Mercurial > hg > CbC > CbC_gcc
annotate gcc/cselib.c @ 158:494b0b89df80 default tip
...
| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 25 May 2020 18:13:55 +0900 |
| parents | 1830386684a0 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* Common subexpression elimination library for GNU compiler. |
| 145 | 2 Copyright (C) 1987-2020 Free Software Foundation, Inc. |
| 0 | 3 |
| 4 This file is part of GCC. | |
| 5 | |
| 6 GCC is free software; you can redistribute it and/or modify it under | |
| 7 the terms of the GNU General Public License as published by the Free | |
| 8 Software Foundation; either version 3, or (at your option) any later | |
| 9 version. | |
| 10 | |
| 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 for more details. | |
| 15 | |
| 16 You should have received a copy of the GNU General Public License | |
| 17 along with GCC; see the file COPYING3. If not see | |
| 18 <http://www.gnu.org/licenses/>. */ | |
| 19 | |
| 20 #include "config.h" | |
| 21 #include "system.h" | |
| 22 #include "coretypes.h" | |
| 111 | 23 #include "backend.h" |
| 24 #include "target.h" | |
| 0 | 25 #include "rtl.h" |
| 111 | 26 #include "tree.h" |
| 27 #include "df.h" | |
| 28 #include "memmodel.h" | |
| 0 | 29 #include "tm_p.h" |
| 30 #include "regs.h" | |
| 31 #include "emit-rtl.h" | |
| 111 | 32 #include "dumpfile.h" |
| 0 | 33 #include "cselib.h" |
| 145 | 34 #include "function-abi.h" |
| 0 | 35 |
|
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
|
36 /* A list of cselib_val structures. */ |
| 111 | 37 struct elt_list |
| 38 { | |
| 39 struct elt_list *next; | |
| 40 cselib_val *elt; | |
|
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 }; |
|
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
|
42 |
| 0 | 43 static bool cselib_record_memory; |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
44 static bool cselib_preserve_constants; |
| 111 | 45 static bool cselib_any_perm_equivs; |
| 46 static inline void promote_debug_loc (struct elt_loc_list *l); | |
| 0 | 47 static struct elt_list *new_elt_list (struct elt_list *, cselib_val *); |
| 111 | 48 static void new_elt_loc_list (cselib_val *, rtx); |
| 0 | 49 static void unchain_one_value (cselib_val *); |
| 50 static void unchain_one_elt_list (struct elt_list **); | |
| 51 static void unchain_one_elt_loc_list (struct elt_loc_list **); | |
| 52 static void remove_useless_values (void); | |
| 111 | 53 static unsigned int cselib_hash_rtx (rtx, int, machine_mode); |
| 54 static cselib_val *new_cselib_val (unsigned int, machine_mode, rtx); | |
| 0 | 55 static void add_mem_for_addr (cselib_val *, cselib_val *, rtx); |
| 56 static cselib_val *cselib_lookup_mem (rtx, int); | |
| 145 | 57 static void cselib_invalidate_regno (unsigned int, machine_mode); |
| 0 | 58 static void cselib_invalidate_mem (rtx); |
| 59 static void cselib_record_set (rtx, cselib_val *, cselib_val *); | |
| 111 | 60 static void cselib_record_sets (rtx_insn *); |
| 0 | 61 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
62 struct expand_value_data |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
63 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
64 bitmap regs_active; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
65 cselib_expand_callback callback; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
66 void *callback_arg; |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
67 bool dummy; |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
68 }; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
69 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
70 static rtx cselib_expand_value_rtx_1 (rtx, struct expand_value_data *, int); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
71 |
| 0 | 72 /* There are three ways in which cselib can look up an rtx: |
| 73 - for a REG, the reg_values table (which is indexed by regno) is used | |
| 74 - for a MEM, we recursively look up its address and then follow the | |
| 75 addr_list of that value | |
| 76 - for everything else, we compute a hash value and go through the hash | |
| 77 table. Since different rtx's can still have the same hash value, | |
| 78 this involves walking the table entries for a given value and comparing | |
| 79 the locations of the entries with the rtx we are looking up. */ | |
| 80 | |
| 111 | 81 struct cselib_hasher : nofree_ptr_hash <cselib_val> |
| 82 { | |
| 83 struct key { | |
| 84 /* The rtx value and its mode (needed separately for constant | |
| 85 integers). */ | |
| 86 machine_mode mode; | |
| 87 rtx x; | |
| 88 /* The mode of the contaning MEM, if any, otherwise VOIDmode. */ | |
| 89 machine_mode memmode; | |
| 90 }; | |
| 91 typedef key *compare_type; | |
| 92 static inline hashval_t hash (const cselib_val *); | |
| 93 static inline bool equal (const cselib_val *, const key *); | |
| 94 }; | |
| 95 | |
| 96 /* The hash function for our hash table. The value is always computed with | |
| 97 cselib_hash_rtx when adding an element; this function just extracts the | |
| 98 hash value from a cselib_val structure. */ | |
| 99 | |
| 100 inline hashval_t | |
| 101 cselib_hasher::hash (const cselib_val *v) | |
| 102 { | |
| 103 return v->hash; | |
| 104 } | |
| 105 | |
| 106 /* The equality test for our hash table. The first argument V is a table | |
| 107 element (i.e. a cselib_val), while the second arg X is an rtx. We know | |
| 108 that all callers of htab_find_slot_with_hash will wrap CONST_INTs into a | |
| 109 CONST of an appropriate mode. */ | |
| 110 | |
| 111 inline bool | |
| 112 cselib_hasher::equal (const cselib_val *v, const key *x_arg) | |
| 113 { | |
| 114 struct elt_loc_list *l; | |
| 115 rtx x = x_arg->x; | |
| 116 machine_mode mode = x_arg->mode; | |
| 117 machine_mode memmode = x_arg->memmode; | |
| 118 | |
| 119 if (mode != GET_MODE (v->val_rtx)) | |
| 120 return false; | |
| 121 | |
| 122 if (GET_CODE (x) == VALUE) | |
| 123 return x == v->val_rtx; | |
| 124 | |
| 125 /* We don't guarantee that distinct rtx's have different hash values, | |
| 126 so we need to do a comparison. */ | |
| 127 for (l = v->locs; l; l = l->next) | |
| 128 if (rtx_equal_for_cselib_1 (l->loc, x, memmode, 0)) | |
| 129 { | |
| 130 promote_debug_loc (l); | |
| 131 return true; | |
| 132 } | |
| 133 | |
| 134 return false; | |
| 135 } | |
| 136 | |
| 0 | 137 /* A table that enables us to look up elts by their value. */ |
| 111 | 138 static hash_table<cselib_hasher> *cselib_hash_table; |
| 139 | |
| 140 /* A table to hold preserved values. */ | |
| 141 static hash_table<cselib_hasher> *cselib_preserved_hash_table; | |
| 0 | 142 |
| 143 /* This is a global so we don't have to pass this through every function. | |
| 144 It is used in new_elt_loc_list to set SETTING_INSN. */ | |
| 111 | 145 static rtx_insn *cselib_current_insn; |
| 0 | 146 |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
147 /* The unique id that the next create value will take. */ |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
148 static unsigned int next_uid; |
| 0 | 149 |
| 150 /* The number of registers we had when the varrays were last resized. */ | |
| 151 static unsigned int cselib_nregs; | |
| 152 | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
153 /* Count values without known locations, or with only locations that |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
154 wouldn't have been known except for debug insns. Whenever this |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
155 grows too big, we remove these useless values from the table. |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
156 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
157 Counting values with only debug values is a bit tricky. We don't |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
158 want to increment n_useless_values when we create a value for a |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
159 debug insn, for this would get n_useless_values out of sync, but we |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
160 want increment it if all locs in the list that were ever referenced |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
161 in nondebug insns are removed from the list. |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
162 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
163 In the general case, once we do that, we'd have to stop accepting |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
164 nondebug expressions in the loc list, to avoid having two values |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
165 equivalent that, without debug insns, would have been made into |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
166 separate values. However, because debug insns never introduce |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
167 equivalences themselves (no assignments), the only means for |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
168 growing loc lists is through nondebug assignments. If the locs |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
169 also happen to be referenced in debug insns, it will work just fine. |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
170 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
171 A consequence of this is that there's at most one debug-only loc in |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
172 each loc list. If we keep it in the first entry, testing whether |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
173 we have a debug-only loc list takes O(1). |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
174 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
175 Furthermore, since any additional entry in a loc list containing a |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
176 debug loc would have to come from an assignment (nondebug) that |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
177 references both the initial debug loc and the newly-equivalent loc, |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
178 the initial debug loc would be promoted to a nondebug loc, and the |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
179 loc list would not contain debug locs any more. |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
180 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
181 So the only case we have to be careful with in order to keep |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
182 n_useless_values in sync between debug and nondebug compilations is |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
183 to avoid incrementing n_useless_values when removing the single loc |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
184 from a value that turns out to not appear outside debug values. We |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
185 increment n_useless_debug_values instead, and leave such values |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
186 alone until, for other reasons, we garbage-collect useless |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
187 values. */ |
| 0 | 188 static int n_useless_values; |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
189 static int n_useless_debug_values; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
190 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
191 /* Count values whose locs have been taken exclusively from debug |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
192 insns for the entire life of the value. */ |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
193 static int n_debug_values; |
| 0 | 194 |
| 195 /* Number of useless values before we remove them from the hash table. */ | |
| 196 #define MAX_USELESS_VALUES 32 | |
| 197 | |
| 198 /* This table maps from register number to values. It does not | |
| 199 contain pointers to cselib_val structures, but rather elt_lists. | |
| 200 The purpose is to be able to refer to the same register in | |
| 201 different modes. The first element of the list defines the mode in | |
| 202 which the register was set; if the mode is unknown or the value is | |
| 203 no longer valid in that mode, ELT will be NULL for the first | |
| 204 element. */ | |
| 205 static struct elt_list **reg_values; | |
| 206 static unsigned int reg_values_size; | |
| 207 #define REG_VALUES(i) reg_values[i] | |
| 208 | |
| 209 /* The largest number of hard regs used by any entry added to the | |
| 210 REG_VALUES table. Cleared on each cselib_clear_table() invocation. */ | |
| 211 static unsigned int max_value_regs; | |
| 212 | |
| 213 /* Here the set of indices I with REG_VALUES(I) != 0 is saved. This is used | |
| 214 in cselib_clear_table() for fast emptying. */ | |
| 215 static unsigned int *used_regs; | |
| 216 static unsigned int n_used_regs; | |
| 217 | |
| 218 /* We pass this to cselib_invalidate_mem to invalidate all of | |
| 219 memory for a non-const call instruction. */ | |
| 220 static GTY(()) rtx callmem; | |
| 221 | |
| 222 /* Set by discard_useless_locs if it deleted the last location of any | |
| 223 value. */ | |
| 224 static int values_became_useless; | |
| 225 | |
| 226 /* Used as stop element of the containing_mem list so we can check | |
| 227 presence in the list by checking the next pointer. */ | |
| 228 static cselib_val dummy_val; | |
| 229 | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
230 /* If non-NULL, value of the eliminated arg_pointer_rtx or frame_pointer_rtx |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
231 that is constant through the whole function and should never be |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
232 eliminated. */ |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
233 static cselib_val *cfa_base_preserved_val; |
| 111 | 234 static unsigned int cfa_base_preserved_regno = INVALID_REGNUM; |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
235 |
| 0 | 236 /* Used to list all values that contain memory reference. |
| 237 May or may not contain the useless values - the list is compacted | |
| 238 each time memory is invalidated. */ | |
| 239 static cselib_val *first_containing_mem = &dummy_val; | |
| 111 | 240 |
| 241 static object_allocator<elt_list> elt_list_pool ("elt_list"); | |
| 242 static object_allocator<elt_loc_list> elt_loc_list_pool ("elt_loc_list"); | |
| 243 static object_allocator<cselib_val> cselib_val_pool ("cselib_val_list"); | |
| 244 | |
| 245 static pool_allocator value_pool ("value", RTX_CODE_SIZE (VALUE)); | |
| 0 | 246 |
| 247 /* If nonnull, cselib will call this function before freeing useless | |
| 248 VALUEs. A VALUE is deemed useless if its "locs" field is null. */ | |
| 249 void (*cselib_discard_hook) (cselib_val *); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
250 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
251 /* If nonnull, cselib will call this function before recording sets or |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
252 even clobbering outputs of INSN. All the recorded sets will be |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
253 represented in the array sets[n_sets]. new_val_min can be used to |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
254 tell whether values present in sets are introduced by this |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
255 instruction. */ |
| 111 | 256 void (*cselib_record_sets_hook) (rtx_insn *insn, struct cselib_set *sets, |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
257 int n_sets); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
258 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
259 #define PRESERVED_VALUE_P(RTX) \ |
| 111 | 260 (RTL_FLAG_CHECK1 ("PRESERVED_VALUE_P", (RTX), VALUE)->unchanging) |
| 261 | |
| 262 #define SP_BASED_VALUE_P(RTX) \ | |
| 263 (RTL_FLAG_CHECK1 ("SP_BASED_VALUE_P", (RTX), VALUE)->jump) | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
264 |
| 0 | 265 |
| 266 | |
| 267 /* Allocate a struct elt_list and fill in its two elements with the | |
| 268 arguments. */ | |
| 269 | |
| 270 static inline struct elt_list * | |
| 271 new_elt_list (struct elt_list *next, cselib_val *elt) | |
| 272 { | |
| 111 | 273 elt_list *el = elt_list_pool.allocate (); |
| 0 | 274 el->next = next; |
| 275 el->elt = elt; | |
| 276 return el; | |
| 277 } | |
| 278 | |
| 111 | 279 /* Allocate a struct elt_loc_list with LOC and prepend it to VAL's loc |
| 280 list. */ | |
| 281 | |
| 282 static inline void | |
| 283 new_elt_loc_list (cselib_val *val, rtx loc) | |
| 0 | 284 { |
| 111 | 285 struct elt_loc_list *el, *next = val->locs; |
| 286 | |
| 287 gcc_checking_assert (!next || !next->setting_insn | |
| 288 || !DEBUG_INSN_P (next->setting_insn) | |
| 289 || cselib_current_insn == next->setting_insn); | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
290 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
291 /* If we're creating the first loc in a debug insn context, we've |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
292 just created a debug value. Count it. */ |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
293 if (!next && cselib_current_insn && DEBUG_INSN_P (cselib_current_insn)) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
294 n_debug_values++; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
295 |
| 111 | 296 val = canonical_cselib_val (val); |
| 297 next = val->locs; | |
| 298 | |
| 299 if (GET_CODE (loc) == VALUE) | |
| 300 { | |
| 301 loc = canonical_cselib_val (CSELIB_VAL_PTR (loc))->val_rtx; | |
| 302 | |
| 303 gcc_checking_assert (PRESERVED_VALUE_P (loc) | |
| 304 == PRESERVED_VALUE_P (val->val_rtx)); | |
| 305 | |
| 306 if (val->val_rtx == loc) | |
| 307 return; | |
| 308 else if (val->uid > CSELIB_VAL_PTR (loc)->uid) | |
| 309 { | |
| 310 /* Reverse the insertion. */ | |
| 311 new_elt_loc_list (CSELIB_VAL_PTR (loc), val->val_rtx); | |
| 312 return; | |
| 313 } | |
