Mercurial > hg > CbC > CbC_gcc
annotate gcc/genattr.c @ 55:77e2b8dfacca gcc-4.4.5
update it from 4.4.3 to 4.5.0
| author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Fri, 12 Feb 2010 23:39:51 +0900 |
| parents | a06113de4d67 |
| children | f6334be47118 |
| rev | line source |
|---|---|
| 0 | 1 /* Generate attribute information (insn-attr.h) from machine description. |
| 2 Copyright (C) 1991, 1994, 1996, 1998, 1999, 2000, 2003, 2004, 2007, 2008 | |
| 3 Free Software Foundation, Inc. | |
| 4 Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu) | |
| 5 | |
| 6 This file is part of GCC. | |
| 7 | |
| 8 GCC is free software; you can redistribute it and/or modify it under | |
| 9 the terms of the GNU General Public License as published by the Free | |
| 10 Software Foundation; either version 3, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 14 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with GCC; see the file COPYING3. If not see | |
| 20 <http://www.gnu.org/licenses/>. */ | |
| 21 | |
| 22 | |
| 23 #include "bconfig.h" | |
| 24 #include "system.h" | |
| 25 #include "coretypes.h" | |
| 26 #include "tm.h" | |
| 27 #include "rtl.h" | |
| 28 #include "errors.h" | |
| 29 #include "gensupport.h" | |
| 30 | |
| 31 | |
| 32 static void write_upcase (const char *); | |
| 33 static void gen_attr (rtx); | |
| 34 | |
| 35 static void | |
| 36 write_upcase (const char *str) | |
| 37 { | |
| 38 for (; *str; str++) | |
| 39 putchar (TOUPPER(*str)); | |
| 40 } | |
| 41 | |
| 42 static void | |
| 43 gen_attr (rtx attr) | |
| 44 { | |
| 45 const char *p, *tag; | |
| 46 int is_const = GET_CODE (XEXP (attr, 2)) == CONST; | |
| 47 | |
| 48 printf ("#define HAVE_ATTR_%s\n", XSTR (attr, 0)); | |
| 49 | |
| 50 /* If numeric attribute, don't need to write an enum. */ | |
| 51 p = XSTR (attr, 1); | |
| 52 if (*p == '\0') | |
| 53 printf ("extern int get_attr_%s (%s);\n", XSTR (attr, 0), | |
| 54 (is_const ? "void" : "rtx")); | |
| 55 else | |
| 56 { | |
| 57 printf ("enum attr_%s {", XSTR (attr, 0)); | |
| 58 | |
| 59 while ((tag = scan_comma_elt (&p)) != 0) | |
| 60 { | |
| 61 write_upcase (XSTR (attr, 0)); | |
| 62 putchar ('_'); | |
| 63 while (tag != p) | |
| 64 putchar (TOUPPER (*tag++)); | |
| 65 if (*p == ',') | |
| 66 fputs (", ", stdout); | |
| 67 } | |
| 68 | |
| 69 fputs ("};\n", stdout); | |
| 70 printf ("extern enum attr_%s get_attr_%s (%s);\n\n", | |
| 71 XSTR (attr, 0), XSTR (attr, 0), (is_const ? "void" : "rtx")); | |
| 72 } | |
| 73 | |
| 74 /* If `length' attribute, write additional function definitions and define | |
| 75 variables used by `insn_current_length'. */ | |
| 76 if (! strcmp (XSTR (attr, 0), "length")) | |
| 77 { | |
| 78 puts ("\ | |
| 79 extern void shorten_branches (rtx);\n\ | |
| 80 extern int insn_default_length (rtx);\n\ | |
| 81 extern int insn_min_length (rtx);\n\ | |
| 82 extern int insn_variable_length_p (rtx);\n\ | |
| 83 extern int insn_current_length (rtx);\n\n\ | |
| 84 #include \"insn-addr.h\"\n"); | |
| 85 } | |
| 86 } | |
| 87 | |
| 88 int | |
| 89 main (int argc, char **argv) | |
| 90 { | |
| 91 rtx desc; | |
| 92 int have_delay = 0; | |
| 93 int have_annul_true = 0; | |
| 94 int have_annul_false = 0; | |
| 95 int num_insn_reservations = 0; | |
| 96 int i; | |
| 97 | |
