1/* Generate code from machine description to emit insns as rtl.
2 Copyright (C) 1987, 1988, 1991, 1994, 1995, 1997, 1998, 1999, 2000, 2001
3 Free Software Foundation, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 2, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING. If not, write to the Free
19Software Foundation, 59 Temple Place - Suite 330, Boston, MA
2002111-1307, USA. */
21
22
23#include "hconfig.h"
24#include "system.h"
25#include "rtl.h"
26#include "errors.h"
27#include "gensupport.h"
28
29
30static int max_opno;
31static int max_dup_opno;
32static int max_scratch_opno;
33static int register_constraints;
34static int insn_code_number;
35static int insn_index_number;
36
37/* Data structure for recording the patterns of insns that have CLOBBERs.
38 We use this to output a function that adds these CLOBBERs to a
39 previously-allocated PARALLEL expression. */
40
41struct clobber_pat
42{
43 struct clobber_ent *insns;
44 rtx pattern;
45 int first_clobber;
46 struct clobber_pat *next;
47 int has_hard_reg;
48} *clobber_list;
49
50/* Records one insn that uses the clobber list. */
51
52struct clobber_ent
53{
54 int code_number; /* Counts only insns. */
55 struct clobber_ent *next;
56};
57
58static void max_operand_1 PARAMS ((rtx));
59static int max_operand_vec PARAMS ((rtx, int));
60static void print_code PARAMS ((RTX_CODE));
61static void gen_exp PARAMS ((rtx, enum rtx_code, char *));
| 1/* Generate code from machine description to emit insns as rtl.
2 Copyright (C) 1987, 1988, 1991, 1994, 1995, 1997, 1998, 1999, 2000, 2001
3 Free Software Foundation, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 2, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING. If not, write to the Free
19Software Foundation, 59 Temple Place - Suite 330, Boston, MA
2002111-1307, USA. */
21
22
23#include "hconfig.h"
24#include "system.h"
25#include "rtl.h"
26#include "errors.h"
27#include "gensupport.h"
28
29
30static int max_opno;
31static int max_dup_opno;
32static int max_scratch_opno;
33static int register_constraints;
34static int insn_code_number;
35static int insn_index_number;
36
37/* Data structure for recording the patterns of insns that have CLOBBERs.
38 We use this to output a function that adds these CLOBBERs to a
39 previously-allocated PARALLEL expression. */
40
41struct clobber_pat
42{
43 struct clobber_ent *insns;
44 rtx pattern;
45 int first_clobber;
46 struct clobber_pat *next;
47 int has_hard_reg;
48} *clobber_list;
49
50/* Records one insn that uses the clobber list. */
51
52struct clobber_ent
53{
54 int code_number; /* Counts only insns. */
55 struct clobber_ent *next;
56};
57
58static void max_operand_1 PARAMS ((rtx));
59static int max_operand_vec PARAMS ((rtx, int));
60static void print_code PARAMS ((RTX_CODE));
61static void gen_exp PARAMS ((rtx, enum rtx_code, char *));
|
62static void gen_insn PARAMS ((rtx));
| 62static void gen_insn PARAMS ((rtx, int));
|
63static void gen_expand PARAMS ((rtx));
64static void gen_split PARAMS ((rtx));
65static void output_add_clobbers PARAMS ((void));
66static void output_added_clobbers_hard_reg_p PARAMS ((void));
67static void gen_rtx_scratch PARAMS ((rtx, enum rtx_code));
68static void output_peephole2_scratches PARAMS ((rtx));
69
70
71static void
72max_operand_1 (x)
73 rtx x;
74{
75 RTX_CODE code;
76 int i;
77 int len;
78 const char *fmt;
79
80 if (x == 0)
81 return;
82
83 code = GET_CODE (x);
84
85 if (code == MATCH_OPERAND && XSTR (x, 2) != 0 && *XSTR (x, 2) != '\0')
86 register_constraints = 1;
87 if (code == MATCH_SCRATCH && XSTR (x, 1) != 0 && *XSTR (x, 1) != '\0')
88 register_constraints = 1;
89 if (code == MATCH_OPERAND || code == MATCH_OPERATOR
90 || code == MATCH_PARALLEL)
91 max_opno = MAX (max_opno, XINT (x, 0));
92 if (code == MATCH_DUP || code == MATCH_OP_DUP || code == MATCH_PAR_DUP)
93 max_dup_opno = MAX (max_dup_opno, XINT (x, 0));
94 if (code == MATCH_SCRATCH)
95 max_scratch_opno = MAX (max_scratch_opno, XINT (x, 0));
96
97 fmt = GET_RTX_FORMAT (code);
98 len = GET_RTX_LENGTH (code);
99 for (i = 0; i < len; i++)
100 {
101 if (fmt[i] == 'e' || fmt[i] == 'u')
102 max_operand_1 (XEXP (x, i));
103 else if (fmt[i] == 'E')
104 {
105 int j;
106 for (j = 0; j < XVECLEN (x, i); j++)
107 max_operand_1 (XVECEXP (x, i, j));
108 }
109 }
110}
111
112static int
113max_operand_vec (insn, arg)
114 rtx insn;
115 int arg;
116{
117 int len = XVECLEN (insn, arg);
118 int i;
119
120 max_opno = -1;
121 max_dup_opno = -1;
122 max_scratch_opno = -1;
123
124 for (i = 0; i < len; i++)
125 max_operand_1 (XVECEXP (insn, arg, i));
126
127 return max_opno + 1;
128}
129
130static void
131print_code (code)
132 RTX_CODE code;
133{
134 const char *p1;
135 for (p1 = GET_RTX_NAME (code); *p1; p1++)
136 putchar (TOUPPER(*p1));
137}
138
139static void
140gen_rtx_scratch (x, subroutine_type)
141 rtx x;
142 enum rtx_code subroutine_type;
143{
144 if (subroutine_type == DEFINE_PEEPHOLE2)
145 {
146 printf ("operand%d", XINT (x, 0));
147 }
148 else
149 {
150 printf ("gen_rtx_SCRATCH (%smode)", GET_MODE_NAME (GET_MODE (x)));
151 }
152}
153
154/* Print a C expression to construct an RTX just like X,
155 substituting any operand references appearing within. */
156
157static void
158gen_exp (x, subroutine_type, used)
159 rtx x;
160 enum rtx_code subroutine_type;
161 char *used;
162{
163 RTX_CODE code;
164 int i;
165 int len;
166 const char *fmt;
167
168 if (x == 0)
169 {
170 printf ("NULL_RTX");
171 return;
172 }
173
174 code = GET_CODE (x);
175
176 switch (code)
177 {
178 case MATCH_OPERAND:
179 case MATCH_DUP:
180 if (used)
181 {
182 if (used[XINT (x, 0)])
183 {
184 printf ("copy_rtx (operand%d)", XINT (x, 0));
185 return;
186 }
187 used[XINT (x, 0)] = 1;
188 }
189 printf ("operand%d", XINT (x, 0));
190 return;
191
192 case MATCH_OP_DUP:
193 printf ("gen_rtx (GET_CODE (operand%d), ", XINT (x, 0));
194 if (GET_MODE (x) == VOIDmode)
195 printf ("GET_MODE (operand%d)", XINT (x, 0));
196 else
197 printf ("%smode", GET_MODE_NAME (GET_MODE (x)));
198 for (i = 0; i < XVECLEN (x, 1); i++)
199 {
200 printf (",\n\t\t");
201 gen_exp (XVECEXP (x, 1, i), subroutine_type, used);
202 }
203 printf (")");
204 return;
205
206 case MATCH_OPERATOR:
207 printf ("gen_rtx (GET_CODE (operand%d)", XINT (x, 0));
208 printf (", %smode", GET_MODE_NAME (GET_MODE (x)));
209 for (i = 0; i < XVECLEN (x, 2); i++)
210 {
211 printf (",\n\t\t");
212 gen_exp (XVECEXP (x, 2, i), subroutine_type, used);
