[PATCH] Rework powerpc reciprocal estimation instruction generation
Michael Meissner
meissner@linux.vnet.ibm.com
Thu Jun 3 00:13:00 GMT 2010
On Wed, Jun 02, 2010 at 06:08:21PM -0400, David Edelsohn wrote:
> On Tue, Jun 1, 2010 at 7:21 PM, Michael Meissner
> <meissner@linux.vnet.ibm.com> wrote:
> > This patch improves the generation of reciprocal approximation instructions in
> > the PowerPC. Â The following optimizations are done:
> >
> >     float / float      -> replace FDIVS with FRES + fixup
> > Â Â Â Â 1.0f / sqrtf(float) Â Â -> replace FSQRTS/FDIVS with FRSQRTES + fixup
> >     double / double     -> replace FDIV with FRE + fixup
> > Â Â Â Â 1.0 / sqrt(double) Â Â Â -> replace FSQRT/FDIV with FRSQRTE + fixup
>
> > Are these patches ok to install?
>
> Okay.
The patches were checked in.
--
Michael Meissner, IBM
Until June 30: 4 Technology Place Drive, MS 2203A, Westford, MA, 01886, USA
After June 30: 5 Technology Place Drive, MS 2757, Westford, MA 01886, USA
meissner@linux.vnet.ibm.com
More information about the Gcc-patches
mailing list