> -----Original Message----- > From: Prathamesh Kulkarni <prathamesh.kulka...@linaro.org> > Sent: 29 June 2021 08:21 > To: gcc Patches <gcc-patches@gcc.gnu.org>; Kyrylo Tkachov > <kyrylo.tkac...@arm.com> > Subject: Re: [ARM] PR66791: Gate comparison in vca intrinsics on > __FAST_MATH__ > > On Tue, 22 Jun 2021 at 15:04, Prathamesh Kulkarni > <prathamesh.kulka...@linaro.org> wrote: > > > > Hi, > > The attached patch gates abs(__a) cmp abs(__b) for vca intrinsics on > > __FAST_MATH__. I moved vabs intrinsics before vcage_f32 since vca > > intrinsics use those. > > Bootstrapped+tested on arm-linux-gnueabihf. > > OK to commit ? > ping https://gcc.gnu.org/pipermail/gcc-patches/2021-June/573384.html
Hmm, does this result in better optimisation? I guess it's expressing the operation at a higher level, but there's now conceptually three operations (2xvabs + 1 comparison) that would need to be folded away by the optimisers... Thanks, Kyrill > > Thanks, > Prathamesh > > > > Thanks, > > Prathamesh
