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In-Reply-To: <yddaae3rra6.fsf@manam.CeBiTec.Uni-Bielefeld.DE>
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Date: Tue, 31 May 2011 14:23:00 -0000
Message-ID: <BANLkTik7yj1usFhYBWmxoQEV_3imP7B54Q@mail.gmail.com>
Subject: Re: Use i386/crtfastmath.c on Solaris 2/x86
From: Uros Bizjak <ubizjak@gmail.com>
To: Rainer Orth <ro@cebitec.uni-bielefeld.de>
Cc: gcc-patches@gcc.gnu.org
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On Tue, May 31, 2011 at 2:25 PM, Rainer Orth
<ro@cebitec.uni-bielefeld.de> wrote:

> The only complication is that I need to make sure that SSE insns are only
> used if the host supports them.
>
> Bootstrapped without regressions on i386-pc-solaris2.8,
> i386-pc-solaris2.9, i386-pc-solaris2.11, and sparc-sun-solaris2.11.
>
> The libgcc part depends on the toplevel libgcc patch, so actually
> applying this patch will have to wait until that one is in.
>
> Ok for mainline?
>
> =A0 =A0 =A0 =A0Rainer
>
>
> 2011-05-28 =A0Rainer Orth =A0<ro@CeBiTec.Uni-Bielefeld.DE>
>
> =A0 =A0 =A0 =A0gcc:
> =A0 =A0 =A0 =A0* config/i386/crtfastmath.c [!__x86_64__ && __sun__ && __s=
vr4__]:
> =A0 =A0 =A0 =A0Include <signal.h>, <ucontext.h>.
> =A0 =A0 =A0 =A0(sigill_caught): Define.
> =A0 =A0 =A0 =A0(sigill_hdlr): New function.
> =A0 =A0 =A0 =A0(set_fast_math) [!__x86_64__ && __sun__ && __svr4__]: Chec=
k if SSE
> =A0 =A0 =A0 =A0insns can be executed.
> =A0 =A0 =A0 =A0* config/sol2.h (ENDFILE_SPEC): Use crtfastmath.o if -ffas=
t-math
> =A0 =A0 =A0 =A0etc.
> =A0 =A0 =A0 =A0* config/sparc/sol2.h (ENDFILE_SPEC): Remove.
>
> =A0 =A0 =A0 =A0libgcc:
> =A0 =A0 =A0 =A0* config.host (i[34567]86-*-solaris2*): Add i386/t-crtfm to
> =A0 =A0 =A0 =A0tmake_file.
> =A0 =A0 =A0 =A0Add crtfastmath.o to extra_parts.

Please just put "if (edx & bit_SSE)" part inside existing check. You
will need to split assignment of mxcsr from the declaration, though.

OK with this change.

Thanks,
Uros.