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* bitmap.c (bitmap_clear_bit): Micro optimize. 

From-SVN: r161189
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Uros Bizjak 2010-06-22 16:44:24 +02:00 committed by Jan Hubicka
parent b0256cb6d2
commit 07309d58d0
2 changed files with 11 additions and 5 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2010-06-22 Uros Bizjak <ubizjak@gmail.com>
* bitmap.c (bitmap_clear_bit): Micro optimize.
2010-06-22 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.md (SWI1248x): New mode iterator.

12
gcc/bitmap.c
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@ -624,11 +624,13 @@ bitmap_clear_bit (bitmap head, int bit)
BITMAP_WORD bit_val = ((BITMAP_WORD) 1) << bit_num;
bool res = (ptr->bits[word_num] & bit_val) != 0;
if (res)
ptr->bits[word_num] &= ~bit_val;
/* If we cleared the entire word, free up the element. */
if (bitmap_element_zerop (ptr))
bitmap_element_free (head, ptr);
{
ptr->bits[word_num] &= ~bit_val;
/* If we cleared the entire word, free up the element. */
if (!ptr->bits[word_num]
&& bitmap_element_zerop (ptr))
bitmap_element_free (head, ptr);
}
return res;
}