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* charset.c (load_charset_map): <, not <=, for optimization.

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This commit is contained in:
Paul Eggert 2011-04-09 13:46:34 -07:00
parent e301961642
commit 3befa58386
2 changed files with 10 additions and 7 deletions
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2
src/ChangeLog
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@ -1,5 +1,7 @@
2011-04-09 Paul Eggert <eggert@cs.ucla.edu>
* charset.c (load_charset_map): <, not <=, for optimization.
* xmenu.c (set_frame_menubar): Allocate smaller local vectors.
This also lets GCC 4.6.0 generate slightly better loop code.

15
src/charset.c
View File

@ -317,7 +317,7 @@ load_charset_map (struct charset *charset, struct charset_map_entries *entries,
for (i = 0; i < n_entries; i++)
{
unsigned from, to;
int from_index, to_index;
int from_index, to_index, lim_index;
int from_c, to_c;
int idx = i % 0x10000;
@ -339,6 +339,7 @@ load_charset_map (struct charset *charset, struct charset_map_entries *entries,
}
if (from_index < 0 || to_index < 0)
continue;
lim_index = to_index + 1;
if (to_c > max_char)
max_char = to_c;
@ -348,10 +349,10 @@ load_charset_map (struct charset *charset, struct charset_map_entries *entries,
if (control_flag == 1)
{
if (charset->method == CHARSET_METHOD_MAP)
for (; from_index <= to_index; from_index++, from_c++)
for (; from_index < lim_index; from_index++, from_c++)
ASET (vec, from_index, make_number (from_c));
else
for (; from_index <= to_index; from_index++, from_c++)
for (; from_index < lim_index; from_index++, from_c++)
CHAR_TABLE_SET (Vchar_unify_table,
CHARSET_CODE_OFFSET (charset) + from_index,
make_number (from_c));
@ -360,7 +361,7 @@ load_charset_map (struct charset *charset, struct charset_map_entries *entries,
{
if (charset->method == CHARSET_METHOD_MAP
&& CHARSET_COMPACT_CODES_P (charset))
for (; from_index <= to_index; from_index++, from_c++)
for (; from_index < lim_index; from_index++, from_c++)
{
unsigned code = INDEX_TO_CODE_POINT (charset, from_index);
@ -368,17 +369,17 @@ load_charset_map (struct charset *charset, struct charset_map_entries *entries,
CHAR_TABLE_SET (table, from_c, make_number (code));
}
else
for (; from_index <= to_index; from_index++, from_c++)
for (; from_index < lim_index; from_index++, from_c++)
{
if (NILP (CHAR_TABLE_REF (table, from_c)))
CHAR_TABLE_SET (table, from_c, make_number (from_index));
}
}
else if (control_flag == 3)
for (; from_index <= to_index; from_index++, from_c++)
for (; from_index < lim_index; from_index++, from_c++)
SET_TEMP_CHARSET_WORK_DECODER (from_c, from_index);
else if (control_flag == 4)
for (; from_index <= to_index; from_index++, from_c++)
for (; from_index < lim_index; from_index++, from_c++)
SET_TEMP_CHARSET_WORK_ENCODER (from_c, from_index);
else /* control_flag == 0 */
{