Mercurial > hg > CbC > CbC_gcc
annotate gcc/integrate.c @ 88:f214c1d5b862
merge 89
| author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Tue, 20 Dec 2011 18:53:46 +0900 |
| parents | f6334be47118 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* Procedure integration for GCC. |
| 2 Copyright (C) 1988, 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, | |
|
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
|
3 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| 0 | 4 Free Software Foundation, Inc. |
| 5 Contributed by Michael Tiemann (tiemann@cygnus.com) | |
| 6 | |
| 7 This file is part of GCC. | |
| 8 | |
| 9 GCC is free software; you can redistribute it and/or modify it under | |
| 10 the terms of the GNU General Public License as published by the Free | |
| 11 Software Foundation; either version 3, or (at your option) any later | |
| 12 version. | |
| 13 | |
| 14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 15 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 17 for more details. | |
| 18 | |
| 19 You should have received a copy of the GNU General Public License | |
| 20 along with GCC; see the file COPYING3. If not see | |
| 21 <http://www.gnu.org/licenses/>. */ | |
| 22 | |
| 23 #include "config.h" | |
| 24 #include "system.h" | |
| 25 #include "coretypes.h" | |
| 26 #include "tm.h" | |
| 27 | |
| 28 #include "rtl.h" | |
| 29 #include "tree.h" | |
| 30 #include "tm_p.h" | |
| 31 #include "regs.h" | |
| 32 #include "flags.h" | |
| 33 #include "debug.h" | |
| 34 #include "insn-config.h" | |
| 35 #include "expr.h" | |
| 36 #include "output.h" | |
| 37 #include "recog.h" | |
| 38 #include "integrate.h" | |
| 39 #include "except.h" | |
| 40 #include "function.h" | |
|
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
|
41 #include "diagnostic-core.h" |
| 0 | 42 #include "intl.h" |
| 43 #include "params.h" | |
| 44 #include "ggc.h" | |
| 45 #include "target.h" | |
| 46 #include "langhooks.h" | |
| 47 #include "tree-pass.h" | |
| 48 #include "df.h" | |
| 49 | |
| 50 /* Round to the next highest integer that meets the alignment. */ | |
| 51 #define CEIL_ROUND(VALUE,ALIGN) (((VALUE) + (ALIGN) - 1) & ~((ALIGN)- 1)) | |
| 52 | |
| 53 | |
| 54 /* Private type used by {get/has}_hard_reg_initial_val. */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
55 typedef struct GTY(()) initial_value_pair { |
| 0 | 56 rtx hard_reg; |
| 57 rtx pseudo; | |
| 58 } initial_value_pair; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
59 typedef struct GTY(()) initial_value_struct { |
| 0 | 60 int num_entries; |
| 61 int max_entries; | |
| 62 initial_value_pair * GTY ((length ("%h.num_entries"))) entries; | |
| 63 } initial_value_struct; | |
| 64 | |
| 65 static void set_block_origin_self (tree); | |
| 66 static void set_block_abstract_flags (tree, int); | |
| 67 | |
| 68 | |
| 69 /* Return false if the function FNDECL cannot be inlined on account of its | |
| 70 attributes, true otherwise. */ | |
| 71 bool | |
| 72 function_attribute_inlinable_p (const_tree fndecl) | |
| 73 { | |
| 74 if (targetm.attribute_table) | |
| 75 { | |
| 76 const_tree a; | |
| 77 | |
| 78 for (a = DECL_ATTRIBUTES (fndecl); a; a = TREE_CHAIN (a)) | |
| 79 { | |
| 80 const_tree name = TREE_PURPOSE (a); | |
| 81 int i; | |
| 82 | |
| 83 for (i = 0; targetm.attribute_table[i].name != NULL; i++) | |
| 84 if (is_attribute_p (targetm.attribute_table[i].name, name)) | |
| 85 return targetm.function_attribute_inlinable_p (fndecl); | |
| 86 } | |
| 87 } | |
| 88 | |
| 89 return true; | |
| 90 } | |
| 91 | |
| 92 /* Given a pointer to some BLOCK node, if the BLOCK_ABSTRACT_ORIGIN for the | |
