On 4/7/2010 18:38, An Yang wrote:
在 2010-04-04日的 20:04 -0700，Arjan van de Ven写道：
Every linux distribution to date picks one "start point" in the x86
evolution,
and supports everything after that. Right now, MeeGo uses "Core2Duo"
as that starting point
(which is now 4 years old or so), which includes Atom as well.....
just glibc use -march=core2 -mtune=atom;
in kernel CONFIG_MPENTIUMM=y;
in meego-rpm-config optflags: i586 %（__global_cflags) -m32 -march=i586
-fasynchronous-unwind-tables
do you think meego should optimize all of the sourcecode with
-march=core2 -mtune=atom?
we actually do. this is an OBS setting
BTW, gcc 4.5, which support -march=atom -mtune=atom, did you ever try
it? there are gcc 4.5 rpm package in opensuse factory.
our gcc also supports this.
-march=atom does not gain you any performance, but makes things a pain for the
build
system... so we're not doing that.
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