On Fri, Nov 16, 2018 at 7:02 PM Kyrill Tkachov <kyrylo.tkac...@foss.arm.com> wrote: > > Hi all, > > This is an alternative to > https://gcc.gnu.org/ml/gcc-patches/2018-11/msg00694.html > As richi suggested, this disables unrolling of loops vectorised with > variable-length SVE > in the vectoriser itself through the loop->unroll member. > > It took me a few tries to get it right, as it needs to be set to '1' to > disable unrolling, > the rationale for that mechanism is described in the comment in cfgloop.h. > > Bootstrapped and tested on aarch64-none-linux-gnu. > > Is this ok for trunk?
OK. Richard. > Thanks, > Kyrill > > 2018-11-15 Kyrylo Tkachov <kyrylo.tkac...@arm.com> > > * tree-vect-loop.c (vect_transform_loop): Disable further unrolling > of the loop if vf is non-constant. > > 2018-11-15 Kyrylo Tkachov <kyrylo.tkac...@arm.com> > > * gcc.target/aarch64/sve/unroll-1.c: New test.
