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author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/data-streamer-out.c | |
parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/data-streamer-out.c')
-rw-r--r-- | gcc-4.9/gcc/data-streamer-out.c | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/data-streamer-out.c b/gcc-4.9/gcc/data-streamer-out.c new file mode 100644 index 000000000..3fe9d457a --- /dev/null +++ b/gcc-4.9/gcc/data-streamer-out.c @@ -0,0 +1,306 @@ +/* Routines for saving various data types to a file stream. This deals + with various data types like strings, integers, enums, etc. + + Copyright (C) 2011-2014 Free Software Foundation, Inc. + Contributed by Diego Novillo <dnovillo@google.com> + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING3. If not see +<http://www.gnu.org/licenses/>. */ + +#include "config.h" +#include "system.h" +#include "coretypes.h" +#include "tree.h" +#include "basic-block.h" +#include "tree-ssa-alias.h" +#include "internal-fn.h" +#include "gimple-expr.h" +#include "is-a.h" +#include "gimple.h" +#include "data-streamer.h" + +/* Return index used to reference STRING of LEN characters in the string table + in OB. The string might or might not include a trailing '\0'. + Then put the index onto the INDEX_STREAM. + When PERSISTENT is set, the string S is supposed to not change during + duration of the OB and thus OB can keep pointer into it. */ + +unsigned +streamer_string_index (struct output_block *ob, const char *s, unsigned int len, + bool persistent) +{ + struct string_slot **slot; + struct string_slot s_slot; + + s_slot.s = s; + s_slot.len = len; + s_slot.slot_num = 0; + + slot = ob->string_hash_table.find_slot (&s_slot, INSERT); + if (*slot == NULL) + { + struct lto_output_stream *string_stream = ob->string_stream; + unsigned int start = string_stream->total_size; + struct string_slot *new_slot = XOBNEW (&ob->obstack, struct string_slot); + const char *string; + + if (!persistent) + { + char *tmp; + string = tmp = XOBNEWVEC (&ob->obstack, char, len); + memcpy (tmp, s, len); + } + else + string = s; + + new_slot->s = string; + new_slot->len = len; + new_slot->slot_num = start; + *slot = new_slot; + streamer_write_uhwi_stream (string_stream, len); + lto_output_data_stream (string_stream, string, len); + return start + 1; + } + else + { + struct string_slot *old_slot = *slot; + return old_slot->slot_num + 1; + } +} + + +/* Output STRING of LEN characters to the string table in OB. The + string might or might not include a trailing '\0'. Then put the + index onto the INDEX_STREAM. + When PERSISTENT is set, the string S is supposed to not change during + duration of the OB and thus OB can keep pointer into it. */ + +void +streamer_write_string_with_length (struct output_block *ob, + struct lto_output_stream *index_stream, + const char *s, unsigned int len, + bool persistent) +{ + if (s) + streamer_write_uhwi_stream (index_stream, + streamer_string_index (ob, s, len, persistent)); + else + streamer_write_char_stream (index_stream, 0); +} + + +/* Output the '\0' terminated STRING to the string + table in OB. Then put the index onto the INDEX_STREAM. + When PERSISTENT is set, the string S is supposed to not change during + duration of the OB and thus OB can keep pointer into it. */ + +void +streamer_write_string (struct output_block *ob, + struct lto_output_stream *index_stream, + const char *string, bool persistent) +{ + if (string) + streamer_write_string_with_length (ob, index_stream, string, + strlen (string) + 1, + persistent); + else + streamer_write_char_stream (index_stream, 0); +} + + +/* Output STRING of LEN characters to the string table in OB. Then + put the index into BP. + When PERSISTENT is set, the string S is supposed to not change during + duration of the OB and thus OB can keep pointer into it. */ + +void +bp_pack_string_with_length (struct output_block *ob, struct bitpack_d *bp, + const