提交 cc75fb71 编写于 作者: J Jesper Juhl 提交者: Linus Torvalds

[PATCH] lib/string.c cleanup: remove pointless register keyword

Removes a few pointless register keywords.  register is merely a compiler
hint that access to the variable should be optimized, but gcc (3.3.6 in my
case) generates the exact same code with and without the keyword, and even
if gcc did something different with register present I think it is doubtful
we would want to optimize access to these variables - especially since this
is generic library code and there are supposed to be optimized versions in
asm/ for anything that really matters speed wise.

(akpm: iirc, keyword register is a gcc no-op unless using -O0)
Signed-off-by: NJesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
上级 51a0f0f6
......@@ -219,7 +219,7 @@ EXPORT_SYMBOL(strlcat);
#undef strcmp
int strcmp(const char *cs, const char *ct)
{
register signed char __res;
signed char __res;
while (1) {
if ((__res = *cs - *ct++) != 0 || !*cs++)
......@@ -239,7 +239,7 @@ EXPORT_SYMBOL(strcmp);
*/
int strncmp(const char *cs, const char *ct, size_t count)
{
register signed char __res = 0;
signed char __res = 0;
while (count) {
if ((__res = *cs - *ct++) != 0 || !*cs++)
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册