File: slsr-34.c

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gcc-arm-none-eabi 15%3A7-2018-q2-5
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/* Verify straight-line strength reduction for a candidate with a basis
   hidden by two phi dependences, and having a known stride.  */

/* { dg-do compile } */
/* { dg-options "-O3 -fdump-tree-optimized" } */

extern void
g (void);

int
f (int c, int i)
{
  int a1, a2, a3, x1, x2, x3, x;

  a1 = i * 16;
  x1 = c + a1;

  i = i + 2;
  a2 = i * 16;
  x2 = c + a2;

  if (x2 > 6)
    {
      if (c < 200)
	i = i + 2;
      else
	i = i + 4;
      g ();
    }
  else
    i = i + 6;

  i = i + 2;
  a3 = i * 16;
  x3 = c + a3;

  x = x1 + x2 + x3;
  return x;
}

/* { dg-final { scan-tree-dump-times " \\* " 1 "optimized" } } */
/* { dg-final { scan-tree-dump-times "PHI" 2 "optimized" } } */