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annotate gcc/lto-compress.c @ 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 /* LTO IL compression streams.
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2
67
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3 Copyright 2009, 2010 Free Software Foundation, Inc.
55
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4 Contributed by Simon Baldwin <simonb@google.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 it
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9 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, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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16 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 #include "config.h"
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23 #include "system.h"
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24 /* zlib.h includes other system headers. Those headers may test feature
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25 test macros. config.h may define feature test macros. For this reason,
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26 zlib.h needs to be included after, rather than before, config.h and
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27 system.h. */
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28 #include <zlib.h>
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29 #include "coretypes.h"
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30 #include "tree.h"
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31 #include "diagnostic-core.h"
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32 #include "langhooks.h"
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33 #include "lto-streamer.h"
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34 #include "lto-compress.h"
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35
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36 /* Compression stream structure, holds the flush callback and opaque token,
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37 the buffered data, and a note of whether compressing or uncompressing. */
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38
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39 struct lto_compression_stream
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40 {
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41 void (*callback) (const char *, unsigned, void *);
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42 void *opaque;
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43 char *buffer;
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44 size_t bytes;
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45 size_t allocation;
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46 bool is_compression;
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47 };
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48
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49 /* Overall compression constants for zlib. */
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50
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51 static const size_t Z_BUFFER_LENGTH = 4096;
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52 static const size_t MIN_STREAM_ALLOCATION = 1024;
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53
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54 /* For zlib, allocate SIZE count of ITEMS and return the address, OPAQUE
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55 is unused. */
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56
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57 static void *
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58 lto_zalloc (void *opaque, unsigned items, unsigned size)
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59 {
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60 gcc_assert (opaque == Z_NULL);
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61 return xmalloc (items * size);
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62 }
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63
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64 /* For zlib, free memory at ADDRESS, OPAQUE is unused. */
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65
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66 static void
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67 lto_zfree (void *opaque, void *address)
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68 {
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69 gcc_assert (opaque == Z_NULL);
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70 free (address);
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71 }
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72
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73 /* Return a zlib compression level that zlib will not reject. Normalizes
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74 the compression level from the command line flag, clamping non-default
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75 values to the appropriate end of their valid range. */
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76
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77 static int
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78 lto_normalized_zlib_level (void)
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79 {
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80 int level = flag_lto_compression_level;
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81
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82 if (level != Z_DEFAULT_COMPRESSION)
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83 {
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84 if (level < Z_NO_COMPRESSION)
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85 level = Z_NO_COMPRESSION;
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86 else if (level > Z_BEST_COMPRESSION)
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87 level = Z_BEST_COMPRESSION;
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88 }
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89
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90 return level;
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91 }
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92
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93 /* Create a new compression stream, with CALLBACK flush function passed
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94 OPAQUE token, IS_COMPRESSION indicates if compressing or uncompressing. */
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95
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96 static struct lto_compression_stream *
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97 lto_new_compression_stream (void (*callback) (const char *, unsigned, void *),
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98 void *opaque, bool is_compression)
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99 {
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100 struct lto_compression_stream *stream
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101 = (struct lto_compression_stream *) xmalloc (sizeof (*stream));
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102
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103 memset (stream, 0, sizeof (*stream));
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104 stream->callback = callback;
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105 stream->opaque = opaque;
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106 stream->is_compression = is_compression;
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107
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108 return stream;
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109 }
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110
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111 /* Append NUM_CHARS from address BASE to STREAM. */
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112
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113 static void
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114 lto_append_to_compression_stream (struct lto_compression_stream *stream,
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115 const char *base, size_t num_chars)
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116 {
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117 size_t required = stream->bytes + num_chars;
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118
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119 if (stream->allocation < required)
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120 {
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121 if (stream->allocation == 0)
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122 stream->allocation = MIN_STREAM_ALLOCATION;
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123 while (stream->allocation < required)
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diff changeset
124 stream->allocation *= 2;
77e2b8dfacca update it from 4.4.3 to 4.5.0
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 stream->buffer = (char *) xrealloc (stream->buffer, stream->allocation);
77e2b8dfacca update it from 4.4.3 to 4.5.0
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
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
129 memcpy (stream->buffer + stream->bytes, base, num_chars);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
130 stream->bytes += num_chars;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
131 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
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 /* Free the buffer and memory associated with STREAM. */
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 static void
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
136 lto_destroy_compression_stream (struct lto_compression_stream *stream)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
137 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
138 free (stream->buffer);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
139 free (stream);
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
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
142 /* Return a new compression stream, with CALLBACK flush function passed
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
143 OPAQUE token. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
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 struct lto_compression_stream *
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
146 lto_start_compression (void (*callback) (const char *, unsigned, void *),
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
147 void *opaque)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
148 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
149 return lto_new_compression_stream (callback, opaque, true);
77e2b8dfacca update it from 4.4.3 to 4.5.0
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
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
152 /* Append NUM_CHARS from address BASE to STREAM. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
153
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
154 void
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
155 lto_compress_block (struct lto_compression_stream *stream,
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
156 const char *base, size_t num_chars)
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 gcc_assert (stream->is_compression);
77e2b8dfacca update it from 4.4.3 to 4.5.0
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 lto_append_to_compression_stream (stream, base, num_chars);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
161 lto_stats.num_output_il_bytes += num_chars;
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
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
164 /* Finalize STREAM compression, and free stream allocations. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
165
