[PATCH] Rework powerpc reciprocal estimation instruction generation
David Edelsohn
dje.gcc@gmail.com
Wed Jun 2 22:08:00 GMT 2010
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. The following optimizations are done:
>
> float / float -> replace FDIVS with FRES + fixup
> 1.0f / sqrtf(float) -> replace FSQRTS/FDIVS with FRSQRTES + fixup
> double / double -> replace FDIV with FRE + fixup
> 1.0 / sqrt(double) -> replace FSQRT/FDIV with FRSQRTE + fixup
> Are these patches ok to install?
Okay.
Thanks, David
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