1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -fipa-ra -fomit-frame-pointer -fno-optimize-sibling-calls" } */
       3  /* { dg-additional-options "-mregparm=1" { target ia32 } } */
       4  
       5  /* Test -fipa-ra optimization on self-recursive function.  */
       6  
       7  static int __attribute__((noinline))
       8  bar (int x)
       9  {
      10    if (x > 4)
      11      return bar (x - 3);
      12    return 0;
      13  }
      14  
      15  int __attribute__((noinline))
      16  foo (int y)
      17  {
      18    return y + bar (y);
      19  }
      20  
      21  /* Check that no registers are saved/restored. */
      22  /* { dg-final { scan-assembler-not "push" } } */
      23  /* { dg-final { scan-assembler-not "pop" } } */
      24  
      25  /* Check that addition uses dx. */
      26  /* { dg-final { scan-assembler-times "addl\t%\[re\]?dx, %\[re\]?ax" 1 } } */
      27  
      28  /* Verify that bar is self-recursive.  */
      29  /* { dg-final { scan-assembler-times "call\t_?bar" 2 } } */