diff options
| author | ak <ak@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-10-29 01:02:35 +0000 |
|---|---|---|
| committer | ak <ak@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-10-29 01:02:35 +0000 |
| commit | 25a28b4458b79989e2661d885d066a272ca7655b (patch) | |
| tree | 8f9e002586202119430d4bd8c63fee062dce5c6a /gcc/ChangeLog | |
| parent | 4a2f812eeb7192c01faef17a3e0fa324f5faff33 (diff) | |
| download | gcc-25a28b4458b79989e2661d885d066a272ca7655b.tar.gz | |
Use more efficient alignment in ggc
Jakub had some concerns about the performance of page alignments in
ggc-page, which use a hardware division instructions currently.
This patch changes them all to use a new PAGE_ALIGN macro, which
exploits that pages are a power of two.
gcc/:
2011-10-21 Andi Kleen <ak@linux.intel.com>
* ggc-page (PAGE_ALIGN): Add.
(alloc_page, ggc_pch_total_size, ggc_pch_this_base, ggc_pch_read):
Replace ROUND_UP with PAGE_ALIGN.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@180650 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/ChangeLog')
| -rw-r--r-- | gcc/ChangeLog | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 0c442cd206b..364abf0e199 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2011-10-21 Andi Kleen <ak@linux.intel.com> + + * ggc-page (PAGE_ALIGN): Add. + (alloc_page, ggc_pch_total_size, ggc_pch_this_base, ggc_pch_read): + Replace ROUND_UP with PAGE_ALIGN. + 2011-10-20 Andi Kleen <ak@linux.intel.com> * ggc-page (alloc_anon): Add check argument. |