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e1a79915 | 1 | /* Print RTL for GNU C Compiler. |
a8efe40d | 2 | Copyright (C) 1987, 1991 Free Software Foundation, Inc. |
e1a79915 RS |
3 | |
4 | This file is part of GNU CC. | |
5 | ||
6 | GNU CC is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU CC is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU CC; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | ||
21 | #include "config.h" | |
22 | #include <ctype.h> | |
23 | #include <stdio.h> | |
24 | #include "rtl.h" | |
25 | ||
26 | ||
27 | static FILE *outfile; | |
28 | ||
29 | char spaces[] = " "; | |
30 | ||
31 | static int sawclose = 0; | |
32 | ||
33 | /* Names for patterns. Non-zero only when linked with insn-output.c. */ | |
34 | ||
35 | extern char **insn_name_ptr; | |
36 | ||
37 | /* Print IN_RTX onto OUTFILE. This is the recursive part of printing. */ | |
38 | ||
39 | static void | |
40 | print_rtx (in_rtx) | |
41 | register rtx in_rtx; | |
42 | { | |
43 | static int indent; | |
44 | register int i, j; | |
45 | register char *format_ptr; | |
46 | register int is_insn; | |
47 | ||
48 | if (sawclose) | |
49 | { | |
50 | fprintf (outfile, "\n%s", | |
51 | (spaces + (sizeof spaces - indent * 2))); | |
52 | sawclose = 0; | |
53 | } | |
54 | ||
55 | if (in_rtx == 0) | |
56 | { | |
57 | fprintf (outfile, "(nil)"); | |
58 | sawclose = 1; | |
59 | return; | |
60 | } | |
61 | ||
62 | /* print name of expression code */ | |
63 | fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx))); | |
64 | ||
65 | if (in_rtx->in_struct) | |
66 | fprintf (outfile, "/s"); | |
67 | ||
68 | if (in_rtx->volatil) | |
69 | fprintf (outfile, "/v"); | |
70 | ||
71 | if (in_rtx->unchanging) | |
72 | fprintf (outfile, "/u"); | |
73 | ||
74 | if (in_rtx->integrated) | |
75 | fprintf (outfile, "/i"); | |
76 | ||
77 | if (GET_MODE (in_rtx) != VOIDmode) | |
78 | { | |
79 | /* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */ | |
80 | if (GET_CODE (in_rtx) == EXPR_LIST || GET_CODE (in_rtx) == INSN_LIST) | |
81 | fprintf (outfile, ":%s", GET_REG_NOTE_NAME (GET_MODE (in_rtx))); | |
82 | else | |
83 | fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx))); | |
84 | } | |
85 | ||
86 | is_insn = (GET_RTX_CLASS (GET_CODE (in_rtx)) == 'i'); | |
87 | format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx)); | |
88 | ||
89 | for (i = 0; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++) | |
90 | switch (*format_ptr++) | |
91 | { | |
92 | case 'S': | |
93 | case 's': | |
94 | if (XSTR (in_rtx, i) == 0) | |
95 | fprintf (outfile, " \"\""); | |
96 | else | |
97 | fprintf (outfile, " (\"%s\")", XSTR (in_rtx, i)); | |
98 | sawclose = 1; | |
99 | break; | |
100 | ||
101 | /* 0 indicates a field for internal use that should not be printed. */ | |
102 | case '0': | |
103 | break; | |
104 | ||
105 | case 'e': | |
106 | indent += 2; | |
107 | if (!sawclose) | |
108 | fprintf (outfile, " "); | |
109 | print_rtx (XEXP (in_rtx, i)); | |
110 | indent -= 2; | |
111 | break; | |
112 | ||
113 | case 'E': | |
114 | case 'V': | |
115 | indent += 2; | |
116 | if (sawclose) | |
117 | { | |
118 | fprintf (outfile, "\n%s", | |