213 }
214 printf (")");
215 return;
216
217 case MATCH_PARALLEL:
218 case MATCH_PAR_DUP:
219 printf ("operand%d", XINT (x, 0));
220 return;
221
222 case MATCH_SCRATCH:
223 gen_rtx_scratch (x, subroutine_type);
224 return;
225
226 case ADDRESS:
227 fatal ("ADDRESS expression code used in named instruction pattern");
228
229 case PC:
230 printf ("pc_rtx");
231 return;
232
233 case CC0:
234 printf ("cc0_rtx");
235 return;
236
237 case CONST_INT:
238 if (INTVAL (x) == 0)
239 printf ("const0_rtx");
240 else if (INTVAL (x) == 1)
241 printf ("const1_rtx");
242 else if (INTVAL (x) == -1)
243 printf ("constm1_rtx");
244 else if (INTVAL (x) == STORE_FLAG_VALUE)
245 printf ("const_true_rtx");
246 else
247 {
248 printf ("GEN_INT (");
| 63static void gen_expand PARAMS ((rtx));
64static void gen_split PARAMS ((rtx));
65static void output_add_clobbers PARAMS ((void));
66static void output_added_clobbers_hard_reg_p PARAMS ((void));
67static void gen_rtx_scratch PARAMS ((rtx, enum rtx_code));
68static void output_peephole2_scratches PARAMS ((rtx));
69
70
71static void
72max_operand_1 (x)
73 rtx x;
74{
75 RTX_CODE code;
76 int i;
77 int len;
78 const char *fmt;
79
80 if (x == 0)
81 return;
82
83 code = GET_CODE (x);
84
85 if (code == MATCH_OPERAND && XSTR (x, 2) != 0 && *XSTR (x, 2) != '\0')
86 register_constraints = 1;
87 if (code == MATCH_SCRATCH && XSTR (x, 1) != 0 && *XSTR (x, 1) != '\0')
88 register_constraints = 1;
89 if (code == MATCH_OPERAND || code == MATCH_OPERATOR
90 || code == MATCH_PARALLEL)
91 max_opno = MAX (max_opno, XINT (x, 0));
92 if (code == MATCH_DUP || code == MATCH_OP_DUP || code == MATCH_PAR_DUP)
93 max_dup_opno = MAX (max_dup_opno, XINT (x, 0));
94 if (code == MATCH_SCRATCH)
95 max_scratch_opno = MAX (max_scratch_opno, XINT (x, 0));
96
97 fmt = GET_RTX_FORMAT (code);
98 len = GET_RTX_LENGTH (code);
99 for (i = 0; i < len; i++)
100 {
101 if (fmt[i] == 'e' || fmt[i] == 'u')
102 max_operand_1 (XEXP (x, i));
103 else if (fmt[i] == 'E')
104 {
105 int j;
106 for (j = 0; j < XVECLEN (x, i); j++)
107 max_operand_1 (XVECEXP (x, i, j));
108 }
109 }
110}
111
112static int
113max_operand_vec (insn, arg)
114 rtx insn;
115 int arg;
116{
117 int len = XVECLEN (insn, arg);
118 int i;
119
120 max_opno = -1;
121 max_dup_opno = -1;
122 max_scratch_opno = -1;
123
124 for (i = 0; i < len; i++)
125 max_operand_1 (XVECEXP (insn, arg, i));
126
127 return max_opno + 1;
128}
129
130static void
131print_code (code)
132 RTX_CODE code;
133{
134 const char *p1;
135 for (p1 = GET_RTX_NAME (code); *p1; p1++)
136 putchar (TOUPPER(*p1));
137}
138
139static void
140gen_rtx_scratch (x, subroutine_type)
141 rtx x;
142 enum rtx_code subroutine_type;
143{
144 if (subroutine_type == DEFINE_PEEPHOLE2)
145 {
146 printf ("operand%d", XINT (x, 0));
147 }
148 else
149 {
150 printf ("gen_rtx_SCRATCH (%smode)", GET_MODE_NAME (GET_MODE (x)));
151 }
152}
153
154/* Print a C expression to construct an RTX just like X,
155 substituting any operand references appearing within. */
156
157static void
158gen_exp (x, subroutine_type, used)
159 rtx x;
160 enum rtx_code subroutine_type;
161 char *used;
162{
163 RTX_CODE code;
164 int i;
165 int len;
166 const char *fmt;
167
168 if (x == 0)
169 {
170 printf ("NULL_RTX");
171 return;
172 }
173
174 code = GET_CODE (x);
175
176 switch (code)
177 {
178 case MATCH_OPERAND:
179 case MATCH_DUP:
180 if (used)
181 {
182 if (used[XINT (x, 0)])
183 {
184 printf ("copy_rtx (operand%d)", XINT (x, 0));
185 return;
186 }
187 used[XINT (x, 0)] = 1;
188 }
189 printf ("operand%d", XINT (x, 0));
190 return;
191
192 case MATCH_OP_DUP:
193 printf ("gen_rtx (GET_CODE (operand%d), ", XINT (x, 0));
194 if (GET_MODE (x) == VOIDmode)
195 printf ("GET_MODE (operand%d)", XINT (x, 0));
196 else
197 printf ("%smode", GET_MODE_NAME (GET_MODE (x)));
198 for (i = 0; i < XVECLEN (x, 1); i++)
199 {
200 printf (",\n\t\t");
201 gen_exp (XVECEXP (x, 1, i), subroutine_type, used);
202 }
203 printf (")");
204 return;
205
206 case MATCH_OPERATOR:
207 printf ("gen_rtx (GET_CODE (operand%d)", XINT (x, 0));
208 printf (", %smode", GET_MODE_NAME (GET_MODE (x)));
209 for (i = 0; i < XVECLEN (x, 2); i++)
210 {
211 printf (",\n\t\t");
212 gen_exp (XVECEXP (x, 2, i), subroutine_type, used);
213 }
214 printf (")");
215 return;
216
217 case MATCH_PARALLEL:
218 case MATCH_PAR_DUP:
219 printf ("operand%d", XINT (x, 0));
220 return;
221
222 case MATCH_SCRATCH:
223 gen_rtx_scratch (x, subroutine_type);
224 return;
225
226 case ADDRESS:
227 fatal ("ADDRESS expression code used in named instruction pattern");
228
229 case PC:
230 printf ("pc_rtx");
231 return;
232
233 case CC0:
234 printf ("cc0_rtx");
235 return;
236
237 case CONST_INT:
238 if (INTVAL (x) == 0)
239 printf ("const0_rtx");
240 else if (INTVAL (x) == 1)
241 printf ("const1_rtx");
242 else if (INTVAL (x) == -1)
243 printf ("constm1_rtx");
244 else if (INTVAL (x) == STORE_FLAG_VALUE)
245 printf ("const_true_rtx");
246 else
247 {
248 printf ("GEN_INT (");
|
249 printf (HOST_WIDE_INT_PRINT_DEC, INTVAL (x));
| 249 printf (HOST_WIDE_INT_PRINT_DEC_C, INTVAL (x));
|
250 printf (")");
251 }
252 return;
253
254 case CONST_DOUBLE:
255 /* These shouldn't be written in MD files. Instead, the appropriate
256 routines in varasm.c should be called. */
257 abort ();
258
259 default:
260 break;
261 }
262
263 printf ("gen_rtx_");
264 print_code (code);
265 printf (" (%smode", GET_MODE_NAME (GET_MODE (x)));
266
267 fmt = GET_RTX_FORMAT (code);
268 len = GET_RTX_LENGTH (code);
269 for (i = 0; i < len; i++)
270 {
271 if (fmt[i] == '0')
272 break;
273 printf (",\n\t");
274 if (fmt[i] == 'e' || fmt[i] == 'u')
275 gen_exp (XEXP (x, i), subroutine_type, used);
276 else if (fmt[i] == 'i')
277 printf ("%u", XINT (x, i));
278 else if (fmt[i] == 's')
279 printf ("\"%s\"", XSTR (x, i));
280 else if (fmt[i] == 'E')
281 {
282 int j;
283 printf ("gen_rtvec (%d", XVECLEN (x, i));
284 for (j = 0; j < XVECLEN (x, i); j++)
285 {
286 printf (",\n\t\t");
287 gen_exp (XVECEXP (x, i, j), subroutine_type, used);
288 }
289 printf (")");
290 }
291 else
292 abort ();
293 }
294 printf (")");
295}
296
297/* Generate the `gen_...' function for a DEFINE_INSN. */
298
299static void
| 250 printf (")");
251 }
252 return;
253
254 case CONST_DOUBLE:
255 /* These shouldn't be written in MD files. Instead, the appropriate
256 routines in varasm.c should be called. */
257 abort ();
258
259 default:
260 break;
261 }
262
263 printf ("gen_rtx_");
