https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90883
Marc Glisse <glisse at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-06-14
Ever confirmed|0 |1
--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
I am surprised the C++ FE doesn't do copy elision in either case. Anyway, slow
gives:
MEM[(struct C *)&D.26222 + 7B] = {};
D.26222.a = {};
D.29804 = D.26222;
D.26222 ={v} {CLOBBER};
return D.29804;
I notice the useless aggregate copy in the middle.
For the suboptimal handling of bitfields, in particular with padding, there are
already a number of reports in bugzilla.
