On Thu, Jul 15, 2021 at 8:33 PM Richard Biener <rguent...@suse.de> wrote: > > The following defaults --param vect-partial-vector-usage to zero > for x86_64 matching existing behavior where support for this > is not present. > > OK for trunk? > Ok. > Thanks, > Richard/ > > 2021-07-15 Richard Biener <rguent...@suse.de> > > * config/i386/i386-options.c (ix86_option_override_internal): Set > param_vect_partial_vector_usage to zero if not set. > --- > gcc/config/i386/i386-options.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/gcc/config/i386/i386-options.c b/gcc/config/i386/i386-options.c > index 7cba655595e..3416a4f1752 100644 > --- a/gcc/config/i386/i386-options.c > +++ b/gcc/config/i386/i386-options.c > @@ -2834,6 +2834,11 @@ ix86_option_override_internal (bool main_args_p, > > SET_OPTION_IF_UNSET (opts, opts_set, param_ira_consider_dup_in_all_alts, > 0); > > + /* Fully masking the main or the epilogue vectorized loop is not > + profitable generally so leave it disabled until we get more > + fine grained control & costing. */ > + SET_OPTION_IF_UNSET (opts, opts_set, param_vect_partial_vector_usage, 0); > + > return true; > } > > -- > 2.26.2
-- BR, Hongtao