264 print_code (code);
265 printf (" (%smode", GET_MODE_NAME (GET_MODE (x)));
266
267 fmt = GET_RTX_FORMAT (code);
268 len = GET_RTX_LENGTH (code);
269 for (i = 0; i < len; i++)
270 {
271 if (fmt[i] == '0')
272 break;
273 printf (",\n\t");
274 if (fmt[i] == 'e' || fmt[i] == 'u')
275 gen_exp (XEXP (x, i), subroutine_type, used);
276 else if (fmt[i] == 'i')
277 printf ("%u", XINT (x, i));
278 else if (fmt[i] == 's')
279 printf ("\"%s\"", XSTR (x, i));
280 else if (fmt[i] == 'E')
281 {
282 int j;
283 printf ("gen_rtvec (%d", XVECLEN (x, i));
284 for (j = 0; j < XVECLEN (x, i); j++)
285 {
286 printf (",\n\t\t");
287 gen_exp (XVECEXP (x, i, j), subroutine_type, used);
288 }
289 printf (")");
290 }
291 else
292 abort ();
293 }
294 printf (")");
295}
296
297/* Generate the `gen_...' function for a DEFINE_INSN. */
298
299static void
|
300gen_insn (insn)
| 300gen_insn (insn, lineno)
|
301 rtx insn;
| 301 rtx insn;
|
| 302 int lineno;
|
302{
303 int operands;
304 int i;
305
306 /* See if the pattern for this insn ends with a group of CLOBBERs of (hard)
307 registers or MATCH_SCRATCHes. If so, store away the information for
308 later. */
309
310 if (XVEC (insn, 1))
311 {
312 int has_hard_reg = 0;
313
314 for (i = XVECLEN (insn, 1) - 1; i > 0; i--)
315 {
316 if (GET_CODE (XVECEXP (insn, 1, i)) != CLOBBER)
317 break;
318
319 if (GET_CODE (XEXP (XVECEXP (insn, 1, i), 0)) == REG)
320 has_hard_reg = 1;
321 else if (GET_CODE (XEXP (XVECEXP (insn, 1, i), 0)) != MATCH_SCRATCH)
322 break;
323 }
324
325 if (i != XVECLEN (insn, 1) - 1)
326 {
327 struct clobber_pat *p;
328 struct clobber_ent *link
329 = (struct clobber_ent *) xmalloc (sizeof (struct clobber_ent));
330 int j;
331
332 link->code_number = insn_code_number;
333
334 /* See if any previous CLOBBER_LIST entry is the same as this
335 one. */
336
337 for (p = clobber_list; p; p = p->next)
338 {
339 if (p->first_clobber != i + 1
340 || XVECLEN (p->pattern, 1) != XVECLEN (insn, 1))
341 continue;
342
343 for (j = i + 1; j < XVECLEN (insn, 1); j++)
344 {
345 rtx old = XEXP (XVECEXP (p->pattern, 1, j), 0);
346 rtx new = XEXP (XVECEXP (insn, 1, j), 0);
347
348 /* OLD and NEW are the same if both are to be a SCRATCH
349 of the same mode,
350 or if both are registers of the same mode and number. */
351 if (! (GET_MODE (old) == GET_MODE (new)
352 && ((GET_CODE (old) == MATCH_SCRATCH
353 && GET_CODE (new) == MATCH_SCRATCH)
354 || (GET_CODE (old) == REG && GET_CODE (new) == REG
355 && REGNO (old) == REGNO (new)))))
356 break;
357 }
358
359 if (j == XVECLEN (insn, 1))
360 break;
361 }
362
363 if (p == 0)
364 {
365 p = (struct clobber_pat *) xmalloc (sizeof (struct clobber_pat));
366
367 p->insns = 0;
368 p->pattern = insn;
369 p->first_clobber = i + 1;
370 p->next = clobber_list;
371 p->has_hard_reg = has_hard_reg;
372 clobber_list = p;
373 }
374
375 link->next = p->insns;
376 p->insns = link;
377 }
378 }
379
380 /* Don't mention instructions whose names are the null string
381 or begin with '*'. They are in the machine description just
382 to be recognized. */
383 if (XSTR (insn, 0)[0] == 0 || XSTR (insn, 0)[0] == '*')
384 return;
385
| 303{
304 int operands;
305 int i;
306
307 /* See if the pattern for this insn ends with a group of CLOBBERs of (hard)
308 registers or MATCH_SCRATCHes. If so, store away the information for
309 later. */
310
311 if (XVEC (insn, 1))
312 {
313 int has_hard_reg = 0;
314
315 for (i = XVECLEN (insn, 1) - 1; i > 0; i--)
316 {
317 if (GET_CODE (XVECEXP (insn, 1, i)) != CLOBBER)
318 break;
319
320 if (GET_CODE (XEXP (XVECEXP (insn, 1, i), 0)) == REG)
321 has_hard_reg = 1;
322 else if (GET_CODE (XEXP (XVECEXP (insn, 1, i), 0)) != MATCH_SCRATCH)
323 break;
324 }
325
326 if (i != XVECLEN (insn, 1) - 1)
327 {
328 struct clobber_pat *p;
329 struct clobber_ent *link
330 = (struct clobber_ent *) xmalloc (sizeof (struct clobber_ent));
331 int j;
332
333 link->code_number = insn_code_number;
334
335 /* See if any previous CLOBBER_LIST entry is the same as this
336 one. */
337
338 for (p = clobber_list; p; p = p->next)
339 {
340 if (p->first_clobber != i + 1
341 || XVECLEN (p->pattern, 1) != XVECLEN (insn, 1))
342 continue;
343
344 for (j = i + 1; j < XVECLEN (insn, 1); j++)
345 {
346 rtx old = XEXP (XVECEXP (p->pattern, 1, j), 0);
347 rtx new = XEXP (XVECEXP (insn, 1, j), 0);
348
349 /* OLD and NEW are the same if both are to be a SCRATCH
350 of the same mode,
351 or if both are registers of the same mode and number. */
352 if (! (GET_MODE (old) == GET_MODE (new)
353 && ((GET_CODE (old) == MATCH_SCRATCH
354 && GET_CODE (new) == MATCH_SCRATCH)
355 || (GET_CODE (old) == REG && GET_CODE (new) == REG
356 && REGNO (old) == REGNO (new)))))
357 break;
358 }
359
360 if (j == XVECLEN (insn, 1))
361 break;
362 }
363
364 if (p == 0)
365 {
366 p = (struct clobber_pat *) xmalloc (sizeof (struct clobber_pat));
367
368 p->insns = 0;
369 p->pattern = insn;
370 p->first_clobber = i + 1;
371 p->next = clobber_list;
372 p->has_hard_reg = has_hard_reg;
373 clobber_list = p;
374 }
375
376 link->next = p->insns;
377 p->insns = link;
378 }
379 }
380
381 /* Don't mention instructions whose names are the null string
382 or begin with '*'. They are in the machine description just
383 to be recognized. */
384 if (XSTR (insn, 0)[0] == 0 || XSTR (insn, 0)[0] == '*')
385 return;
386
|
| 387 printf ("/* %s:%d */\n", read_rtx_filename, lineno);
388
|
386 /* Find out how many operands this function has,
387 and also whether any of them have register constraints. */
388 register_constraints = 0;
389 operands = max_operand_vec (insn, 1);
390 if (max_dup_opno >= operands)
391 fatal ("match_dup operand number has no match_operand");
392
393 /* Output the function name and argument declarations. */
394 printf ("rtx\ngen_%s (", XSTR (insn, 0));
395 for (i = 0; i < operands; i++)
396 if (i)
397 printf (", operand%d", i);
398 else
399 printf ("operand%d", i);
400 printf (")\n");
401 for (i = 0; i < operands; i++)
402 printf (" rtx operand%d;\n", i);
403 printf ("{\n");
404
405 /* Output code to construct and return the rtl for the instruction body */
406
407 if (XVECLEN (insn, 1) == 1)
408 {
409 printf (" return ");
410 gen_exp (XVECEXP (insn, 1, 0), DEFINE_INSN, NULL);
411 printf (";\n}\n\n");
412 }
413 else
414 {
415 printf (" return gen_rtx_PARALLEL (VOIDmode, gen_rtvec (%d",
416 XVECLEN (insn, 1));
417
418 for (i = 0; i < XVECLEN (insn, 1); i++)
419 {
420 printf (",\n\t\t");