| 98 progname = "genattr"; | |
| 99 | |
| 100 if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE) | |
| 101 return (FATAL_EXIT_CODE); | |
| 102 | |
| 103 puts ("/* Generated automatically by the program `genattr'"); | |
| 104 puts (" from the machine description file `md'. */\n"); | |
| 105 puts ("#ifndef GCC_INSN_ATTR_H"); | |
| 106 puts ("#define GCC_INSN_ATTR_H\n"); | |
| 107 | |
| 108 /* For compatibility, define the attribute `alternative', which is just | |
| 109 a reference to the variable `which_alternative'. */ | |
| 110 | |
| 111 puts ("#define HAVE_ATTR_alternative"); | |
| 112 puts ("#define get_attr_alternative(insn) which_alternative"); | |
| 113 | |
| 114 /* Read the machine description. */ | |
| 115 | |
| 116 while (1) | |
| 117 { | |
| 118 int line_no, insn_code_number; | |
| 119 | |
| 120 desc = read_md_rtx (&line_no, &insn_code_number); | |
| 121 if (desc == NULL) | |
| 122 break; | |
| 123 | |
| 124 if (GET_CODE (desc) == DEFINE_ATTR) | |
| 125 gen_attr (desc); | |
| 126 | |
| 127 else if (GET_CODE (desc) == DEFINE_DELAY) | |
| 128 { | |
| 129 if (! have_delay) | |
| 130 { | |
| 131 printf ("#define DELAY_SLOTS\n"); | |
| 132 printf ("extern int num_delay_slots (rtx);\n"); | |
| 133 printf ("extern int eligible_for_delay (rtx, int, rtx, int);\n\n"); | |
| 134 printf ("extern int const_num_delay_slots (rtx);\n\n"); | |
| 135 have_delay = 1; | |
| 136 } | |
| 137 | |
| 138 for (i = 0; i < XVECLEN (desc, 1); i += 3) | |
| 139 { | |
| 140 if (XVECEXP (desc, 1, i + 1) && ! have_annul_true) | |
| 141 { | |
| 142 printf ("#define ANNUL_IFTRUE_SLOTS\n"); | |
| 143 printf ("extern int eligible_for_annul_true (rtx, int, rtx, int);\n"); | |
| 144 have_annul_true = 1; | |
| 145 } | |
| 146 | |
| 147 if (XVECEXP (desc, 1, i + 2) && ! have_annul_false) | |
| 148 { | |
| 149 printf ("#define ANNUL_IFFALSE_SLOTS\n"); | |
| 150 printf ("extern int eligible_for_annul_false (rtx, int, rtx, int);\n"); | |
| 151 have_annul_false = 1; | |
| 152 } | |
| 153 } | |
| 154 } | |
| 155 | |
| 156 else if (GET_CODE (desc) == DEFINE_INSN_RESERVATION) | |
| 157 num_insn_reservations++; | |
| 158 } | |
| 159 | |
| 160 if (num_insn_reservations > 0) | |
| 161 { | |
| 162 /* Output interface for pipeline hazards recognition based on | |
| 163 DFA (deterministic finite state automata. */ | |
| 164 printf ("\n#define INSN_SCHEDULING\n"); | |
| 165 printf ("\n/* DFA based pipeline interface. */"); | |
| 166 printf ("\n#ifndef AUTOMATON_ALTS\n"); | |
| 167 printf ("#define AUTOMATON_ALTS 0\n"); | |
| 168 printf ("#endif\n\n"); | |
| 169 printf ("\n#ifndef AUTOMATON_STATE_ALTS\n"); | |
| 170 printf ("#define AUTOMATON_STATE_ALTS 0\n"); | |
| 171 printf ("#endif\n\n"); | |
| 172 printf ("#ifndef CPU_UNITS_QUERY\n"); | |
| 173 printf ("#define CPU_UNITS_QUERY 0\n"); | |
| 174 printf ("#endif\n\n"); | |
| 175 /* Interface itself: */ | |
| 176 printf ("/* Internal insn code number used by automata. */\n"); | |
| 177 printf ("extern int internal_dfa_insn_code (rtx);\n\n"); | |
| 178 printf ("/* Insn latency time defined in define_insn_reservation. */\n"); | |
| 179 printf ("extern int insn_default_latency (rtx);\n\n"); | |
| 180 printf ("/* Return nonzero if there is a bypass for given insn\n"); | |
| 181 printf (" which is a data producer. */\n"); | |
