https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80770
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Severity|normal |enhancement
Assignee|unassigned at gcc dot gnu.org |pinskia at gcc dot
gnu.org
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Mine.
Though if we lower, we will still need to optimize the following on the gimple
level:
_1 = BIT_FIELD_REF <_6, 1, 0>;
_2 = ~_1;
_8 = BIT_INSERT_EXPR <_6, _2, 0 (1 bits)>;
to _8 = _6 ^ 1;
Or in general:
BIT_INSERT_EXPR <_6, bit_not (BIT_FIELD_REF <_6, bits, shift>), shift (bits)>
to
_6 ^ shiftedmask(bits, shift);
And maybe add:
BIT_INSERT_EXPR <_6, bit_op (BIT_FIELD_REF <_6, bits, shift>, B), shift (bits)>
_6 bit_op (convert (convert:u B) << shift);
Where u is the unsigned type if B is not an unsigned type.
