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| author | Uros Bizjak <ubizjak@gmail.com> | 2010-06-22 16:44:24 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2010-06-22 14:44:24 +0000 |
| commit | 07309d58d08122d67d722bc297eb371d9788488c (patch) | |
| tree | fa1b45a3f86cadecee7fb6f62ac6656a09e25cb7 /gcc | |
| parent | b0256cb6d28d3121f4bcba03da55979a4a467bd7 (diff) | |
| download | gcc-07309d58d08122d67d722bc297eb371d9788488c.zip gcc-07309d58d08122d67d722bc297eb371d9788488c.tar.gz gcc-07309d58d08122d67d722bc297eb371d9788488c.tar.bz2 | |
* bitmap.c (bitmap_clear_bit): Micro optimize.
From-SVN: r161189
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/bitmap.c | 12 |
2 files changed, 11 insertions, 5 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ca0ebf5..b3aae11 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,9 @@ 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. (SWI48x): Ditto. (SWI12): Ditto. diff --git a/gcc/bitmap.c b/gcc/bitmap.c index aeaf2ea..f2fd2bd 100644 --- a/gcc/bitmap.c +++ b/gcc/bitmap.c @@ -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; } |