| 93 given BLOCK node is NULL, set the BLOCK_ABSTRACT_ORIGIN for the node so | |
| 94 that it points to the node itself, thus indicating that the node is its | |
| 95 own (abstract) origin. Additionally, if the BLOCK_ABSTRACT_ORIGIN for | |
| 96 the given node is NULL, recursively descend the decl/block tree which | |
| 97 it is the root of, and for each other ..._DECL or BLOCK node contained | |
| 98 therein whose DECL_ABSTRACT_ORIGINs or BLOCK_ABSTRACT_ORIGINs are also | |
| 99 still NULL, set *their* DECL_ABSTRACT_ORIGIN or BLOCK_ABSTRACT_ORIGIN | |
| 100 values to point to themselves. */ | |
| 101 | |
| 102 static void | |
| 103 set_block_origin_self (tree stmt) | |
| 104 { | |
| 105 if (BLOCK_ABSTRACT_ORIGIN (stmt) == NULL_TREE) | |
| 106 { | |
| 107 BLOCK_ABSTRACT_ORIGIN (stmt) = stmt; | |
| 108 | |
| 109 { | |
| 110 tree local_decl; | |
| 111 | |
| 112 for (local_decl = BLOCK_VARS (stmt); | |
| 113 local_decl != NULL_TREE; | |
|
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
|
114 local_decl = DECL_CHAIN (local_decl)) |
| 0 | 115 set_decl_origin_self (local_decl); /* Potential recursion. */ |
| 116 } | |
| 117 | |
| 118 { | |
| 119 tree subblock; | |
| 120 | |
| 121 for (subblock = BLOCK_SUBBLOCKS (stmt); | |
| 122 subblock != NULL_TREE; | |
| 123 subblock = BLOCK_CHAIN (subblock)) | |
| 124 set_block_origin_self (subblock); /* Recurse. */ | |
| 125 } | |
| 126 } | |
| 127 } | |
| 128 | |
| 129 /* Given a pointer to some ..._DECL node, if the DECL_ABSTRACT_ORIGIN for | |
| 130 the given ..._DECL node is NULL, set the DECL_ABSTRACT_ORIGIN for the | |
| 131 node to so that it points to the node itself, thus indicating that the | |
| 132 node represents its own (abstract) origin. Additionally, if the | |
| 133 DECL_ABSTRACT_ORIGIN for the given node is NULL, recursively descend | |
| 134 the decl/block tree of which the given node is the root of, and for | |
| 135 each other ..._DECL or BLOCK node contained therein whose | |
| 136 DECL_ABSTRACT_ORIGINs or BLOCK_ABSTRACT_ORIGINs are also still NULL, | |
| 137 set *their* DECL_ABSTRACT_ORIGIN or BLOCK_ABSTRACT_ORIGIN values to | |
| 138 point to themselves. */ | |
| 139 | |
| 140 void | |
| 141 set_decl_origin_self (tree decl) | |
| 142 { | |
| 143 if (DECL_ABSTRACT_ORIGIN (decl) == NULL_TREE) | |
| 144 { | |
| 145 DECL_ABSTRACT_ORIGIN (decl) = decl; | |
| 146 if (TREE_CODE (decl) == FUNCTION_DECL) | |
| 147 { | |
| 148 tree arg; | |
| 149 | |
|
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
|
150 for (arg = DECL_ARGUMENTS (decl); arg; arg = DECL_CHAIN (arg)) |
| 0 | 151 DECL_ABSTRACT_ORIGIN (arg) = arg; |
| 152 if (DECL_INITIAL (decl) != NULL_TREE | |
| 153 && DECL_INITIAL (decl) != error_mark_node) | |
| 154 set_block_origin_self (DECL_INITIAL (decl)); | |
| 155 } | |
| 156 } | |
| 157 } | |
| 158 | |
| 159 /* Given a pointer to some BLOCK node, and a boolean value to set the | |
| 160 "abstract" flags to, set that value into the BLOCK_ABSTRACT flag for | |
| 161 the given block, and for all local decls and all local sub-blocks | |
| 162 (recursively) which are contained therein. */ | |
| 163 | |
| 164 static void | |
| 165 set_block_abstract_flags (tree stmt, int setting) | |
| 166 { | |
| 167 tree local_decl; | |
| 168 tree subblock; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
169 unsigned int i; |
| 0 | 170 |
| 171 BLOCK_ABSTRACT (stmt) = setting; | |
| 172 | |
| 173 for (local_decl = BLOCK_VARS (stmt); | |
| 174 local_decl != NULL_TREE; | |
|
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
|
175 local_decl = DECL_CHAIN (local_decl)) |
| 0 | 176 set_decl_abstract_flags (local_decl, setting); |
| 177 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
