Mercurial > hg > CbC > CbC_gcc

annotate gcc/graphite-blocking.c @ 63:b7f97abdc517 gcc-4.6-20100522

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update gcc from gcc-4.5.0 to gcc-4.6
author ryoma <e075725@ie.u-ryukyu.ac.jp>
date Mon, 24 May 2010 12:47:05 +0900
parents 77e2b8dfacca
children f6334be47118
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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55
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1 /* Heuristics and transform for loop blocking and strip mining on
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2 polyhedral representation.
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3
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4 Copyright (C) 2009 Free Software Foundation, Inc.
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5 Contributed by Sebastian Pop <sebastian.pop@amd.com> and
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6 Pranav Garg <pranav.garg2107@gmail.com>.
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7
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8 This file is part of GCC.
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9
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10 GCC is free software; you can redistribute it and/or modify
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11 it under the terms of the GNU General Public License as published by
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12 the Free Software Foundation; either version 3, or (at your option)
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13 any later version.
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14
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15 GCC is distributed in the hope that it will be useful,
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16 but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 GNU General Public License for more details.
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19
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20 You should have received a copy of the GNU General Public License
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21 along with GCC; see the file COPYING3. If not see
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22 <http://www.gnu.org/licenses/>. */
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23 #include "config.h"
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24 #include "system.h"
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25 #include "coretypes.h"
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26 #include "tm.h"
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27 #include "ggc.h"
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28 #include "tree.h"
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29 #include "rtl.h"
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30 #include "output.h"
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31 #include "basic-block.h"
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32 #include "diagnostic.h"
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33 #include "tree-flow.h"
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34 #include "toplev.h"
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35 #include "tree-dump.h"
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36 #include "timevar.h"
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37 #include "cfgloop.h"
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38 #include "tree-chrec.h"
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39 #include "tree-data-ref.h"
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40 #include "tree-scalar-evolution.h"
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41 #include "tree-pass.h"
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42 #include "domwalk.h"
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43 #include "value-prof.h"
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44 #include "pointer-set.h"
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45 #include "gimple.h"
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46 #include "params.h"
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47
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48 #ifdef HAVE_cloog
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49 #include "cloog/cloog.h"
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50 #include "ppl_c.h"
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51 #include "sese.h"
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52 #include "graphite-ppl.h"
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53 #include "graphite.h"
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54 #include "graphite-poly.h"
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55
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56
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57 /* Strip mines with a factor STRIDE the scattering (time) dimension
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58 around PBB at depth TIME_DEPTH.
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59
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60 The following example comes from the wiki page:
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61 http://gcc.gnu.org/wiki/Graphite/Strip_mine
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62
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63 The strip mine of a loop with a tile of 64 can be obtained with a
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64 scattering function as follows:
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65
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66 $ cat ./albert_strip_mine.cloog
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67 # language: C
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68 c
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69
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70 # parameter {n | n >= 0}
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71 1 3
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72 # n 1
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73 1 1 0
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74 1
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75 n
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76
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77 1 # Number of statements:
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78
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79 1
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80 # {i | 0 <= i <= n}
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81 2 4
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82 # i n 1
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83 1 1 0 0
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84 1 -1 1 0
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85
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86 0 0 0
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87 1
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88 i
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89
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90 1 # Scattering functions
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91
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92 3 6
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93 # NEW OLD i n 1
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94 1 -64 0 1 0 0
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95 1 64 0 -1 0 63
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96 0 0 1 -1 0 0
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97
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98 1
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99 NEW OLD
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100
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101 #the output of CLooG is like this:
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102 #$ cloog ./albert_strip_mine.cloog
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103 # for (NEW=0;NEW<=floord(n,64);NEW++) {
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104 # for (OLD=max(64*NEW,0);OLD<=min(64*NEW+63,n);OLD++) {
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105 # S1(i = OLD) ;
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106 # }
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107 # }
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108 */
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109
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110 static bool
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111 pbb_strip_mine_time_depth (poly_bb_p pbb, int time_depth, int stride)
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112 {
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113 ppl_dimension_type iter, dim, strip;
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114 ppl_Polyhedron_t res = PBB_TRANSFORMED_SCATTERING (pbb);
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115 /* STRIP is the dimension that iterates with stride STRIDE. */
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116 /* ITER is the dimension that enumerates single iterations inside
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117 one strip that has at most STRIDE iterations. */
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118 strip = time_depth;
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119 iter = strip + 2;
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120
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121 psct_add_scattering_dimension (pbb, strip);
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122 psct_add_scattering_dimension (pbb, strip + 1);
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123
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124 ppl_Polyhedron_space_dimension (res, &dim);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
125
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
126 /* Lower bound of the striped loop. */
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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 ppl_Constraint_t new_cstr;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
129 ppl_Linear_Expression_t expr;
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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 ppl_new_Linear_Expression_with_dimension (&expr, dim);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
132 ppl_set_coef (expr, strip, -1 * stride);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
133 ppl_set_coef (expr, iter, 1);
77e2b8dfacca update it from 4.4.3 to 4.5.0
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 ppl_new_Constraint (&new_cstr, expr, PPL_CONSTRAINT_TYPE_GREATER_OR_EQUAL);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
136 ppl_delete_Linear_Expression (expr);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
137 ppl_Polyhedron_add_constraint (res, new_cstr);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
138 ppl_delete_Constraint (new_cstr);
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
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
141 /* Upper bound of the striped loop. */
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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 ppl_Constraint_t new_cstr;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
144 ppl_Linear_Expression_t expr;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
145
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
146 ppl_new_Linear_Expression_with_dimension (&expr, dim);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
147 ppl_set_coef (expr, strip, stride);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
148 ppl_set_coef (expr, iter, -1);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
149 ppl_set_inhomogeneous (expr, stride - 1);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
150
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
151 ppl_new_Constraint (&new_cstr, expr, PPL_CONSTRAINT_TYPE_GREATER_OR_EQUAL);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
152 ppl_delete_Linear_Expression (expr);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
153 ppl_Polyhedron_add_constraint (res, new_cstr);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
154 ppl_delete_Constraint (new_cstr);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
155 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
156
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
157 /* Static scheduling for ITER level.