| 182 printf ("extern int bypass_p (rtx);\n\n"); | |
| 183 printf ("/* Insn latency time on data consumed by the 2nd insn.\n"); | |
| 184 printf (" Use the function if bypass_p returns nonzero for\n"); | |
| 185 printf (" the 1st insn. */\n"); | |
| 186 printf ("extern int insn_latency (rtx, rtx);\n\n"); | |
| 187 printf ("/* Maximal insn latency time possible of all bypasses for this insn.\n"); | |
| 188 printf (" Use the function if bypass_p returns nonzero for\n"); | |
| 189 printf (" the 1st insn. */\n"); | |
| 190 printf ("extern int maximal_insn_latency (rtx);\n\n"); | |
| 191 printf ("\n#if AUTOMATON_ALTS\n"); | |
| 192 printf ("/* The following function returns number of alternative\n"); | |
| 193 printf (" reservations of given insn. It may be used for better\n"); | |
| 194 printf (" insns scheduling heuristics. */\n"); | |
| 195 printf ("extern int insn_alts (rtx);\n\n"); | |
| 196 printf ("#endif\n\n"); | |
| 197 printf ("/* Maximal possible number of insns waiting results being\n"); | |
| 198 printf (" produced by insns whose execution is not finished. */\n"); | |
| 199 printf ("extern const int max_insn_queue_index;\n\n"); | |
| 200 printf ("/* Pointer to data describing current state of DFA. */\n"); | |
| 201 printf ("typedef void *state_t;\n\n"); | |
| 202 printf ("/* Size of the data in bytes. */\n"); | |
| 203 printf ("extern int state_size (void);\n\n"); | |
| 204 printf ("/* Initiate given DFA state, i.e. Set up the state\n"); | |
| 205 printf (" as all functional units were not reserved. */\n"); | |
| 206 printf ("extern void state_reset (state_t);\n"); | |
| 207 printf ("/* The following function returns negative value if given\n"); | |
| 208 printf (" insn can be issued in processor state described by given\n"); | |
| 209 printf (" DFA state. In this case, the DFA state is changed to\n"); | |
| 210 printf (" reflect the current and future reservations by given\n"); | |
| 211 printf (" insn. Otherwise the function returns minimal time\n"); | |
| 212 printf (" delay to issue the insn. This delay may be zero\n"); | |
| 213 printf (" for superscalar or VLIW processors. If the second\n"); | |
| 214 printf (" parameter is NULL the function changes given DFA state\n"); | |
| 215 printf (" as new processor cycle started. */\n"); | |
| 216 printf ("extern int state_transition (state_t, rtx);\n"); | |
| 217 printf ("\n#if AUTOMATON_STATE_ALTS\n"); | |
| 218 printf ("/* The following function returns number of possible\n"); | |
| 219 printf (" alternative reservations of given insn in given\n"); | |
| 220 printf (" DFA state. It may be used for better insns scheduling\n"); | |
| 221 printf (" heuristics. By default the function is defined if\n"); | |
| 222 printf (" macro AUTOMATON_STATE_ALTS is defined because its\n"); | |
| 223 printf (" implementation may require much memory. */\n"); | |
| 224 printf ("extern int state_alts (state_t, rtx);\n"); | |
| 225 printf ("#endif\n\n"); | |
| 226 printf ("extern int min_issue_delay (state_t, rtx);\n"); | |
| 227 printf ("/* The following function returns nonzero if no one insn\n"); | |
| 228 printf (" can be issued in current DFA state. */\n"); | |
| 229 printf ("extern int state_dead_lock_p (state_t);\n"); | |
| 230 printf ("/* The function returns minimal delay of issue of the 2nd\n"); | |