| 314 | |
| 315 gcc_checking_assert (val->uid < CSELIB_VAL_PTR (loc)->uid); | |
| 316 | |
| 317 if (CSELIB_VAL_PTR (loc)->locs) | |
| 318 { | |
| 319 /* Bring all locs from LOC to VAL. */ | |
| 320 for (el = CSELIB_VAL_PTR (loc)->locs; el->next; el = el->next) | |
| 321 { | |
| 322 /* Adjust values that have LOC as canonical so that VAL | |
| 323 becomes their canonical. */ | |
| 324 if (el->loc && GET_CODE (el->loc) == VALUE) | |
| 325 { | |
| 326 gcc_checking_assert (CSELIB_VAL_PTR (el->loc)->locs->loc | |
| 327 == loc); | |
| 328 CSELIB_VAL_PTR (el->loc)->locs->loc = val->val_rtx; | |
| 329 } | |
| 330 } | |
| 331 el->next = val->locs; | |
| 332 next = val->locs = CSELIB_VAL_PTR (loc)->locs; | |
| 333 } | |
| 334 | |
| 335 if (CSELIB_VAL_PTR (loc)->addr_list) | |
| 336 { | |
| 337 /* Bring in addr_list into canonical node. */ | |
| 338 struct elt_list *last = CSELIB_VAL_PTR (loc)->addr_list; | |
| 339 while (last->next) | |
| 340 last = last->next; | |
| 341 last->next = val->addr_list; | |
| 342 val->addr_list = CSELIB_VAL_PTR (loc)->addr_list; | |
| 343 CSELIB_VAL_PTR (loc)->addr_list = NULL; | |
| 344 } | |
| 345 | |
| 346 if (CSELIB_VAL_PTR (loc)->next_containing_mem != NULL | |
| 347 && val->next_containing_mem == NULL) | |
| 348 { | |
| 349 /* Add VAL to the containing_mem list after LOC. LOC will | |
| 350 be removed when we notice it doesn't contain any | |
| 351 MEMs. */ | |
| 352 val->next_containing_mem = CSELIB_VAL_PTR (loc)->next_containing_mem; | |
| 353 CSELIB_VAL_PTR (loc)->next_containing_mem = val; | |
| 354 } | |
| 355 | |
| 356 /* Chain LOC back to VAL. */ | |
| 357 el = elt_loc_list_pool.allocate (); | |
| 358 el->loc = val->val_rtx; | |
| 359 el->setting_insn = cselib_current_insn; | |
| 360 el->next = NULL; | |
| 361 CSELIB_VAL_PTR (loc)->locs = el; | |
| 362 } | |
| 363 | |
| 364 el = elt_loc_list_pool.allocate (); | |
| 365 el->loc = loc; | |
| 366 el->setting_insn = cselib_current_insn; | |
| 367 el->next = next; | |
| 368 val->locs = el; | |
| 0 | 369 } |
| 370 | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
371 /* Promote loc L to a nondebug cselib_current_insn if L is marked as |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
372 originating from a debug insn, maintaining the debug values |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
373 count. */ |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
374 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
375 static inline void |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
376 promote_debug_loc (struct elt_loc_list *l) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
377 { |
| 111 | 378 if (l && l->setting_insn && DEBUG_INSN_P (l->setting_insn) |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
379 && (!cselib_current_insn || !DEBUG_INSN_P (cselib_current_insn))) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
380 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
381 n_debug_values--; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
382 l->setting_insn = cselib_current_insn; |
| 111 | 383 if (cselib_preserve_constants && l->next) |
| 384 { | |
| 385 gcc_assert (l->next->setting_insn | |
| 386 && DEBUG_INSN_P (l->next->setting_insn) | |
| 387 && !l->next->next); | |
| 388 l->next->setting_insn = cselib_current_insn; | |
| 389 } | |
| 390 else | |
| 391 gcc_assert (!l->next); | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
392 } |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
393 } |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
394 |
| 0 | 395 /* The elt_list at *PL is no longer needed. Unchain it and free its |
| 396 storage. */ | |
| 397 | |
| 398 static inline void | |
| 399 unchain_one_elt_list (struct elt_list **pl) | |
| 400 { | |
| 401 struct elt_list *l = *pl; | |
| 402 | |
| 403 *pl = l->next; | |
| 111 | 404 elt_list_pool.remove (l); |
| 0 | 405 } |
| 406 | |
| 407 /* Likewise for elt_loc_lists. */ | |
| 408 | |
| 409 static void | |
| 410 unchain_one_elt_loc_list (struct elt_loc_list **pl) | |
| 411 { | |
| 412 struct elt_loc_list *l = *pl; | |
| 413 | |
| 414 *pl = l->next; | |
| 111 | 415 elt_loc_list_pool.remove (l); |
| 0 | 416 } |
| 417 | |
| 418 /* Likewise for cselib_vals. This also frees the addr_list associated with | |
| 419 V. */ | |
| 420 | |
| 421 static void | |
| 422 unchain_one_value (cselib_val *v) | |
| 423 { | |
| 424 while (v->addr_list) | |
| 425 unchain_one_elt_list (&v->addr_list); | |
| 426 | |
| 111 | 427 cselib_val_pool.remove (v); |
| 0 | 428 } |
| 429 | |
| 430 /* Remove all entries from the hash table. Also used during | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
431 initialization. */ |
| 0 | 432 |
| 433 void | |
| 434 cselib_clear_table (void) | |
| 435 { | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
436 cselib_reset_table (1); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
437 } |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
438 |
| 111 | 439 /* Return TRUE if V is a constant, a function invariant or a VALUE |
| 440 equivalence; FALSE otherwise. */ | |
| 441 | |
| 442 static bool | |
| 443 invariant_or_equiv_p (cselib_val *v) | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
444 { |
| 111 | 445 struct elt_loc_list *l; |
| 446 | |
| 447 if (v == cfa_base_preserved_val) | |
| 448 return true; | |
| 449 | |
| 450 /* Keep VALUE equivalences around. */ | |
| 451 for (l = v->locs; l; l = l->next) | |
| 452 if (GET_CODE (l->loc) == VALUE) | |
| 453 return true; | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
454 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
455 if (v->locs != NULL |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
456 && v->locs->next == NULL) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
457 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
458 if (CONSTANT_P (v->locs->loc) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
459 && (GET_CODE (v->locs->loc) != CONST |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
460 || !references_value_p (v->locs->loc, 0))) |
| 111 | 461 return true; |
| 462 /* Although a debug expr may be bound to different expressions, | |
| 463 we can preserve it as if it was constant, to get unification | |
| 464 and proper merging within var-tracking. */ | |
| 465 if (GET_CODE (v->locs->loc) == DEBUG_EXPR | |
| 466 || GET_CODE (v->locs->loc) == DEBUG_IMPLICIT_PTR | |
| 467 || GET_CODE (v->locs->loc) == ENTRY_VALUE | |
| 468 || GET_CODE (v->locs->loc) == DEBUG_PARAMETER_REF) | |
| 469 return true; | |
| 470 | |
| 471 /* (plus (value V) (const_int C)) is invariant iff V is invariant. */ | |
| 472 if (GET_CODE (v->locs->loc) == PLUS | |
| 473 && CONST_INT_P (XEXP (v->locs->loc, 1)) | |
| 474 && GET_CODE (XEXP (v->locs->loc, 0)) == VALUE | |
| 475 && invariant_or_equiv_p (CSELIB_VAL_PTR (XEXP (v->locs->loc, 0)))) | |
| 476 return true; | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
477 } |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
478 |
| 111 | 479 return false; |
| 480 } | |
| 481 | |
| 482 /* Remove from hash table all VALUEs except constants, function | |
| 483 invariants and VALUE equivalences. */ | |
| 484 | |
| 485 int | |
| 486 preserve_constants_and_equivs (cselib_val **x, void *info ATTRIBUTE_UNUSED) | |
| 487 { | |
| 488 cselib_val *v = *x; | |
| 489 | |
| 490 if (invariant_or_equiv_p (v)) | |
| 491 { | |
| 492 cselib_hasher::key lookup = { | |
| 493 GET_MODE (v->val_rtx), v->val_rtx, VOIDmode | |
| 494 }; | |
| 495 cselib_val **slot | |
| 496 = cselib_preserved_hash_table->find_slot_with_hash (&lookup, | |
| 497 v->hash, INSERT); | |
| 498 gcc_assert (!*slot); | |
| 499 *slot = v; | |
| 500 } | |
| 501 | |
| 502 cselib_hash_table->clear_slot (x); | |
| 503 | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
504 return 1; |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
505 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
506 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
507 /* Remove all entries from the hash table, arranging for the next |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
508 value to be numbered NUM. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
509 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
510 void |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
511 cselib_reset_table (unsigned int num) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
512 { |
| 0 | 513 unsigned int i; |
| 514 | |
| 515 max_value_regs = 0; | |
| 516 | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
517 if (cfa_base_preserved_val) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
518 { |
|
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
|
519 unsigned int regno = cfa_base_preserved_regno; |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
520 unsigned int new_used_regs = 0; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
521 for (i = 0; i < n_used_regs; i++) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
522 if (used_regs[i] == regno) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
523 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
524 new_used_regs = 1; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
525 continue; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
526 } |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
527 else |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
528 REG_VALUES (used_regs[i]) = 0; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
529 gcc_assert (new_used_regs == 1); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
530 n_used_regs = new_used_regs; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
531 used_regs[0] = regno; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
532 max_value_regs |
| 111 | 533 = hard_regno_nregs (regno, |
| 534 GET_MODE (cfa_base_preserved_val->locs->loc)); | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
535 } |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
536 else |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
537 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
538 for (i = 0; i < n_used_regs; i++) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
539 REG_VALUES (used_regs[i]) = 0; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
540 n_used_regs = 0; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
541 } |
| 0 | 542 |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
543 if (cselib_preserve_constants) |
| 111 | 544 cselib_hash_table->traverse <void *, preserve_constants_and_equivs> |
| 545 (NULL); | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
546 else |
| 111 | 547 { |
| 548 cselib_hash_table->empty (); | |
| 549 gcc_checking_assert (!cselib_any_perm_equivs); | |
| 550 } | |
| 0 | 551 |
| 552 n_useless_values = 0; | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
553 n_useless_debug_values = 0; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
554 n_debug_values = 0; |
| 0 | 555 |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
556 next_uid = num; |
| 0 | 557 |
| 558 first_containing_mem = &dummy_val; | |
| 559 } | |
| 560 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
561 /* Return the number of the next value that will be generated. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
562 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
563 unsigned int |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
564 cselib_get_next_uid (void) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
565 { |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
566 return next_uid; |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
567 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
568 |
|
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
|
569 /* Search for X, whose hashcode is HASH, in CSELIB_HASH_TABLE, |
|
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
|
570 INSERTing if requested. When X is part of the address of a MEM, |
| 111 | 571 MEMMODE should specify the mode of the MEM. */ |
| 572 | |
| 573 static cselib_val ** | |
| 574 cselib_find_slot (machine_mode mode, rtx x, hashval_t hash, | |
| 575 enum insert_option insert, machine_mode memmode) | |
| 0 | 576 { |
| 111 | 577 cselib_val **slot = NULL; |
| 578 cselib_hasher::key lookup = { mode, x, memmode }; | |
| 579 if (cselib_preserve_constants) | |
| 580 slot = cselib_preserved_hash_table->find_slot_with_hash (&lookup, hash, | |
| 581 NO_INSERT); | |
| 582 if (!slot) | |
| 583 slot = cselib_hash_table->find_slot_with_hash (&lookup, hash, insert); | |
| 584 return slot; | |
| 0 | 585 } |
| 586 | |
| 587 /* Return true if X contains a VALUE rtx. If ONLY_USELESS is set, we | |
| 588 only return true for values which point to a cselib_val whose value | |
| 589 element has been set to zero, which implies the cselib_val will be | |
| 590 removed. */ | |
| 591 | |
| 592 int | |
| 593 references_value_p (const_rtx x, int only_useless) | |
| 594 { | |
| 595 const enum rtx_code code = GET_CODE (x); | |
| 596 const char *fmt = GET_RTX_FORMAT (code); | |
| 597 int i, j; | |
| 598 | |
| 599 if (GET_CODE (x) == VALUE | |
| 111 | 600 && (! only_useless || |
| 601 (CSELIB_VAL_PTR (x)->locs == 0 && !PRESERVED_VALUE_P (x)))) | |
| 0 | 602 return 1; |
| 603 | |
| 604 for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--) | |
| 605 { | |
| 606 if (fmt[i] == 'e' && references_value_p (XEXP (x, i), only_useless)) | |
| 607 return 1; | |
| 608 else if (fmt[i] == 'E') | |
| 609 for (j = 0; j < XVECLEN (x, i); j++) | |
| 610 if (references_value_p (XVECEXP (x, i, j), only_useless)) | |
| 611 return 1; | |
| 612 } | |
| 613 | |
| 614 return 0; | |
| 615 } | |
| 616 | |
| 617 /* For all locations found in X, delete locations that reference useless | |
| 618 values (i.e. values without any location). Called through | |
| 619 htab_traverse. */ | |
| 620 | |
| 111 | 621 int |
| 622 discard_useless_locs (cselib_val **x, void *info ATTRIBUTE_UNUSED) | |
| 0 | 623 { |
| 111 | 624 cselib_val *v = *x; |
| 0 | 625 struct elt_loc_list **p = &v->locs; |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
626 bool had_locs = v->locs != NULL; |
| 111 | 627 rtx_insn *setting_insn = v->locs ? v->locs->setting_insn : NULL; |
| 0 | 628 |
| 629 while (*p) | |
| 630 { | |
| 631 if (references_value_p ((*p)->loc, 1)) | |
| 632 unchain_one_elt_loc_list (p); | |
| 633 else | |
| 634 p = &(*p)->next; | |
| 635 } | |
| 636 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
637 if (had_locs && v->locs == 0 && !PRESERVED_VALUE_P (v->val_rtx)) |
| 0 | 638 { |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
639 if (setting_insn && DEBUG_INSN_P (setting_insn)) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
640 n_useless_debug_values++; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
641 else |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
642 n_useless_values++; |
| 0 | 643 values_became_useless = 1; |
| 644 } | |
| 645 return 1; | |
| 646 } | |
| 647 | |
| 648 /* If X is a value with no locations, remove it from the hashtable. */ | |
| 649 | |
| 111 | 650 int |
| 651 discard_useless_values (cselib_val **x, void *info ATTRIBUTE_UNUSED) | |
| 0 | 652 { |
| 111 | 653 cselib_val *v = *x; |
| 0 | 654 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
655 if (v->locs == 0 && !PRESERVED_VALUE_P (v->val_rtx)) |
| 0 | 656 { |
| 657 if (cselib_discard_hook) | |
| 658 cselib_discard_hook (v); | |
| 659 | |
| 660 CSELIB_VAL_PTR (v->val_rtx) = NULL; | |
| 111 | 661 cselib_hash_table->clear_slot (x); |
| 0 | 662 unchain_one_value (v); |
| 663 n_useless_values--; | |
| 664 } | |
| 665 | |
| 666 return 1; | |
| 667 } | |
| 668 | |
| 669 /* Clean out useless values (i.e. those which no longer have locations | |
| 670 associated with them) from the hash table. */ | |
| 671 | |
| 672 static void | |
| 673 remove_useless_values (void) | |
| 674 { | |
| 675 cselib_val **p, *v; | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
676 |
| 0 | 677 /* First pass: eliminate locations that reference the value. That in |
| 678 turn can make more values useless. */ | |
| 679 do | |
| 680 { | |
| 681 values_became_useless = 0; | |
| 111 | 682 cselib_hash_table->traverse <void *, discard_useless_locs> (NULL); |
| 0 | 683 } |
| 684 while (values_became_useless); | |
| 685 | |
| 686 /* Second pass: actually remove the values. */ | |
| 687 | |
| 688 p = &first_containing_mem; | |
| 689 for (v = *p; v != &dummy_val; v = v->next_containing_mem) | |
| 111 | 690 if (v->locs && v == canonical_cselib_val (v)) |
| 0 | 691 { |
| 692 *p = v; | |
| 693 p = &(*p)->next_containing_mem; | |
| 694 } | |
| 695 *p = &dummy_val; | |
| 696 | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
697 n_useless_values += n_useless_debug_values; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
698 n_debug_values -= n_useless_debug_values; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
699 n_useless_debug_values = 0; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
700 |
| 111 | 701 cselib_hash_table->traverse <void *, discard_useless_values> (NULL); |
| 0 | 702 |
| 703 gcc_assert (!n_useless_values); | |
| 704 } | |
| 705 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
706 /* Arrange for a value to not be removed from the hash table even if |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
707 it becomes useless. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
708 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
709 void |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
710 cselib_preserve_value (cselib_val *v) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
711 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
712 PRESERVED_VALUE_P (v->val_rtx) = 1; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
713 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
714 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
