/* Routines for saving various data types to a file stream. This deals
with various data types like strings, integers, enums, etc.
- Copyright 2011 Free Software Foundation, Inc.
+ Copyright (C) 2011-2015 Free Software Foundation, Inc.
Contributed by Diego Novillo <dnovillo@google.com>
This file is part of GCC.
#include "config.h"
#include "system.h"
#include "coretypes.h"
+#include "alias.h"
+#include "symtab.h"
+#include "options.h"
+#include "tree.h"
+#include "fold-const.h"
+#include "predict.h"
+#include "tm.h"
+#include "hard-reg-set.h"
+#include "function.h"
+#include "basic-block.h"
+#include "tree-ssa-alias.h"
+#include "internal-fn.h"
+#include "gimple-expr.h"
+#include "gimple.h"
+#include "cgraph.h"
#include "data-streamer.h"
+
+/* Adds a new block to output stream OBS. */
+
+void
+lto_append_block (struct lto_output_stream *obs)
+{
+ struct lto_char_ptr_base *new_block;
+
+ gcc_assert (obs->left_in_block == 0);
+
+ if (obs->first_block == NULL)
+ {
+ /* This is the first time the stream has been written
+ into. */
+ obs->block_size = 1024;
+ new_block = (struct lto_char_ptr_base*) xmalloc (obs->block_size);
+ obs->first_block = new_block;
+ }
+ else
+ {
+ struct lto_char_ptr_base *tptr;
+ /* Get a new block that is twice as big as the last block
+ and link it into the list. */
+ obs->block_size *= 2;
+ new_block = (struct lto_char_ptr_base*) xmalloc (obs->block_size);
+ /* The first bytes of the block are reserved as a pointer to
+ the next block. Set the chain of the full block to the
+ pointer to the new block. */
+ tptr = obs->current_block;
+ tptr->ptr = (char *) new_block;
+ }
+
+ /* Set the place for the next char at the first position after the
+ chain to the next block. */
+ obs->current_pointer
+ = ((char *) new_block) + sizeof (struct lto_char_ptr_base);
+ obs->current_block = new_block;
+ /* Null out the newly allocated block's pointer to the next block. */
+ new_block->ptr = NULL;
+ obs->left_in_block = obs->block_size - sizeof (struct lto_char_ptr_base);
+}
+
+
/* 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
-lto_string_index (struct output_block *ob, const char *s, unsigned int len,
- bool persistent)
+static 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.len = len;
s_slot.slot_num = 0;
- slot = (struct string_slot **) htab_find_slot (ob->string_hash_table,
- &s_slot, INSERT);
+ slot = ob->string_hash_table->find_slot (&s_slot, INSERT);
if (*slot == NULL)
{
struct lto_output_stream *string_stream = ob->string_stream;
new_slot->len = len;
new_slot->slot_num = start;
*slot = new_slot;
- lto_output_uleb128_stream (string_stream, len);
- lto_output_data_stream (string_stream, string, len);
+ streamer_write_uhwi_stream (string_stream, len);
+ streamer_write_data_stream (string_stream, string, len);
return start + 1;
}
else
duration of the OB and thus OB can keep pointer into it. */
void
-lto_output_string_with_length (struct output_block *ob,
- struct lto_output_stream *index_stream,
- const char *s, unsigned int len, bool persistent)
+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)
- lto_output_uleb128_stream (index_stream,
- lto_string_index (ob, s, len, persistent));
+ streamer_write_uhwi_stream (index_stream,
+ streamer_string_index (ob, s, len, persistent));
else
- lto_output_1_stream (index_stream, 0);
+ streamer_write_char_stream (index_stream, 0);
}
duration of the OB and thus OB can keep pointer into it. */
void
-lto_output_string (struct output_block *ob,
- struct lto_output_stream *index_stream,
- const char *string, bool persistent)
+streamer_write_string (struct output_block *ob,
+ struct lto_output_stream *index_stream,
+ const char *string, bool persistent)
{
if (string)
- lto_output_string_with_length (ob, index_stream, string,
- strlen (string) + 1,
