[cfe-commits] [PATCH 3/3] Make fp-contract=fast default for Freescale vendor

Hal Finkel hfinkel at anl.gov
Wed Sep 19 12:49:41 PDT 2012


On Wed, 19 Sep 2012 10:08:43 -0500
"William J. Schmidt" <wschmidt at linux.vnet.ibm.com> wrote:

> FWIW, general expectations for PowerPC are that fused multiply-add is
> available by default.  For example, the default for GCC on
> powerpc64-unknown-linux-gnu is to generate fmadd at -O1 and above.  I
> may be missing the point, but I don't see a need for the default to be
> dependent on the vendor in this case.

Bill,

Would it make sense for this behavior to change depending on whether
the compiler was invoked as 'cc' or 'c99' for POSIX compliance?

Thanks again,
Hal

> 
> My two cents,
> Bill



-- 
Hal Finkel
Postdoctoral Appointee
Leadership Computing Facility
Argonne National Laboratory



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