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annotate gcc/sese.h @ 56:3c8a44c06a95

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Added tag gcc-4.4.5 for changeset 77e2b8dfacca
author ryoma <e075725@ie.u-ryukyu.ac.jp>
date Fri, 12 Feb 2010 23:41:23 +0900
parents 77e2b8dfacca
children b7f97abdc517
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
55
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1 /* Single entry single exit control flow regions.
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2 Copyright (C) 2008, 2009 Free Software Foundation, Inc.
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3 Contributed by Jan Sjodin <jan.sjodin@amd.com> and
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4 Sebastian Pop <sebastian.pop@amd.com>.
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5
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6 This file is part of GCC.
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7
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8 GCC is free software; you can redistribute it and/or modify
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9 it under the terms of the GNU General Public License as published by
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10 the Free Software Foundation; either version 3, or (at your option)
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11 any later version.
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12
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13 GCC is distributed in the hope that it will be useful,
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14 but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 GNU General Public License for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with GCC; see the file COPYING3. If not see
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20 <http://www.gnu.org/licenses/>. */
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21
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22 #ifndef GCC_SESE_H
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23 #define GCC_SESE_H
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24
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25 /* A Single Entry, Single Exit region is a part of the CFG delimited
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26 by two edges. */
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27 typedef struct sese_s
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28 {
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29 /* Single ENTRY and single EXIT from the SESE region. */
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30 edge entry, exit;
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31
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32 /* Parameters used within the SCOP. */
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33 VEC (tree, heap) *params;
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34
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35 /* Loops completely contained in the SCOP. */
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36 bitmap loops;
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37 VEC (loop_p, heap) *loop_nest;
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38
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39 /* Are we allowed to add more params? This is for debugging purpose. We
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40 can only add new params before generating the bb domains, otherwise they
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41 become invalid. */
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42 bool add_params;
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43 } *sese;
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44
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45 #define SESE_ENTRY(S) (S->entry)
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46 #define SESE_ENTRY_BB(S) (S->entry->dest)
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47 #define SESE_EXIT(S) (S->exit)
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48 #define SESE_EXIT_BB(S) (S->exit->dest)
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49 #define SESE_PARAMS(S) (S->params)
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50 #define SESE_LOOPS(S) (S->loops)
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51 #define SESE_LOOP_NEST(S) (S->loop_nest)
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52 #define SESE_ADD_PARAMS(S) (S->add_params)
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53
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54 extern sese new_sese (edge, edge);
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55 extern void free_sese (sese);
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56 extern void sese_insert_phis_for_liveouts (sese, basic_block, edge, edge);
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57 extern void sese_adjust_liveout_phis (sese, htab_t, basic_block, edge, edge);
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58 extern void build_sese_loop_nests (sese);
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59 extern edge copy_bb_and_scalar_dependences (basic_block, sese, edge, htab_t);
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60 extern struct loop *outermost_loop_in_sese (sese, basic_block);
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61 extern void insert_loop_close_phis (htab_t, loop_p);
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62 extern void insert_guard_phis (basic_block, edge, edge, htab_t, htab_t);
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63 extern tree scalar_evolution_in_region (sese, loop_p, tree);
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64
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65 /* Check that SESE contains LOOP. */
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66
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67 static inline bool
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68 sese_contains_loop (sese sese, struct loop *loop)
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69 {
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70 return bitmap_bit_p (SESE_LOOPS (sese), loop->num);
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71 }
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72
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73 /* The number of parameters in REGION. */
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74
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75 static inline unsigned
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76 sese_nb_params (sese region)
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77 {
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78 return VEC_length (tree, SESE_PARAMS (region));
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79 }
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80
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81 /* Checks whether BB is contained in the region delimited by ENTRY and
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82 EXIT blocks. */
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83
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84 static inline bool
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85 bb_in_region (basic_block bb, basic_block entry, basic_block exit)
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86 {
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87 #ifdef ENABLE_CHECKING
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88 {
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89 edge e;
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90 edge_iterator ei;
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91
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92 /* Check that there are no edges coming in the region: all the
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93 predecessors of EXIT are dominated by ENTRY. */
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94 FOR_EACH_EDGE (e, ei, exit->preds)
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95 dominated_by_p (CDI_DOMINATORS, e->src, entry);
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96
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97 /* Check that there are no edges going out of the region: the
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98 entry is post-dominated by the exit. FIXME: This cannot be
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99 checked right now as the CDI_POST_DOMINATORS are needed. */
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100 }
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101 #endif
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102
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103 return dominated_by_p (CDI_DOMINATORS, bb, entry)
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104 && !(dominated_by_p (CDI_DOMINATORS, bb, exit)
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105 && !dominated_by_p (CDI_DOMINATORS, entry, exit));
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106 }
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107
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108 /* Checks whether BB is contained in the region delimited by ENTRY and
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109 EXIT blocks. */
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110
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111 static inline bool
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112 bb_in_sese_p (basic_block bb, sese region)
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113 {
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114 basic_block entry = SESE_ENTRY_BB (region);
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115 basic_block exit = SESE_EXIT_BB (region);
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116
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117 return bb_in_region (bb, entry, exit);
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118 }
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119
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120 /* Returns true when NAME is defined in REGION. */
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121
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
122 static inline bool
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
123 defined_in_sese_p (tree name, sese region)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
124 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
125 gimple stmt = SSA_NAME_DEF_STMT (name);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
126 basic_block bb = gimple_bb (stmt);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
127
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
128 return bb && bb_in_sese_p (bb, region);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
129 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
130
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
131 /* Returns true when LOOP is in REGION. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
132
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
133 static inline bool
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
134 loop_in_sese_p (struct loop *loop, sese region)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
135 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
136 return (bb_in_sese_p (loop->header, region)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
137 && bb_in_sese_p (loop->latch, region));
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
138 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
139
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
140 /* Returns the loop depth of LOOP in REGION. The loop depth
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
141 is the same as the normal loop depth, but limited by a region.
