lkml.org 
[lkml]   [2002]   [Nov]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: CONFIG_TINY
    On Thu, Oct 31, 2002 at 09:03:55PM -0500, Bill Davidsen wrote:
    > On Wed, 30 Oct 2002, Tom Rini wrote:
    >
    > > On Thu, Oct 31, 2002 at 01:53:14AM +0100, Adrian Bunk wrote:
    > > > On Wed, 30 Oct 2002, Rasmus Andersen wrote:
    >
    > > > >...
    > > > > As before, your comments and suggestions will be
    > > > > appreciated.
    > > >
    > > > could you try to use "-Os" instead of "-O2" as gcc optimization option
    > > > when CONFIG_TINY is enabled? Something like the following (completely
    > > > untested) patch:
    > >
    > > -Os can produce larger binaries, keep in mind. If we're going to go
    > > this route, how about something generally useful, and allow for general
    > > optimization level / additional CFLAGS to be added.
    >
    > Sure, and unrolling loops can cause cache misses and be slower than that
    > jmp back in a loop. The point is this is a string, the people who think
    > they're able to hand diddle the options can change it. And more to the
    > point anyone who can't find a string in a makefile shouldn't be second
    > guessing the compiler anyway.

    Yes, so why can't those who still need a few more kB after trying some
    of the other options go and find '-O2' and replace it with '-Os' ?

    --
    Tom Rini (TR1265)
    http://gate.crashing.org/~trini/
    -
    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: 2005-03-22 13:30    [W:3.266 / U:0.420 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site