Messages in this thread | | | Date | Thu, 31 Oct 2002 00:33:10 -0500 | From | Mark Mielke <> | Subject | Re: CONFIG_TINY |
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On Wed, Oct 30, 2002 at 06:10:02PM -0700, Tom Rini wrote: > On Thu, Oct 31, 2002 at 01:53:14AM +0100, Adrian Bunk wrote: > > 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 CFLAGS should be configurable, but CONFIG_TINY should always prefer -Os over -O2. From 'man gcc':
-Os Optimize for size. -Os enables all -O2 optimizations that do not typically increase code size. It also performs further optimiza- tions designed to reduce code size.
If gcc regularly generates larger code with -Os the answer is to talk to the gcc people, not to avoid using -Os...
mark
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