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annotate gcc/sese.h @ 67:f6334be47118

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update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
author nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
date Tue, 22 Mar 2011 17:18:12 +0900
parents b7f97abdc517
children 04ced10e8804
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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55
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1 /* Single entry single exit control flow regions.
63
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2 Copyright (C) 2008, 2009, 2010
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3 Free Software Foundation, Inc.
55
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4 Contributed by Jan Sjodin <jan.sjodin@amd.com> and
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5 Sebastian Pop <sebastian.pop@amd.com>.
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6
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7 This file is part of GCC.
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8
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9 GCC is free software; you can redistribute it and/or modify
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10 it under the terms of the GNU General Public License as published by
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11 the Free Software Foundation; either version 3, or (at your option)
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12 any later version.
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13
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14 GCC is distributed in the hope that it will be useful,
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15 but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 GNU General Public License for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with GCC; see the file COPYING3. If not see
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21 <http://www.gnu.org/licenses/>. */
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22
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23 #ifndef GCC_SESE_H
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24 #define GCC_SESE_H
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25
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26 /* A Single Entry, Single Exit region is a part of the CFG delimited
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27 by two edges. */
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28 typedef struct sese_s
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29 {
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30 /* Single ENTRY and single EXIT from the SESE region. */
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31 edge entry, exit;
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32
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33 /* Parameters used within the SCOP. */
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34 VEC (tree, heap) *params;
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35
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36 /* Loops completely contained in the SCOP. */
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37 bitmap loops;
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38 VEC (loop_p, heap) *loop_nest;
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39
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40 /* Are we allowed to add more params? This is for debugging purpose. We
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41 can only add new params before generating the bb domains, otherwise they
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42 become invalid. */
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43 bool add_params;
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44 } *sese;
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45
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46 #define SESE_ENTRY(S) (S->entry)
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47 #define SESE_ENTRY_BB(S) (S->entry->dest)
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48 #define SESE_EXIT(S) (S->exit)
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49 #define SESE_EXIT_BB(S) (S->exit->dest)
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50 #define SESE_PARAMS(S) (S->params)
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51 #define SESE_LOOPS(S) (S->loops)
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52 #define SESE_LOOP_NEST(S) (S->loop_nest)
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53 #define SESE_ADD_PARAMS(S) (S->add_params)
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54
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55 extern sese new_sese (edge, edge);
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56 extern void free_sese (sese);
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57 extern void sese_insert_phis_for_liveouts (sese, 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,
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60 VEC (tree, heap) *);
55
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61 extern struct loop *outermost_loop_in_sese (sese, basic_block);
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62 extern void insert_loop_close_phis (htab_t, loop_p);
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63 extern void insert_guard_phis (basic_block, edge, edge, htab_t, htab_t);
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64 extern tree scalar_evolution_in_region (sese, loop_p, tree);
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65
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66 /* Check that SESE contains LOOP. */
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67
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68 static inline bool
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69 sese_contains_loop (sese sese, struct loop *loop)
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70 {
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71 return bitmap_bit_p (SESE_LOOPS (sese), loop->num);
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72 }
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73
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74 /* The number of parameters in REGION. */
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75
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76 static inline unsigned
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77 sese_nb_params (sese region)
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78 {
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79 return VEC_length (tree, SESE_PARAMS (region));
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80 }
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81
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82 /* Checks whether BB is contained in the region delimited by ENTRY and
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83 EXIT blocks. */
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84
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85 static inline bool
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86 bb_in_region (basic_block bb, basic_block entry, basic_block exit)
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87 {
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88 #ifdef ENABLE_CHECKING
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89 {
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90 edge e;
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91 edge_iterator ei;
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92
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93 /* Check that there are no edges coming in the region: all the
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94 predecessors of EXIT are dominated by ENTRY. */
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95 FOR_EACH_EDGE (e, ei, exit->preds)
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96 dominated_by_p (CDI_DOMINATORS, e->src, entry);
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97 }
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98 #endif
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99
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100 return dominated_by_p (CDI_DOMINATORS, bb, entry)
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101 && !(dominated_by_p (CDI_DOMINATORS, bb, exit)
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102 && !dominated_by_p (CDI_DOMINATORS, entry, exit));
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103 }
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104
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105 /* Checks whether BB is contained in the region delimited by ENTRY and
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106 EXIT blocks. */
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107
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108 static inline bool
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109 bb_in_sese_p (basic_block bb, sese region)
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110 {
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111 basic_block entry = SESE_ENTRY_BB (region);
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112 basic_block exit = SESE_EXIT_BB (region);
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113
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114 return bb_in_region (bb, entry, exit);
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115 }
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116
67
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117 /* Returns true when STMT is defined in REGION. */
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118
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119 static inline bool
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120 stmt_in_sese_p (gimple stmt, sese region)
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
121 {
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
122 basic_block bb = gimple_bb (stmt);
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
123 return bb && bb_in_sese_p (bb, region);
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
124 }
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
125
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
126 /* Returns true when NAME is defined in REGION. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
127
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
128 static inline bool
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
129 defined_in_sese_p (tree name, sese region)
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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 gimple stmt = SSA_NAME_DEF_STMT (name);
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
132 return stmt_in_sese_p (stmt, region);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
133 }
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
134
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
135 /* Returns true when LOOP is in REGION. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
136
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
137 static inline bool
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
138 loop_in_sese_p (struct loop *loop, sese region)
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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 return (bb_in_sese_p (loop->header, region)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
141 && bb_in_sese_p (loop->latch, region));
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
142 }
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
143
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
144 /* 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
145 is the same as the normal loop depth, but limited by a region.
