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From: "Wilco Dijkstra" <wdijkstr@arm.com>
To: "'Andrew Pinski'" <pinskia@gmail.com>
Cc: "GCC Patches" <gcc-patches@gcc.gnu.org>
References: <000a01d055dc$bc2bd660$34838320$@com> <CA+=Sn1nK3RE3fFM7xk0pUkTtbs312BAm=80_UMkVRRKVMk-6zw@mail.gmail.com>
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Subject: RE: [PATCH][AArch64] Make aarch64_min_divisions_for_recip_mul configurable
Date: Tue, 03 Mar 2015 19:08:00 -0000
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> Andrew Pinski wrote:
> On Tue, Mar 3, 2015 at 10:06 AM, Wilco Dijkstra <wdijkstr@arm.com> wrote:
> > This patch makes aarch64_min_divisions_for_recip_mul configurable for f=
loat and double. This
> allows
> > CPUs with really fast or multiple dividers to return 3 (or even 4) if t=
hat happens to be
> faster
> > overall. No code generation change - bootstrap & regression OK.
>=20
> Are you planing on doing the optimization where you turn the divide
> into recip est followed by a few steps?
> Because if so then this should be changed to be handle that case too.

No I don't think that will be faster.

Wilco=20