119 | (spaces + (sizeof spaces - indent * 2))); | |
120 | sawclose = 0; | |
121 | } | |
122 | fprintf (outfile, "[ "); | |
123 | if (NULL != XVEC (in_rtx, i)) | |
124 | { | |
125 | indent += 2; | |
126 | if (XVECLEN (in_rtx, i)) | |
127 | sawclose = 1; | |
128 | ||
129 | for (j = 0; j < XVECLEN (in_rtx, i); j++) | |
130 | print_rtx (XVECEXP (in_rtx, i, j)); | |
131 | ||
132 | indent -= 2; | |
133 | } | |
134 | if (sawclose) | |
135 | fprintf (outfile, "\n%s", | |
136 | (spaces + (sizeof spaces - indent * 2))); | |
137 | ||
138 | fprintf (outfile, "] "); | |
139 | sawclose = 1; | |
140 | indent -= 2; | |
141 | break; | |
142 | ||
143 | case 'i': | |
144 | fprintf (outfile, " %d", XINT (in_rtx, i)); | |
145 | if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i) | |
146 | && insn_name_ptr | |
147 | && XINT (in_rtx, i) >= 0) | |
148 | fprintf (outfile, " {%s}", insn_name_ptr[XINT (in_rtx, i)]); | |
149 | sawclose = 0; | |
150 | break; | |
151 | ||
152 | /* Print NOTE_INSN names rather than integer codes. */ | |
153 | ||
154 | case 'n': | |
155 | if (XINT (in_rtx, i) <= 0) | |
156 | fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i))); | |
157 | else | |
158 | fprintf (outfile, " %d", XINT (in_rtx, i)); | |
159 | sawclose = 0; | |
160 | break; | |
161 | ||
162 | case 'u': | |
163 | if (XEXP (in_rtx, i) != NULL) | |
d64be5ec | 164 | fprintf (outfile, " %d", INSN_UID (XEXP (in_rtx, i))); |
e1a79915 | 165 | else |
d64be5ec CH |
166 | fprintf (outfile, " 0"); |
167 | sawclose = 0; | |
168 | break; | |
169 | ||
170 | case '*': | |
171 | fprintf (outfile, " Unknown"); | |
e1a79915 RS |
172 | sawclose = 0; |
173 | break; | |
174 | ||
175 | default: | |
176 | fprintf (stderr, | |
177 | "switch format wrong in rtl.print_rtx(). format was: %c.\n", | |
178 | format_ptr[-1]); | |
179 | abort (); | |
180 | } | |
181 | ||
182 | fprintf (outfile, ")"); | |
183 | sawclose = 1; | |
184 | } | |
185 | ||
186 | /* Call this function from the debugger to see what X looks like. */ | |
187 | ||
188 | void | |
189 | debug_rtx (x) | |
190 | rtx x; | |
191 | { | |
192 | outfile = stderr; | |
193 | print_rtx (x); | |
194 | fprintf (stderr, "\n"); | |
195 | } | |
196 | ||
197 | /* External entry point for printing a chain of insns | |
198 | starting with RTX_FIRST onto file OUTF. | |
199 | A blank line separates insns. | |
200 | ||
201 | If RTX_FIRST is not an insn, then it alone is printed, with no newline. */ | |
202 | ||
203 | void | |
204 | print_rtl (outf, rtx_first) | |
205 | FILE *outf; | |
206 | rtx rtx_first; | |
207 | { | |
208 | register rtx tmp_rtx; | |
209 | ||
210 | outfile = outf; | |
211 | sawclose = 0; | |
212 | ||
213 | if (rtx_first == 0) | |
214 | fprintf (outf, "(nil)\n"); | |
215 | else | |
216 | switch (GET_CODE (rtx_first)) | |
217 | { | |
218 | case INSN: | |
219 | case JUMP_INSN: | |
220 | case CALL_INSN: | |
221 | case NOTE: | |
222 | case CODE_LABEL: | |
223 | case BARRIER: | |
224 | for (tmp_rtx = rtx_first; NULL != tmp_rtx; tmp_rtx = NEXT_INSN (tmp_rtx)) | |
225 | { | |
226 | print_rtx (tmp_rtx); | |
227 | fprintf (outfile, "\n"); | |
228 | } | |
229 | break; | |
230 | ||
231 | default: | |
232 | print_rtx (rtx_first); | |
233 | } | |
234 | } |