On Tue, 14 Apr 2020, Jan Hubicka wrote:
> >
> > But we're using it in indirect_ref_may_alias_decl_p as
> >
> > /* If second reference is view-converted, give up now. */
> > if (same_type_for_tbaa (TREE_TYPE (dbase2), TREE_TYPE (ptrtype2)) !=
> > 1)
> > return true;
> >
>
>
> But we're using it in indirect_ref_may_alias_decl_p as
>
> /* If second reference is view-converted, give up now. */
> if (same_type_for_tbaa (TREE_TYPE (dbase2), TREE_TYPE (ptrtype2)) !=
> 1)
> return true;
>
> and clearly if TREE_TYPE (ptrtype2) is void * while
On Tue, 14 Apr 2020, Jan Hubicka wrote:
> >
> > Note that now, looking again, the TYPE_STRUCTURAL_EQUALITY_P in my patch
> > doesn't match that of get_alias_set. Since we're looking at the alias
> > sets of type1 and type2 anyway we could resort to alias_sets_conflict_p
> > for the two
>
> Note that now, looking again, the TYPE_STRUCTURAL_EQUALITY_P in my patch
> doesn't match that of get_alias_set. Since we're looking at the alias
> sets of type1 and type2 anyway we could resort to alias_sets_conflict_p
> for the two POINTER_TYPE_P case and return -1 then. Not sure about
>
On Tue, 14 Apr 2020, Jan Hubicka wrote:
> > On Tue, 14 Apr 2020, Richard Sandiford wrote:
> >
> > > Richard Biener writes:
> > > > This makes same_type_for_tbaa_p conservative in the same way
> > > > get_alias_set is about void * which we allow to alias all other
> > > > pointers.
> > > >
> > >
> On Tue, 14 Apr 2020, Richard Sandiford wrote:
>
> > Richard Biener writes:
> > > This makes same_type_for_tbaa_p conservative in the same way
> > > get_alias_set is about void * which we allow to alias all other
> > > pointers.
> > >
> > > Bootstrap & regtest running on
On Tue, 14 Apr 2020, Richard Sandiford wrote:
> Richard Biener writes:
> > This makes same_type_for_tbaa_p conservative in the same way
> > get_alias_set is about void * which we allow to alias all other
> > pointers.
> >
> > Bootstrap & regtest running on x86_64-unknown-linux-gnu.
> >
> >
Richard Biener writes:
> This makes same_type_for_tbaa_p conservative in the same way
> get_alias_set is about void * which we allow to alias all other
> pointers.
>
> Bootstrap & regtest running on x86_64-unknown-linux-gnu.
>
> Honza, is this what you had in mind?
>
> Thanks,
> Richard.
>
>
This makes same_type_for_tbaa_p conservative in the same way
get_alias_set is about void * which we allow to alias all other
pointers.
Bootstrap & regtest running on x86_64-unknown-linux-gnu.
Honza, is this what you had in mind?
Thanks,
Richard.
2020-04-14 Richard Biener
PR
