lkml.org 
[lkml]   [2009]   [Nov]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v5 05/12] vsprintf: reduce code size by avoiding extra check
Date
No functional change, just refactor the code so that it avoid checking
"if (hi)" two times in a sequence, taking advantage of previous check made.

It also reduces code size:
text data bss dec hex filename
15726 0 8 15734 3d76 vsprintf.o (ex lib/lib.a-BEFORE)
15710 0 8 15718 3d66 vsprintf.o (ex lib/lib.a-AFTER)

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
---
lib/vsprintf.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index d107583..3c83f7b 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -745,8 +745,9 @@ static char *ip6_compressed_string(char *p, const char *addr)
p = pack_hex_byte(p, hi);
else
*p++ = hex_asc_lo(hi);
+ p = pack_hex_byte(p, lo);
}
- if (hi || lo > 0x0f)
+ else if (lo > 0x0f)
p = pack_hex_byte(p, lo);
else
*p++ = hex_asc_lo(lo);
--
1.6.5.2.180.gc5b3e.dirty
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2009-11-15 08:19    [W:0.082 / U:0.584 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site