Date: Mon, 5 Feb 1996 09:20:08 PST From: "Marty Leisner" <leisner@sdsp.mc.xerox.com> To: Chien-Ta Lee <jdli@linux.csie.nctu.edu.tw> Cc: freebsd-current@freebsd.org Subject: Re: make world with -fomit-frame-pointer Message-ID: <9602051720.AA00240@gnu.mc.xerox.com> In-Reply-To: Your message of "Fri, 02 Feb 1996 19:26:34 PST." <199602030326.LAA23878@linux.csie.nctu.edu.tw>
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> > Hi : > > I noticed an gcc option from recently pentium-gcc discussions, > that's "-fomit-frame-pointer". (I remembered linux often use it) > I man gcc and it said that the option will make debug impossible. > I always making my world with "-O2 -m486", is it ok to use this > option to make world ? How about make kernel ?! > About make kernel, will "-O2" or "-O2 -m486" make kernel run faster ? > > Thanks. > -- > > For grunts, I tried -O2 -fomit-frame-pointer when building the kernel... It become bigger (;-) [maybe loops got unrolled...] I think it would be interested to run lmbench or something on different kernels... -- marty leisner@sdsp.mc.xerox.com Member of the League for Programming Freedom
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