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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/99826] GIMPLE FE fails to grok pointer declarators
Date: Tue, 30 Mar 2021 12:59:52 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99826

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
__GIMPLE(ssa) char * foo(char *p) {..}

works for the first issue.  I failed to make the "late" __GIMPLE spec work =
in
a straight-forward manner.  I guess we might want to change the default dum=
ping
to prefer the above order.

The 2nd issue remains and can be seen as

char * foo (char * p)
{
  char * _2;

  <bb 2> :
  _2_2 =3D p_1(D);
  return _2_2;

}

fixing it in a generic way will likely require exposing more of grokdeclara=
tor
and eventually generating the SSA name there directly.  Limited support
is possible of course and the workaround is to declare a decl:

  char * q;

__BB(2):
  q_2 =3D p_1(D);
  return q_2;

which will work at the expense of creating a decl.=