421 gen_exp (XVECEXP (insn, 1, i), DEFINE_INSN, NULL);
422 }
423 printf ("));\n}\n\n");
424 }
425}
426
427/* Generate the `gen_...' function for a DEFINE_EXPAND. */
428
429static void
430gen_expand (expand)
431 rtx expand;
432{
433 int operands;
434 int i;
435
436 if (strlen (XSTR (expand, 0)) == 0)
437 fatal ("define_expand lacks a name");
438 if (XVEC (expand, 1) == 0)
439 fatal ("define_expand for %s lacks a pattern", XSTR (expand, 0));
440
441 /* Find out how many operands this function has,
442 and also whether any of them have register constraints. */
443 register_constraints = 0;
444
445 operands = max_operand_vec (expand, 1);
446
447 /* Output the function name and argument declarations. */
448 printf ("rtx\ngen_%s (", XSTR (expand, 0));
449 for (i = 0; i < operands; i++)
450 if (i)
451 printf (", operand%d", i);
452 else
453 printf ("operand%d", i);
454 printf (")\n");
455 for (i = 0; i < operands; i++)
456 printf (" rtx operand%d;\n", i);
457 printf ("{\n");
458
459 /* If we don't have any C code to write, only one insn is being written,
460 and no MATCH_DUPs are present, we can just return the desired insn
461 like we do for a DEFINE_INSN. This saves memory. */
462 if ((XSTR (expand, 3) == 0 || *XSTR (expand, 3) == '\0')
463 && operands > max_dup_opno
464 && XVECLEN (expand, 1) == 1)
465 {
466 printf (" return ");
467 gen_exp (XVECEXP (expand, 1, 0), DEFINE_EXPAND, NULL);
468 printf (";\n}\n\n");
469 return;
470 }
471
472 /* For each operand referred to only with MATCH_DUPs,
473 make a local variable. */
474 for (i = operands; i <= max_dup_opno; i++)
475 printf (" rtx operand%d;\n", i);
476 for (; i <= max_scratch_opno; i++)
477 printf (" rtx operand%d ATTRIBUTE_UNUSED;\n", i);
478 printf (" rtx _val = 0;\n");
479 printf (" start_sequence ();\n");
480
481 /* The fourth operand of DEFINE_EXPAND is some code to be executed
482 before the actual construction.
483 This code expects to refer to `operands'
484 just as the output-code in a DEFINE_INSN does,
485 but here `operands' is an automatic array.
486 So copy the operand values there before executing it. */
487 if (XSTR (expand, 3) && *XSTR (expand, 3))
488 {
489 printf (" {\n");
490 if (operands > 0 || max_dup_opno >= 0 || max_scratch_opno >= 0)
491 printf (" rtx operands[%d];\n",
492 MAX (operands, MAX (max_scratch_opno, max_dup_opno) + 1));
493 /* Output code to copy the arguments into `operands'. */
494 for (i = 0; i < operands; i++)
495 printf (" operands[%d] = operand%d;\n", i, i);
496
497 /* Output the special code to be executed before the sequence
498 is generated. */
499 printf ("%s\n", XSTR (expand, 3));
500
501 /* Output code to copy the arguments back out of `operands'
502 (unless we aren't going to use them at all). */
503 if (XVEC (expand, 1) != 0)
504 {
505 for (i = 0; i < operands; i++)
506 printf (" operand%d = operands[%d];\n", i, i);
507 for (; i <= max_dup_opno; i++)
508 printf (" operand%d = operands[%d];\n", i, i);
509 for (; i <= max_scratch_opno; i++)
510 printf (" operand%d = operands[%d];\n", i, i);
511 }
512 printf (" }\n");
513 }
514
515 /* Output code to construct the rtl for the instruction bodies.
516 Use emit_insn to add them to the sequence being accumulated.
517 But don't do this if the user's code has set `no_more' nonzero. */
518
519 for (i = 0; i < XVECLEN (expand, 1); i++)
520 {
521 rtx next = XVECEXP (expand, 1, i);
522 if ((GET_CODE (next) == SET && GET_CODE (SET_DEST (next)) == PC)
523 || (GET_CODE (next) == PARALLEL
| 389 /* Find out how many operands this function has,
390 and also whether any of them have register constraints. */
391 register_constraints = 0;
392 operands = max_operand_vec (insn, 1);
393 if (max_dup_opno >= operands)
394 fatal ("match_dup operand number has no match_operand");
395
396 /* Output the function name and argument declarations. */
397 printf ("rtx\ngen_%s (", XSTR (insn, 0));
398 for (i = 0; i < operands; i++)
399 if (i)
400 printf (", operand%d", i);
401 else
402 printf ("operand%d", i);
403 printf (")\n");
404 for (i = 0; i < operands; i++)
405 printf (" rtx operand%d;\n", i);
406 printf ("{\n");
407
408 /* Output code to construct and return the rtl for the instruction body */
409
410 if (XVECLEN (insn, 1) == 1)
411 {
412 printf (" return ");
413 gen_exp (XVECEXP (insn, 1, 0), DEFINE_INSN, NULL);
414 printf (";\n}\n\n");
415 }
416 else
417 {
418 printf (" return gen_rtx_PARALLEL (VOIDmode, gen_rtvec (%d",
419 XVECLEN (insn, 1));
420
421 for (i = 0; i < XVECLEN (insn, 1); i++)
422 {
423 printf (",\n\t\t");
424 gen_exp (XVECEXP (insn, 1, i), DEFINE_INSN, NULL);
425 }
426 printf ("));\n}\n\n");
427 }
428}
429
430/* Generate the `gen_...' function for a DEFINE_EXPAND. */
431
432static void
433gen_expand (expand)
434 rtx expand;
435{
436 int operands;
437 int i;
438
439 if (strlen (XSTR (expand, 0)) == 0)
440 fatal ("define_expand lacks a name");
441 if (XVEC (expand, 1) == 0)
442 fatal ("define_expand for %s lacks a pattern", XSTR (expand, 0));
443
444 /* Find out how many operands this function has,
445 and also whether any of them have register constraints. */
446 register_constraints = 0;
447
448 operands = max_operand_vec (expand, 1);
449
450 /* Output the function name and argument declarations. */
451 printf ("rtx\ngen_%s (", XSTR (expand, 0));
452 for (i = 0; i < operands; i++)
453 if (i)
454 printf (", operand%d", i);
455 else
456 printf ("operand%d", i);
457 printf (")\n");
458 for (i = 0; i < operands; i++)
459 printf (" rtx operand%d;\n", i);
460 printf ("{\n");
461
462 /* If we don't have any C code to write, only one insn is being written,
463 and no MATCH_DUPs are present, we can just return the desired insn
464 like we do for a DEFINE_INSN. This saves memory. */
465 if ((XSTR (expand, 3) == 0 || *XSTR (expand, 3) == '\0')
466 && operands > max_dup_opno
467 && XVECLEN (expand, 1) == 1)
468 {
469 printf (" return ");
470 gen_exp (XVECEXP (expand, 1, 0), DEFINE_EXPAND, NULL);
471 printf (";\n}\n\n");
472 return;
473 }
474
475 /* For each operand referred to only with MATCH_DUPs,
476 make a local variable. */
477 for (i = operands; i <= max_dup_opno; i++)
478 printf (" rtx operand%d;\n", i);
479 for (; i <= max_scratch_opno; i++)
480 printf (" rtx operand%d ATTRIBUTE_UNUSED;\n", i);
481 printf (" rtx _val = 0;\n");
482 printf (" start_sequence ();\n");
483
484 /* The fourth operand of DEFINE_EXPAND is some code to be executed
485 before the actual construction.
