From owner-freebsd-current  Tue Oct  8 12:43: 0 2002
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Date: Tue, 8 Oct 2002 21:43:56 +0200 (CEST)
From: Martin Blapp <mb@imp.ch>
To: <current@freebsd.org>
Cc: <kan@freebsd.org>
Subject: -march=pentium4 (CPUTYPE?=p4) breaks libm (src/lib/msun)
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Hi,

If one does libm compile with -march=pentium4, there seem some
math related functions be broken. -march=pentiumpro still works fine.

Happens with gcc 3.1.1 and gcc 3.2.1 prerelease.

Ports which are broken with libm and -march=pentium4

- xmms (no sound)
- mpg123 (no sound)
- openoffice (no text everywhere and no menues)

So until this is fixed, people should stay away from using
-march=pentium4. I'll see if I can find the broken function.

-march=athlon seems to work fine.
-march=pentiumpro seems to work fine
-march=pentium seems to work fine

So don't use CPUTYPE?=p4 in your /etc/make.conf. Looks like there could
be some crashes related to this one. Bezier and X-Server crashes ? Or is
nobody using CPUTYPE?=p4 ?

Martin

Martin Blapp, <mb@imp.ch> <mbr@FreeBSD.org>
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