715 /* Test whether a value is preserved. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
716 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
717 bool |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
718 cselib_preserved_value_p (cselib_val *v) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
719 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
720 return PRESERVED_VALUE_P (v->val_rtx); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
721 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
722 |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
723 /* Arrange for a REG value to be assumed constant through the whole function, |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
724 never invalidated and preserved across cselib_reset_table calls. */ |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
725 |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
726 void |
|
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
|
727 cselib_preserve_cfa_base_value (cselib_val *v, unsigned int regno) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
728 { |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
729 if (cselib_preserve_constants |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
730 && v->locs |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
731 && REG_P (v->locs->loc)) |
|
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
|
732 { |
|
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
|
733 cfa_base_preserved_val = v; |
|
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
|
734 cfa_base_preserved_regno = regno; |
|
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
|
735 } |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
736 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
737 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
738 /* Clean all non-constant expressions in the hash table, but retain |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
739 their values. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
740 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
741 void |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
742 cselib_preserve_only_values (void) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
743 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
744 int i; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
745 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
746 for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
747 cselib_invalidate_regno (i, reg_raw_mode[i]); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
748 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
749 cselib_invalidate_mem (callmem); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
750 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
751 remove_useless_values (); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
752 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
753 gcc_assert (first_containing_mem == &dummy_val); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
754 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
755 |
| 111 | 756 /* Arrange for a value to be marked as based on stack pointer |
| 757 for find_base_term purposes. */ | |
| 758 | |
| 759 void | |
| 760 cselib_set_value_sp_based (cselib_val *v) | |
| 761 { | |
| 762 SP_BASED_VALUE_P (v->val_rtx) = 1; | |
| 763 } | |
| 764 | |
| 765 /* Test whether a value is based on stack pointer for | |
| 766 find_base_term purposes. */ | |
| 767 | |
| 768 bool | |
| 769 cselib_sp_based_value_p (cselib_val *v) | |
| 770 { | |
| 771 return SP_BASED_VALUE_P (v->val_rtx); | |
| 772 } | |
| 773 | |
| 0 | 774 /* Return the mode in which a register was last set. If X is not a |
| 775 register, return its mode. If the mode in which the register was | |
| 776 set is not known, or the value was already clobbered, return | |
| 777 VOIDmode. */ | |
| 778 | |
| 111 | 779 machine_mode |
| 0 | 780 cselib_reg_set_mode (const_rtx x) |
| 781 { | |
| 782 if (!REG_P (x)) | |
| 783 return GET_MODE (x); | |
| 784 | |
| 785 if (REG_VALUES (REGNO (x)) == NULL | |
| 786 || REG_VALUES (REGNO (x))->elt == NULL) | |
| 787 return VOIDmode; | |
| 788 | |
| 789 return GET_MODE (REG_VALUES (REGNO (x))->elt->val_rtx); | |
| 790 } | |
| 791 | |
|
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
|
792 /* If x is a PLUS or an autoinc operation, expand the operation, |
|
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
|
793 storing the offset, if any, in *OFF. */ |
|
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
|
794 |
|
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
|
795 static rtx |
| 111 | 796 autoinc_split (rtx x, rtx *off, machine_mode memmode) |
|
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
|
797 { |
|
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
|
798 switch (GET_CODE (x)) |
|
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
|
799 { |
|
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
|
800 case PLUS: |
|
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
|
801 *off = XEXP (x, 1); |
|
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
|
802 return XEXP (x, 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
|
803 |
|
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
|
804 case PRE_DEC: |
|
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
|
805 if (memmode == VOIDmode) |
|
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
|
806 return x; |
|
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
|
807 |
| 131 | 808 *off = gen_int_mode (-GET_MODE_SIZE (memmode), GET_MODE (x)); |
|
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
|
809 return XEXP (x, 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
|
810 |
|
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
|
811 case PRE_INC: |
|
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
|
812 if (memmode == VOIDmode) |
|
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
|
813 return x; |
|
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
|
814 |
| 131 | 815 *off = gen_int_mode (GET_MODE_SIZE (memmode), GET_MODE (x)); |
|
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
|
816 return XEXP (x, 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
|
817 |
|
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
|
818 case PRE_MODIFY: |
|
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
|
819 return XEXP (x, 1); |
|
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
|
820 |
|
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
|
821 case POST_DEC: |
|
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
|
822 case POST_INC: |
|
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
|
823 case POST_MODIFY: |
|
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
|
824 return XEXP (x, 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
|
825 |
|
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
|
826 default: |
|
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
|
827 return x; |
|
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
|
828 } |
|
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
|
829 } |
|
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
|
830 |
|
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
|
831 /* Return nonzero if we can prove that X and Y contain the same value, |
|
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
|
832 taking our gathered information into account. MEMMODE holds the |
|
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
|
833 mode of the enclosing MEM, if any, as required to deal with autoinc |
|
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
|
834 addressing modes. If X and Y are not (known to be) part of |
|
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
|
835 addresses, MEMMODE should be VOIDmode. */ |
|
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
|
836 |
| 111 | 837 int |
| 838 rtx_equal_for_cselib_1 (rtx x, rtx y, machine_mode memmode, int depth) | |
|
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
|
839 { |
| 0 | 840 enum rtx_code code; |
| 841 const char *fmt; | |
| 842 int i; | |
| 843 | |
| 844 if (REG_P (x) || MEM_P (x)) | |
| 845 { | |
|
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
|
846 cselib_val *e = cselib_lookup (x, GET_MODE (x), 0, memmode); |
| 0 | 847 |
| 848 if (e) | |
| 849 x = e->val_rtx; | |
| 850 } | |
| 851 | |
| 852 if (REG_P (y) || MEM_P (y)) | |
| 853 { | |
|
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
|
854 cselib_val *e = cselib_lookup (y, GET_MODE (y), 0, memmode); |
| 0 | 855 |
| 856 if (e) | |
| 857 y = e->val_rtx; | |
| 858 } | |
| 859 | |
| 860 if (x == y) | |
| 861 return 1; | |
| 862 | |
| 863 if (GET_CODE (x) == VALUE) | |
| 864 { | |
| 111 | 865 cselib_val *e = canonical_cselib_val (CSELIB_VAL_PTR (x)); |
| 0 | 866 struct elt_loc_list *l; |
| 867 | |
| 111 | 868 if (GET_CODE (y) == VALUE) |
| 869 return e == canonical_cselib_val (CSELIB_VAL_PTR (y)); | |
| 870 | |
| 871 if (depth == 128) | |
| 872 return 0; | |
| 873 | |
| 0 | 874 for (l = e->locs; l; l = l->next) |
| 875 { | |
| 876 rtx t = l->loc; | |
| 877 | |
| 111 | 878 /* Avoid infinite recursion. We know we have the canonical |
| 879 value, so we can just skip any values in the equivalence | |
| 880 list. */ | |
| 881 if (REG_P (t) || MEM_P (t) || GET_CODE (t) == VALUE) | |
| 0 | 882 continue; |
| 111 | 883 else if (rtx_equal_for_cselib_1 (t, y, memmode, depth + 1)) |
| 0 | 884 return 1; |
| 885 } | |
| 886 | |
| 887 return 0; | |
| 888 } | |
| 111 | 889 else if (GET_CODE (y) == VALUE) |
| 0 | 890 { |
| 111 | 891 cselib_val *e = canonical_cselib_val (CSELIB_VAL_PTR (y)); |
| 0 | 892 struct elt_loc_list *l; |
| 893 | |
| 111 | 894 if (depth == 128) |
| 895 return 0; | |
| 896 | |
| 0 | 897 for (l = e->locs; l; l = l->next) |
| 898 { | |
| 899 rtx t = l->loc; | |
| 900 | |
| 111 | 901 if (REG_P (t) || MEM_P (t) || GET_CODE (t) == VALUE) |
| 0 | 902 continue; |
| 111 | 903 else if (rtx_equal_for_cselib_1 (x, t, memmode, depth + 1)) |
| 0 | 904 return 1; |
| 905 } | |
| 906 | |
| 907 return 0; | |
| 908 } | |
| 909 | |
|
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
|
910 if (GET_MODE (x) != GET_MODE (y)) |
| 0 | 911 return 0; |
| 912 | |
|
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
|
913 if (GET_CODE (x) != GET_CODE (y)) |
|
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
|
914 { |
|
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
|
915 rtx xorig = x, yorig = y; |
|
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
|
916 rtx xoff = NULL, yoff = NULL; |
|
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
|
917 |
|
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
|
918 x = autoinc_split (x, &xoff, memmode); |
|
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
|
919 y = autoinc_split (y, &yoff, memmode); |
|
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
|
920 |
|
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
|
921 if (!xoff != !yoff) |
|
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
|
922 return 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
|
923 |
| 111 | 924 if (xoff && !rtx_equal_for_cselib_1 (xoff, yoff, memmode, depth)) |
|
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
|
925 return 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
|
926 |
|
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
|
927 /* Don't recurse if nothing changed. */ |
|
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
|
928 if (x != xorig || y != yorig) |
| 111 | 929 return rtx_equal_for_cselib_1 (x, y, memmode, depth); |
|
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
|
930 |
|
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
|
931 return 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
|
932 } |
|
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
|
933 |
| 0 | 934 /* These won't be handled correctly by the code below. */ |
| 935 switch (GET_CODE (x)) | |
| 936 { | |
| 111 | 937 CASE_CONST_UNIQUE: |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
938 case DEBUG_EXPR: |
| 0 | 939 return 0; |
| 940 | |
|
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
|
941 case DEBUG_IMPLICIT_PTR: |
|
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
|
942 return DEBUG_IMPLICIT_PTR_DECL (x) |
|
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
|
943 == DEBUG_IMPLICIT_PTR_DECL (y); |
|
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
|
944 |
| 111 | 945 case DEBUG_PARAMETER_REF: |
| 946 return DEBUG_PARAMETER_REF_DECL (x) | |
| 947 == DEBUG_PARAMETER_REF_DECL (y); | |
| 948 | |
| 949 case ENTRY_VALUE: | |
| 950 /* ENTRY_VALUEs are function invariant, it is thus undesirable to | |
| 951 use rtx_equal_for_cselib_1 to compare the operands. */ | |
| 952 return rtx_equal_p (ENTRY_VALUE_EXP (x), ENTRY_VALUE_EXP (y)); | |
| 953 | |
| 0 | 954 case LABEL_REF: |
| 111 | 955 return label_ref_label (x) == label_ref_label (y); |
| 956 | |
| 957 case REG: | |
| 958 return REGNO (x) == REGNO (y); | |
| 0 | 959 |
|
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
|
960 case MEM: |
|
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
|
961 /* We have to compare any autoinc operations in the addresses |
|
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
|
962 using this MEM's mode. */ |
| 111 | 963 return rtx_equal_for_cselib_1 (XEXP (x, 0), XEXP (y, 0), GET_MODE (x), |
| 964 depth); | |
|
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
|
965 |
| 0 | 966 default: |
| 967 break; | |
| 968 } | |
| 969 | |
| 970 code = GET_CODE (x); | |
| 971 fmt = GET_RTX_FORMAT (code); | |
| 972 | |
| 973 for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--) | |
| 974 { | |
| 975 int j; | |
| 976 | |
| 977 switch (fmt[i]) | |
| 978 { | |
| 979 case 'w': | |
| 980 if (XWINT (x, i) != XWINT (y, i)) | |
| 981 return 0; | |
| 982 break; | |
| 983 | |
| 984 case 'n': | |
| 985 case 'i': | |
| 986 if (XINT (x, i) != XINT (y, i)) | |
| 987 return 0; | |
| 988 break; | |
| 989 | |
| 131 | 990 case 'p': |
| 991 if (maybe_ne (SUBREG_BYTE (x), SUBREG_BYTE (y))) | |
| 992 return 0; | |
| 993 break; | |
| 994 | |
| 0 | 995 case 'V': |
| 996 case 'E': | |
| 997 /* Two vectors must have the same length. */ | |
| 998 if (XVECLEN (x, i) != XVECLEN (y, i)) | |
| 999 return 0; | |
| 1000 | |
| 1001 /* And the corresponding elements must match. */ | |
| 1002 for (j = 0; j < XVECLEN (x, i); j++) | |
|
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
|
1003 if (! rtx_equal_for_cselib_1 (XVECEXP (x, i, j), |
| 111 | 1004 XVECEXP (y, i, j), memmode, depth)) |
| 0 | 1005 return 0; |
| 1006 break; | |
| 1007 | |
| 1008 case 'e': | |
| 1009 if (i == 1 | |
| 1010 && targetm.commutative_p (x, UNKNOWN) | |
| 111 | 1011 && rtx_equal_for_cselib_1 (XEXP (x, 1), XEXP (y, 0), memmode, |
| 1012 depth) | |
| 1013 && rtx_equal_for_cselib_1 (XEXP (x, 0), XEXP (y, 1), memmode, | |
| 1014 depth)) | |
| 0 | 1015 return 1; |
| 111 | 1016 if (! rtx_equal_for_cselib_1 (XEXP (x, i), XEXP (y, i), memmode, |
| 1017 depth)) | |
| 0 | 1018 return 0; |
| 1019 break; | |
| 1020 | |
| 1021 case 'S': | |
| 1022 case 's': | |
| 1023 if (strcmp (XSTR (x, i), XSTR (y, i))) | |
| 1024 return 0; | |
| 1025 break; | |
| 1026 | |
| 1027 case 'u': | |
| 1028 /* These are just backpointers, so they don't matter. */ | |
| 1029 break; | |
| 1030 | |
| 1031 case '0': | |
| 1032 case 't': | |
| 1033 break; | |
| 1034 | |
| 1035 /* It is believed that rtx's at this level will never | |
| 1036 contain anything but integers and other rtx's, | |
| 1037 except for within LABEL_REFs and SYMBOL_REFs. */ | |
| 1038 default: | |
| 1039 gcc_unreachable (); | |
| 1040 } | |
| 1041 } | |
| 1042 return 1; | |
| 1043 } | |
| 1044 | |
| 1045 /* Hash an rtx. Return 0 if we couldn't hash the rtx. | |
| 1046 For registers and memory locations, we look up their cselib_val structure | |
| 1047 and return its VALUE element. | |
| 1048 Possible reasons for return 0 are: the object is volatile, or we couldn't | |
| 1049 find a register or memory location in the table and CREATE is zero. If | |
| 1050 CREATE is nonzero, table elts are created for regs and mem. | |
| 1051 N.B. this hash function returns the same hash value for RTXes that | |
| 1052 differ only in the order of operands, thus it is suitable for comparisons | |
| 1053 that take commutativity into account. | |
| 1054 If we wanted to also support associative rules, we'd have to use a different | |
| 1055 strategy to avoid returning spurious 0, e.g. return ~(~0U >> 1) . | |
|
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
|
1056 MEMMODE indicates the mode of an enclosing MEM, and it's only |
|
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
|
1057 used to compute autoinc values. |
| 0 | 1058 We used to have a MODE argument for hashing for CONST_INTs, but that |
| 1059 didn't make sense, since it caused spurious hash differences between | |
| 1060 (set (reg:SI 1) (const_int)) | |
| 1061 (plus:SI (reg:SI 2) (reg:SI 1)) | |
| 1062 and | |
| 1063 (plus:SI (reg:SI 2) (const_int)) | |
| 1064 If the mode is important in any context, it must be checked specifically | |
| 1065 in a comparison anyway, since relying on hash differences is unsafe. */ | |
| 1066 | |
| 1067 static unsigned int | |
| 111 | 1068 cselib_hash_rtx (rtx x, int create, machine_mode memmode) |
| 0 | 1069 { |
| 1070 cselib_val *e; | |
| 131 | 1071 poly_int64 offset; |
| 0 | 1072 int i, j; |
| 1073 enum rtx_code code; | |
| 1074 const char *fmt; | |
| 1075 unsigned int hash = 0; | |
| 1076 | |
| 1077 code = GET_CODE (x); | |
| 1078 hash += (unsigned) code + (unsigned) GET_MODE (x); | |
| 1079 | |
| 1080 switch (code) | |
| 1081 { | |
| 111 | 1082 case VALUE: |
| 1083 e = CSELIB_VAL_PTR (x); | |
| 1084 return e->hash; | |
