Subversion Repositories openrisc_2011-10-31

/* { dg-do run { xfail *-*-* } } */

/* We don't (and don't want to) perform this optimisation on soft-float

   targets, where each addition is a library call.  This test requires

   -fassociative-math for enabling the variable-expansion as well as

   -fsigned-zeros for honoring the sign of zero; but

   they can not co-exist; also under -funsafe-math-optimizations, so we

   expect it to fail.  */

/* { dg-require-effective-target hard_float } */

/* { dg-options "-O2 -funroll-loops -funsafe-math-optimizations -fvariable-expansion-in-unroller -fdump-rtl-loop2_unroll" } */

extern void abort (void);

extern void exit (int);

float __attribute__((noinline))

foo (float d, int n)

{

  unsigned i;

  float accum = d;

  for (i = 0; i < n; i++)

    accum += d;

  return accum;

}

int

main ()

{

  if (__builtin_copysignf (1.0, foo (0.0 / -5.0, 10)) != -1.0)

    abort ();

  exit (0);

}

/* { dg-final { scan-rtl-dump "Expanding Accumulator" "loop2_unroll" } } */

/* { dg-final { cleanup-rtl-dump "loop*" } } */