486 This code expects to refer to `operands'
487 just as the output-code in a DEFINE_INSN does,
488 but here `operands' is an automatic array.
489 So copy the operand values there before executing it. */
490 if (XSTR (expand, 3) && *XSTR (expand, 3))
491 {
492 printf (" {\n");
493 if (operands > 0 || max_dup_opno >= 0 || max_scratch_opno >= 0)
494 printf (" rtx operands[%d];\n",
495 MAX (operands, MAX (max_scratch_opno, max_dup_opno) + 1));
496 /* Output code to copy the arguments into `operands'. */
497 for (i = 0; i < operands; i++)
498 printf (" operands[%d] = operand%d;\n", i, i);
499
500 /* Output the special code to be executed before the sequence
501 is generated. */
502 printf ("%s\n", XSTR (expand, 3));
503
504 /* Output code to copy the arguments back out of `operands'
505 (unless we aren't going to use them at all). */
506 if (XVEC (expand, 1) != 0)
507 {
508 for (i = 0; i < operands; i++)
509 printf (" operand%d = operands[%d];\n", i, i);
510 for (; i <= max_dup_opno; i++)
511 printf (" operand%d = operands[%d];\n", i, i);
512 for (; i <= max_scratch_opno; i++)
513 printf (" operand%d = operands[%d];\n", i, i);
514 }
515 printf (" }\n");
516 }
517
518 /* Output code to construct the rtl for the instruction bodies.
519 Use emit_insn to add them to the sequence being accumulated.
520 But don't do this if the user's code has set `no_more' nonzero. */
521
522 for (i = 0; i < XVECLEN (expand, 1); i++)
523 {
524 rtx next = XVECEXP (expand, 1, i);
525 if ((GET_CODE (next) == SET && GET_CODE (SET_DEST (next)) == PC)
526 || (GET_CODE (next) == PARALLEL
|
524 && GET_CODE (XVECEXP (next, 0, 0)) == SET
525 && GET_CODE (SET_DEST (XVECEXP (next, 0, 0))) == PC)
| 527 && ((GET_CODE (XVECEXP (next, 0, 0)) == SET
528 && GET_CODE (SET_DEST (XVECEXP (next, 0, 0))) == PC)
529 || GET_CODE (XVECEXP (next, 0, 0)) == RETURN))
|
526 || GET_CODE (next) == RETURN)
527 printf (" emit_jump_insn (");
528 else if ((GET_CODE (next) == SET && GET_CODE (SET_SRC (next)) == CALL)
529 || GET_CODE (next) == CALL
530 || (GET_CODE (next) == PARALLEL
531 && GET_CODE (XVECEXP (next, 0, 0)) == SET
532 && GET_CODE (SET_SRC (XVECEXP (next, 0, 0))) == CALL)
533 || (GET_CODE (next) == PARALLEL
534 && GET_CODE (XVECEXP (next, 0, 0)) == CALL))
535 printf (" emit_call_insn (");
536 else if (GET_CODE (next) == CODE_LABEL)
537 printf (" emit_label (");
538 else if (GET_CODE (next) == MATCH_OPERAND
539 || GET_CODE (next) == MATCH_DUP
540 || GET_CODE (next) == MATCH_OPERATOR
541 || GET_CODE (next) == MATCH_OP_DUP
542 || GET_CODE (next) == MATCH_PARALLEL
543 || GET_CODE (next) == MATCH_PAR_DUP
544 || GET_CODE (next) == PARALLEL)
545 printf (" emit (");
546 else
547 printf (" emit_insn (");
548 gen_exp (next, DEFINE_EXPAND, NULL);
549 printf (");\n");
550 if (GET_CODE (next) == SET && GET_CODE (SET_DEST (next)) == PC
551 && GET_CODE (SET_SRC (next)) == LABEL_REF)
552 printf (" emit_barrier ();");
553 }
554
| 530 || GET_CODE (next) == RETURN)
531 printf (" emit_jump_insn (");
532 else if ((GET_CODE (next) == SET && GET_CODE (SET_SRC (next)) == CALL)
533 || GET_CODE (next) == CALL
534 || (GET_CODE (next) == PARALLEL
535 && GET_CODE (XVECEXP (next, 0, 0)) == SET
536 && GET_CODE (SET_SRC (XVECEXP (next, 0, 0))) == CALL)
537 || (GET_CODE (next) == PARALLEL
538 && GET_CODE (XVECEXP (next, 0, 0)) == CALL))
539 printf (" emit_call_insn (");
540 else if (GET_CODE (next) == CODE_LABEL)
541 printf (" emit_label (");
542 else if (GET_CODE (next) == MATCH_OPERAND
543 || GET_CODE (next) == MATCH_DUP
544 || GET_CODE (next) == MATCH_OPERATOR
545 || GET_CODE (next) == MATCH_OP_DUP
546 || GET_CODE (next) == MATCH_PARALLEL
547 || GET_CODE (next) == MATCH_PAR_DUP
548 || GET_CODE (next) == PARALLEL)
549 printf (" emit (");
550 else
551 printf (" emit_insn (");
552 gen_exp (next, DEFINE_EXPAND, NULL);
553 printf (");\n");
554 if (GET_CODE (next) == SET && GET_CODE (SET_DEST (next)) == PC
555 && GET_CODE (SET_SRC (next)) == LABEL_REF)
556 printf (" emit_barrier ();");
557 }
558
|
555 /* Call `gen_sequence' to make a SEQUENCE out of all the
| 559 /* Call `get_insns' to extract the list of all the
|
556 insns emitted within this gen_... function. */
557
| 560 insns emitted within this gen_... function. */
561
|
558 printf (" _val = gen_sequence ();\n");
| 562 printf (" _val = get_insns ();\n");
|
559 printf (" end_sequence ();\n");
560 printf (" return _val;\n}\n\n");
561}
562
| 563 printf (" end_sequence ();\n");
564 printf (" return _val;\n}\n\n");
565}
566
|
563/* Like gen_expand, but generates a SEQUENCE. */
| 567/* Like gen_expand, but generates insns resulting from splitting SPLIT. */
|
564
565static void
566gen_split (split)
567 rtx split;
568{
569 int i;
570 int operands;
571 const char *const name =
572 ((GET_CODE (split) == DEFINE_PEEPHOLE2) ? "peephole2" : "split");
573 const char *unused;
574 char *used;
575
576 if (XVEC (split, 0) == 0)
577 fatal ("define_%s (definition %d) lacks a pattern", name,
578 insn_index_number);
579 else if (XVEC (split, 2) == 0)
580 fatal ("define_%s (definition %d) lacks a replacement pattern", name,
581 insn_index_number);
582
583 /* Find out how many operands this function has. */
584
585 max_operand_vec (split, 2);
586 operands = MAX (max_opno, MAX (max_dup_opno, max_scratch_opno)) + 1;
587 unused = (operands == 0 ? " ATTRIBUTE_UNUSED" : "");
588 used = xcalloc (1, operands);
589
590 /* Output the prototype, function name and argument declarations. */
591 if (GET_CODE (split) == DEFINE_PEEPHOLE2)
592 {
593 printf ("extern rtx gen_%s_%d PARAMS ((rtx, rtx *));\n",
594 name, insn_code_number);
595 printf ("rtx\ngen_%s_%d (curr_insn, operands)\n",
596 name, insn_code_number);
597 printf (" rtx curr_insn ATTRIBUTE_UNUSED;\n");
598 printf (" rtx *operands%s;\n", unused);
599 }
600 else
601 {
602 printf ("extern rtx gen_split_%d PARAMS ((rtx *));\n", insn_code_number);
603 printf ("rtx\ngen_%s_%d (operands)\n", name, insn_code_number);
604 printf (" rtx *operands%s;\n", unused);
605 }
606 printf ("{\n");
607
608 /* Declare all local variables. */
609 for (i = 0; i < operands; i++)
610 printf (" rtx operand%d;\n", i);
611 printf (" rtx _val = 0;\n");
612
613 if (GET_CODE (split) == DEFINE_PEEPHOLE2)
614 output_peephole2_scratches (split);
615
616 printf (" start_sequence ();\n");
617
618 /* The fourth operand of DEFINE_SPLIT is some code to be executed
619 before the actual construction. */
620
621 if (XSTR (split, 3))
622 printf ("%s\n", XSTR (split, 3));
623
624 /* Output code to copy the arguments back out of `operands' */
625 for (i = 0; i < operands; i++)
626 printf (" operand%d = operands[%d];\n", i, i);
627
628 /* Output code to construct the rtl for the instruction bodies.
