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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/113409] ICE: in omp_extract_for_data, at
 omp-general.cc:411 with -fopenmp-simd and _BitInt()
Date: Tue, 16 Jan 2024 12:10:26 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113409

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |burnus at gcc dot gnu.org

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
On e.g.
void bar (_BitInt(931));

void
foo (_BitInt(931) x)
{
  #pragma omp parallel for
  for (_BitInt(931) i =3D 0; i < x; ++i)
    bar (i);
}

clang emits
warning: OpenMP loop iteration variable cannot have more than 64 bits size =
and
will be narrowed [-Wopenmp-loop-form]
warning.
On
void bar (__int128);

void
foo (__int128 x)
{
  #pragma omp parallel for // schedule(runtime)
  for (__int128 i =3D 0; i < x; ++i)
    bar (i);
}
we actually emit something that probably works and with schedule(runtime)
silently assume it won't be more than 64-bit of iterations.
So supposedly we should treat BITINT_TYPEs the same.=