- persistent);
+ streamer_write_string_with_length (ob, index_stream, string,
+ strlen (string) + 1,
+ persistent);
else
- lto_output_1_stream (index_stream, 0);
+ 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
-output_zero (struct output_block *ob)
+streamer_write_zero (struct output_block *ob)
{
- lto_output_1_stream (ob->main_stream, 0);
+ streamer_write_char_stream (ob->main_stream, 0);
}
-/* Output an unsigned LEB128 quantity to OB->main_stream. */
+/* Write an unsigned HOST_WIDE_INT value WORK to OB->main_stream. */
void
-output_uleb128 (struct output_block *ob, unsigned HOST_WIDE_INT work)
+streamer_write_uhwi (struct output_block *ob, unsigned HOST_WIDE_INT work)
{
- lto_output_uleb128_stream (ob->main_stream, work);
+ streamer_write_uhwi_stream (ob->main_stream, work);
}
-/* Output a signed LEB128 quantity to OB->main_stream. */
+/* Write a HOST_WIDE_INT value WORK to OB->main_stream. */
void
-output_sleb128 (struct output_block *ob, HOST_WIDE_INT work)
+streamer_write_hwi (struct output_block *ob, HOST_WIDE_INT work)
{
- lto_output_sleb128_stream (ob->main_stream, 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);
+}
-/* Output an unsigned LEB128 quantity to OBS. */
+/* Write an unsigned HOST_WIDE_INT value WORK to OBS. */
void
-lto_output_uleb128_stream (struct lto_output_stream *obs,
- unsigned HOST_WIDE_INT work)
+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);
/* More bytes to follow. */
byte |= 0x80;
- lto_output_1_stream (obs, byte);
+ *(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);
}
- while (work != 0);
+ obs->current_pointer = current_pointer;
+ obs->left_in_block = left_in_block;
+ obs->total_size += size;
}
-/* Identical to output_uleb128_stream above except using unsigned
- HOST_WIDEST_INT type. For efficiency on host where unsigned HOST_WIDEST_INT
- is not native, we only use this if we know that HOST_WIDE_INT is not wide
- enough. */
+/* Write a HOST_WIDE_INT value WORK to OBS. */
void
-lto_output_widest_uint_uleb128_stream (struct lto_output_stream *obs,
- unsigned HOST_WIDEST_INT work)
+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);
- work >>= 7;
- if (work != 0)
- /* More bytes to follow. */
- byte |= 0x80;
-
- lto_output_1_stream (obs, byte);
+ /* 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);
}
- while (work != 0);
+ obs->current_pointer = current_pointer;
+ obs->left_in_block = left_in_block;
+ obs->total_size += size;
}
-
-/* Output a signed LEB128 quantity. */
+/* Write a GCOV counter value WORK to OBS. */
void
-lto_output_sleb128_stream (struct lto_output_stream *obs, HOST_WIDE_INT work)
+streamer_write_gcov_count_stream (struct lto_output_stream *obs, gcov_type work)
{
- int more, byte;
+ gcc_assert (work >= 0);
+ gcc_assert ((HOST_WIDE_INT) work == work);
+ streamer_write_hwi_stream (obs, work);
+}
- do
+/* Write raw DATA of length LEN to the output block OB. */
+
+void
+streamer_write_data_stream (struct lto_output_stream *obs, const void *data,
+ size_t len)
+{
+ while (len)
{
- byte = (work & 0x7f);
- /* arithmetic shift */
- work >>= 7;
- more = !((work == 0 && (byte & 0x40) == 0)
- || (work == -1 && (byte & 0x40) != 0));
- if (more)
- byte |= 0x80;
+ size_t copy;
+
+ /* No space left. */
+ if (obs->left_in_block == 0)
+ lto_append_block (obs);
- lto_output_1_stream (obs, byte);
+ /* Determine how many bytes to copy in this loop. */
+ if (len <= obs->left_in_block)
+ copy = len;
+ else
+ copy = obs->left_in_block;
+
+ /* Copy the data and do bookkeeping. */
+ memcpy (obs->current_pointer, data, copy);
+ obs->current_pointer += copy;
+ obs->total_size += copy;
+ obs->left_in_block -= copy;
+ data = (const char *) data + copy;
+ len -= copy;
}
- while (more);
}
+
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