gcc/testsuite/gcc.target/mips/dpsq_sa_l_w.c

/* { dg-do compile { target { fixed_point } } } */
/* This test requires widening_mul */
/* { dg-options "-mgp32 -mdsp -fexpensive-optimizations" } */
/* { dg-skip-if "code quality test" { *-*-* } { "-O0" } { "" } } */
/* { dg-final { scan-assembler-times "\tdpsq_sa.l.w\t\\\$ac" 2 } } */

NOMIPS16 _Sat long long _Fract
f1 (_Sat long _Fract x, _Sat long _Fract y, _Sat long long _Fract z)
{
  return z - (_Sat long long _Fract) x * y;
}

NOMIPS16 _Sat long long _Fract
f2 (_Sat long _Fract x, _Sat long _Fract y, _Sat long long _Fract z)
{
  _Sat long long _Fract t = (_Sat long long _Fract) x * y;
  int temp = 5;
  if (temp == 5)
    z -= t;
  return z;
}

long long _Fract
f3 (long _Fract x, long _Fract y, long long _Fract z)
{
  return z - (long long _Fract) x * y;
}

long long _Fract
f4 (long _Fract x, long _Fract y, long long _Fract z)
{
  long long _Fract t = (long long _Fract) x * y;
  int temp = 5;
  if (temp == 5)
    z -= t;
  return z;
}