDE_INT_ELT (x, i)); | |
57 | return; | |
58 | case SYMBOL_REF: | |
59 | if (XSTR (x, 0)) | |
60 | hstate.add (XSTR (x, 0), strlen (XSTR (x, 0)) + 1); | |
61 | return; | |
62 | case LABEL_REF: | |
63 | case DEBUG_EXPR: | |
64 | case VALUE: | |
65 | case SCRATCH: | |
66 | case CONST_DOUBLE: | |
67 | case CONST_FIXED: | |
68 | case DEBUG_IMPLICIT_PTR: | |
69 | case DEBUG_PARAMETER_REF: | |
70 | return; | |
71 | default: | |
72 | break; | |
73 | } | |
74 | ||
75 | fmt = GET_RTX_FORMAT (code); | |
76 | for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--) | |
77 | switch (fmt[i]) | |
78 | { | |
79 | case 'w': | |
80 | hstate.add_object (XWINT (x, i)); | |
81 | break; | |
82 | case 'n': | |
83 | case 'i': | |
84 | hstate.add_object (XINT (x, i)); | |
85 | break; | |
86 | case 'V': | |
87 | case 'E': | |
88 | j = XVECLEN (x, i); | |
89 | hstate.add_int (j); | |
90 | for (j = 0; j < XVECLEN (x, i); j++) | |
91 | inchash::add_rtx (XVECEXP (x, i, j), hstate); | |
92 | break; | |
93 | case 'e': | |
94 | inchash::add_rtx (XEXP (x, i), hstate); | |
95 | break; | |
96 | case 'S': | |
97 | case 's': | |
98 | if (XSTR (x, i)) | |
99 | hstate.add (XSTR (x, 0), strlen (XSTR (x, 0)) + 1); | |
100 | break; | |
101 | default: | |
102 | break; | |
103 | } | |
104 | } | |
105 | ||
106 | } |