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
142
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
143 Example:
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
144
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
145 loop_0
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
146 loop_1
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
147 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
148 S0
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
149 <- region start
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
150 S1
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
151
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
152 loop_2
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
153 S2
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
154
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
155 S3
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
156 <- region end
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
157 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
158
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
159 loop_0 does not exist in the region -> invalid
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
160 loop_1 exists, but is not completely contained in the region -> depth 0
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
161 loop_2 is completely contained -> depth 1 */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
162
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
163 static inline unsigned int
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
164 sese_loop_depth (sese region, loop_p loop)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
165 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
166 unsigned int depth = 0;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
167
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
168 gcc_assert ((!loop_in_sese_p (loop, region)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
169 && (SESE_ENTRY_BB (region)->loop_father == loop
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
170 || SESE_EXIT (region)->src->loop_father == loop))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
171 || loop_in_sese_p (loop, region));
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
172
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
173 while (loop_in_sese_p (loop, region))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
174 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
175 depth++;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
176 loop = loop_outer (loop);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
177 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
178
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
179 return depth;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
180 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
181
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
182 /* Splits BB to make a single entry single exit region. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
183
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
184 static inline sese
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
185 split_region_for_bb (basic_block bb)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
186 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
187 edge entry, exit;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
188
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
189 if (single_pred_p (bb))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
190 entry = single_pred_edge (bb);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
191 else
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
192 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
193 entry = split_block_after_labels (bb);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
194 bb = single_succ (bb);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
195 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
196
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
197 if (single_succ_p (bb))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
198 exit = single_succ_edge (bb);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
199 else
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
200 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
201 gimple_stmt_iterator gsi = gsi_last_bb (bb);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
202 gsi_prev (&gsi);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
203 exit = split_block (bb, gsi_stmt (gsi));
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
204 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
205
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
206 return new_sese (entry, exit);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
207 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
208
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
209 /* Returns the block preceding the entry of a SESE. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
210
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
211 static inline basic_block
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
212 block_before_sese (sese sese)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
213 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
214 return SESE_ENTRY (sese)->src;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
215 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
216
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
217
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
218
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
219 /* A single entry single exit specialized for conditions. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
220
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
221 typedef struct ifsese_s {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
222 sese region;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
223 sese true_region;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
224 sese false_region;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
225 } *ifsese;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
226
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
227 extern void if_region_set_false_region (ifsese, sese);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
228 extern ifsese create_if_region_on_edge (edge, tree);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
229 extern ifsese move_sese_in_condition (sese);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
230 extern edge get_true_edge_from_guard_bb (basic_block);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
231 extern edge get_false_edge_from_guard_bb (basic_block);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
232
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
233 static inline edge
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
234 if_region_entry (ifsese if_region)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
235 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
236 return SESE_ENTRY (if_region->region);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
237 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
238
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
239 static inline edge
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
240 if_region_exit (ifsese if_region)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
241 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
242 return SESE_EXIT (if_region->region);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
243 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
244
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
245 static inline basic_block
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
246 if_region_get_condition_block (ifsese if_region)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
247 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
248 return if_region_entry (if_region)->dest;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
249 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
250
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
251 /* Structure containing the mapping between the old names and the new
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
252 names used after block copy in the new loop context. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
253 typedef struct rename_map_elt_s
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
254 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
255 tree old_name, expr;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
256 } *rename_map_elt;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
257
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
258 DEF_VEC_P(rename_map_elt);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
259 DEF_VEC_ALLOC_P (rename_map_elt, heap);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
260
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
261 extern void debug_rename_map (htab_t);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
262 extern hashval_t rename_map_elt_info (const void *);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
263 extern int eq_rename_map_elts (const void *, const void *);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
264 extern void set_rename (htab_t, tree, tree);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
265
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
266 /* Constructs a new SCEV_INFO_STR structure for VAR and INSTANTIATED_BELOW. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
267
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
268 static inline rename_map_elt
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
269 new_rename_map_elt (tree old_name, tree expr)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
270 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
