[Bug middle-end/68855] PAREN_EXPR not "ignored" where possible

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68855

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I wonder if lower complex should do a better job in the first place:
that is from:
  _9 = _8 + __complex__ (6.0e+0, 1.0e+0);
  _11 = ((_9));
  (*a_7(D))[_6] = _11;

instead of producing:
  _9 = COMPLEX_EXPR <_15, _14>;
  _11 = ((_9));
  _19 = REALPART_EXPR <_11>;
  _20 = IMAGPART_EXPR <_11>;

It should produce:
  _19 = ((_15));
  _20 = ((_24));

Instead. that is expand PAREN_EXPR into its components.