[Bug target/91323] LTGT rtx produces UCOMISS instead of COMISS

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91323

--- Comment #8 from Uroš Bizjak <ubizjak at gmail dot com> ---
FWIW, using __float128 also traps on LTGT. The adapted testcase:

--cut here--
/* { dg-do run } */
/* { dg-add-options ieee } */
/* { dg-require-effective-target fenv_exceptions } */

#include <fenv.h>

int
__attribute__ ((noinline, noclone))
f1 (__float128 a, __float128 b)
{
  return __builtin_isless (a, b) || __builtin_isgreater (a, b);
}

int
__attribute__ ((noinline, noclone))
f2 (__float128 a, __float128 b)
{
  return __builtin_islessgreater (a, b);
}

int
__attribute__ ((noinline, noclone))
f3 (__float128 a, __float128 b)
{
  return a < b || a > b;
}

int
main (void)
{
  volatile int r;

  __float128 nanq = __builtin_nanq ("");
  __float128 argq = 1.0q;

  feclearexcept (FE_INVALID);

  r = f1 (nanq, argq);
  if (fetestexcept (FE_INVALID))
    __builtin_abort ();

  r = f2 (nanq, argq);
  if (fetestexcept (FE_INVALID))
    __builtin_abort ();

  r = f3 (nanq, argq);
  if (!fetestexcept (FE_INVALID))
    __builtin_abort ();

  return 0;
}
--cut here--