char *s, unsigned int len, bool persistent) +{ + unsigned index = 0; + if (s) + index = streamer_string_index (ob, s, len, persistent); + bp_pack_var_len_unsigned (bp, index); +} + + +/* Output the '\0' terminated STRING to the string + table in OB. Then put the index onto the bitpack BP. + When PERSISTENT is set, the string S is supposed to not change during + duration of the OB and thus OB can keep pointer into it. */ + +void +bp_pack_string (struct output_block *ob, struct bitpack_d *bp, + const char *s, bool persistent) +{ + unsigned index = 0; + if (s) + index = streamer_string_index (ob, s, strlen (s) + 1, persistent); + bp_pack_var_len_unsigned (bp, index); +} + + + +/* Write a zero to the output stream. */ + +void +streamer_write_zero (struct output_block *ob) +{ + streamer_write_char_stream (ob->main_stream, 0); +} + + +/* Write an unsigned HOST_WIDE_INT value WORK to OB->main_stream. */ + +void +streamer_write_uhwi (struct output_block *ob, unsigned HOST_WIDE_INT work) +{ + streamer_write_uhwi_stream (ob->main_stream, work); +} + + +/* Write a HOST_WIDE_INT value WORK to OB->main_stream. */ + +void +streamer_write_hwi (struct output_block *ob, HOST_WIDE_INT work) +{ + streamer_write_hwi_stream (ob->main_stream, work); +} + +/* Write a gcov counter value WORK to OB->main_stream. */ + +void +streamer_write_gcov_count (struct output_block *ob, gcov_type work) +{ + streamer_write_gcov_count_stream (ob->main_stream, work); +} + +/* Write an unsigned HOST_WIDE_INT value WORK to OBS. */ + +void +streamer_write_uhwi_stream (struct lto_output_stream *obs, + unsigned HOST_WIDE_INT work) +{ + if (obs->left_in_block == 0) + lto_append_block (obs); + char *current_pointer = obs->current_pointer; + unsigned int left_in_block = obs->left_in_block; + unsigned int size = 0; + do + { + unsigned int byte = (work & 0x7f); + work >>= 7; + if (work != 0) + /* More bytes to follow. */ + byte |= 0x80; + + *(current_pointer++) = byte; + left_in_block--; + size++; + } + while (work != 0 && left_in_block > 0); + if (work != 0) + { + obs->left_in_block = 0; + lto_append_block (obs); + current_pointer = obs->current_pointer; + left_in_block = obs->left_in_block; + do + { + unsigned int byte = (work & 0x7f); + work >>= 7; + if (work != 0) + /* More bytes to follow. */ + byte |= 0x80; + + *(current_pointer++) = byte; + left_in_block--; + size++; + } + while (work != 0); + } + obs->current_pointer = current_pointer; + obs->left_in_block = left_in_block; + obs->total_size += size; +} + + +/* Write a HOST_WIDE_INT value WORK to OBS. */ + +void +streamer_write_hwi_stream (struct lto_output_stream *obs, HOST_WIDE_INT work) +{ + if (obs->left_in_block == 0) + lto_append_block (obs); + char *current_pointer = obs->current_pointer; + unsigned int left_in_block = obs->left_in_block; + unsigned int size = 0; + bool more; + do + { + unsigned int byte = (work & 0x7f); + /* If the lower 7-bits are sign-extended 0 or -1 we are finished. */ + work >>= 6; + more = !(work == 0 || work == -1); + if (more) + { + /* More bits to follow. */ + work >>= 1; + byte |= 0x80; + } + + *(current_pointer++) = byte; + left_in_block--; + size++; + } + while (more && left_in_block > 0); + if (more) + { + obs->left_in_block = 0; + lto_append_block (obs); + current_pointer = obs->current_pointer; + left_in_block = obs->left_in_block; + do + { + unsigned int byte = (work & 0x7f); + work >>= 6; + more = !(work == 0 || work == -1); + if (more) + { + work >>= 1; + byte |= 0x80; + } + + *(current_pointer++) = byte; + left_in_block--; + size++; + } + while (more); + } + obs->current_pointer = current_pointer; + obs->left_in_block = left_in_block; + obs->total_size += size; +} + +/* Write a GCOV counter value WORK to OBS. */ + +void +streamer_write_gcov_count_stream (struct lto_output_stream *obs, gcov_type work) +{ + gcc_assert (work >= 0); + gcc_assert ((HOST_WIDE_INT) work == work); + streamer_write_hwi_stream (obs, work); +} |