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
166 void
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
167 lto_end_compression (struct lto_compression_stream *stream)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
168 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
169 unsigned char *cursor = (unsigned char *) stream->buffer;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
170 size_t remaining = stream->bytes;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
171 const size_t outbuf_length = Z_BUFFER_LENGTH;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
172 unsigned char *outbuf = (unsigned char *) xmalloc (outbuf_length);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
173 z_stream out_stream;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
174 size_t compressed_bytes = 0;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
175 int status;
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 gcc_assert (stream->is_compression);
77e2b8dfacca update it from 4.4.3 to 4.5.0
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 out_stream.next_out = outbuf;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
180 out_stream.avail_out = outbuf_length;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
181 out_stream.next_in = cursor;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
182 out_stream.avail_in = remaining;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
183 out_stream.zalloc = lto_zalloc;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
184 out_stream.zfree = lto_zfree;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
185 out_stream.opaque = Z_NULL;
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 status = deflateInit (&out_stream, lto_normalized_zlib_level ());
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
188 if (status != Z_OK)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
189 internal_error ("compressed stream: %s", zError (status));
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
190
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
191 do
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 size_t in_bytes, out_bytes;
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 status = deflate (&out_stream, Z_FINISH);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
196 if (status != Z_OK && status != Z_STREAM_END)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
197 internal_error ("compressed stream: %s", zError (status));
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
198
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
199 in_bytes = remaining - out_stream.avail_in;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
200 out_bytes = outbuf_length - out_stream.avail_out;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
201
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
202 stream->callback ((const char *) outbuf, out_bytes, stream->opaque);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
203 lto_stats.num_compressed_il_bytes += out_bytes;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
204 compressed_bytes += out_bytes;
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 cursor += in_bytes;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
207 remaining -= in_bytes;
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 out_stream.next_out = outbuf;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
210 out_stream.avail_out = outbuf_length;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
211 out_stream.next_in = cursor;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
212 out_stream.avail_in = remaining;
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 while (status != Z_STREAM_END);
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 status = deflateEnd (&out_stream);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
217 if (status != Z_OK)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
218 internal_error ("compressed stream: %s", zError (status));
77e2b8dfacca update it from 4.4.3 to 4.5.0
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 lto_destroy_compression_stream (stream);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
221 free (outbuf);
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
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
224 /* Return a new uncompression stream, with CALLBACK flush function passed
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
225 OPAQUE token. */
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 struct lto_compression_stream *
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
228 lto_start_uncompression (void (*callback) (const char *, unsigned, void *),
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
229 void *opaque)
77e2b8dfacca update it from 4.4.3 to 4.5.0
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 return lto_new_compression_stream (callback, opaque, false);
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
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
234 /* Append NUM_CHARS from address BASE to STREAM. */
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 void
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
237 lto_uncompress_block (struct lto_compression_stream *stream,
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
238 const char *base, size_t num_chars)
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 gcc_assert (!stream->is_compression);
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 lto_append_to_compression_stream (stream, base, num_chars);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
243 lto_stats.num_input_il_bytes += num_chars;
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
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
246 /* Finalize STREAM uncompression, and free stream allocations.
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 Because of the way LTO IL streams are compressed, there may be several
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
249 concatenated compressed segments in the accumulated data, so for this
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
250 function we iterate decompressions until no data remains. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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251
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
252 void
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
253 lto_end_uncompression (struct lto_compression_stream *stream)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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diff changeset
254 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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255 unsigned char *cursor = (unsigned char *) stream->buffer;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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diff changeset
256 size_t remaining = stream->bytes;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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diff changeset
257 const size_t outbuf_length = Z_BUFFER_LENGTH;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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diff changeset
258 unsigned char *outbuf = (unsigned char *) xmalloc (outbuf_length);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
259 size_t uncompressed_bytes = 0;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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260
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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diff changeset
261 gcc_assert (!stream->is_compression);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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262
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
263 while (remaining > 0)
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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>
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diff changeset
265 z_stream in_stream;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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diff changeset
266 size_t out_bytes;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
267 int status;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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268
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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diff changeset
269 in_stream.next_out = outbuf;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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diff changeset
270 in_stream.avail_out = outbuf_length;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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diff changeset
271 in_stream.next_in = cursor;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
272 in_stream.avail_in = remaining;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
273 in_stream.zalloc = lto_zalloc;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
274 in_stream.zfree = lto_zfree;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
275 in_stream.opaque = Z_NULL;
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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:
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277 status = inflateInit (&in_stream);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
278 if (status != Z_OK)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
279 internal_error ("compressed stream: %s", zError (status));
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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 do
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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 size_t in_bytes;
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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 status = inflate (&in_stream, Z_SYNC_FLUSH);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
286 if (status != Z_OK && status != Z_STREAM_END)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
287 internal_error ("compressed stream: %s", zError (status));
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
288
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
289 in_bytes = remaining - in_stream.avail_in;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
290 out_bytes = outbuf_length - in_stream.avail_out;
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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 stream->callback ((const char *) outbuf, out_bytes, stream->opaque);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
293 lto_stats.num_uncompressed_il_bytes += out_bytes;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
294 uncompressed_bytes += out_bytes;
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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 cursor += in_bytes;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
297 remaining -= in_bytes;
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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 in_stream.next_out = outbuf;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
300 in_stream.avail_out = outbuf_length;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
301 in_stream.next_in = cursor;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
302 in_stream.avail_in = remaining;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
303 }
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
304 while (!(status == Z_STREAM_END && out_bytes == 0));
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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 status = inflateEnd (&in_stream);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
307 if (status != Z_OK)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
308 internal_error ("compressed stream: %s", zError (status));
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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 lto_destroy_compression_stream (stream);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
312 free (outbuf);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
313 }