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Date:      Sat, 22 Mar 2003 01:54:35 +0100
From:      Till Riedel <till@f111.hadiko.de>
To:        freebsd-current@freebsd.org
Subject:   Re: libm problem
Message-ID:  <20030322005435.GA8393@f111.hadiko.de>
In-Reply-To: <20030322111233.F4471@gamplex.bde.org>
References:  <20030318173051.GA2322@f111.hadiko.de> <20030319131317.GA670@HAL9000.homeunix.com> <20030321235237.GA8097@f111.hadiko.de> <20030322111233.F4471@gamplex.bde.org>

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I now know the thing that makes it break.

cc -O2 -pipe -mcpu=pentiumpro -c /usr/src/lib/msun/src/e_pow.c
works fine!
cc -O0 -pipe -march=pentium4 -c /usr/src/lib/msun/src/e_pow.c
... works
but...
cc -O -pipe -march=pentium4 -c /usr/src/lib/msun/src/e_pow.c
breaks it. Hey its only gcc :-), nothing to worry about.
I think that 0 is nice number: so why don't optimize everithing to down it.
-O seems to minimize numbers not calculation time. Does anyone know the
flag to turn that off.

till

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