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
146
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
147 Example:
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
148
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
149 loop_0
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
150 loop_1
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
151 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
152 S0
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
153 <- region start
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
154 S1
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
155
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
156 loop_2
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
157 S2
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
158
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
159 S3
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
160 <- region end
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
161 }
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
162
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
163 loop_0 does not exist in the region -> invalid
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
164 loop_1 exists, but is not completely contained in the region -> depth 0
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
165 loop_2 is completely contained -> depth 1 */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
166
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
167 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
168 sese_loop_depth (sese region, loop_p loop)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
169 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
170 unsigned int depth = 0;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
171
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
172 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
173 && (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
174 || 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
175 || 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
176
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
177 while (loop_in_sese_p (loop, region))
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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 depth++;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
180 loop = loop_outer (loop);
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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
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
183 return depth;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
184 }
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
185
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
186 /* Splits BB to make a single entry single exit region. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
187
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
188 static inline sese
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
189 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
190 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
191 edge entry, exit;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
192
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
193 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
194 entry = single_pred_edge (bb);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
195 else
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
196 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
197 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
198 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
199 }
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 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
202 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
203 else
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 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
206 gsi_prev (&gsi);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
207 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
208 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
209
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
210 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
211 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
212
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
213 /* Returns the block preceding the entry of a SESE. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
214
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
215 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
216 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
217 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
218 return SESE_ENTRY (sese)->src;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
219 }
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
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
222
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
223 /* A single entry single exit specialized for conditions. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
224
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
225 typedef struct ifsese_s {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
226 sese region;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
227 sese true_region;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
228 sese false_region;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
229 } *ifsese;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
230
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
231 extern void if_region_set_false_region (ifsese, sese);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
232 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
233 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
234 extern edge get_false_edge_from_guard_bb (basic_block);
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 extern void set_ifsese_condition (ifsese, tree);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
236
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
237 static inline edge
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
238 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
239 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
240 return SESE_ENTRY (if_region->region);
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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
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
243 static inline edge
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
244 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
245 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
246 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
247 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
248
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
249 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
250 if_region_get_condition_block (ifsese if_region)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
251 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
252 return if_region_entry (if_region)->dest;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
253 }
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
254
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
255 /* 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
256 names used after block copy in the new loop context. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
257 typedef struct rename_map_elt_s
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
258 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
259 tree old_name, expr;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
260 } *rename_map_elt;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
261
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
262 DEF_VEC_P(rename_map_elt);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
263 DEF_VEC_ALLOC_P (rename_map_elt, heap);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
264
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
265 extern void debug_rename_map (htab_t);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
266 extern hashval_t rename_map_elt_info (const void *);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
267 extern int eq_rename_map_elts (const void *, const void *);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
268
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
269 /* 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
270
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
271 static inline rename_map_elt
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
272 new_rename_map_elt (tree old_name, tree expr)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
273 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
274 rename_map_elt res;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
275
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
276 res = XNEW (struct rename_map_elt_s);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
277 res->old_name = old_name;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
278 res->expr = expr;
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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 return res;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
281 }
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
282
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
283 /* Structure containing the mapping between the CLooG's induction
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
284 variable and the type of the old induction variable. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
285 typedef struct ivtype_map_elt_s
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
286 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
287 tree type;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
288 const char *cloog_iv;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
289 } *ivtype_map_elt;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
290
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
291 extern void debug_ivtype_map (htab_t);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
292 extern hashval_t ivtype_map_elt_info (const void *);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
293 extern int eq_ivtype_map_elts (const void *, const void *);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
294
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
295 /* 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
296
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
297 static inline ivtype_map_elt
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
298 new_ivtype_map_elt (const char *cloog_iv, tree type)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
299 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
300 ivtype_map_elt res;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
301
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
302 res = XNEW (struct ivtype_map_elt_s);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
303 res->cloog_iv = cloog_iv;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
304 res->type = type;
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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 return res;
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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
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
309 /* Free and compute again all the dominators information. */
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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 static inline void
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
312 recompute_all_dominators (void)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
313 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
314 mark_irreducible_loops ();
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
315 free_dominance_info (CDI_DOMINATORS);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
316 calculate_dominance_info (CDI_DOMINATORS);
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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
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
319 typedef struct gimple_bb
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
320 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
321 basic_block bb;
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
322 struct poly_bb *pbb;
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
323
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
324 /* Lists containing the restrictions of the conditional statements
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
325 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
326 are true.
