Mercurial > hg > CbC > CbC_gcc
annotate gcc/gengenrtl.c @ 67:f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
| author | nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Tue, 22 Mar 2011 17:18:12 +0900 |
| parents | b7f97abdc517 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* Generate code to allocate RTL structures. |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2 Copyright (C) 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2007, 2010 |
| 0 | 3 Free Software Foundation, Inc. |
| 4 | |
| 5 This file is part of GCC. | |
| 6 | |
| 7 GCC is free software; you can redistribute it and/or modify it under | |
| 8 the terms of the GNU General Public License as published by the Free | |
| 9 Software Foundation; either version 3, or (at your option) any later | |
| 10 version. | |
| 11 | |
| 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 18 along with GCC; see the file COPYING3. If not see | |
| 19 <http://www.gnu.org/licenses/>. */ | |
| 20 | |
| 21 | |
| 22 #include "bconfig.h" | |
| 23 #include "system.h" | |
| 24 | |
| 25 struct rtx_definition | |
| 26 { | |
| 27 const char *const enumname, *const name, *const format; | |
| 28 }; | |
| 29 | |
| 30 /* rtl.def needs CONST_DOUBLE_FORMAT, but we don't care what | |
| 31 CONST_DOUBLE_FORMAT is because we're not going to be generating | |
| 32 anything for CONST_DOUBLE anyway. */ | |
| 33 #define CONST_DOUBLE_FORMAT "" | |
| 34 | |
| 35 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) { #ENUM, NAME, FORMAT }, | |
| 36 | |
| 37 static const struct rtx_definition defs[] = | |
| 38 { | |
| 39 #include "rtl.def" /* rtl expressions are documented here */ | |
| 40 }; | |
| 41 #define NUM_RTX_CODE ARRAY_SIZE(defs) | |
| 42 | |
| 43 static const char *formats[NUM_RTX_CODE]; | |
| 44 | |
| 45 /* Decode a format letter into a C type string. */ | |
| 46 | |
| 47 static const char * | |
| 48 type_from_format (int c) | |
| 49 { | |
| 50 switch (c) | |
| 51 { | |
| 52 case 'i': | |
| 53 return "int "; | |
| 54 | |
| 55 case 'w': | |
| 56 return "HOST_WIDE_INT "; | |
| 57 | |
| 58 case 's': | |
| 59 return "const char *"; | |
| 60 | |
| 61 case 'e': case 'u': | |
| 62 return "rtx "; | |
| 63 | |
| 64 case 'E': | |
| 65 return "rtvec "; | |
| 66 case 't': | |
| 67 return "union tree_node *"; /* tree - typedef not available */ | |
| 68 case 'B': | |
| 69 return "struct basic_block_def *"; /* basic block - typedef not available */ | |
| 70 default: | |
| 71 gcc_unreachable (); | |
| 72 } | |
| 73 } | |
| 74 | |
| 75 /* Decode a format letter into the proper accessor function. */ | |
| 76 | |
| 77 static const char * | |
| 78 accessor_from_format (int c) | |
| 79 { | |
| 80 switch (c) | |
| 81 { | |
| 82 case 'i': | |
| 83 return "XINT"; | |
| 84 | |
| 85 case 'w': | |
| 86 return "XWINT"; | |
| 87 | |
| 88 case 's': | |
| 89 return "XSTR"; | |
| 90 | |
| 91 case 'e': case 'u': | |
| 92 return "XEXP"; | |
| 93 | |
| 94 case 'E': | |
| 95 return "XVEC"; | |
| 96 | |
| 97 case 't': | |
| 98 return "XTREE"; | |
| 99 | |
| 100 case 'B': | |
| 101 return "XBBDEF"; | |
| 102 | |
| 103 default: | |
| 104 gcc_unreachable (); | |
| 105 } | |
| 106 } | |
| 107 | |
| 108 /* Return nonzero if we should ignore FMT, an RTL format, when making | |