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
158 This is mandatory to keep the 2d + 1 canonical scheduling format. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
159 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
160 ppl_Constraint_t new_cstr;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
161 ppl_Linear_Expression_t expr;
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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 ppl_new_Linear_Expression_with_dimension (&expr, dim);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
164 ppl_set_coef (expr, strip + 1, 1);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
165 ppl_set_inhomogeneous (expr, 0);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
166
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
167 ppl_new_Constraint (&new_cstr, expr, PPL_CONSTRAINT_TYPE_EQUAL);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
168 ppl_delete_Linear_Expression (expr);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
169 ppl_Polyhedron_add_constraint (res, new_cstr);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
170 ppl_delete_Constraint (new_cstr);
77e2b8dfacca update it from 4.4.3 to 4.5.0
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
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
173 return true;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
174 }
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
175
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
176 /* Returns true when strip mining with STRIDE of the loop around PBB
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
177 at DEPTH is profitable. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
178
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
179 static bool
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
180 pbb_strip_mine_profitable_p (poly_bb_p pbb,
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
181 graphite_dim_t depth,
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
182 int stride)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
183 {
63
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
184 mpz_t niter, strip_stride;
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
185 bool res;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
186
63
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
187 mpz_init (strip_stride);
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
188 mpz_init (niter);
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
189 mpz_set_si (strip_stride, stride);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
190 pbb_number_of_iterations_at_time (pbb, psct_dynamic_dim (pbb, depth), niter);
63
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
191 res = (mpz_cmp (niter, strip_stride) > 0);
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
192 mpz_clear (strip_stride);
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
193 mpz_clear (niter);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
194
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
195 return res;
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
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
198 /* Strip-mines all the loops of LST that are considered profitable to
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
199 strip-mine. Return true if it did strip-mined some loops. */
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 static bool
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
202 lst_do_strip_mine_loop (lst_p lst, int depth)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
203 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
204 int i;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
205 lst_p l;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
206 int stride = PARAM_VALUE (PARAM_LOOP_BLOCK_TILE_SIZE);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
207 poly_bb_p pbb;
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 if (!lst)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
210 return false;
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 if (LST_LOOP_P (lst))
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 bool res = false;
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 for (i = 0; VEC_iterate (lst_p, LST_SEQ (lst), i, l); i++)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
217 res |= lst_do_strip_mine_loop (l, depth);
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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 return res;
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 pbb = LST_PBB (lst);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
223 return pbb_strip_mine_time_depth (pbb, psct_dynamic_dim (pbb, depth),
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
224 stride);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
225 }
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 /* Strip-mines all the loops of LST that are considered profitable to
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
228 strip-mine. Return true if it did strip-mined some loops. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
229
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
230 static bool
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
231 lst_do_strip_mine (lst_p lst)
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 int i;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
234 lst_p l;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
235 bool res = false;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
236 int stride = PARAM_VALUE (PARAM_LOOP_BLOCK_TILE_SIZE);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
237 int depth;
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 if (!lst
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
240 || !LST_LOOP_P (lst))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
241 return false;
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 for (i = 0; VEC_iterate (lst_p, LST_SEQ (lst), i, l); i++)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
244 res |= lst_do_strip_mine (l);
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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 depth = lst_depth (lst);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
247 if (depth >= 0
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
248 && pbb_strip_mine_profitable_p (LST_PBB (lst_find_first_pbb (lst)),
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
249 depth, stride))
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
250 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
251 res |= lst_do_strip_mine_loop (lst, lst_depth (lst));
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
252 lst_add_loop_under_loop (lst);
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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
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
255 return res;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
256 }
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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 /* Strip mines all the loops in SCOP. Nothing profitable in all this:
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
259 this is just a driver function. */
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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 bool
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
262 scop_do_strip_mine (scop_p scop)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
263 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
264 bool transform_done = false;
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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 store_scattering (scop);
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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 transform_done = lst_do_strip_mine (SCOP_TRANSFORMED_SCHEDULE (scop));
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
269
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
270 if (!transform_done)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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271 return false;
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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 if (!graphite_legal_transform (scop))
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
274 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
275 restore_scattering (scop);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
276 return false;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
277 }
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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 return transform_done;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
280 }
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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 /* Loop blocks all the loops in SCOP. Returns true when we manage to
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
283 block some loops. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
284
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
285 bool
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
286 scop_do_block (scop_p scop)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
287 {
63
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
288 bool strip_mined = false;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
289 bool interchanged = false;
55
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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 store_scattering (scop);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
292
63
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
293 strip_mined = lst_do_strip_mine (SCOP_TRANSFORMED_SCHEDULE (scop));
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
294 interchanged = scop_do_interchange (scop);
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
295
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
296 /* If we don't interchange loops, then the strip mine is not
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
297 profitable, and the transform is not a loop blocking. */
63
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
298 if (!interchanged
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
299 || !graphite_legal_transform (scop))
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
300 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
301 restore_scattering (scop);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
302 return false;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
303 }
63
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
304 else if (strip_mined && interchanged
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
305 && dump_file && (dump_flags & TDF_DETAILS))
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
306 fprintf (dump_file, "SCoP will be loop blocked.\n");
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
307
63
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
308 return strip_mined || interchanged;
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
309 }
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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 #endif