629 Use emit_insn to add them to the sequence being accumulated.
630 But don't do this if the user's code has set `no_more' nonzero. */
631
632 for (i = 0; i < XVECLEN (split, 2); i++)
633 {
634 rtx next = XVECEXP (split, 2, i);
635 if ((GET_CODE (next) == SET && GET_CODE (SET_DEST (next)) == PC)
636 || (GET_CODE (next) == PARALLEL
637 && GET_CODE (XVECEXP (next, 0, 0)) == SET
638 && GET_CODE (SET_DEST (XVECEXP (next, 0, 0))) == PC)
639 || GET_CODE (next) == RETURN)
640 printf (" emit_jump_insn (");
641 else if ((GET_CODE (next) == SET && GET_CODE (SET_SRC (next)) == CALL)
642 || GET_CODE (next) == CALL
643 || (GET_CODE (next) == PARALLEL
644 && GET_CODE (XVECEXP (next, 0, 0)) == SET
645 && GET_CODE (SET_SRC (XVECEXP (next, 0, 0))) == CALL)
646 || (GET_CODE (next) == PARALLEL
647 && GET_CODE (XVECEXP (next, 0, 0)) == CALL))
648 printf (" emit_call_insn (");
649 else if (GET_CODE (next) == CODE_LABEL)
650 printf (" emit_label (");
651 else if (GET_CODE (next) == MATCH_OPERAND
652 || GET_CODE (next) == MATCH_OPERATOR
653 || GET_CODE (next) == MATCH_PARALLEL
654 || GET_CODE (next) == MATCH_OP_DUP
655 || GET_CODE (next) == MATCH_DUP
656 || GET_CODE (next) == PARALLEL)
657 printf (" emit (");
658 else
659 printf (" emit_insn (");
660 gen_exp (next, GET_CODE (split), used);
661 printf (");\n");
662 if (GET_CODE (next) == SET && GET_CODE (SET_DEST (next)) == PC
663 && GET_CODE (SET_SRC (next)) == LABEL_REF)
664 printf (" emit_barrier ();");
665 }
666
| 568
569static void
570gen_split (split)
571 rtx split;
572{
573 int i;
574 int operands;
575 const char *const name =
576 ((GET_CODE (split) == DEFINE_PEEPHOLE2) ? "peephole2" : "split");
577 const char *unused;
578 char *used;
579
580 if (XVEC (split, 0) == 0)
581 fatal ("define_%s (definition %d) lacks a pattern", name,
582 insn_index_number);
583 else if (XVEC (split, 2) == 0)
584 fatal ("define_%s (definition %d) lacks a replacement pattern", name,
585 insn_index_number);
586
587 /* Find out how many operands this function has. */
588
589 max_operand_vec (split, 2);
590 operands = MAX (max_opno, MAX (max_dup_opno, max_scratch_opno)) + 1;
591 unused = (operands == 0 ? " ATTRIBUTE_UNUSED" : "");
592 used = xcalloc (1, operands);
593
594 /* Output the prototype, function name and argument declarations. */
595 if (GET_CODE (split) == DEFINE_PEEPHOLE2)
596 {
597 printf ("extern rtx gen_%s_%d PARAMS ((rtx, rtx *));\n",
598 name, insn_code_number);
599 printf ("rtx\ngen_%s_%d (curr_insn, operands)\n",
600 name, insn_code_number);
601 printf (" rtx curr_insn ATTRIBUTE_UNUSED;\n");
602 printf (" rtx *operands%s;\n", unused);
603 }
604 else
605 {
606 printf ("extern rtx gen_split_%d PARAMS ((rtx *));\n", insn_code_number);
607 printf ("rtx\ngen_%s_%d (operands)\n", name, insn_code_number);
608 printf (" rtx *operands%s;\n", unused);
609 }
610 printf ("{\n");
611
612 /* Declare all local variables. */
613 for (i = 0; i < operands; i++)
614 printf (" rtx operand%d;\n", i);
615 printf (" rtx _val = 0;\n");
616
617 if (GET_CODE (split) == DEFINE_PEEPHOLE2)
618 output_peephole2_scratches (split);
619
620 printf (" start_sequence ();\n");
621
622 /* The fourth operand of DEFINE_SPLIT is some code to be executed
623 before the actual construction. */
624
625 if (XSTR (split, 3))
626 printf ("%s\n", XSTR (split, 3));
627
628 /* Output code to copy the arguments back out of `operands' */
629 for (i = 0; i < operands; i++)
630 printf (" operand%d = operands[%d];\n", i, i);
631
632 /* Output code to construct the rtl for the instruction bodies.