| 109 the list of formats we write routines to create. */ | |
| 110 | |
| 111 static int | |
| 112 special_format (const char *fmt) | |
| 113 { | |
| 114 return (strchr (fmt, '*') != 0 | |
| 115 || strchr (fmt, 'V') != 0 | |
| 116 || strchr (fmt, 'S') != 0 | |
| 117 || strchr (fmt, 'n') != 0); | |
| 118 } | |
| 119 | |
| 120 /* Return nonzero if the RTL code given by index IDX is one that we should | |
| 121 generate a gen_rtx_raw_FOO macro for, not gen_rtx_FOO (because gen_rtx_FOO | |
| 122 is a wrapper in emit-rtl.c). */ | |
| 123 | |
| 124 static int | |
| 125 special_rtx (int idx) | |
| 126 { | |
| 127 return (strcmp (defs[idx].enumname, "CONST_INT") == 0 | |
| 128 || strcmp (defs[idx].enumname, "REG") == 0 | |
| 129 || strcmp (defs[idx].enumname, "SUBREG") == 0 | |
| 130 || strcmp (defs[idx].enumname, "MEM") == 0 | |
| 131 || strcmp (defs[idx].enumname, "CONST_VECTOR") == 0); | |
| 132 } | |
| 133 | |
| 134 /* Return nonzero if the RTL code given by index IDX is one that we should | |
| 135 generate no macro for at all (because gen_rtx_FOO is never used or | |
| 136 cannot have the obvious interface). */ | |
| 137 | |
| 138 static int | |
| 139 excluded_rtx (int idx) | |
| 140 { | |
| 141 return ((strcmp (defs[idx].enumname, "CONST_DOUBLE") == 0) | |
| 142 || (strcmp (defs[idx].enumname, "CONST_FIXED") == 0)); | |
| 143 } | |
| 144 | |
| 145 /* Place a list of all format specifiers we use into the array FORMAT. */ | |
| 146 | |
| 147 static void | |
| 148 find_formats (void) | |
| 149 { | |
| 150 unsigned int i; | |
| 151 | |
| 152 for (i = 0; i < NUM_RTX_CODE; i++) | |
| 153 { | |
| 154 const char **f; | |
| 155 | |
| 156 if (special_format (defs[i].format)) | |
| 157 continue; | |
| 158 | |
| 159 for (f = formats; *f; f++) | |
| 160 if (! strcmp (*f, defs[i].format)) | |
| 161 break; | |
| 162 | |
| 163 if (*f == 0) | |
| 164 *f = defs[i].format; | |
| 165 } | |
| 166 } | |
| 167 | |
| 168 | |
| 169 /* Generate macros to generate RTL of code IDX using the functions we | |
| 170 write. */ | |
| 171 | |
| 172 static void | |
| 173 genmacro (int idx) | |
| 174 { | |
| 175 const char *p; | |
| 176 int i; | |
| 177 | |
| 178 /* We write a macro that defines gen_rtx_RTLCODE to be an equivalent to | |
| 179 gen_rtx_fmt_FORMAT where FORMAT is the RTX_FORMAT of RTLCODE. */ | |
| 180 | |
| 181 if (excluded_rtx (idx)) | |
| 182 /* Don't define a macro for this code. */ | |
| 183 return; | |
| 184 | |
| 185 printf ("#define gen_rtx_%s%s(MODE", | |
| 186 special_rtx (idx) ? "raw_" : "", defs[idx].enumname); | |
| 187 | |
| 188 for (p = defs[idx].format, i = 0; *p != 0; p++) | |
| 189 if (*p != '0') | |
| 190 printf (", ARG%d", i++); | |
| 191 | |
| 192 printf (") \\\n gen_rtx_fmt_%s (%s, (MODE)", | |
| 193 defs[idx].format, defs[idx].enumname); | |
| 194 | |
| 195 for (p = defs[idx].format, i = 0; *p != 0; p++) | |
| 196 if (*p != '0') | |
| 197 printf (", (ARG%d)", i++); | |
| 198 | |
| 199 puts (")"); | |
| 200 } | |
| 201 | |
| 202 /* Generate the code for the function to generate RTL whose | |
| 203 format is FORMAT. */ | |
| 204 | |
| 205 static void | |
| 206 gendef (const char *format) | |
| 207 { | |
| 208 const char *p; | |
| 209 int i, j; | |
| 210 | |
| 211 /* Start by writing the definition of the function name and the types | |