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
327
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
328 Example:
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
329
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
330 for (i = 0; i <= 20; i++)
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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 A
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
333
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
334 if (2i <= 8)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
335 B
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
336 }
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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 So for B there is an additional condition (2i <= 8).
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
339
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
340 List of COND_EXPR and SWITCH_EXPR. A COND_EXPR is true only if the
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
341 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
342 SWITCH_EXPR the corresponding element in CONDITION_CASES is a
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
343 CASE_LABEL_EXPR. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
344 VEC (gimple, heap) *conditions;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
345 VEC (gimple, heap) *condition_cases;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
346 VEC (data_reference_p, heap) *data_refs;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
347 } *gimple_bb_p;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
348
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
349 #define GBB_BB(GBB) (GBB)->bb
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
350 #define GBB_PBB(GBB) (GBB)->pbb
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
351 #define GBB_DATA_REFS(GBB) (GBB)->data_refs
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
352 #define GBB_CONDITIONS(GBB) (GBB)->conditions
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
353 #define GBB_CONDITION_CASES(GBB) (GBB)->condition_cases
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
354
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
355 /* Return the innermost loop that contains the basic block GBB. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
356
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
357 static inline struct loop *
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
358 gbb_loop (struct gimple_bb *gbb)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
359 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
360 return GBB_BB (gbb)->loop_father;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
361 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
362
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
363 /* Returns the gimple loop, that corresponds to the loop_iterator_INDEX.
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
364 If there is no corresponding gimple loop, we return NULL. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
365
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
366 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
367 gbb_loop_at_index (gimple_bb_p gbb, sese region, int index)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
368 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
369 loop_p loop = gbb_loop (gbb);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
370 int depth = sese_loop_depth (region, loop);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
371
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
372 while (--depth > index)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
373 loop = loop_outer (loop);
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374
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375 gcc_assert (sese_contains_loop (region, loop));
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376
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377 return loop;
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378 }
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379
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380 /* The number of common loops in REGION for GBB1 and GBB2. */
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381
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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382 static inline int
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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383 nb_common_loops (sese region, gimple_bb_p gbb1, gimple_bb_p gbb2)
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384 {
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385 loop_p l1 = gbb_loop (gbb1);
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386 loop_p l2 = gbb_loop (gbb2);
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387 loop_p common = find_common_loop (l1, l2);
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388
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389 return sese_loop_depth (region, common);
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390 }
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391
67
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392 /* Return true when DEF can be analyzed in REGION by the scalar
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393 evolution analyzer. */
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394
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395 static inline bool
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396 scev_analyzable_p (tree def, sese region)
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397 {
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398 loop_p loop;
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diff changeset
399 tree scev;
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400 tree type = TREE_TYPE (def);
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
401
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parents: 63
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402 /* When Graphite generates code for a scev, the code generator
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
403 expresses the scev in function of a single induction variable.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
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404 This is unsafe for floating point computations, as it may replace
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
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405 a floating point sum reduction with a multiplication. The
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
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406 following test returns false for non integer types to avoid such
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
407 problems. */
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
408 if (!INTEGRAL_TYPE_P (type)
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
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409 && !POINTER_TYPE_P (type))
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
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410 return false;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
411
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412 loop = loop_containing_stmt (SSA_NAME_DEF_STMT (def));
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
413 scev = scalar_evolution_in_region (region, loop, def);
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
414
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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415 return !chrec_contains_undetermined (scev)
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
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416 && (TREE_CODE (scev) != SSA_NAME
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
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417 || !defined_in_sese_p (scev, region))
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
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418 && (tree_does_not_contain_chrecs (scev)
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
419 || evolution_function_is_affine_p (scev));
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
420 }
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
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421
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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422 #endif