633 Use emit_insn to add them to the sequence being accumulated.
634 But don't do this if the user's code has set `no_more' nonzero. */
635
636 for (i = 0; i < XVECLEN (split, 2); i++)
637 {
638 rtx next = XVECEXP (split, 2, i);
639 if ((GET_CODE (next) == SET && GET_CODE (SET_DEST (next)) == PC)
640 || (GET_CODE (next) == PARALLEL
641 && GET_CODE (XVECEXP (next, 0, 0)) == SET
642 && GET_CODE (SET_DEST (XVECEXP (next, 0, 0))) == PC)
643 || GET_CODE (next) == RETURN)
644 printf (" emit_jump_insn (");
645 else if ((GET_CODE (next) == SET && GET_CODE (SET_SRC (next)) == CALL)
646 || GET_CODE (next) == CALL
647 || (GET_CODE (next) == PARALLEL
648 && GET_CODE (XVECEXP (next, 0, 0)) == SET
649 && GET_CODE (SET_SRC (XVECEXP (next, 0, 0))) == CALL)
650 || (GET_CODE (next) == PARALLEL
651 && GET_CODE (XVECEXP (next, 0, 0)) == CALL))
652 printf (" emit_call_insn (");
653 else if (GET_CODE (next) == CODE_LABEL)
654 printf (" emit_label (");
655 else if (GET_CODE (next) == MATCH_OPERAND
656 || GET_CODE (next) == MATCH_OPERATOR
657 || GET_CODE (next) == MATCH_PARALLEL
658 || GET_CODE (next) == MATCH_OP_DUP
659 || GET_CODE (next) == MATCH_DUP
660 || GET_CODE (next) == PARALLEL)
661 printf (" emit (");
662 else
663 printf (" emit_insn (");
664 gen_exp (next, GET_CODE (split), used);
665 printf (");\n");
666 if (GET_CODE (next) == SET && GET_CODE (SET_DEST (next)) == PC
667 && GET_CODE (SET_SRC (next)) == LABEL_REF)
668 printf (" emit_barrier ();");
669 }
670
|
667 /* Call `gen_sequence' to make a SEQUENCE out of all the
| 671 /* Call `get_insns' to make a list of all the
|
668 insns emitted within this gen_... function. */
669
| 672 insns emitted within this gen_... function. */
673
|
670 printf (" _val = gen_sequence ();\n");
| 674 printf (" _val = get_insns ();\n");
|
671 printf (" end_sequence ();\n");
672 printf (" return _val;\n}\n\n");
673
674 free (used);
675}
676
677/* Write a function, `add_clobbers', that is given a PARALLEL of sufficient
678 size for the insn and an INSN_CODE, and inserts the required CLOBBERs at
679 the end of the vector. */
680
681static void
682output_add_clobbers ()
683{
684 struct clobber_pat *clobber;
685 struct clobber_ent *ent;
686 int i;
687
688 printf ("\n\nvoid\nadd_clobbers (pattern, insn_code_number)\n");
689 printf (" rtx pattern ATTRIBUTE_UNUSED;\n int insn_code_number;\n");
690 printf ("{\n");
691 printf (" switch (insn_code_number)\n");
692 printf (" {\n");
693
694 for (clobber = clobber_list; clobber; clobber = clobber->next)
695 {
696 for (ent = clobber->insns; ent; ent = ent->next)
697 printf (" case %d:\n", ent->code_number);
698
699 for (i = clobber->first_clobber; i < XVECLEN (clobber->pattern, 1); i++)
700 {
701 printf (" XVECEXP (pattern, 0, %d) = ", i);
702 gen_exp (XVECEXP (clobber->pattern, 1, i),
703 GET_CODE (clobber->pattern), NULL);
704 printf (";\n");
705 }
706
707 printf (" break;\n\n");
708 }
709
710 printf (" default:\n");
711 printf (" abort ();\n");
712 printf (" }\n");
713 printf ("}\n");
714}
715
716/* Write a function, `added_clobbers_hard_reg_p' this is given an insn_code
717 number that needs clobbers and returns 1 if they include a clobber of a
718 hard reg and 0 if they just clobber SCRATCH. */
719
720static void
721output_added_clobbers_hard_reg_p ()
722{
723 struct clobber_pat *clobber;
724 struct clobber_ent *ent;
725 int clobber_p, used;
726
727 printf ("\n\nint\nadded_clobbers_hard_reg_p (insn_code_number)\n");
728 printf (" int insn_code_number;\n");
729 printf ("{\n");
730 printf (" switch (insn_code_number)\n");
731 printf (" {\n");
732
733 for (clobber_p = 0; clobber_p <= 1; clobber_p++)
734 {
735 used = 0;
736 for (clobber = clobber_list; clobber; clobber = clobber->next)
737 if (clobber->has_hard_reg == clobber_p)
738 for (ent = clobber->insns; ent; ent = ent->next)
739 {
740 printf (" case %d:\n", ent->code_number);
741 used++;
742 }
743
744 if (used)
745 printf (" return %d;\n\n", clobber_p);
746 }
747
748 printf (" default:\n");
749 printf (" abort ();\n");
750 printf (" }\n");
751 printf ("}\n");
752}
753
754/* Generate code to invoke find_free_register () as needed for the
755 scratch registers used by the peephole2 pattern in SPLIT. */
756
757static void
758output_peephole2_scratches (split)
759 rtx split;
760{
761 int i;
762 int insn_nr = 0;
763
764 printf (" HARD_REG_SET _regs_allocated;\n");
765 printf (" CLEAR_HARD_REG_SET (_regs_allocated);\n");
766
767 for (i = 0; i < XVECLEN (split, 0); i++)
768 {
769 rtx elt = XVECEXP (split, 0, i);
770 if (GET_CODE (elt) == MATCH_SCRATCH)
771 {
772 int last_insn_nr = insn_nr;
773 int cur_insn_nr = insn_nr;
774 int j;
775 for (j = i + 1; j < XVECLEN (split, 0); j++)
776 if (GET_CODE (XVECEXP (split, 0, j)) == MATCH_DUP)
777 {
778 if (XINT (XVECEXP (split, 0, j), 0) == XINT (elt, 0))
779 last_insn_nr = cur_insn_nr;
780 }
781 else if (GET_CODE (XVECEXP (split, 0, j)) != MATCH_SCRATCH)
782 cur_insn_nr++;
783
784 printf (" if ((operands[%d] = peep2_find_free_register (%d, %d, \"%s\", %smode, &_regs_allocated)) == NULL_RTX)\n\
785 return NULL;\n",
786 XINT (elt, 0),
787 insn_nr, last_insn_nr,
788 XSTR (elt, 1),
789 GET_MODE_NAME (GET_MODE (elt)));
790
791 }
792 else if (GET_CODE (elt) != MATCH_DUP)
793 insn_nr++;
794 }
795}
796
797extern int main PARAMS ((int, char **));
798
799int
800main (argc, argv)
801 int argc;
802 char **argv;
803{
804 rtx desc;
805
806 progname = "genemit";
807
808 if (argc <= 1)
809 fatal ("no input file name");
810
811 if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
812 return (FATAL_EXIT_CODE);
813
814 /* Assign sequential codes to all entries in the machine description
815 in parallel with the tables in insn-output.c. */
816
817 insn_code_number = 0;
818 insn_index_number = 0;
819
820 printf ("/* Generated automatically by the program `genemit'\n\
821from the machine description file `md'. */\n\n");
822
823 printf ("#include \"config.h\"\n");
824 printf ("#include \"system.h\"\n");
825 printf ("#include \"rtl.h\"\n");
826 printf ("#include \"tm_p.h\"\n");
827 printf ("#include \"function.h\"\n");
828 printf ("#include \"expr.h\"\n");
829 printf ("#include \"optabs.h\"\n");
830 printf ("#include \"real.h\"\n");
831 printf ("#include \"flags.h\"\n");
832 printf ("#include \"output.h\"\n");
833 printf ("#include \"insn-config.h\"\n");
834 printf ("#include \"hard-reg-set.h\"\n");
835 printf ("#include \"recog.h\"\n");
836 printf ("#include \"resource.h\"\n");
837 printf ("#include \"reload.h\"\n");
838 printf ("#include \"toplev.h\"\n");
839 printf ("#include \"ggc.h\"\n\n");
840 printf ("#define FAIL return (end_sequence (), _val)\n");
| 675 printf (" end_sequence ();\n");
676 printf (" return _val;\n}\n\n");
677
678 free (used);
679}
680
681/* Write a function, `add_clobbers', that is given a PARALLEL of sufficient
682 size for the insn and an INSN_CODE, and inserts the required CLOBBERs at
683 the end of the vector. */