| 212 of the arguments. */ | |
| 213 | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
214 printf ("static inline rtx\ngen_rtx_fmt_%s_stat (RTX_CODE code, enum machine_mode mode", format); |
| 0 | 215 for (p = format, i = 0; *p != 0; p++) |
| 216 if (*p != '0') | |
| 217 printf (",\n\t%sarg%d", type_from_format (*p), i++); | |
| 218 | |
| 219 puts (" MEM_STAT_DECL)"); | |
| 220 | |
| 221 /* Now write out the body of the function itself, which allocates | |
| 222 the memory and initializes it. */ | |
| 223 puts ("{"); | |
| 224 puts (" rtx rt;"); | |
| 225 puts (" rt = rtx_alloc_stat (code PASS_MEM_STAT);\n"); | |
| 226 | |
| 227 puts (" PUT_MODE (rt, mode);"); | |
| 228 | |
| 229 for (p = format, i = j = 0; *p ; ++p, ++i) | |
| 230 if (*p != '0') | |
| 231 printf (" %s (rt, %d) = arg%d;\n", accessor_from_format (*p), i, j++); | |
| 232 else | |
| 233 printf (" X0EXP (rt, %d) = NULL_RTX;\n", i); | |
| 234 | |
| 235 puts ("\n return rt;\n}\n"); | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
236 printf ("#define gen_rtx_fmt_%s(c, m", format); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
237 for (p = format, i = 0; *p != 0; p++) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
238 if (*p != '0') |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
239 printf (", p%i",i++); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
240 printf (")\\\n gen_rtx_fmt_%s_stat (c, m", format); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
241 for (p = format, i = 0; *p != 0; p++) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
242 if (*p != '0') |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
243 printf (", p%i",i++); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
244 printf (" MEM_STAT_INFO)\n\n"); |
| 0 | 245 } |
| 246 | |
| 247 /* Generate the documentation header for files we write. */ | |
| 248 | |
| 249 static void | |
| 250 genlegend (void) | |
| 251 { | |
| 252 puts ("/* Generated automatically by gengenrtl from rtl.def. */\n"); | |
| 253 } | |
| 254 | |
| 255 /* Generate the text of the header file we make, genrtl.h. */ | |
| 256 | |
| 257 static void | |
| 258 genheader (void) | |
| 259 { | |
| 260 unsigned int i; | |
| 261 const char **fmt; | |
| 262 | |
| 263 puts ("#ifndef GCC_GENRTL_H"); | |
| 264 puts ("#define GCC_GENRTL_H\n"); | |
| 265 puts ("#include \"statistics.h\"\n"); | |
| 266 | |
| 267 for (fmt = formats; *fmt; ++fmt) | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
268 gendef (*fmt); |
| 0 | 269 |
| 270 putchar ('\n'); | |
| 271 | |
| 272 for (i = 0; i < NUM_RTX_CODE; i++) | |
| 273 if (! special_format (defs[i].format)) | |
| 274 genmacro (i); | |
| 275 | |
| 276 puts ("\n#endif /* GCC_GENRTL_H */"); | |
| 277 } | |
| 278 | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
279 /* This is the main program. */ |
| 0 | 280 |
| 281 int | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
282 main (void) |
| 0 | 283 { |
| 284 find_formats (); | |
| 285 genlegend (); | |
| 286 | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
287 genheader (); |
| 0 | 288 |
| 289 if (ferror (stdout) || fflush (stdout) || fclose (stdout)) | |
| 290 return FATAL_EXIT_CODE; | |
| 291 | |
| 292 return SUCCESS_EXIT_CODE; | |
| 293 } |