This is the mail archive of the
libc-alpha@sourceware.org
mailing list for the glibc project.
Re: [PATCH] Disable use of FMA instructions in branred
- From: "Carlos O'Donell" <carlos at systemhalted dot org>
- To: Andreas Schwab <schwab at linux-m68k dot org>
- Cc: libc-alpha at sourceware dot org
- Date: Fri, 16 Mar 2012 11:25:46 -0400
- Subject: Re: [PATCH] Disable use of FMA instructions in branred
- References: <m2obrwshli.fsf@igel.home>
On Fri, Mar 16, 2012 at 11:14 AM, Andreas Schwab <schwab@linux-m68k.org> wrote:
> __branred depends on precise double precision, and falls down completely
> if the compiler is allowed to contract floating-point expressions (which
> is does by default).
>
> Andreas.
>
> 2012-03-16 ?Andreas Schwab ?<schwab@linux-m68k.org>
>
> ? ? ? ?* configure.in (libc_cv_cc_nofma): Check for option to disable
> ? ? ? ?generation of FMA instructions.
> ? ? ? ?* configure: Regenerate.
> ? ? ? ?* config.make.in (config-cflags-nofma): Set from libc_cv_cc_nofma.
> ? ? ? ?* math/Makefile (CFLAGS-branred.c): Define.
Is this caught by the current testsuite?
If not, could we add a test for this regression?
Cheers,
Carlos.