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  /* { dg-skip-if "" { *-*-* } { "-fstack-protector*" } { "" } } */
       5  
       6  
       7  extern void foo (char *);
       8  extern void bar (void);
       9  
      10  
      11  /* This is a leaf with a frame that is large enough to require probing with
      12     a residual allocation, but small enough to probe inline.  */
      13  void
      14  f4 (void)
      15  {
      16    char buf[4096 + 512];
      17    asm volatile ("" : : "g" (&buf) : "memory");
      18  }
      19  
      20  
      21  /* This is a non-leaf with a frame large enough to require probing and
      22     a residual allocation, but small enough to probe inline.  */
      23  void
      24  f5 (void)
      25  {
      26    char buf[4096 + 512];
      27    foo (buf);
      28  }
      29  
      30  /* This is a leaf with a frame that is large enough to require probing with
      31     a loop plus a residual allocation.  */
      32  void
      33  f6 (void)
      34  {
      35    char buf[4096 * 10 + 512];
      36    asm volatile ("" : : "g" (&buf) : "memory");
      37  }
      38  
      39  
      40  /* This is a non-leaf with a frame large enough to require probing with
      41     a loop plus a residual allocation.  */
      42  void
      43  f7 (void)
      44  {
      45    char buf[4096 * 10 + 512];
      46    foo (buf);
      47  }
      48  
      49  /* { dg-final { scan-rtl-dump-times "Stack clash inline probes" 2 "pro_and_epilogue" } } */
      50  /* { dg-final { scan-rtl-dump-times "Stack clash probe loop" 2 "pro_and_epilogue" } } */
      51  /* { dg-final { scan-rtl-dump-times "Stack clash residual allocation in prologue" 4 "pro_and_epilogue" } } */
      52  /* { dg-final { scan-rtl-dump-times "Stack clash not noreturn" 4 "pro_and_epilogue" } } */
      53  
      54  /* { dg-final { scan-rtl-dump-times "Stack clash no frame pointer needed" 4 "pro_and_epilogue" { target { ! frame_pointer_for_non_leaf } } } } */
      55  /* { dg-final { scan-rtl-dump-times "Stack clash no frame pointer needed" 2 "pro_and_epilogue" { target { frame_pointer_for_non_leaf } } } } */
      56  /* { dg-final { scan-rtl-dump-times "Stack clash frame pointer needed" 2 "pro_and_epilogue" { target { frame_pointer_for_non_leaf } } } } */