1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -fstack-clash-protection -fdump-rtl-pro_and_epilogue -fno-optimize-sibling-calls --param stack-clash-protection-probe-interval=12 --param stack-clash-protection-guard-size=12" } */
       3  /* { dg-require-effective-target supports_stack_clash_protection } */
       4  
       5  int f (int *);
       6  
       7  int
       8  g (int a)
       9  {
      10    return f (&a);
      11  }
      12  
      13  int f1 (void);
      14  int f2 (int);
      15  
      16  int
      17  f3 (void)
      18  {
      19    return f2 (f1 ());
      20  }
      21  
      22  
      23  /* If we have caller implicit probes, then we should not need probes in either callee.
      24     Else callees may need probes, particularly if non-leaf functions require a
      25     frame/frame pointer.  */
      26  /* { dg-final { scan-rtl-dump-times "Stack clash no probe" 2 "pro_and_epilogue" { target caller_implicit_probes } } } */
      27  /* { dg-final { scan-rtl-dump-times "Stack clash inline probe" 1 "pro_and_epilogue" { target { ! caller_implicit_probes } } } } */
      28  /* { dg-final { scan-rtl-dump-times "Stack clash no probe" 1 "pro_and_epilogue" { target { ! caller_implicit_probes } } } } */
      29  
      30  /* Neither of these functions are a nonreturn function.  */
      31  /* { dg-final { scan-rtl-dump-times "Stack clash not noreturn" 2 "pro_and_epilogue" } } */
      32  
      33  /* If the callee realigns the stack or has a mandatory frame, then both functions
      34     have a residual allocation.  Else just g() has a residual allocation.  */
      35  /* { dg-final { scan-rtl-dump-times "Stack clash residual allocation in prologue" 2 "pro_and_epilogue" } } */
      36  
      37  
      38  /* If the target has frame pointers for non-leafs, then both functions will
      39     need a frame pointer.  Otherwise neither should.  */
      40  /* { dg-final { scan-rtl-dump-times "Stack clash no frame pointer needed" 2 "pro_and_epilogue" { target { ! frame_pointer_for_non_leaf } } } } */
      41  /* { dg-final { scan-rtl-dump-times "Stack clash frame pointer needed" 2 "pro_and_epilogue" { target { frame_pointer_for_non_leaf } } } } */
      42  /* { dg-final { scan-rtl-dump-times "Stack clash no probe small stack adjustment in prologue" 2 "pro_and_epilogue" { target { aarch64*-*-* } } } } */