| 231 printf (" insn after issuing the 1st insn in given DFA state.\n"); | |
| 232 printf (" The 1st insn should be issued in given state (i.e.\n"); | |
| 233 printf (" state_transition should return negative value for\n"); | |
| 234 printf (" the insn and the state). Data dependencies between\n"); | |
| 235 printf (" the insns are ignored by the function. */\n"); | |
| 236 printf | |
| 237 ("extern int min_insn_conflict_delay (state_t, rtx, rtx);\n"); | |
| 238 printf ("/* The following function outputs reservations for given\n"); | |
| 239 printf (" insn as they are described in the corresponding\n"); | |
| 240 printf (" define_insn_reservation. */\n"); | |
| 241 printf ("extern void print_reservation (FILE *, rtx);\n"); | |
| 242 printf ("\n#if CPU_UNITS_QUERY\n"); | |
| 243 printf ("/* The following function returns code of functional unit\n"); | |
| 244 printf (" with given name (see define_cpu_unit). */\n"); | |
| 245 printf ("extern int get_cpu_unit_code (const char *);\n"); | |
| 246 printf ("/* The following function returns nonzero if functional\n"); | |
| 247 printf (" unit with given code is currently reserved in given\n"); | |
| 248 printf (" DFA state. */\n"); | |
| 249 printf ("extern int cpu_unit_reservation_p (state_t, int);\n"); | |
| 250 printf ("#endif\n\n"); | |
| 251 printf ("/* The following function returns true if insn\n"); | |
| 252 printf (" has a dfa reservation. */\n"); | |
| 253 printf ("extern bool insn_has_dfa_reservation_p (rtx);\n\n"); | |
| 254 printf ("/* Clean insn code cache. It should be called if there\n"); | |
| 255 printf (" is a chance that condition value in a\n"); | |
| 256 printf (" define_insn_reservation will be changed after\n"); | |
| 257 printf (" last call of dfa_start. */\n"); | |
| 258 printf ("extern void dfa_clean_insn_cache (void);\n\n"); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
259 printf ("extern void dfa_clear_single_insn_cache (rtx);\n\n"); |
| 0 | 260 printf ("/* Initiate and finish work with DFA. They should be\n"); |
| 261 printf (" called as the first and the last interface\n"); | |
| 262 printf (" functions. */\n"); | |
| 263 printf ("extern void dfa_start (void);\n"); | |
| 264 printf ("extern void dfa_finish (void);\n"); | |
| 265 } | |
| 266 else | |
| 267 { | |
| 268 /* Otherwise we do no scheduling, but we need these typedefs | |
| 269 in order to avoid uglifying other code with more ifdefs. */ | |
| 270 printf ("typedef void *state_t;\n\n"); | |
| 271 } | |
| 272 | |
| 273 /* Output flag masks for use by reorg. | |
| 274 | |
| 275 Flags are used to hold branch direction and prediction information | |
| 276 for use by eligible_for_... */ | |
| 277 printf("\n#define ATTR_FLAG_forward\t0x1\n"); | |
| 278 printf("#define ATTR_FLAG_backward\t0x2\n"); | |
| 279 printf("#define ATTR_FLAG_likely\t0x4\n"); | |
| 280 printf("#define ATTR_FLAG_very_likely\t0x8\n"); | |
| 281 printf("#define ATTR_FLAG_unlikely\t0x10\n"); | |
| 282 printf("#define ATTR_FLAG_very_unlikely\t0x20\n"); | |
| 283 | |
| 284 puts("\n#endif /* GCC_INSN_ATTR_H */"); | |
| 285 | |
| 286 if (ferror (stdout) || fflush (stdout) || fclose (stdout)) | |
| 287 return FATAL_EXIT_CODE; | |
| 288 | |
| 289 return SUCCESS_EXIT_CODE; | |
| 290 } |