https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118976
--- Comment #14 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to avieira from comment #13)
>
> the VECTOR_CST just goes over the elements in the VECTOR_CST and calls this
> recursively, making the change:
> --- a/gcc/fold-const.cc
> +++ b/gcc/fold-const.cc
> @@ -1964,7 +1964,7 @@ const_unop (enum tree_code code, tree type, tree arg0)
> if (TREE_CODE (arg0) == INTEGER_CST)
> return fold_not_const (arg0, type);
> else if (POLY_INT_CST_P (arg0))
> - return wide_int_to_tree (type, -poly_int_cst_value (arg0));
> + return wide_int_to_tree (type, ~poly_int_cst_value (arg0));
> /* Perform BIT_NOT_EXPR on each element individually. */
> else if (TREE_CODE (arg0) == VECTOR_CST)
> {
>
> fixes it for me.
>
> I'm going on holidays tomorrow, so I'll leave this for someone with a bit
> more time to pick up. Richard S it seems to have been your change in:
> https://gcc.gnu.org/git/?p=gcc.git;a=commit;
> h=36fd64086542ed734aded849304723218fa4d6fd so I'll wait for others to
> confirm my thinking here, I always get nervous around bit fiddling ;)
Yes that does look like the fix and it looks like obvious and looks like it was
just a typo.
Though I wonder if we could change fold_not_const to handle it instead. But
other than that looks correct.