| 1085 | |
| 0 | 1086 case MEM: |
| 1087 case REG: | |
|
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
|
1088 e = cselib_lookup (x, GET_MODE (x), create, memmode); |
| 0 | 1089 if (! e) |
| 1090 return 0; | |
| 1091 | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1092 return e->hash; |
| 0 | 1093 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1094 case DEBUG_EXPR: |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1095 hash += ((unsigned) DEBUG_EXPR << 7) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1096 + DEBUG_TEMP_UID (DEBUG_EXPR_TREE_DECL (x)); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1097 return hash ? hash : (unsigned int) DEBUG_EXPR; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1098 |
|
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
|
1099 case DEBUG_IMPLICIT_PTR: |
|
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
|
1100 hash += ((unsigned) DEBUG_IMPLICIT_PTR << 7) |
|
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
|
1101 + DECL_UID (DEBUG_IMPLICIT_PTR_DECL (x)); |
|
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
|
1102 return hash ? hash : (unsigned int) DEBUG_IMPLICIT_PTR; |
|
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
|
1103 |
| 111 | 1104 case DEBUG_PARAMETER_REF: |
| 1105 hash += ((unsigned) DEBUG_PARAMETER_REF << 7) | |
| 1106 + DECL_UID (DEBUG_PARAMETER_REF_DECL (x)); | |
| 1107 return hash ? hash : (unsigned int) DEBUG_PARAMETER_REF; | |
| 1108 | |
| 1109 case ENTRY_VALUE: | |
| 1110 /* ENTRY_VALUEs are function invariant, thus try to avoid | |
| 1111 recursing on argument if ENTRY_VALUE is one of the | |
| 1112 forms emitted by expand_debug_expr, otherwise | |
| 1113 ENTRY_VALUE hash would depend on the current value | |
| 1114 in some register or memory. */ | |
| 1115 if (REG_P (ENTRY_VALUE_EXP (x))) | |
| 1116 hash += (unsigned int) REG | |
| 1117 + (unsigned int) GET_MODE (ENTRY_VALUE_EXP (x)) | |
| 1118 + (unsigned int) REGNO (ENTRY_VALUE_EXP (x)); | |
| 1119 else if (MEM_P (ENTRY_VALUE_EXP (x)) | |
| 1120 && REG_P (XEXP (ENTRY_VALUE_EXP (x), 0))) | |
| 1121 hash += (unsigned int) MEM | |
| 1122 + (unsigned int) GET_MODE (XEXP (ENTRY_VALUE_EXP (x), 0)) | |
| 1123 + (unsigned int) REGNO (XEXP (ENTRY_VALUE_EXP (x), 0)); | |
| 1124 else | |
| 1125 hash += cselib_hash_rtx (ENTRY_VALUE_EXP (x), create, memmode); | |
| 1126 return hash ? hash : (unsigned int) ENTRY_VALUE; | |
| 1127 | |
| 0 | 1128 case CONST_INT: |
| 111 | 1129 hash += ((unsigned) CONST_INT << 7) + UINTVAL (x); |
| 0 | 1130 return hash ? hash : (unsigned int) CONST_INT; |
| 1131 | |
| 111 | 1132 case CONST_WIDE_INT: |
| 1133 for (i = 0; i < CONST_WIDE_INT_NUNITS (x); i++) | |
| 1134 hash += CONST_WIDE_INT_ELT (x, i); | |
| 1135 return hash; | |
| 1136 | |
| 131 | 1137 case CONST_POLY_INT: |
| 1138 { | |
| 1139 inchash::hash h; | |
| 1140 h.add_int (hash); | |
| 1141 for (unsigned int i = 0; i < NUM_POLY_INT_COEFFS; ++i) | |
| 1142 h.add_wide_int (CONST_POLY_INT_COEFFS (x)[i]); | |
| 1143 return h.end (); | |
| 1144 } | |
| 1145 | |
| 0 | 1146 case CONST_DOUBLE: |
| 1147 /* This is like the general case, except that it only counts | |
| 1148 the integers representing the constant. */ | |
| 1149 hash += (unsigned) code + (unsigned) GET_MODE (x); | |
| 111 | 1150 if (TARGET_SUPPORTS_WIDE_INT == 0 && GET_MODE (x) == VOIDmode) |
| 0 | 1151 hash += ((unsigned) CONST_DOUBLE_LOW (x) |
| 1152 + (unsigned) CONST_DOUBLE_HIGH (x)); | |
| 111 | 1153 else |
| 1154 hash += real_hash (CONST_DOUBLE_REAL_VALUE (x)); | |
| 0 | 1155 return hash ? hash : (unsigned int) CONST_DOUBLE; |
| 1156 | |
| 1157 case CONST_FIXED: | |
| 1158 hash += (unsigned int) code + (unsigned int) GET_MODE (x); | |
| 1159 hash += fixed_hash (CONST_FIXED_VALUE (x)); | |
| 1160 return hash ? hash : (unsigned int) CONST_FIXED; | |
| 1161 | |
| 1162 case CONST_VECTOR: | |
| 1163 { | |
| 1164 int units; | |
| 1165 rtx elt; | |
| 1166 | |
| 131 | 1167 units = const_vector_encoded_nelts (x); |
| 0 | 1168 |
| 1169 for (i = 0; i < units; ++i) | |
| 1170 { | |
| 131 | 1171 elt = CONST_VECTOR_ENCODED_ELT (x, i); |
|
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
|
1172 hash += cselib_hash_rtx (elt, 0, memmode); |
| 0 | 1173 } |
| 1174 | |
| 1175 return hash; | |
| 1176 } | |
| 1177 | |
| 1178 /* Assume there is only one rtx object for any given label. */ | |
| 1179 case LABEL_REF: | |
| 1180 /* We don't hash on the address of the CODE_LABEL to avoid bootstrap | |
| 1181 differences and differences between each stage's debugging dumps. */ | |
| 1182 hash += (((unsigned int) LABEL_REF << 7) | |
| 111 | 1183 + CODE_LABEL_NUMBER (label_ref_label (x))); |
| 0 | 1184 return hash ? hash : (unsigned int) LABEL_REF; |
| 1185 | |
| 1186 case SYMBOL_REF: | |
| 1187 { | |
| 1188 /* Don't hash on the symbol's address to avoid bootstrap differences. | |
| 1189 Different hash values may cause expressions to be recorded in | |
| 1190 different orders and thus different registers to be used in the | |
| 1191 final assembler. This also avoids differences in the dump files | |
| 1192 between various stages. */ | |
| 1193 unsigned int h = 0; | |
| 1194 const unsigned char *p = (const unsigned char *) XSTR (x, 0); | |
| 1195 | |
| 1196 while (*p) | |
| 1197 h += (h << 7) + *p++; /* ??? revisit */ | |
| 1198 | |
| 1199 hash += ((unsigned int) SYMBOL_REF << 7) + h; | |
| 1200 return hash ? hash : (unsigned int) SYMBOL_REF; | |
| 1201 } | |
| 1202 | |
| 1203 case PRE_DEC: | |
| 1204 case PRE_INC: | |
|
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
|
1205 /* We can't compute these without knowing the MEM mode. */ |
|
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
|
1206 gcc_assert (memmode != VOIDmode); |
| 131 | 1207 offset = GET_MODE_SIZE (memmode); |
|
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
|
1208 if (code == PRE_DEC) |
| 131 | 1209 offset = -offset; |
|
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
|
1210 /* Adjust the hash so that (mem:MEMMODE (pre_* (reg))) hashes |
|
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
|
1211 like (mem:MEMMODE (plus (reg) (const_int 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
|
1212 hash += (unsigned) PLUS - (unsigned)code |
|
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
|
1213 + cselib_hash_rtx (XEXP (x, 0), create, memmode) |
| 131 | 1214 + cselib_hash_rtx (gen_int_mode (offset, GET_MODE (x)), |
| 1215 create, memmode); | |
|
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
|
1216 return hash ? hash : 1 + (unsigned) PLUS; |
|
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
|
1217 |
|
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
|
1218 case PRE_MODIFY: |
|
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
|
1219 gcc_assert (memmode != VOIDmode); |
|
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
|
1220 return cselib_hash_rtx (XEXP (x, 1), create, memmode); |
|
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
|
1221 |
| 0 | 1222 case POST_DEC: |
| 1223 case POST_INC: | |
| 1224 case POST_MODIFY: | |
|
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
|
1225 gcc_assert (memmode != VOIDmode); |
|
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
|
1226 return cselib_hash_rtx (XEXP (x, 0), create, memmode); |
|
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
|
1227 |
| 0 | 1228 case PC: |
| 1229 case CC0: | |
| 1230 case CALL: | |
| 1231 case UNSPEC_VOLATILE: | |
| 1232 return 0; | |
| 1233 | |
| 1234 case ASM_OPERANDS: | |
| 1235 if (MEM_VOLATILE_P (x)) | |
| 1236 return 0; | |
| 1237 | |
| 1238 break; | |
| 1239 | |
| 1240 default: | |
| 1241 break; | |
| 1242 } | |
| 1243 | |
| 1244 i = GET_RTX_LENGTH (code) - 1; | |
| 1245 fmt = GET_RTX_FORMAT (code); | |
| 1246 for (; i >= 0; i--) | |
| 1247 { | |
| 1248 switch (fmt[i]) | |
| 1249 { | |
| 1250 case 'e': | |
| 1251 { | |
| 1252 rtx tem = XEXP (x, i); | |
|
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
|
1253 unsigned int tem_hash = cselib_hash_rtx (tem, create, memmode); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1254 |
| 0 | 1255 if (tem_hash == 0) |
| 1256 return 0; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1257 |
| 0 | 1258 hash += tem_hash; |
| 1259 } | |
| 1260 break; | |
| 1261 case 'E': | |
| 1262 for (j = 0; j < XVECLEN (x, i); j++) | |
| 1263 { | |
| 1264 unsigned int tem_hash | |
|
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
|
1265 = cselib_hash_rtx (XVECEXP (x, i, j), create, memmode); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1266 |
| 0 | 1267 if (tem_hash == 0) |
| 1268 return 0; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1269 |
| 0 | 1270 hash += tem_hash; |
| 1271 } | |
| 1272 break; | |
| 1273 | |
| 1274 case 's': | |
| 1275 { | |
| 1276 const unsigned char *p = (const unsigned char *) XSTR (x, i); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1277 |
| 0 | 1278 if (p) |
| 1279 while (*p) | |
| 1280 hash += *p++; | |
| 1281 break; | |
| 1282 } | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1283 |
| 0 | 1284 case 'i': |
| 1285 hash += XINT (x, i); | |
| 1286 break; | |
| 1287 | |
| 131 | 1288 case 'p': |
| 1289 hash += constant_lower_bound (SUBREG_BYTE (x)); | |
| 1290 break; | |
| 1291 | |
| 0 | 1292 case '0': |
| 1293 case 't': | |
| 1294 /* unused */ | |
| 1295 break; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1296 |
| 0 | 1297 default: |
| 1298 gcc_unreachable (); | |
| 1299 } | |
| 1300 } | |
| 1301 | |
| 1302 return hash ? hash : 1 + (unsigned int) GET_CODE (x); | |
| 1303 } | |
| 1304 | |
| 1305 /* Create a new value structure for VALUE and initialize it. The mode of the | |
| 1306 value is MODE. */ | |
| 1307 | |
| 1308 static inline cselib_val * | |
| 111 | 1309 new_cselib_val (unsigned int hash, machine_mode mode, rtx x) |
| 0 | 1310 { |
| 111 | 1311 cselib_val *e = cselib_val_pool.allocate (); |
| 0 | 1312 |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1313 gcc_assert (hash); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1314 gcc_assert (next_uid); |
| 0 | 1315 |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1316 e->hash = hash; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1317 e->uid = next_uid++; |
| 0 | 1318 /* We use an alloc pool to allocate this RTL construct because it |
| 1319 accounts for about 8% of the overall memory usage. We know | |
| 1320 precisely when we can have VALUE RTXen (when cselib is active) | |
| 1321 so we don't need to put them in garbage collected memory. | |
| 1322 ??? Why should a VALUE be an RTX in the first place? */ | |
| 111 | 1323 e->val_rtx = (rtx_def*) value_pool.allocate (); |
| 0 | 1324 memset (e->val_rtx, 0, RTX_HDR_SIZE); |
| 1325 PUT_CODE (e->val_rtx, VALUE); | |
| 1326 PUT_MODE (e->val_rtx, mode); | |
| 1327 CSELIB_VAL_PTR (e->val_rtx) = e; | |
| 1328 e->addr_list = 0; | |
| 1329 e->locs = 0; | |
| 1330 e->next_containing_mem = 0; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1331 |
|
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
|
1332 if (dump_file && (dump_flags & TDF_CSELIB)) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1333 { |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1334 fprintf (dump_file, "cselib value %u:%u ", e->uid, hash); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1335 if (flag_dump_noaddr || flag_dump_unnumbered) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1336 fputs ("# ", dump_file); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1337 else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1338 fprintf (dump_file, "%p ", (void*)e); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1339 print_rtl_single (dump_file, x); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1340 fputc ('\n', dump_file); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1341 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1342 |
| 0 | 1343 return e; |
| 1344 } | |
| 1345 | |
| 1346 /* ADDR_ELT is a value that is used as address. MEM_ELT is the value that | |
| 1347 contains the data at this address. X is a MEM that represents the | |
| 1348 value. Update the two value structures to represent this situation. */ | |
| 1349 | |
| 1350 static void | |
| 1351 add_mem_for_addr (cselib_val *addr_elt, cselib_val *mem_elt, rtx x) | |
| 1352 { | |
| 111 | 1353 addr_elt = canonical_cselib_val (addr_elt); |
| 1354 mem_elt = canonical_cselib_val (mem_elt); | |
| 0 | 1355 |
| 1356 /* Avoid duplicates. */ | |
| 111 | 1357 addr_space_t as = MEM_ADDR_SPACE (x); |
| 1358 for (elt_loc_list *l = mem_elt->locs; l; l = l->next) | |
| 0 | 1359 if (MEM_P (l->loc) |
| 111 | 1360 && CSELIB_VAL_PTR (XEXP (l->loc, 0)) == addr_elt |
| 1361 && MEM_ADDR_SPACE (l->loc) == as) | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1362 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1363 promote_debug_loc (l); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1364 return; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1365 } |
| 0 | 1366 |
| 1367 addr_elt->addr_list = new_elt_list (addr_elt->addr_list, mem_elt); | |
| 111 | 1368 new_elt_loc_list (mem_elt, |
| 1369 replace_equiv_address_nv (x, addr_elt->val_rtx)); | |
| 0 | 1370 if (mem_elt->next_containing_mem == NULL) |
| 1371 { | |
| 1372 mem_elt->next_containing_mem = first_containing_mem; | |
| 1373 first_containing_mem = mem_elt; | |
| 1374 } | |
| 1375 } | |
| 1376 | |
| 1377 /* Subroutine of cselib_lookup. Return a value for X, which is a MEM rtx. | |
| 1378 If CREATE, make a new one if we haven't seen it before. */ | |
| 1379 | |
| 1380 static cselib_val * | |
| 1381 cselib_lookup_mem (rtx x, int create) | |
| 1382 { | |
| 111 | 1383 machine_mode mode = GET_MODE (x); |
| 1384 machine_mode addr_mode; | |
| 1385 cselib_val **slot; | |
| 0 | 1386 cselib_val *addr; |
| 1387 cselib_val *mem_elt; | |
| 1388 | |
| 1389 if (MEM_VOLATILE_P (x) || mode == BLKmode | |
| 1390 || !cselib_record_memory | |
| 1391 || (FLOAT_MODE_P (mode) && flag_float_store)) | |
| 1392 return 0; | |
| 1393 | |
|
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
|
1394 addr_mode = GET_MODE (XEXP (x, 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
|
1395 if (addr_mode == VOIDmode) |
|
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
|
1396 addr_mode = Pmode; |
|
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
|
1397 |
| 0 | 1398 /* Look up the value for the address. */ |
|
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
|
1399 addr = cselib_lookup (XEXP (x, 0), addr_mode, create, mode); |
| 0 | 1400 if (! addr) |
| 1401 return 0; | |
| 111 | 1402 addr = canonical_cselib_val (addr); |
| 0 | 1403 |
| 1404 /* Find a value that describes a value of our mode at that address. */ | |
| 111 | 1405 addr_space_t as = MEM_ADDR_SPACE (x); |
| 1406 for (elt_list *l = addr->addr_list; l; l = l->next) | |
| 0 | 1407 if (GET_MODE (l->elt->val_rtx) == mode) |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1408 { |
| 111 | 1409 for (elt_loc_list *l2 = l->elt->locs; l2; l2 = l2->next) |
| 1410 if (MEM_P (l2->loc) && MEM_ADDR_SPACE (l2->loc) == as) | |
| 1411 { | |
| 1412 promote_debug_loc (l->elt->locs); | |
| 1413 return l->elt; | |
| 1414 } | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1415 } |
| 0 | 1416 |
| 1417 if (! create) | |
| 1418 return 0; | |
| 1419 | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1420 mem_elt = new_cselib_val (next_uid, mode, x); |
| 0 | 1421 add_mem_for_addr (addr, mem_elt, x); |
| 111 | 1422 slot = cselib_find_slot (mode, x, mem_elt->hash, INSERT, VOIDmode); |
| 0 | 1423 *slot = mem_elt; |
| 1424 return mem_elt; | |
| 1425 } | |
| 1426 | |
| 111 | 1427 /* Search through the possible substitutions in P. We prefer a non reg |
| 0 | 1428 substitution because this allows us to expand the tree further. If |
| 1429 we find, just a reg, take the lowest regno. There may be several | |
| 1430 non-reg results, we just take the first one because they will all | |
| 1431 expand to the same place. */ | |
| 1432 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1433 static rtx |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1434 expand_loc (struct elt_loc_list *p, struct expand_value_data *evd, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1435 int max_depth) |
| 0 | 1436 { |
| 1437 rtx reg_result = NULL; | |
| 1438 unsigned int regno = UINT_MAX; | |
| 1439 struct elt_loc_list *p_in = p; | |
| 1440 | |
| 111 | 1441 for (; p; p = p->next) |
| 0 | 1442 { |
| 111 | 1443 /* Return these right away to avoid returning stack pointer based |
| 1444 expressions for frame pointer and vice versa, which is something | |
| 1445 that would confuse DSE. See the comment in cselib_expand_value_rtx_1 | |
| 1446 for more details. */ | |
| 1447 if (REG_P (p->loc) | |
| 1448 && (REGNO (p->loc) == STACK_POINTER_REGNUM | |
| 1449 || REGNO (p->loc) == FRAME_POINTER_REGNUM | |
| 1450 || REGNO (p->loc) == HARD_FRAME_POINTER_REGNUM | |
| 1451 || REGNO (p->loc) == cfa_base_preserved_regno)) | |
| 1452 return p->loc; | |
| 0 | 1453 /* Avoid infinite recursion trying to expand a reg into a |
| 1454 the same reg. */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1455 if ((REG_P (p->loc)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1456 && (REGNO (p->loc) < regno) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1457 && !bitmap_bit_p (evd->regs_active, REGNO (p->loc))) |
| 0 | 1458 { |
| 1459 reg_result = p->loc; | |
| 1460 regno = REGNO (p->loc); | |
| 1461 } | |
| 1462 /* Avoid infinite recursion and do not try to expand the | |
| 1463 value. */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1464 else if (GET_CODE (p->loc) == VALUE |
| 0 | 1465 && CSELIB_VAL_PTR (p->loc)->locs == p_in) |
| 1466 continue; | |
| 1467 else if (!REG_P (p->loc)) | |
| 1468 { | |
| 1469 rtx result, note; | |
|
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
