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author | Rasmus Villemoes <linux@rasmusvillemoes.dk> | 2015-04-16 12:43:42 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-17 09:03:55 -0400 |
commit | 675cf53c1deaffadc7b6a0b4afe6cdafec86bedb (patch) | |
tree | ecf7d3a546cdc560b5946b73b6163a5a20b500fc /Documentation/basic_profiling.txt | |
parent | cdb1dc3f1ca5c5899e5fa186afe20390bd8c00dc (diff) |
lib/vsprintf.c: improve put_dec_trunc8 slightly
I hadn't had enough coffee when I wrote this. Currently, the final
increment of buf depends on the value loaded from the table, and
causes gcc to emit a cmov immediately before the return. It is smarter
to let it depend on r, since the increment can then be computed in
parallel with the final load/store pair. It also shaves 16 bytes of
.text.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Tejun Heo <tj@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/basic_profiling.txt')
0 files changed, 0 insertions, 0 deletions