271 rename_map_elt res;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
272
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
273 res = XNEW (struct rename_map_elt_s);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
274 res->old_name = old_name;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
275 res->expr = expr;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
276
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
277 return res;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
278 }
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
279
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
280 /* Structure containing the mapping between the CLooG's induction
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
281 variable and the type of the old induction variable. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
282 typedef struct ivtype_map_elt_s
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
283 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
284 tree type;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
285 const char *cloog_iv;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
286 } *ivtype_map_elt;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
287
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
288 extern void debug_ivtype_map (htab_t);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
289 extern hashval_t ivtype_map_elt_info (const void *);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
290 extern int eq_ivtype_map_elts (const void *, const void *);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
291
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
292 /* Constructs a new SCEV_INFO_STR structure for VAR and INSTANTIATED_BELOW. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
293
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
294 static inline ivtype_map_elt
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
295 new_ivtype_map_elt (const char *cloog_iv, tree type)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
296 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
297 ivtype_map_elt res;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
298
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
299 res = XNEW (struct ivtype_map_elt_s);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
300 res->cloog_iv = cloog_iv;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
301 res->type = type;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
302
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
303 return res;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
304 }
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
305
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
306 /* Free and compute again all the dominators information. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
307
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
308 static inline void
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
309 recompute_all_dominators (void)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
310 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
311 mark_irreducible_loops ();
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
312 free_dominance_info (CDI_DOMINATORS);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
313 free_dominance_info (CDI_POST_DOMINATORS);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
314 calculate_dominance_info (CDI_DOMINATORS);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
315 calculate_dominance_info (CDI_POST_DOMINATORS);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
316 }
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
317
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
318 typedef struct gimple_bb
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
319 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
320 basic_block bb;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
321
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
322 /* Lists containing the restrictions of the conditional statements
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
323 dominating this bb. This bb can only be executed, if all conditions
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
324 are true.
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
325
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
326 Example:
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
327
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
328 for (i = 0; i <= 20; i++)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
329 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
330 A
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
331
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
332 if (2i <= 8)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
333 B
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
334 }
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
335
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
336 So for B there is an additional condition (2i <= 8).
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
337
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
338 List of COND_EXPR and SWITCH_EXPR. A COND_EXPR is true only if the
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
339 corresponding element in CONDITION_CASES is not NULL_TREE. For a
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
340 SWITCH_EXPR the corresponding element in CONDITION_CASES is a
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
341 CASE_LABEL_EXPR. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
342 VEC (gimple, heap) *conditions;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
343 VEC (gimple, heap) *condition_cases;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
344 VEC (data_reference_p, heap) *data_refs;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
345 htab_t cloog_iv_types;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
346 } *gimple_bb_p;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
347
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
348 #define GBB_BB(GBB) GBB->bb
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
349 #define GBB_DATA_REFS(GBB) GBB->data_refs
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
350 #define GBB_CONDITIONS(GBB) GBB->conditions
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
351 #define GBB_CONDITION_CASES(GBB) GBB->condition_cases
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
352 #define GBB_CLOOG_IV_TYPES(GBB) GBB->cloog_iv_types
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
353
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
354 /* Return the innermost loop that contains the basic block GBB. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
355
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
356 static inline struct loop *
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
357 gbb_loop (struct gimple_bb *gbb)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
358 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
359 return GBB_BB (gbb)->loop_father;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
360 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
361
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
362 /* Returns the gimple loop, that corresponds to the loop_iterator_INDEX.
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
363 If there is no corresponding gimple loop, we return NULL. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
364
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
365 static inline loop_p
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
366 gbb_loop_at_index (gimple_bb_p gbb, sese region, int index)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
367 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
368 loop_p loop = gbb_loop (gbb);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
369 int depth = sese_loop_depth (region, loop);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
370
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
371 while (--depth > index)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
372 loop = loop_outer (loop);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
373
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
374 gcc_assert (sese_contains_loop (region, loop));
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
375
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
376 return loop;
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377 }
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378
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379 /* The number of common loops in REGION for GBB1 and GBB2. */
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380
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381 static inline int
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382 nb_common_loops (sese region, gimple_bb_p gbb1, gimple_bb_p gbb2)
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383 {
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384 loop_p l1 = gbb_loop (gbb1);
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385 loop_p l2 = gbb_loop (gbb2);
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386 loop_p common = find_common_loop (l1, l2);
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387
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388 return sese_loop_depth (region, common);
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389 }
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390
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391 extern void print_gimple_bb (FILE *, gimple_bb_p, int, int);
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392 extern void debug_gbb (gimple_bb_p, int);
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393
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394 #endif