|
1470 if (dump_file && (dump_flags & TDF_CSELIB)) |
| 0 | 1471 { |
| 1472 print_inline_rtx (dump_file, p->loc, 0); | |
| 1473 fprintf (dump_file, "\n"); | |
| 1474 } | |
| 1475 if (GET_CODE (p->loc) == LO_SUM | |
| 1476 && GET_CODE (XEXP (p->loc, 1)) == SYMBOL_REF | |
| 1477 && p->setting_insn | |
| 1478 && (note = find_reg_note (p->setting_insn, REG_EQUAL, NULL_RTX)) | |
| 1479 && XEXP (note, 0) == XEXP (p->loc, 1)) | |
| 1480 return XEXP (p->loc, 1); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1481 result = cselib_expand_value_rtx_1 (p->loc, evd, max_depth - 1); |
| 0 | 1482 if (result) |
| 1483 return result; | |
| 1484 } | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1485 |
| 0 | 1486 } |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1487 |
| 0 | 1488 if (regno != UINT_MAX) |
| 1489 { | |
| 1490 rtx result; | |
|
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
|
1491 if (dump_file && (dump_flags & TDF_CSELIB)) |
| 0 | 1492 fprintf (dump_file, "r%d\n", regno); |
| 1493 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1494 result = cselib_expand_value_rtx_1 (reg_result, evd, max_depth - 1); |
| 0 | 1495 if (result) |
| 1496 return result; | |
| 1497 } | |
| 1498 | |
|
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
|
1499 if (dump_file && (dump_flags & TDF_CSELIB)) |
| 0 | 1500 { |
| 1501 if (reg_result) | |
| 1502 { | |
| 1503 print_inline_rtx (dump_file, reg_result, 0); | |
| 1504 fprintf (dump_file, "\n"); | |
| 1505 } | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1506 else |
| 0 | 1507 fprintf (dump_file, "NULL\n"); |
| 1508 } | |
| 1509 return reg_result; | |
| 1510 } | |
| 1511 | |
| 1512 | |
| 1513 /* Forward substitute and expand an expression out to its roots. | |
| 1514 This is the opposite of common subexpression. Because local value | |
| 1515 numbering is such a weak optimization, the expanded expression is | |
| 1516 pretty much unique (not from a pointer equals point of view but | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1517 from a tree shape point of view. |
| 0 | 1518 |
| 1519 This function returns NULL if the expansion fails. The expansion | |
| 1520 will fail if there is no value number for one of the operands or if | |
| 1521 one of the operands has been overwritten between the current insn | |
| 1522 and the beginning of the basic block. For instance x has no | |
| 1523 expansion in: | |
| 1524 | |
| 1525 r1 <- r1 + 3 | |
| 1526 x <- r1 + 8 | |
| 1527 | |
| 1528 REGS_ACTIVE is a scratch bitmap that should be clear when passing in. | |
| 1529 It is clear on return. */ | |
| 1530 | |
| 1531 rtx | |
| 1532 cselib_expand_value_rtx (rtx orig, bitmap regs_active, int max_depth) | |
| 1533 { | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1534 struct expand_value_data evd; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1535 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1536 evd.regs_active = regs_active; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1537 evd.callback = NULL; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1538 evd.callback_arg = NULL; |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1539 evd.dummy = false; |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1540 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1541 return cselib_expand_value_rtx_1 (orig, &evd, max_depth); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1542 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1543 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1544 /* Same as cselib_expand_value_rtx, but using a callback to try to |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1545 resolve some expressions. The CB function should return ORIG if it |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1546 can't or does not want to deal with a certain RTX. Any other |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1547 return value, including NULL, will be used as the expansion for |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1548 VALUE, without any further changes. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1549 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1550 rtx |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1551 cselib_expand_value_rtx_cb (rtx orig, bitmap regs_active, int max_depth, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1552 cselib_expand_callback cb, void *data) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1553 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1554 struct expand_value_data evd; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1555 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1556 evd.regs_active = regs_active; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1557 evd.callback = cb; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1558 evd.callback_arg = data; |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1559 evd.dummy = false; |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1560 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1561 return cselib_expand_value_rtx_1 (orig, &evd, max_depth); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1562 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1563 |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1564 /* Similar to cselib_expand_value_rtx_cb, but no rtxs are actually copied |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1565 or simplified. Useful to find out whether cselib_expand_value_rtx_cb |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1566 would return NULL or non-NULL, without allocating new rtx. */ |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1567 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1568 bool |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1569 cselib_dummy_expand_value_rtx_cb (rtx orig, bitmap regs_active, int max_depth, |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1570 cselib_expand_callback cb, void *data) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1571 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1572 struct expand_value_data evd; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1573 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1574 evd.regs_active = regs_active; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1575 evd.callback = cb; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1576 evd.callback_arg = data; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1577 evd.dummy = true; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1578 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1579 return cselib_expand_value_rtx_1 (orig, &evd, max_depth) != NULL; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1580 } |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1581 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1582 /* Internal implementation of cselib_expand_value_rtx and |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1583 cselib_expand_value_rtx_cb. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1584 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1585 static rtx |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1586 cselib_expand_value_rtx_1 (rtx orig, struct expand_value_data *evd, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1587 int max_depth) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1588 { |
| 0 | 1589 rtx copy, scopy; |
| 1590 int i, j; | |
| 1591 RTX_CODE code; | |
| 1592 const char *format_ptr; | |
| 111 | 1593 machine_mode mode; |
| 0 | 1594 |
| 1595 code = GET_CODE (orig); | |
| 1596 | |
| 1597 /* For the context of dse, if we end up expand into a huge tree, we | |
| 1598 will not have a useful address, so we might as well just give up | |
| 1599 quickly. */ | |
| 1600 if (max_depth <= 0) | |
| 1601 return NULL; | |
| 1602 | |
| 1603 switch (code) | |
| 1604 { | |
| 1605 case REG: | |
| 1606 { | |
| 1607 struct elt_list *l = REG_VALUES (REGNO (orig)); | |
| 1608 | |
| 1609 if (l && l->elt == NULL) | |
| 1610 l = l->next; | |
| 1611 for (; l; l = l->next) | |
| 1612 if (GET_MODE (l->elt->val_rtx) == GET_MODE (orig)) | |
| 1613 { | |
| 1614 rtx result; | |
| 111 | 1615 unsigned regno = REGNO (orig); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1616 |
| 0 | 1617 /* The only thing that we are not willing to do (this |
| 1618 is requirement of dse and if others potential uses | |
| 1619 need this function we should add a parm to control | |
| 1620 it) is that we will not substitute the | |
| 1621 STACK_POINTER_REGNUM, FRAME_POINTER or the | |
| 1622 HARD_FRAME_POINTER. | |
| 1623 | |
| 1624 These expansions confuses the code that notices that | |
| 1625 stores into the frame go dead at the end of the | |
| 1626 function and that the frame is not effected by calls | |
| 1627 to subroutines. If you allow the | |
| 1628 STACK_POINTER_REGNUM substitution, then dse will | |
| 1629 think that parameter pushing also goes dead which is | |
| 1630 wrong. If you allow the FRAME_POINTER or the | |
| 1631 HARD_FRAME_POINTER then you lose the opportunity to | |
| 1632 make the frame assumptions. */ | |
| 1633 if (regno == STACK_POINTER_REGNUM | |
| 1634 || regno == FRAME_POINTER_REGNUM | |
| 111 | 1635 || regno == HARD_FRAME_POINTER_REGNUM |
| 1636 || regno == cfa_base_preserved_regno) | |
| 0 | 1637 return orig; |
| 1638 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1639 bitmap_set_bit (evd->regs_active, regno); |
| 0 | 1640 |
|
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
|
1641 if (dump_file && (dump_flags & TDF_CSELIB)) |
| 0 | 1642 fprintf (dump_file, "expanding: r%d into: ", regno); |
| 1643 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1644 result = expand_loc (l->elt->locs, evd, max_depth); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1645 bitmap_clear_bit (evd->regs_active, regno); |
| 0 | 1646 |
| 1647 if (result) | |
| 1648 return result; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1649 else |
| 0 | 1650 return orig; |
| 1651 } | |
| 111 | 1652 return orig; |
| 0 | 1653 } |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1654 |
| 111 | 1655 CASE_CONST_ANY: |
| 0 | 1656 case SYMBOL_REF: |
| 1657 case CODE_LABEL: | |
| 1658 case PC: | |
| 1659 case CC0: | |
| 1660 case SCRATCH: | |
| 1661 /* SCRATCH must be shared because they represent distinct values. */ | |
| 1662 return orig; | |
| 1663 case CLOBBER: | |
| 1664 if (REG_P (XEXP (orig, 0)) && HARD_REGISTER_NUM_P (REGNO (XEXP (orig, 0)))) | |
| 1665 return orig; | |
| 1666 break; | |
| 1667 | |
| 1668 case CONST: | |
| 1669 if (shared_const_p (orig)) | |
| 1670 return orig; | |
| 1671 break; | |
| 1672 | |
| 1673 case SUBREG: | |
| 1674 { | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1675 rtx subreg; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1676 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1677 if (evd->callback) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1678 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1679 subreg = evd->callback (orig, evd->regs_active, max_depth, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1680 evd->callback_arg); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1681 if (subreg != orig) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1682 return subreg; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1683 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1684 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1685 subreg = cselib_expand_value_rtx_1 (SUBREG_REG (orig), evd, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1686 max_depth - 1); |
| 0 | 1687 if (!subreg) |
| 1688 return NULL; | |
| 1689 scopy = simplify_gen_subreg (GET_MODE (orig), subreg, | |
| 1690 GET_MODE (SUBREG_REG (orig)), | |
| 1691 SUBREG_BYTE (orig)); | |
| 1692 if (scopy == NULL | |
| 1693 || (GET_CODE (scopy) == SUBREG | |
| 1694 && !REG_P (SUBREG_REG (scopy)) | |
| 1695 && !MEM_P (SUBREG_REG (scopy)))) | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1696 return NULL; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1697 |
| 0 | 1698 return scopy; |
| 1699 } | |
| 1700 | |
| 1701 case VALUE: | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1702 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1703 rtx result; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1704 |
|
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
|
1705 if (dump_file && (dump_flags & TDF_CSELIB)) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1706 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1707 fputs ("\nexpanding ", dump_file); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1708 print_rtl_single (dump_file, orig); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1709 fputs (" into...", dump_file); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1710 } |
| 0 | 1711 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1712 if (evd->callback) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1713 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1714 result = evd->callback (orig, evd->regs_active, max_depth, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1715 evd->callback_arg); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1716 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1717 if (result != orig) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1718 return result; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1719 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1720 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1721 result = expand_loc (CSELIB_VAL_PTR (orig)->locs, evd, max_depth); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1722 return result; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1723 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1724 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1725 case DEBUG_EXPR: |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1726 if (evd->callback) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1727 return evd->callback (orig, evd->regs_active, max_depth, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1728 evd->callback_arg); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1729 return orig; |
| 0 | 1730 |
| 1731 default: | |
| 1732 break; | |
| 1733 } | |
| 1734 | |
| 1735 /* Copy the various flags, fields, and other information. We assume | |
| 1736 that all fields need copying, and then clear the fields that should | |
| 1737 not be copied. That is the sensible default behavior, and forces | |
| 1738 us to explicitly document why we are *not* copying a flag. */ | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1739 if (evd->dummy) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1740 copy = NULL; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1741 else |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1742 copy = shallow_copy_rtx (orig); |
| 0 | 1743 |
| 1744 format_ptr = GET_RTX_FORMAT (code); | |
| 1745 | |
| 1746 for (i = 0; i < GET_RTX_LENGTH (code); i++) | |
| 1747 switch (*format_ptr++) | |
| 1748 { | |
| 1749 case 'e': | |
| 1750 if (XEXP (orig, i) != NULL) | |
| 1751 { | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1752 rtx result = cselib_expand_value_rtx_1 (XEXP (orig, i), evd, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1753 max_depth - 1); |
| 0 | 1754 if (!result) |
| 1755 return NULL; | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1756 if (copy) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1757 XEXP (copy, i) = result; |
| 0 | 1758 } |
| 1759 break; | |
| 1760 | |
| 1761 case 'E': | |
| 1762 case 'V': | |
| 1763 if (XVEC (orig, i) != NULL) | |
| 1764 { | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1765 if (copy) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1766 XVEC (copy, i) = rtvec_alloc (XVECLEN (orig, i)); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1767 for (j = 0; j < XVECLEN (orig, i); j++) |
| 0 | 1768 { |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1769 rtx result = cselib_expand_value_rtx_1 (XVECEXP (orig, i, j), |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1770 evd, max_depth - 1); |
| 0 | 1771 if (!result) |
| 1772 return NULL; | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1773 if (copy) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1774 XVECEXP (copy, i, j) = result; |
| 0 | 1775 } |
| 1776 } | |
| 1777 break; | |
| 1778 | |
| 1779 case 't': | |
| 1780 case 'w': | |
| 1781 case 'i': | |
| 1782 case 's': | |
| 1783 case 'S': | |
| 1784 case 'T': | |
| 1785 case 'u': | |
| 1786 case 'B': | |
| 1787 case '0': | |
| 1788 /* These are left unchanged. */ | |
| 1789 break; | |
| 1790 | |
| 1791 default: | |
| 1792 gcc_unreachable (); | |
| 1793 } | |
| 1794 | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1795 if (evd->dummy) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1796 return orig; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1797 |
| 0 | 1798 mode = GET_MODE (copy); |
| 1799 /* If an operand has been simplified into CONST_INT, which doesn't | |
| 1800 have a mode and the mode isn't derivable from whole rtx's mode, | |
| 1801 try simplify_*_operation first with mode from original's operand | |
| 1802 and as a fallback wrap CONST_INT into gen_rtx_CONST. */ | |
| 1803 scopy = copy; | |
| 1804 switch (GET_RTX_CLASS (code)) | |
| 1805 { | |
| 1806 case RTX_UNARY: | |
| 1807 if (CONST_INT_P (XEXP (copy, 0)) | |
| 1808 && GET_MODE (XEXP (orig, 0)) != VOIDmode) | |
| 1809 { | |
| 1810 scopy = simplify_unary_operation (code, mode, XEXP (copy, 0), | |
| 1811 GET_MODE (XEXP (orig, 0))); | |
| 1812 if (scopy) | |
| 1813 return scopy; | |
| 1814 } | |
| 1815 break; | |
| 1816 case RTX_COMM_ARITH: | |
| 1817 case RTX_BIN_ARITH: | |
| 1818 /* These expressions can derive operand modes from the whole rtx's mode. */ | |