684
685static void
686output_add_clobbers ()
687{
688 struct clobber_pat *clobber;
689 struct clobber_ent *ent;
690 int i;
691
692 printf ("\n\nvoid\nadd_clobbers (pattern, insn_code_number)\n");
693 printf (" rtx pattern ATTRIBUTE_UNUSED;\n int insn_code_number;\n");
694 printf ("{\n");
695 printf (" switch (insn_code_number)\n");
696 printf (" {\n");
697
698 for (clobber = clobber_list; clobber; clobber = clobber->next)
699 {
700 for (ent = clobber->insns; ent; ent = ent->next)
701 printf (" case %d:\n", ent->code_number);
702
703 for (i = clobber->first_clobber; i < XVECLEN (clobber->pattern, 1); i++)
704 {
705 printf (" XVECEXP (pattern, 0, %d) = ", i);
706 gen_exp (XVECEXP (clobber->pattern, 1, i),
707 GET_CODE (clobber->pattern), NULL);
708 printf (";\n");
709 }
710
711 printf (" break;\n\n");
712 }
713
714 printf (" default:\n");
715 printf (" abort ();\n");
716 printf (" }\n");
717 printf ("}\n");
718}
719
720/* Write a function, `added_clobbers_hard_reg_p' this is given an insn_code
721 number that needs clobbers and returns 1 if they include a clobber of a
722 hard reg and 0 if they just clobber SCRATCH. */
723
724static void
725output_added_clobbers_hard_reg_p ()
726{
727 struct clobber_pat *clobber;
728 struct clobber_ent *ent;
729 int clobber_p, used;
730
731 printf ("\n\nint\nadded_clobbers_hard_reg_p (insn_code_number)\n");
732 printf (" int insn_code_number;\n");
733 printf ("{\n");
734 printf (" switch (insn_code_number)\n");
735 printf (" {\n");
736
737 for (clobber_p = 0; clobber_p <= 1; clobber_p++)
738 {
739 used = 0;
740 for (clobber = clobber_list; clobber; clobber = clobber->next)
741 if (clobber->has_hard_reg == clobber_p)
742 for (ent = clobber->insns; ent; ent = ent->next)
743 {
744 printf (" case %d:\n", ent->code_number);
745 used++;
746 }
747
748 if (used)
749 printf (" return %d;\n\n", clobber_p);
750 }
751
752 printf (" default:\n");
753 printf (" abort ();\n");
754 printf (" }\n");
755 printf ("}\n");
756}
757
758/* Generate code to invoke find_free_register () as needed for the
759 scratch registers used by the peephole2 pattern in SPLIT. */
760
761static void
762output_peephole2_scratches (split)
763 rtx split;
764{
765 int i;
766 int insn_nr = 0;
767
768 printf (" HARD_REG_SET _regs_allocated;\n");
769 printf (" CLEAR_HARD_REG_SET (_regs_allocated);\n");
770
771 for (i = 0; i < XVECLEN (split, 0); i++)
772 {
773 rtx elt = XVECEXP (split, 0, i);
774 if (GET_CODE (elt) == MATCH_SCRATCH)
775 {
776 int last_insn_nr = insn_nr;
777 int cur_insn_nr = insn_nr;
778 int j;
779 for (j = i + 1; j < XVECLEN (split, 0); j++)
780 if (GET_CODE (XVECEXP (split, 0, j)) == MATCH_DUP)
781 {
782 if (XINT (XVECEXP (split, 0, j), 0) == XINT (elt, 0))
783 last_insn_nr = cur_insn_nr;
784 }
785 else if (GET_CODE (XVECEXP (split, 0, j)) != MATCH_SCRATCH)
786 cur_insn_nr++;
787
788 printf (" if ((operands[%d] = peep2_find_free_register (%d, %d, \"%s\", %smode, &_regs_allocated)) == NULL_RTX)\n\
789 return NULL;\n",
790 XINT (elt, 0),
791 insn_nr, last_insn_nr,
792 XSTR (elt, 1),
793 GET_MODE_NAME (GET_MODE (elt)));
794
795 }
796 else if (GET_CODE (elt) != MATCH_DUP)
797 insn_nr++;
798 }
799}
800
801extern int main PARAMS ((int, char **));
802
803int
804main (argc, argv)
805 int argc;
806 char **argv;
807{
808 rtx desc;
809
810 progname = "genemit";
811
812 if (argc <= 1)
813 fatal ("no input file name");
814
815 if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
816 return (FATAL_EXIT_CODE);
817
818 /* Assign sequential codes to all entries in the machine description
819 in parallel with the tables in insn-output.c. */
820
821 insn_code_number = 0;
822 insn_index_number = 0;
823
824 printf ("/* Generated automatically by the program `genemit'\n\
825from the machine description file `md'. */\n\n");
826
827 printf ("#include \"config.h\"\n");
828 printf ("#include \"system.h\"\n");
829 printf ("#include \"rtl.h\"\n");
830 printf ("#include \"tm_p.h\"\n");
831 printf ("#include \"function.h\"\n");
832 printf ("#include \"expr.h\"\n");
833 printf ("#include \"optabs.h\"\n");
834 printf ("#include \"real.h\"\n");
835 printf ("#include \"flags.h\"\n");
836 printf ("#include \"output.h\"\n");
837 printf ("#include \"insn-config.h\"\n");
838 printf ("#include \"hard-reg-set.h\"\n");
839 printf ("#include \"recog.h\"\n");
840 printf ("#include \"resource.h\"\n");
841 printf ("#include \"reload.h\"\n");
842 printf ("#include \"toplev.h\"\n");
843 printf ("#include \"ggc.h\"\n\n");
844 printf ("#define FAIL return (end_sequence (), _val)\n");
|
841 printf ("#define DONE return (_val = gen_sequence (), end_sequence (), _val)\n");
| 845 printf ("#define DONE return (_val = get_insns (), end_sequence (), _val)\n\n");
|
842
843 /* Read the machine description. */
844
845 while (1)
846 {
847 int line_no;
848
849 desc = read_md_rtx (&line_no, &insn_code_number);
850 if (desc == NULL)
851 break;
852
853 switch (GET_CODE (desc))
854 {
| 846
847 /* Read the machine description. */
848
849 while (1)
850 {
851 int line_no;
852
853 desc = read_md_rtx (&line_no, &insn_code_number);
854 if (desc == NULL)
855 break;
856
857 switch (GET_CODE (desc))
858 {
|
855 case DEFINE_INSN:
856 gen_insn (desc);
857 break;
| 859 case DEFINE_INSN:
860 gen_insn (desc, line_no);
861 break;
|
858
| 862
|
859 case DEFINE_EXPAND:
860 gen_expand (desc);
861 break;
| 863 case DEFINE_EXPAND:
864 printf ("/* %s:%d */\n", read_rtx_filename, line_no);
865 gen_expand (desc);
866 break;
|
862
| 867
|
863 case DEFINE_SPLIT:
864 gen_split (desc);
865 break;
| 868 case DEFINE_SPLIT:
869 printf ("/* %s:%d */\n", read_rtx_filename, line_no);
870 gen_split (desc);
871 break;
|
866
| 872
|
867 case DEFINE_PEEPHOLE2:
868 gen_split (desc);
869 break;
| 873 case DEFINE_PEEPHOLE2:
874 printf ("/* %s:%d */\n", read_rtx_filename, line_no);
875 gen_split (desc);
876 break;
|
870
| 877
|
871 default:
872 break;
873 }
| 878 default:
879 break;
880 }
|
874 ++insn_index_number;
875 }
876
877 /* Write out the routines to add CLOBBERs to a pattern and say whether they
878 clobber a hard reg. */
879 output_add_clobbers ();
880 output_added_clobbers_hard_reg_p ();
881
882 fflush (stdout);
883 return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
884}
885
886/* Define this so we can link with print-rtl.o to get debug_rtx function. */
887const char *
888get_insn_name (code)
889 int code ATTRIBUTE_UNUSED;
890{
891 return NULL;
892}
| 881 ++insn_index_number;
882 }
883
884 /* Write out the routines to add CLOBBERs to a pattern and say whether they
885 clobber a hard reg. */
886 output_add_clobbers ();
887 output_added_clobbers_hard_reg_p ();
888
889 fflush (stdout);
890 return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
891}
892
893/* Define this so we can link with print-rtl.o to get debug_rtx function. */
894const char *
895get_insn_name (code)
896 int code ATTRIBUTE_UNUSED;
897{
898 return NULL;
899}
|