178 for (i = 0; i < BLOCK_NUM_NONLOCALIZED_VARS (stmt); i++) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
179 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
180 local_decl = BLOCK_NONLOCALIZED_VAR (stmt, i); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
181 if ((TREE_CODE (local_decl) == VAR_DECL && !TREE_STATIC (local_decl)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
182 || TREE_CODE (local_decl) == PARM_DECL) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
183 set_decl_abstract_flags (local_decl, setting); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
184 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
185 |
| 0 | 186 for (subblock = BLOCK_SUBBLOCKS (stmt); |
| 187 subblock != NULL_TREE; | |
| 188 subblock = BLOCK_CHAIN (subblock)) | |
| 189 set_block_abstract_flags (subblock, setting); | |
| 190 } | |
| 191 | |
| 192 /* Given a pointer to some ..._DECL node, and a boolean value to set the | |
| 193 "abstract" flags to, set that value into the DECL_ABSTRACT flag for the | |
| 194 given decl, and (in the case where the decl is a FUNCTION_DECL) also | |
| 195 set the abstract flags for all of the parameters, local vars, local | |
| 196 blocks and sub-blocks (recursively) to the same setting. */ | |
| 197 | |
| 198 void | |
| 199 set_decl_abstract_flags (tree decl, int setting) | |
| 200 { | |
| 201 DECL_ABSTRACT (decl) = setting; | |
| 202 if (TREE_CODE (decl) == FUNCTION_DECL) | |
| 203 { | |
| 204 tree arg; | |
| 205 | |
|
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
|
206 for (arg = DECL_ARGUMENTS (decl); arg; arg = DECL_CHAIN (arg)) |
| 0 | 207 DECL_ABSTRACT (arg) = setting; |
| 208 if (DECL_INITIAL (decl) != NULL_TREE | |
| 209 && DECL_INITIAL (decl) != error_mark_node) | |
| 210 set_block_abstract_flags (DECL_INITIAL (decl), setting); | |
| 211 } | |
| 212 } | |
| 213 | |
| 214 /* Functions to keep track of the values hard regs had at the start of | |
| 215 the function. */ | |
| 216 | |
| 217 rtx | |
| 218 get_hard_reg_initial_reg (rtx reg) | |
| 219 { | |
| 220 struct initial_value_struct *ivs = crtl->hard_reg_initial_vals; | |
| 221 int i; | |
| 222 | |
| 223 if (ivs == 0) | |
| 224 return NULL_RTX; | |
| 225 | |
| 226 for (i = 0; i < ivs->num_entries; i++) | |
| 227 if (rtx_equal_p (ivs->entries[i].pseudo, reg)) | |
| 228 return ivs->entries[i].hard_reg; | |
| 229 | |
| 230 return NULL_RTX; | |
| 231 } | |
| 232 | |
| 233 /* Make sure that there's a pseudo register of mode MODE that stores the | |
| 234 initial value of hard register REGNO. Return an rtx for such a pseudo. */ | |
| 235 | |
| 236 rtx | |
| 237 get_hard_reg_initial_val (enum machine_mode mode, unsigned int regno) | |
| 238 { | |
| 239 struct initial_value_struct *ivs; | |
| 240 rtx rv; | |
| 241 | |
| 242 rv = has_hard_reg_initial_val (mode, regno); | |
| 243 if (rv) | |
| 244 return rv; | |
| 245 | |
| 246 ivs = crtl->hard_reg_initial_vals; | |
| 247 if (ivs == 0) | |
| 248 { | |
|
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
|
249 ivs = ggc_alloc_initial_value_struct (); |
| 0 | 250 ivs->num_entries = 0; |
| 251 ivs->max_entries = 5; | |
|
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
|
252 ivs->entries = ggc_alloc_vec_initial_value_pair (5); |
| 0 | 253 crtl->hard_reg_initial_vals = ivs; |
| 254 } | |
| 255 | |
| 256 if (ivs->num_entries >= ivs->max_entries) | |
| 257 { | |
| 258 ivs->max_entries += 5; | |
| 259 ivs->entries = GGC_RESIZEVEC (initial_value_pair, ivs->entries, | |
| 260 ivs->max_entries); | |
| 261 } | |
| 262 | |
| 263 ivs->entries[ivs->num_entries].hard_reg = gen_rtx_REG (mode, regno); | |
| 264 ivs->entries[ivs->num_entries].pseudo = gen_reg_rtx (mode); | |
