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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/104522] ICE: in real_to_decimal_for_mode with -O
 -fdump-tree-all-details and long double
Date: Sun, 13 Feb 2022 22:13:00 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104522

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|ICE: in                     |ICE: in
                   |real_to_decimal_for_mode    |real_to_decimal_for_mode
                   |with -O                     |with -O
                   |-fdump-tree-all-details and |-fdump-tree-all-details and
                   |_Float64x                   |long double
      Known to fail|                            |4.4.7

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Here is a better testcase which shows the issue all the way back to at least
4.4.7:
typedef short __attribute__((__vector_size__(16))) V;

long double t1;

void
foo(void)
{
  V t=3D{1024>>1, 0, 0, 0, 32768>>1};
  long double tt =3D *(long double*)&t;
  t1 /=3D tt;
}=