| 1819 break; | |
| 1820 case RTX_TERNARY: | |
| 1821 case RTX_BITFIELD_OPS: | |
| 1822 if (CONST_INT_P (XEXP (copy, 0)) | |
| 1823 && GET_MODE (XEXP (orig, 0)) != VOIDmode) | |
| 1824 { | |
| 1825 scopy = simplify_ternary_operation (code, mode, | |
| 1826 GET_MODE (XEXP (orig, 0)), | |
| 1827 XEXP (copy, 0), XEXP (copy, 1), | |
| 1828 XEXP (copy, 2)); | |
| 1829 if (scopy) | |
| 1830 return scopy; | |
| 1831 } | |
| 1832 break; | |
| 1833 case RTX_COMPARE: | |
| 1834 case RTX_COMM_COMPARE: | |
| 1835 if (CONST_INT_P (XEXP (copy, 0)) | |
| 1836 && GET_MODE (XEXP (copy, 1)) == VOIDmode | |
| 1837 && (GET_MODE (XEXP (orig, 0)) != VOIDmode | |
| 1838 || GET_MODE (XEXP (orig, 1)) != VOIDmode)) | |
| 1839 { | |
| 1840 scopy = simplify_relational_operation (code, mode, | |
| 1841 (GET_MODE (XEXP (orig, 0)) | |
| 1842 != VOIDmode) | |
| 1843 ? GET_MODE (XEXP (orig, 0)) | |
| 1844 : GET_MODE (XEXP (orig, 1)), | |
| 1845 XEXP (copy, 0), | |
| 1846 XEXP (copy, 1)); | |
| 1847 if (scopy) | |
| 1848 return scopy; | |
| 1849 } | |
| 1850 break; | |
| 1851 default: | |
| 1852 break; | |
| 1853 } | |
| 1854 scopy = simplify_rtx (copy); | |
| 1855 if (scopy) | |
| 1856 return scopy; | |
| 1857 return copy; | |
| 1858 } | |
| 1859 | |
| 1860 /* Walk rtx X and replace all occurrences of REG and MEM subexpressions | |
| 1861 with VALUE expressions. This way, it becomes independent of changes | |
| 1862 to registers and memory. | |
| 1863 X isn't actually modified; if modifications are needed, new rtl is | |
|
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
|
1864 allocated. However, the return value can share rtl with X. |
|
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
|
1865 If X is within a MEM, MEMMODE must be the mode of the MEM. */ |
| 0 | 1866 |
| 1867 rtx | |
| 111 | 1868 cselib_subst_to_values (rtx x, machine_mode memmode) |
| 0 | 1869 { |
| 1870 enum rtx_code code = GET_CODE (x); | |
| 1871 const char *fmt = GET_RTX_FORMAT (code); | |
| 1872 cselib_val *e; | |
| 1873 struct elt_list *l; | |
| 1874 rtx copy = x; | |
| 1875 int i; | |
| 131 | 1876 poly_int64 offset; |
| 0 | 1877 |
| 1878 switch (code) | |
| 1879 { | |
| 1880 case REG: | |
| 1881 l = REG_VALUES (REGNO (x)); | |
| 1882 if (l && l->elt == NULL) | |
| 1883 l = l->next; | |
| 1884 for (; l; l = l->next) | |
| 1885 if (GET_MODE (l->elt->val_rtx) == GET_MODE (x)) | |
| 1886 return l->elt->val_rtx; | |
| 1887 | |
| 1888 gcc_unreachable (); | |
| 1889 | |
| 1890 case MEM: | |
| 1891 e = cselib_lookup_mem (x, 0); | |
|
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
|
1892 /* This used to happen for autoincrements, but we deal with them |
|
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
|
1893 properly now. Remove the if stmt for the next release. */ |
| 0 | 1894 if (! e) |
| 1895 { | |
|
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
|
1896 /* Assign a value that doesn't match any other. */ |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1897 e = new_cselib_val (next_uid, GET_MODE (x), x); |
| 0 | 1898 } |
| 1899 return e->val_rtx; | |
| 1900 | |
| 111 | 1901 case ENTRY_VALUE: |
| 1902 e = cselib_lookup (x, GET_MODE (x), 0, memmode); | |
| 1903 if (! e) | |
| 1904 break; | |
| 1905 return e->val_rtx; | |
| 1906 | |
| 1907 CASE_CONST_ANY: | |
| 0 | 1908 return x; |
| 1909 | |
|
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
|
1910 case PRE_DEC: |
| 0 | 1911 case PRE_INC: |
|
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
|
1912 gcc_assert (memmode != VOIDmode); |
| 131 | 1913 offset = GET_MODE_SIZE (memmode); |
|
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
|
1914 if (code == PRE_DEC) |
| 131 | 1915 offset = -offset; |
| 111 | 1916 return cselib_subst_to_values (plus_constant (GET_MODE (x), |
| 131 | 1917 XEXP (x, 0), offset), |
|
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
|
1918 memmode); |
|
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
|
1919 |
|
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
|
1920 case PRE_MODIFY: |
|
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
|
1921 gcc_assert (memmode != VOIDmode); |
|
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
|
1922 return cselib_subst_to_values (XEXP (x, 1), memmode); |
|
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
|
1923 |
| 0 | 1924 case POST_DEC: |
|
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
|
1925 case POST_INC: |
| 0 | 1926 case POST_MODIFY: |
|
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
|
1927 gcc_assert (memmode != VOIDmode); |
|
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
|
1928 return cselib_subst_to_values (XEXP (x, 0), memmode); |
| 0 | 1929 |
| 1930 default: | |
| 1931 break; | |
| 1932 } | |
| 1933 | |
| 1934 for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--) | |
| 1935 { | |
| 1936 if (fmt[i] == 'e') | |
| 1937 { | |
|
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
|
1938 rtx t = cselib_subst_to_values (XEXP (x, i), memmode); |
| 0 | 1939 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1940 if (t != XEXP (x, i)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1941 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1942 if (x == copy) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1943 copy = shallow_copy_rtx (x); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1944 XEXP (copy, i) = t; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1945 } |
| 0 | 1946 } |
| 1947 else if (fmt[i] == 'E') | |
| 1948 { | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1949 int j; |
| 0 | 1950 |
| 1951 for (j = 0; j < XVECLEN (x, i); j++) | |
| 1952 { | |
|
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
|
1953 rtx t = cselib_subst_to_values (XVECEXP (x, i, j), memmode); |
| 0 | 1954 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1955 if (t != XVECEXP (x, i, j)) |
| 0 | 1956 { |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1957 if (XVEC (x, i) == XVEC (copy, i)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1958 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1959 if (x == copy) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1960 copy = shallow_copy_rtx (x); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1961 XVEC (copy, i) = shallow_copy_rtvec (XVEC (x, i)); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1962 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1963 XVECEXP (copy, i, j) = t; |
| 0 | 1964 } |
| 1965 } | |
| 1966 } | |
| 1967 } | |
| 1968 | |
| 1969 return copy; | |
| 1970 } | |
| 1971 | |
| 111 | 1972 /* Wrapper for cselib_subst_to_values, that indicates X is in INSN. */ |
| 1973 | |
| 1974 rtx | |
| 1975 cselib_subst_to_values_from_insn (rtx x, machine_mode memmode, rtx_insn *insn) | |
| 1976 { | |
| 1977 rtx ret; | |
| 1978 gcc_assert (!cselib_current_insn); | |
| 1979 cselib_current_insn = insn; | |
| 1980 ret = cselib_subst_to_values (x, memmode); | |
| 1981 cselib_current_insn = NULL; | |
| 1982 return ret; | |
| 1983 } | |
| 1984 | |
|
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
|
1985 /* Look up the rtl expression X in our tables and return the value it |
|
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
|
1986 has. If CREATE is zero, we return NULL if we don't know the value. |
|
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
|
1987 Otherwise, we create a new one if possible, using mode MODE if X |
|
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
|
1988 doesn't have a mode (i.e. because it's a constant). When X is part |
|
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
|
1989 of an address, MEMMODE should be the mode of the enclosing MEM if |
|
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
|
1990 we're tracking autoinc expressions. */ |
| 0 | 1991 |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1992 static cselib_val * |
| 111 | 1993 cselib_lookup_1 (rtx x, machine_mode mode, |
| 1994 int create, machine_mode memmode) | |
| 0 | 1995 { |
| 111 | 1996 cselib_val **slot; |
| 0 | 1997 cselib_val *e; |
| 1998 unsigned int hashval; | |
| 1999 | |
| 2000 if (GET_MODE (x) != VOIDmode) | |
| 2001 mode = GET_MODE (x); | |
| 2002 | |
| 2003 if (GET_CODE (x) == VALUE) | |
| 2004 return CSELIB_VAL_PTR (x); | |
| 2005 | |
| 2006 if (REG_P (x)) | |
| 2007 { | |
| 2008 struct elt_list *l; | |
| 2009 unsigned int i = REGNO (x); | |
| 2010 | |
| 2011 l = REG_VALUES (i); | |
| 2012 if (l && l->elt == NULL) | |
| 2013 l = l->next; | |
| 2014 for (; l; l = l->next) | |
| 2015 if (mode == GET_MODE (l->elt->val_rtx)) | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2016 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2017 promote_debug_loc (l->elt->locs); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2018 return l->elt; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2019 } |
| 0 | 2020 |
| 2021 if (! create) | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2022 return 0; |
| 0 | 2023 |
| 2024 if (i < FIRST_PSEUDO_REGISTER) | |
| 2025 { | |
| 111 | 2026 unsigned int n = hard_regno_nregs (i, mode); |
| 0 | 2027 |
| 2028 if (n > max_value_regs) | |
| 2029 max_value_regs = n; | |
| 2030 } | |
| 2031 | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2032 e = new_cselib_val (next_uid, GET_MODE (x), x); |
| 111 | 2033 new_elt_loc_list (e, x); |
| 2034 | |
| 2035 scalar_int_mode int_mode; | |
| 0 | 2036 if (REG_VALUES (i) == 0) |
| 2037 { | |
| 2038 /* Maintain the invariant that the first entry of | |
| 2039 REG_VALUES, if present, must be the value used to set the | |
| 2040 register, or NULL. */ | |
| 2041 used_regs[n_used_regs++] = i; | |
| 2042 REG_VALUES (i) = new_elt_list (REG_VALUES (i), NULL); | |
| 2043 } | |
| 111 | 2044 else if (cselib_preserve_constants |
| 2045 && is_int_mode (mode, &int_mode)) | |
| 2046 { | |
| 2047 /* During var-tracking, try harder to find equivalences | |
| 2048 for SUBREGs. If a setter sets say a DImode register | |
| 2049 and user uses that register only in SImode, add a lowpart | |
| 2050 subreg location. */ | |
| 2051 struct elt_list *lwider = NULL; | |
| 2052 scalar_int_mode lmode; | |
| 2053 l = REG_VALUES (i); | |
| 2054 if (l && l->elt == NULL) | |
| 2055 l = l->next; | |
| 2056 for (; l; l = l->next) | |
| 2057 if (is_int_mode (GET_MODE (l->elt->val_rtx), &lmode) | |
| 2058 && GET_MODE_SIZE (lmode) > GET_MODE_SIZE (int_mode) | |
| 2059 && (lwider == NULL | |
| 2060 || partial_subreg_p (lmode, | |
| 2061 GET_MODE (lwider->elt->val_rtx)))) | |
| 2062 { | |
| 2063 struct elt_loc_list *el; | |
| 2064 if (i < FIRST_PSEUDO_REGISTER | |
| 2065 && hard_regno_nregs (i, lmode) != 1) | |
| 2066 continue; | |
| 2067 for (el = l->elt->locs; el; el = el->next) | |
| 2068 if (!REG_P (el->loc)) | |
| 2069 break; | |
| 2070 if (el) | |
| 2071 lwider = l; | |
| 2072 } | |
| 2073 if (lwider) | |
| 2074 { | |
| 2075 rtx sub = lowpart_subreg (int_mode, lwider->elt->val_rtx, | |
| 2076 GET_MODE (lwider->elt->val_rtx)); | |
| 2077 if (sub) | |
| 2078 new_elt_loc_list (e, sub); | |
| 2079 } | |
| 2080 } | |
| 0 | 2081 REG_VALUES (i)->next = new_elt_list (REG_VALUES (i)->next, e); |
| 111 | 2082 slot = cselib_find_slot (mode, x, e->hash, INSERT, memmode); |
| 0 | 2083 *slot = e; |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2084 return e; |
| 0 | 2085 } |
| 2086 | |
| 2087 if (MEM_P (x)) | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2088 return cselib_lookup_mem (x, create); |
| 0 | 2089 |
|
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
|
2090 hashval = cselib_hash_rtx (x, create, memmode); |
| 0 | 2091 /* Can't even create if hashing is not possible. */ |
| 2092 if (! hashval) | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2093 return 0; |
| 0 | 2094 |
| 111 | 2095 slot = cselib_find_slot (mode, x, hashval, |
|
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
|
2096 create ? INSERT : NO_INSERT, memmode); |
| 0 | 2097 if (slot == 0) |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2098 return 0; |
| 0 | 2099 |
| 2100 e = (cselib_val *) *slot; | |
| 2101 if (e) | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2102 return e; |
| 0 | 2103 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2104 e = new_cselib_val (hashval, mode, x); |
| 0 | 2105 |
| 2106 /* We have to fill the slot before calling cselib_subst_to_values: | |
| 2107 the hash table is inconsistent until we do so, and | |
| 2108 cselib_subst_to_values will need to do lookups. */ | |
| 111 | 2109 *slot = e; |
| 2110 new_elt_loc_list (e, cselib_subst_to_values (x, memmode)); | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2111 return e; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2112 } |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2113 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2114 /* Wrapper for cselib_lookup, that indicates X is in INSN. */ |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2115 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2116 cselib_val * |
| 111 | 2117 cselib_lookup_from_insn (rtx x, machine_mode mode, |
| 2118 int create, machine_mode memmode, rtx_insn *insn) | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2119 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2120 cselib_val *ret; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2121 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2122 gcc_assert (!cselib_current_insn); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2123 cselib_current_insn = insn; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2124 |
|
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
|
2125 ret = cselib_lookup (x, mode, create, memmode); |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2126 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2127 cselib_current_insn = NULL; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2128 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2129 return ret; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2130 } |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2131 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2132 /* Wrapper for cselib_lookup_1, that logs the lookup result and |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2133 maintains invariants related with debug insns. */ |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2134 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2135 cselib_val * |
| 111 | 2136 cselib_lookup (rtx x, machine_mode mode, |
| 2137 int create, machine_mode memmode) | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2138 { |
|
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
|
2139 cselib_val *ret = cselib_lookup_1 (x, mode, create, memmode); |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2140 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2141 /* ??? Should we return NULL if we're not to create an entry, the |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2142 found loc is a debug loc and cselib_current_insn is not DEBUG? |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2143 If so, we should also avoid converting val to non-DEBUG; probably |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2144 easiest setting cselib_current_insn to NULL before the call |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2145 above. */ |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2146 |
|
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
|
2147 if (dump_file && (dump_flags & TDF_CSELIB)) |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2148 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2149 fputs ("cselib lookup ", dump_file); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2150 print_inline_rtx (dump_file, x, 2); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2151 fprintf (dump_file, " => %u:%u\n", |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2152 ret ? ret->uid : 0, |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2153 ret ? ret->hash : 0); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2154 } |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2155 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2156 return ret; |
| 0 | 2157 } |
| 2158 | |
| 145 | 2159 /* Invalidate the value at *L, which is part of REG_VALUES (REGNO). */ |
| 2160 | |
| 2161 static void | |
| 2162 cselib_invalidate_regno_val (unsigned int regno, struct elt_list **l) | |
| 2163 { | |
| 2164 cselib_val *v = (*l)->elt; | |
| 2165 if (*l == REG_VALUES (regno)) | |
| 2166 { | |
| 2167 /* Maintain the invariant that the first entry of | |
| 2168 REG_VALUES, if present, must be the value used to set | |
| 2169 the register, or NULL. This is also nice because | |
| 2170 then we won't push the same regno onto user_regs | |
| 2171 multiple times. */ | |
| 2172 (*l)->elt = NULL; | |
| 2173 l = &(*l)->next; | |
| 2174 } | |
| 2175 else | |
| 2176 unchain_one_elt_list (l); | |
| 2177 | |
| 2178 v = canonical_cselib_val (v); | |
| 2179 | |
| 2180 bool had_locs = v->locs != NULL; | |
| 2181 rtx_insn *setting_insn = v->locs ? v->locs->setting_insn : NULL; | |
| 2182 | |
| 2183 /* Now, we clear the mapping from value to reg. It must exist, so | |
| 2184 this code will crash intentionally if it doesn't. */ | |
| 2185 for (elt_loc_list **p = &v->locs; ; p = &(*p)->next) | |
| 2186 { | |
| 2187 rtx x = (*p)->loc; | |
| 2188 | |
| 2189 if (REG_P (x) && REGNO (x) == regno) | |
| 2190 { | |
| 2191 unchain_one_elt_loc_list (p); | |
| 2192 break; | |
| 2193 } | |
| 2194 } | |
| 2195 | |
| 2196 if (had_locs && v->locs == 0 && !PRESERVED_VALUE_P (v->val_rtx)) | |
| 2197 { | |
| 2198 if (setting_insn && DEBUG_INSN_P (setting_insn)) | |
| 2199 n_useless_debug_values++; | |
| 2200 else | |
| 2201 n_useless_values++; | |
| 2202 } | |
| 2203 } | |
| 2204 | |
| 0 | 2205 /* Invalidate any entries in reg_values that overlap REGNO. This is called |
