[PATCH] Disable use of FMA instructions in branred

Carlos O'Donell carlos@systemhalted.org
Fri Mar 16 15:26:00 GMT 2012


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.



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