gcc/testsuite/gcc.dg/stack-usage-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-fstack-usage" } */
   3
   4 /* This is aimed at testing basic support for -fstack-usage in the back-ends.
   5    See the SPARC back-end for an example (grep flag_stack_usage in sparc.c).
   6    Once it is implemented, adjust SIZE below so that the stack usage for the
   7    function FOO is reported as 256 or 264 in the stack usage (.su) file.
   8    Then check that this is the actual stack usage in the assembly file.  */
   9
  10 #if defined(__i386__)
  11 #  define SIZE 248
  12 #elif defined(__x86_64__)
  13 #  define SIZE 356
  14 #elif defined (__sparc__)
  15 #  if defined (__arch64__)
  16 #    define SIZE 76
  17 #  else
  18 #    define SIZE 160
  19 #  endif
  20 #elif defined(__hppa__)
  21 #  define SIZE 192
  22 #elif defined (__alpha__)
  23 #  define SIZE 240
  24 #elif defined (__ia64__)
  25 #  define SIZE 272
  26 #elif defined(__mips__)
  27 #  if defined (__mips_abicalls) \
  28       || (defined _MIPS_SIM && (_MIPS_SIM ==_ABIN32 || _MIPS_SIM==_ABI64))
  29 #    define SIZE 240
  30 #  else
  31 #    define SIZE 248
  32 #  endif
  33 #elif defined (__powerpc__) || defined (__PPC__) || defined (__ppc__) \
  34       || defined (__POWERPC__) || defined (PPC) || defined (_IBMR2)
  35 #  define SIZE 240
  36 #elif defined (__AVR__)
  37 #  define SIZE 254
  38 #else
  39 #  define SIZE 256
  40 #endif
  41
  42 int foo (void)
  43 {
  44   char arr[SIZE];
  45   arr[0] = 1;
  46   return 0;
  47 }
  48
  49 /* { dg-final { scan-stack-usage "foo\t\(256|264\)\tstatic" } } */
  50 /* { dg-final { cleanup-stack-usage } } */