| 2206 if REGNO is changing. MODE is the mode of the assignment to REGNO, which | |
| 2207 is used to determine how many hard registers are being changed. If MODE | |
| 2208 is VOIDmode, then only REGNO is being changed; this is used when | |
| 2209 invalidating call clobbered registers across a call. */ | |
| 2210 | |
| 2211 static void | |
| 145 | 2212 cselib_invalidate_regno (unsigned int regno, machine_mode mode) |
| 0 | 2213 { |
| 2214 unsigned int endregno; | |
| 2215 unsigned int i; | |
| 2216 | |
| 2217 /* If we see pseudos after reload, something is _wrong_. */ | |
| 2218 gcc_assert (!reload_completed || regno < FIRST_PSEUDO_REGISTER | |
| 2219 || reg_renumber[regno] < 0); | |
| 2220 | |
| 2221 /* Determine the range of registers that must be invalidated. For | |
| 2222 pseudos, only REGNO is affected. For hard regs, we must take MODE | |
| 2223 into account, and we must also invalidate lower register numbers | |
| 2224 if they contain values that overlap REGNO. */ | |
| 2225 if (regno < FIRST_PSEUDO_REGISTER) | |
| 2226 { | |
| 2227 gcc_assert (mode != VOIDmode); | |
| 2228 | |
| 2229 if (regno < max_value_regs) | |
| 2230 i = 0; | |
| 2231 else | |
| 2232 i = regno - max_value_regs; | |
| 2233 | |
| 2234 endregno = end_hard_regno (mode, regno); | |
| 2235 } | |
| 2236 else | |
| 2237 { | |
| 2238 i = regno; | |
| 2239 endregno = regno + 1; | |
| 2240 } | |
| 2241 | |
| 2242 for (; i < endregno; i++) | |
| 2243 { | |
| 2244 struct elt_list **l = ®_VALUES (i); | |
| 2245 | |
| 2246 /* Go through all known values for this reg; if it overlaps the range | |
| 2247 we're invalidating, remove the value. */ | |
| 2248 while (*l) | |
| 2249 { | |
| 2250 cselib_val *v = (*l)->elt; | |
| 2251 unsigned int this_last = i; | |
| 2252 | |
| 2253 if (i < FIRST_PSEUDO_REGISTER && v != NULL) | |
| 2254 this_last = end_hard_regno (GET_MODE (v->val_rtx), i) - 1; | |
| 2255 | |
|
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
|
2256 if (this_last < regno || v == NULL |
|
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
|
2257 || (v == cfa_base_preserved_val |
|
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
|
2258 && i == cfa_base_preserved_regno)) |
| 0 | 2259 { |
| 2260 l = &(*l)->next; | |
| 2261 continue; | |
| 2262 } | |
| 2263 | |
| 2264 /* We have an overlap. */ | |
| 145 | 2265 cselib_invalidate_regno_val (i, l); |
| 0 | 2266 } |
| 2267 } | |
| 2268 } | |
| 2269 | |
| 2270 /* Invalidate any locations in the table which are changed because of a | |
| 2271 store to MEM_RTX. If this is called because of a non-const call | |
| 2272 instruction, MEM_RTX is (mem:BLK const0_rtx). */ | |
| 2273 | |
| 2274 static void | |
| 2275 cselib_invalidate_mem (rtx mem_rtx) | |
| 2276 { | |
| 2277 cselib_val **vp, *v, *next; | |
| 2278 int num_mems = 0; | |
| 2279 rtx mem_addr; | |
| 2280 | |
| 2281 mem_addr = canon_rtx (get_addr (XEXP (mem_rtx, 0))); | |
| 2282 mem_rtx = canon_rtx (mem_rtx); | |
| 2283 | |
| 2284 vp = &first_containing_mem; | |
| 2285 for (v = *vp; v != &dummy_val; v = next) | |
| 2286 { | |
| 2287 bool has_mem = false; | |
| 2288 struct elt_loc_list **p = &v->locs; | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2289 bool had_locs = v->locs != NULL; |
| 111 | 2290 rtx_insn *setting_insn = v->locs ? v->locs->setting_insn : NULL; |
| 0 | 2291 |
| 2292 while (*p) | |
| 2293 { | |
| 2294 rtx x = (*p)->loc; | |
| 2295 cselib_val *addr; | |
| 2296 struct elt_list **mem_chain; | |
| 2297 | |
| 2298 /* MEMs may occur in locations only at the top level; below | |
| 2299 that every MEM or REG is substituted by its VALUE. */ | |
| 2300 if (!MEM_P (x)) | |
| 2301 { | |
| 2302 p = &(*p)->next; | |
| 2303 continue; | |
| 2304 } | |
| 145 | 2305 if (num_mems < param_max_cselib_memory_locations |
| 111 | 2306 && ! canon_anti_dependence (x, false, mem_rtx, |
| 2307 GET_MODE (mem_rtx), mem_addr)) | |
| 0 | 2308 { |
| 2309 has_mem = true; | |
| 2310 num_mems++; | |
| 2311 p = &(*p)->next; | |
| 2312 continue; | |
| 2313 } | |
| 2314 | |
| 2315 /* This one overlaps. */ | |
| 2316 /* We must have a mapping from this MEM's address to the | |
| 2317 value (E). Remove that, too. */ | |
|
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
|
2318 addr = cselib_lookup (XEXP (x, 0), VOIDmode, 0, GET_MODE (x)); |
| 111 | 2319 addr = canonical_cselib_val (addr); |
| 2320 gcc_checking_assert (v == canonical_cselib_val (v)); | |
| 0 | 2321 mem_chain = &addr->addr_list; |
| 2322 for (;;) | |
| 2323 { | |
| 111 | 2324 cselib_val *canon = canonical_cselib_val ((*mem_chain)->elt); |
| 2325 | |
| 2326 if (canon == v) | |
| 0 | 2327 { |
| 2328 unchain_one_elt_list (mem_chain); | |
| 2329 break; | |
| 2330 } | |
| 2331 | |
| 111 | 2332 /* Record canonicalized elt. */ |
| 2333 (*mem_chain)->elt = canon; | |
| 2334 | |
| 0 | 2335 mem_chain = &(*mem_chain)->next; |
| 2336 } | |
| 2337 | |
| 2338 unchain_one_elt_loc_list (p); | |
| 2339 } | |
| 2340 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2341 if (had_locs && v->locs == 0 && !PRESERVED_VALUE_P (v->val_rtx)) |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2342 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2343 if (setting_insn && DEBUG_INSN_P (setting_insn)) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2344 n_useless_debug_values++; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2345 else |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2346 n_useless_values++; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2347 } |
| 0 | 2348 |
| 2349 next = v->next_containing_mem; | |
| 2350 if (has_mem) | |
| 2351 { | |
| 2352 *vp = v; | |
| 2353 vp = &(*vp)->next_containing_mem; | |
| 2354 } | |
| 2355 else | |
| 2356 v->next_containing_mem = NULL; | |
| 2357 } | |
| 2358 *vp = &dummy_val; | |
| 2359 } | |
| 2360 | |
| 145 | 2361 /* Invalidate DEST. */ |
| 0 | 2362 |
| 2363 void | |
| 145 | 2364 cselib_invalidate_rtx (rtx dest) |
| 0 | 2365 { |
| 2366 while (GET_CODE (dest) == SUBREG | |
| 2367 || GET_CODE (dest) == ZERO_EXTRACT | |
| 2368 || GET_CODE (dest) == STRICT_LOW_PART) | |
| 2369 dest = XEXP (dest, 0); | |
| 2370 | |
| 2371 if (REG_P (dest)) | |
| 145 | 2372 cselib_invalidate_regno (REGNO (dest), GET_MODE (dest)); |
| 0 | 2373 else if (MEM_P (dest)) |
| 2374 cselib_invalidate_mem (dest); | |
| 2375 } | |
| 2376 | |
| 2377 /* A wrapper for cselib_invalidate_rtx to be called via note_stores. */ | |
| 2378 | |
| 2379 static void | |
| 145 | 2380 cselib_invalidate_rtx_note_stores (rtx dest, const_rtx, |
| 0 | 2381 void *data ATTRIBUTE_UNUSED) |
| 2382 { | |
| 145 | 2383 cselib_invalidate_rtx (dest); |
| 0 | 2384 } |
| 2385 | |
| 2386 /* Record the result of a SET instruction. DEST is being set; the source | |
| 2387 contains the value described by SRC_ELT. If DEST is a MEM, DEST_ADDR_ELT | |
| 2388 describes its address. */ | |
| 2389 | |
| 2390 static void | |
| 2391 cselib_record_set (rtx dest, cselib_val *src_elt, cselib_val *dest_addr_elt) | |
| 2392 { | |
| 2393 if (src_elt == 0 || side_effects_p (dest)) | |
| 2394 return; | |
| 2395 | |
| 111 | 2396 if (REG_P (dest)) |
| 0 | 2397 { |
| 111 | 2398 unsigned int dreg = REGNO (dest); |
| 0 | 2399 if (dreg < FIRST_PSEUDO_REGISTER) |
| 2400 { | |
| 111 | 2401 unsigned int n = REG_NREGS (dest); |
| 0 | 2402 |
| 2403 if (n > max_value_regs) | |
| 2404 max_value_regs = n; | |
| 2405 } | |
| 2406 | |
| 2407 if (REG_VALUES (dreg) == 0) | |
| 2408 { | |
| 2409 used_regs[n_used_regs++] = dreg; | |
| 2410 REG_VALUES (dreg) = new_elt_list (REG_VALUES (dreg), src_elt); | |
| 2411 } | |
| 2412 else | |
| 2413 { | |
| 2414 /* The register should have been invalidated. */ | |
| 2415 gcc_assert (REG_VALUES (dreg)->elt == 0); | |
| 2416 REG_VALUES (dreg)->elt = src_elt; | |
| 2417 } | |
| 2418 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2419 if (src_elt->locs == 0 && !PRESERVED_VALUE_P (src_elt->val_rtx)) |
| 0 | 2420 n_useless_values--; |
| 111 | 2421 new_elt_loc_list (src_elt, dest); |
| 0 | 2422 } |
| 2423 else if (MEM_P (dest) && dest_addr_elt != 0 | |
| 2424 && cselib_record_memory) | |
| 2425 { | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2426 if (src_elt->locs == 0 && !PRESERVED_VALUE_P (src_elt->val_rtx)) |
| 0 | 2427 n_useless_values--; |
| 2428 add_mem_for_addr (dest_addr_elt, src_elt, dest); | |
| 2429 } | |
| 2430 } | |
| 2431 | |
| 111 | 2432 /* Make ELT and X's VALUE equivalent to each other at INSN. */ |
| 2433 | |
| 2434 void | |
| 2435 cselib_add_permanent_equiv (cselib_val *elt, rtx x, rtx_insn *insn) | |
| 2436 { | |
| 2437 cselib_val *nelt; | |
| 2438 rtx_insn *save_cselib_current_insn = cselib_current_insn; | |
| 2439 | |
| 2440 gcc_checking_assert (elt); | |
| 2441 gcc_checking_assert (PRESERVED_VALUE_P (elt->val_rtx)); | |
| 2442 gcc_checking_assert (!side_effects_p (x)); | |
| 2443 | |
| 2444 cselib_current_insn = insn; | |
| 2445 | |
| 2446 nelt = cselib_lookup (x, GET_MODE (elt->val_rtx), 1, VOIDmode); | |
| 2447 | |
| 2448 if (nelt != elt) | |
| 2449 { | |
| 2450 cselib_any_perm_equivs = true; | |
| 2451 | |
| 2452 if (!PRESERVED_VALUE_P (nelt->val_rtx)) | |
| 2453 cselib_preserve_value (nelt); | |
| 2454 | |
| 2455 new_elt_loc_list (nelt, elt->val_rtx); | |
| 2456 } | |
| 2457 | |
| 2458 cselib_current_insn = save_cselib_current_insn; | |
| 2459 } | |
| 2460 | |
| 2461 /* Return TRUE if any permanent equivalences have been recorded since | |
| 2462 the table was last initialized. */ | |
| 2463 bool | |
| 2464 cselib_have_permanent_equivalences (void) | |
| 2465 { | |
| 2466 return cselib_any_perm_equivs; | |
| 2467 } | |
| 2468 | |
| 0 | 2469 /* There is no good way to determine how many elements there can be |
| 2470 in a PARALLEL. Since it's fairly cheap, use a really large number. */ | |
| 2471 #define MAX_SETS (FIRST_PSEUDO_REGISTER * 2) | |
| 2472 | |
|
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
|
2473 struct cselib_record_autoinc_data |
|
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
|
2474 { |
|
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
|
2475 struct cselib_set *sets; |
|
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
|
2476 int n_sets; |
|
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
|
2477 }; |
|
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
|
2478 |
|
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
|
2479 /* Callback for for_each_inc_dec. Records in ARG the SETs implied by |
|
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
|
2480 autoinc RTXs: SRC plus SRCOFF if non-NULL is stored in DEST. */ |
|
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
|
2481 |
|
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
|
2482 static int |
|
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
|
2483 cselib_record_autoinc_cb (rtx mem ATTRIBUTE_UNUSED, rtx op ATTRIBUTE_UNUSED, |
|
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
|
2484 rtx dest, rtx src, rtx srcoff, void *arg) |
|
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
|
2485 { |
|
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
|
2486 struct cselib_record_autoinc_data *data; |
|
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
|
2487 data = (struct cselib_record_autoinc_data *)arg; |
|
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
|
2488 |
|
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
|
2489 data->sets[data->n_sets].dest = dest; |
|
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
|
2490 |
|
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
|
2491 if (srcoff) |
|
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
|
2492 data->sets[data->n_sets].src = gen_rtx_PLUS (GET_MODE (src), src, srcoff); |
|
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
|
2493 else |
|
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
|
2494 data->sets[data->n_sets].src = src; |
|
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
|
2495 |
|
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
|
2496 data->n_sets++; |
|
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
|
2497 |
| 111 | 2498 return 0; |
|
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
|
2499 } |
|
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
|
2500 |
|
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
|
2501 /* Record the effects of any sets and autoincs in INSN. */ |
| 0 | 2502 static void |
| 111 | 2503 cselib_record_sets (rtx_insn *insn) |
| 0 | 2504 { |
| 2505 int n_sets = 0; | |
| 2506 int i; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2507 struct cselib_set sets[MAX_SETS]; |
| 0 | 2508 rtx cond = 0; |
|
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
|
2509 int n_sets_before_autoinc; |
| 131 | 2510 int n_strict_low_parts = 0; |
|
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
|
2511 struct cselib_record_autoinc_data data; |
| 0 | 2512 |
| 145 | 2513 rtx body = PATTERN (insn); |
| 0 | 2514 if (GET_CODE (body) == COND_EXEC) |
| 2515 { | |
| 2516 cond = COND_EXEC_TEST (body); | |
| 2517 body = COND_EXEC_CODE (body); | |
| 2518 } | |
| 2519 | |
| 2520 /* Find all sets. */ | |
| 2521 if (GET_CODE (body) == SET) | |
| 2522 { | |
| 2523 sets[0].src = SET_SRC (body); | |
| 2524 sets[0].dest = SET_DEST (body); | |
| 2525 n_sets = 1; | |
| 2526 } | |
| 2527 else if (GET_CODE (body) == PARALLEL) | |
| 2528 { | |
| 2529 /* Look through the PARALLEL and record the values being | |
| 2530 set, if possible. Also handle any CLOBBERs. */ | |
| 2531 for (i = XVECLEN (body, 0) - 1; i >= 0; --i) | |
| 2532 { | |
| 2533 rtx x = XVECEXP (body, 0, i); | |
| 2534 | |
| 2535 if (GET_CODE (x) == SET) | |
| 2536 { | |
| 2537 sets[n_sets].src = SET_SRC (x); | |
| 2538 sets[n_sets].dest = SET_DEST (x); | |
| 2539 n_sets++; | |
| 2540 } | |
| 2541 } | |
| 2542 } | |
| 2543 | |
| 2544 if (n_sets == 1 | |
| 2545 && MEM_P (sets[0].src) | |
| 2546 && !cselib_record_memory | |
| 2547 && MEM_READONLY_P (sets[0].src)) | |
| 2548 { | |
| 2549 rtx note = find_reg_equal_equiv_note (insn); | |
| 2550 | |
| 2551 if (note && CONSTANT_P (XEXP (note, 0))) | |
| 2552 sets[0].src = XEXP (note, 0); | |
| 2553 } | |
| 2554 | |
|
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
|
2555 data.sets = sets; |
|
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
|
2556 data.n_sets = n_sets_before_autoinc = n_sets; |
| 111 | 2557 for_each_inc_dec (PATTERN (insn), cselib_record_autoinc_cb, &data); |
|
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
|
2558 n_sets = data.n_sets; |
|
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
|
2559 |
| 0 | 2560 /* Look up the values that are read. Do this before invalidating the |
| 2561 locations that are written. */ | |
| 2562 for (i = 0; i < n_sets; i++) | |
| 2563 { | |
| 2564 rtx dest = sets[i].dest; | |
| 131 | 2565 rtx orig = dest; |
| 0 | 2566 |
| 2567 /* A STRICT_LOW_PART can be ignored; we'll record the equivalence for | |
| 2568 the low part after invalidating any knowledge about larger modes. */ | |
| 2569 if (GET_CODE (sets[i].dest) == STRICT_LOW_PART) | |
| 2570 sets[i].dest = dest = XEXP (dest, 0); | |
| 2571 | |
| 2572 /* We don't know how to record anything but REG or MEM. */ | |
| 2573 if (REG_P (dest) | |
| 2574 || (MEM_P (dest) && cselib_record_memory)) | |
| 2575 { | |
| 2576 rtx src = sets[i].src; | |
| 2577 if (cond) | |
| 2578 src = gen_rtx_IF_THEN_ELSE (GET_MODE (dest), cond, src, dest); | |
|
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
|
2579 sets[i].src_elt = cselib_lookup (src, GET_MODE (dest), 1, VOIDmode); |
| 0 | 2580 if (MEM_P (dest)) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2581 { |
| 111 | 2582 machine_mode address_mode = get_address_mode (dest); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2583 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2584 sets[i].dest_addr_elt = cselib_lookup (XEXP (dest, 0), |
|
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
|
2585 address_mode, 1, |
|
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
|
2586 GET_MODE (dest)); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2587 } |
| 0 | 2588 else |
| 2589 sets[i].dest_addr_elt = 0; | |
| 2590 } | |
| 131 | 2591 |
| 2592 /* Improve handling of STRICT_LOW_PART if the current value is known | |
| 2593 to be const0_rtx, then the low bits will be set to dest and higher | |
| 2594 bits will remain zero. Used in code like: | |
| 2595 | |
| 2596 {di:SI=0;clobber flags:CC;} | |
| 2597 flags:CCNO=cmp(bx:SI,0) | |
| 2598 strict_low_part(di:QI)=flags:CCNO<=0 | |
| 2599 | |
| 2600 where we can note both that di:QI=flags:CCNO<=0 and | |
| 2601 also that because di:SI is known to be 0 and strict_low_part(di:QI) | |
| 2602 preserves the upper bits that di:SI=zero_extend(flags:CCNO<=0). */ | |
| 2603 scalar_int_mode mode; | |
| 2604 if (dest != orig | |
| 2605 && cselib_record_sets_hook | |
| 2606 && REG_P (dest) | |
| 2607 && HARD_REGISTER_P (dest) | |
| 145 | 2608 && sets[i].src_elt |
| 131 | 2609 && is_a <scalar_int_mode> (GET_MODE (dest), &mode) |
| 2610 && n_sets + n_strict_low_parts < MAX_SETS) | |
| 2611 { | |
| 2612 opt_scalar_int_mode wider_mode_iter; | |
| 2613 FOR_EACH_WIDER_MODE (wider_mode_iter, mode) | |
| 2614 { | |
| 2615 scalar_int_mode wider_mode = wider_mode_iter.require (); | |
| 2616 if (GET_MODE_PRECISION (wider_mode) > BITS_PER_WORD) | |
| 2617 break; | |
| 2618 | |
| 2619 rtx reg = gen_lowpart (wider_mode, dest); | |
| 2620 if (!REG_P (reg)) | |
| 2621 break; | |
| 2622 | |
| 2623 cselib_val *v = cselib_lookup (reg, wider_mode, 0, VOIDmode); | |
| 2624 if (!v) | |
| 2625 continue; | |
| 2626 | |
| 2627 struct elt_loc_list *l; | |
| 2628 for (l = v->locs; l; l = l->next) | |
| 2629 if (l->loc == const0_rtx) | |
| 2630 break; | |
| 2631 | |
| 2632 if (!l) | |
| 2633 continue; | |
| 2634 | |
| 2635 sets[n_sets + n_strict_low_parts].dest = reg; | |
| 2636 sets[n_sets + n_strict_low_parts].src = dest; | |