| 265 | |
| 266 return ivs->entries[ivs->num_entries++].pseudo; | |
| 267 } | |
| 268 | |
| 269 /* See if get_hard_reg_initial_val has been used to create a pseudo | |
| 270 for the initial value of hard register REGNO in mode MODE. Return | |
| 271 the associated pseudo if so, otherwise return NULL. */ | |
| 272 | |
| 273 rtx | |
| 274 has_hard_reg_initial_val (enum machine_mode mode, unsigned int regno) | |
| 275 { | |
| 276 struct initial_value_struct *ivs; | |
| 277 int i; | |
| 278 | |
| 279 ivs = crtl->hard_reg_initial_vals; | |
| 280 if (ivs != 0) | |
| 281 for (i = 0; i < ivs->num_entries; i++) | |
| 282 if (GET_MODE (ivs->entries[i].hard_reg) == mode | |
| 283 && REGNO (ivs->entries[i].hard_reg) == regno) | |
| 284 return ivs->entries[i].pseudo; | |
| 285 | |
| 286 return NULL_RTX; | |
| 287 } | |
| 288 | |
| 289 unsigned int | |
| 290 emit_initial_value_sets (void) | |
| 291 { | |
| 292 struct initial_value_struct *ivs = crtl->hard_reg_initial_vals; | |
| 293 int i; | |
| 294 rtx seq; | |
| 295 | |
| 296 if (ivs == 0) | |
| 297 return 0; | |
| 298 | |
| 299 start_sequence (); | |
| 300 for (i = 0; i < ivs->num_entries; i++) | |
| 301 emit_move_insn (ivs->entries[i].pseudo, ivs->entries[i].hard_reg); | |
| 302 seq = get_insns (); | |
| 303 end_sequence (); | |
| 304 | |
| 305 emit_insn_at_entry (seq); | |
| 306 return 0; | |
| 307 } | |
| 308 | |
| 309 struct rtl_opt_pass pass_initial_value_sets = | |
| 310 { | |
| 311 { | |
| 312 RTL_PASS, | |
| 313 "initvals", /* name */ | |
| 314 NULL, /* gate */ | |
| 315 emit_initial_value_sets, /* execute */ | |
| 316 NULL, /* sub */ | |
| 317 NULL, /* next */ | |
| 318 0, /* static_pass_number */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
319 TV_NONE, /* tv_id */ |
| 0 | 320 0, /* properties_required */ |
| 321 0, /* properties_provided */ | |
| 322 0, /* properties_destroyed */ | |
| 323 0, /* todo_flags_start */ | |
| 324 TODO_dump_func /* todo_flags_finish */ | |
| 325 } | |
| 326 }; | |
| 327 | |
| 328 /* If the backend knows where to allocate pseudos for hard | |
| 329 register initial values, register these allocations now. */ | |
| 330 void | |
| 331 allocate_initial_values (rtx *reg_equiv_memory_loc) | |
| 332 { | |
| 333 if (targetm.allocate_initial_value) | |
| 334 { | |
| 335 struct initial_value_struct *ivs = crtl->hard_reg_initial_vals; | |
| 336 int i; | |
| 337 | |
| 338 if (ivs == 0) | |
| 339 return; | |
| 340 | |
| 341 for (i = 0; i < ivs->num_entries; i++) | |
| 342 { | |
| 343 int regno = REGNO (ivs->entries[i].pseudo); | |
| 344 rtx x = targetm.allocate_initial_value (ivs->entries[i].hard_reg); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
345 |
| 0 | 346 if (x && REG_N_SETS (REGNO (ivs->entries[i].pseudo)) <= 1) |
| 347 { | |
| 348 if (MEM_P (x)) | |
| 349 reg_equiv_memory_loc[regno] = x; | |
| 350 else | |
| 351 { | |
| 352 basic_block bb; | |
| 353 int new_regno; | |
| 354 | |
| 355 gcc_assert (REG_P (x)); | |
| 356 new_regno = REGNO (x); | |
| 357 reg_renumber[regno] = new_regno; | |
| 358 /* Poke the regno right into regno_reg_rtx so that even | |
| 359 fixed regs are accepted. */ | |
| 360 SET_REGNO (ivs->entries[i].pseudo, new_regno); | |
| 361 /* Update global register liveness information. */ | |
| 362 FOR_EACH_BB (bb) | |
| 363 { | |
| 364 if (REGNO_REG_SET_P(df_get_live_in (bb), regno)) | |
| 365 SET_REGNO_REG_SET (df_get_live_in (bb), new_regno); | |
| 366 if (REGNO_REG_SET_P(df_get_live_out (bb), regno)) | |
| 367 SET_REGNO_REG_SET (df_get_live_out (bb), new_regno); | |
| 368 } | |
| 369 } | |
| 370 } | |
| 371 } | |
| 372 } | |
| 373 } | |
| 374 | |
| 375 #include "gt-integrate.h" |