| 2637 sets[n_sets + n_strict_low_parts++].src_elt = sets[i].src_elt; | |
| 2638 break; | |
| 2639 } | |
| 2640 } | |
| 0 | 2641 } |
| 2642 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2643 if (cselib_record_sets_hook) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2644 cselib_record_sets_hook (insn, sets, n_sets); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2645 |
| 0 | 2646 /* Invalidate all locations written by this insn. Note that the elts we |
| 2647 looked up in the previous loop aren't affected, just some of their | |
| 2648 locations may go away. */ | |
| 145 | 2649 note_pattern_stores (body, cselib_invalidate_rtx_note_stores, NULL); |
| 0 | 2650 |
|
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
|
2651 for (i = n_sets_before_autoinc; i < n_sets; 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
|
2652 cselib_invalidate_rtx (sets[i].dest); |
|
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
|
2653 |
| 0 | 2654 /* If this is an asm, look for duplicate sets. This can happen when the |
| 2655 user uses the same value as an output multiple times. This is valid | |
| 2656 if the outputs are not actually used thereafter. Treat this case as | |
| 2657 if the value isn't actually set. We do this by smashing the destination | |
| 2658 to pc_rtx, so that we won't record the value later. */ | |
| 2659 if (n_sets >= 2 && asm_noperands (body) >= 0) | |
| 2660 { | |
| 2661 for (i = 0; i < n_sets; i++) | |
| 2662 { | |
| 2663 rtx dest = sets[i].dest; | |
| 2664 if (REG_P (dest) || MEM_P (dest)) | |
| 2665 { | |
| 2666 int j; | |
| 2667 for (j = i + 1; j < n_sets; j++) | |
| 2668 if (rtx_equal_p (dest, sets[j].dest)) | |
| 2669 { | |
| 2670 sets[i].dest = pc_rtx; | |
| 2671 sets[j].dest = pc_rtx; | |
| 2672 } | |
| 2673 } | |
| 2674 } | |
| 2675 } | |
| 2676 | |
| 2677 /* Now enter the equivalences in our tables. */ | |
| 2678 for (i = 0; i < n_sets; i++) | |
| 2679 { | |
| 2680 rtx dest = sets[i].dest; | |
| 2681 if (REG_P (dest) | |
| 2682 || (MEM_P (dest) && cselib_record_memory)) | |
| 2683 cselib_record_set (dest, sets[i].src_elt, sets[i].dest_addr_elt); | |
| 2684 } | |
| 131 | 2685 |
| 2686 /* And deal with STRICT_LOW_PART. */ | |
| 2687 for (i = 0; i < n_strict_low_parts; i++) | |
| 2688 { | |
| 2689 if (! PRESERVED_VALUE_P (sets[n_sets + i].src_elt->val_rtx)) | |
| 2690 continue; | |
| 2691 machine_mode dest_mode = GET_MODE (sets[n_sets + i].dest); | |
| 2692 cselib_val *v | |
| 2693 = cselib_lookup (sets[n_sets + i].dest, dest_mode, 1, VOIDmode); | |
| 2694 cselib_preserve_value (v); | |
| 2695 rtx r = gen_rtx_ZERO_EXTEND (dest_mode, | |
| 2696 sets[n_sets + i].src_elt->val_rtx); | |
| 2697 cselib_add_permanent_equiv (v, r, insn); | |
| 2698 } | |
| 0 | 2699 } |
| 2700 | |
| 111 | 2701 /* Return true if INSN in the prologue initializes hard_frame_pointer_rtx. */ |
| 2702 | |
| 2703 bool | |
| 2704 fp_setter_insn (rtx_insn *insn) | |
| 2705 { | |
| 2706 rtx expr, pat = NULL_RTX; | |
| 2707 | |
| 2708 if (!RTX_FRAME_RELATED_P (insn)) | |
| 2709 return false; | |
| 2710 | |
| 2711 expr = find_reg_note (insn, REG_FRAME_RELATED_EXPR, NULL_RTX); | |
| 2712 if (expr) | |
| 2713 pat = XEXP (expr, 0); | |
| 2714 if (!modified_in_p (hard_frame_pointer_rtx, pat ? pat : insn)) | |
| 2715 return false; | |
| 2716 | |
| 2717 /* Don't return true for frame pointer restores in the epilogue. */ | |
| 2718 if (find_reg_note (insn, REG_CFA_RESTORE, hard_frame_pointer_rtx)) | |
| 2719 return false; | |
| 2720 return true; | |
| 2721 } | |
| 2722 | |
| 145 | 2723 /* V is one of the values in REG_VALUES (REGNO). Return true if it |
| 2724 would be invalidated by CALLEE_ABI. */ | |
| 2725 | |
| 2726 static bool | |
| 2727 cselib_invalidated_by_call_p (const function_abi &callee_abi, | |
| 2728 unsigned int regno, cselib_val *v) | |
| 2729 { | |
| 2730 machine_mode mode = GET_MODE (v->val_rtx); | |
| 2731 if (mode == VOIDmode) | |
| 2732 { | |
| 2733 v = REG_VALUES (regno)->elt; | |
| 2734 if (!v) | |
| 2735 /* If we don't know what the mode of the constant value is, and we | |
| 2736 don't know what mode the register was set in, conservatively | |
| 2737 assume that the register is clobbered. The value's going to be | |
| 2738 essentially useless in this case anyway. */ | |
| 2739 return true; | |
| 2740 mode = GET_MODE (v->val_rtx); | |
| 2741 } | |
| 2742 return callee_abi.clobbers_reg_p (mode, regno); | |
| 2743 } | |
| 2744 | |
| 0 | 2745 /* Record the effects of INSN. */ |
| 2746 | |
| 2747 void | |
| 111 | 2748 cselib_process_insn (rtx_insn *insn) |
| 0 | 2749 { |
| 2750 int i; | |
| 2751 rtx x; | |
| 2752 | |
| 2753 cselib_current_insn = insn; | |
| 2754 | |
| 111 | 2755 /* Forget everything at a CODE_LABEL or a setjmp. */ |
| 2756 if ((LABEL_P (insn) | |
| 2757 || (CALL_P (insn) | |
| 2758 && find_reg_note (insn, REG_SETJMP, NULL))) | |
| 2759 && !cselib_preserve_constants) | |
| 0 | 2760 { |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2761 cselib_reset_table (next_uid); |
| 111 | 2762 cselib_current_insn = NULL; |
| 0 | 2763 return; |
| 2764 } | |
| 2765 | |
| 2766 if (! INSN_P (insn)) | |
| 2767 { | |
| 111 | 2768 cselib_current_insn = NULL; |
| 0 | 2769 return; |
| 2770 } | |
| 2771 | |
| 2772 /* If this is a call instruction, forget anything stored in a | |
| 2773 call clobbered register, or, if this is not a const call, in | |
| 2774 memory. */ | |
| 2775 if (CALL_P (insn)) | |
| 2776 { | |
| 145 | 2777 function_abi callee_abi = insn_callee_abi (insn); |
| 0 | 2778 for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) |
| 145 | 2779 { |
| 2780 elt_list **l = ®_VALUES (i); | |
| 2781 while (*l) | |
| 2782 { | |
| 2783 cselib_val *v = (*l)->elt; | |
| 2784 if (v && cselib_invalidated_by_call_p (callee_abi, i, v)) | |
| 2785 cselib_invalidate_regno_val (i, l); | |
| 2786 else | |
| 2787 l = &(*l)->next; | |
| 2788 } | |
| 2789 } | |
| 0 | 2790 |
| 2791 /* Since it is not clear how cselib is going to be used, be | |
| 2792 conservative here and treat looping pure or const functions | |
| 2793 as if they were regular functions. */ | |
| 2794 if (RTL_LOOPING_CONST_OR_PURE_CALL_P (insn) | |
| 2795 || !(RTL_CONST_OR_PURE_CALL_P (insn))) | |
| 2796 cselib_invalidate_mem (callmem); | |
| 111 | 2797 else |
| 2798 /* For const/pure calls, invalidate any argument slots because | |
| 2799 they are owned by the callee. */ | |
| 2800 for (x = CALL_INSN_FUNCTION_USAGE (insn); x; x = XEXP (x, 1)) | |
| 2801 if (GET_CODE (XEXP (x, 0)) == USE | |
| 2802 && MEM_P (XEXP (XEXP (x, 0), 0))) | |
| 2803 cselib_invalidate_mem (XEXP (XEXP (x, 0), 0)); | |
| 0 | 2804 } |
| 2805 | |
| 2806 cselib_record_sets (insn); | |
| 2807 | |
| 2808 /* Look for any CLOBBERs in CALL_INSN_FUNCTION_USAGE, but only | |
| 2809 after we have processed the insn. */ | |
| 2810 if (CALL_P (insn)) | |
| 111 | 2811 { |
| 2812 for (x = CALL_INSN_FUNCTION_USAGE (insn); x; x = XEXP (x, 1)) | |
| 145 | 2813 if (GET_CODE (XEXP (x, 0)) == CLOBBER) |
| 2814 cselib_invalidate_rtx (XEXP (XEXP (x, 0), 0)); | |
| 2815 | |
| 131 | 2816 /* Flush everything on setjmp. */ |
| 111 | 2817 if (cselib_preserve_constants |
| 2818 && find_reg_note (insn, REG_SETJMP, NULL)) | |
| 2819 { | |
| 2820 cselib_preserve_only_values (); | |
| 2821 cselib_reset_table (next_uid); | |
| 2822 } | |
| 2823 } | |
| 2824 | |
| 2825 /* On setter of the hard frame pointer if frame_pointer_needed, | |
| 2826 invalidate stack_pointer_rtx, so that sp and {,h}fp based | |
| 2827 VALUEs are distinct. */ | |
| 2828 if (reload_completed | |
| 2829 && frame_pointer_needed | |
| 2830 && fp_setter_insn (insn)) | |
| 2831 cselib_invalidate_rtx (stack_pointer_rtx); | |
| 2832 | |
| 2833 cselib_current_insn = NULL; | |
| 0 | 2834 |
| 2835 if (n_useless_values > MAX_USELESS_VALUES | |
| 2836 /* remove_useless_values is linear in the hash table size. Avoid | |
| 2837 quadratic behavior for very large hashtables with very few | |
| 2838 useless elements. */ | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2839 && ((unsigned int)n_useless_values |
| 111 | 2840 > (cselib_hash_table->elements () - n_debug_values) / 4)) |
| 0 | 2841 remove_useless_values (); |
| 2842 } | |
| 2843 | |
| 2844 /* Initialize cselib for one pass. The caller must also call | |
| 2845 init_alias_analysis. */ | |
| 2846 | |
| 2847 void | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2848 cselib_init (int record_what) |
| 0 | 2849 { |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2850 cselib_record_memory = record_what & CSELIB_RECORD_MEMORY; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2851 cselib_preserve_constants = record_what & CSELIB_PRESERVE_CONSTANTS; |
| 111 | 2852 cselib_any_perm_equivs = false; |
| 0 | 2853 |
| 2854 /* (mem:BLK (scratch)) is a special mechanism to conflict with everything, | |
| 2855 see canon_true_dependence. This is only created once. */ | |
| 2856 if (! callmem) | |
| 2857 callmem = gen_rtx_MEM (BLKmode, gen_rtx_SCRATCH (VOIDmode)); | |
| 2858 | |
| 2859 cselib_nregs = max_reg_num (); | |
| 2860 | |
| 2861 /* We preserve reg_values to allow expensive clearing of the whole thing. | |
| 2862 Reallocate it however if it happens to be too large. */ | |
| 2863 if (!reg_values || reg_values_size < cselib_nregs | |
| 2864 || (reg_values_size > 10 && reg_values_size > cselib_nregs * 4)) | |
| 2865 { | |
| 111 | 2866 free (reg_values); |
| 0 | 2867 /* Some space for newly emit instructions so we don't end up |
| 2868 reallocating in between passes. */ | |
| 2869 reg_values_size = cselib_nregs + (63 + cselib_nregs) / 16; | |
| 2870 reg_values = XCNEWVEC (struct elt_list *, reg_values_size); | |
| 2871 } | |
| 2872 used_regs = XNEWVEC (unsigned int, cselib_nregs); | |
| 2873 n_used_regs = 0; | |
| 145 | 2874 /* FIXME: enable sanitization (PR87845) */ |
| 2875 cselib_hash_table | |
| 2876 = new hash_table<cselib_hasher> (31, /* ggc */ false, | |
| 2877 /* sanitize_eq_and_hash */ false); | |
| 111 | 2878 if (cselib_preserve_constants) |
| 145 | 2879 cselib_preserved_hash_table |
| 2880 = new hash_table<cselib_hasher> (31, /* ggc */ false, | |
| 2881 /* sanitize_eq_and_hash */ false); | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2882 next_uid = 1; |
| 0 | 2883 } |
| 2884 | |
| 2885 /* Called when the current user is done with cselib. */ | |
| 2886 | |
| 2887 void | |
| 2888 cselib_finish (void) | |
| 2889 { | |
| 111 | 2890 bool preserved = cselib_preserve_constants; |
| 0 | 2891 cselib_discard_hook = NULL; |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2892 cselib_preserve_constants = false; |
| 111 | 2893 cselib_any_perm_equivs = false; |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2894 cfa_base_preserved_val = NULL; |
|
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
|
2895 cfa_base_preserved_regno = INVALID_REGNUM; |
| 111 | 2896 elt_list_pool.release (); |
| 2897 elt_loc_list_pool.release (); | |
| 2898 cselib_val_pool.release (); | |
| 2899 value_pool.release (); | |
| 0 | 2900 cselib_clear_table (); |
| 111 | 2901 delete cselib_hash_table; |
| 2902 cselib_hash_table = NULL; | |
| 2903 if (preserved) | |
| 2904 delete cselib_preserved_hash_table; | |
| 2905 cselib_preserved_hash_table = NULL; | |
| 0 | 2906 free (used_regs); |
| 2907 used_regs = 0; | |
| 2908 n_useless_values = 0; | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2909 n_useless_debug_values = 0; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2910 n_debug_values = 0; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2911 next_uid = 0; |
| 0 | 2912 } |
| 2913 | |
| 111 | 2914 /* Dump the cselib_val *X to FILE *OUT. */ |
| 2915 | |
| 2916 int | |
| 2917 dump_cselib_val (cselib_val **x, FILE *out) | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2918 { |
| 111 | 2919 cselib_val *v = *x; |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2920 bool need_lf = true; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2921 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2922 print_inline_rtx (out, v->val_rtx, 0); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2923 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2924 if (v->locs) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2925 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2926 struct elt_loc_list *l = v->locs; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2927 if (need_lf) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2928 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2929 fputc ('\n', out); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2930 need_lf = false; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2931 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2932 fputs (" locs:", out); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2933 do |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2934 { |
| 111 | 2935 if (l->setting_insn) |
| 2936 fprintf (out, "\n from insn %i ", | |
| 2937 INSN_UID (l->setting_insn)); | |
| 2938 else | |
| 2939 fprintf (out, "\n "); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2940 print_inline_rtx (out, l->loc, 4); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2941 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2942 while ((l = l->next)); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2943 fputc ('\n', out); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2944 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2945 else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2946 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2947 fputs (" no locs", out); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2948 need_lf = true; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2949 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2950 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2951 if (v->addr_list) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2952 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2953 struct elt_list *e = v->addr_list; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2954 if (need_lf) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2955 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2956 fputc ('\n', out); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2957 need_lf = false; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2958 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2959 fputs (" addr list:", out); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2960 do |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2961 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2962 fputs ("\n ", out); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2963 print_inline_rtx (out, e->elt->val_rtx, 2); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2964 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2965 while ((e = e->next)); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2966 fputc ('\n', out); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2967 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2968 else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2969 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2970 fputs (" no addrs", out); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2971 need_lf = true; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2972 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2973 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2974 if (v->next_containing_mem == &dummy_val) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2975 fputs (" last mem\n", out); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2976 else if (v->next_containing_mem) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2977 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2978 fputs (" next mem ", out); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2979 print_inline_rtx (out, v->next_containing_mem->val_rtx, 2); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2980 fputc ('\n', out); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2981 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2982 else if (need_lf) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2983 fputc ('\n', out); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2984 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2985 return 1; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2986 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2987 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2988 /* Dump to OUT everything in the CSELIB table. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2989 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2990 void |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2991 dump_cselib_table (FILE *out) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2992 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2993 fprintf (out, "cselib hash table:\n"); |
| 111 | 2994 cselib_hash_table->traverse <FILE *, dump_cselib_val> (out); |
| 2995 fprintf (out, "cselib preserved hash table:\n"); | |
| 2996 cselib_preserved_hash_table->traverse <FILE *, dump_cselib_val> (out); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2997 if (first_containing_mem != &dummy_val) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2998 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
2999 fputs ("first mem ", out); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
3000 print_inline_rtx (out, first_containing_mem->val_rtx, 2); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
3001 fputc ('\n', out); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
3002 } |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
3003 fprintf (out, "next uid %i\n", next_uid); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
3004 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
3005 |
| 0 | 3006 #include "gt-cselib.h" |