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 example (grep flag_stack_usage_info 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(__aarch64__)
  11 #  define SIZE 256 /* No frame pointer for leaf functions (default) */
  12 #elif defined(__i386__)
  13 #  define SIZE 248
  14 #elif defined(__x86_64__)
  15 #  ifndef _WIN64
  16 #    define SIZE 356
  17 #  else
  18 #    define SIZE (256 - 24)
  19 #  endif
  20 #elif defined (__sparc__)
  21 #  if defined (__arch64__)
  22 #    define SIZE 76
  23 #  else
  24 #    define SIZE 160
  25 #  endif
  26 #elif defined(__hppa__)
  27 #  define SIZE 192
  28 #elif defined (__alpha__)
  29 #  define SIZE 240
  30 #elif defined (__ia64__)
  31 #  define SIZE 272
  32 #elif defined(__mips__)
  33 #  if defined (__mips_abicalls) \
  34       || (defined _MIPS_SIM && (_MIPS_SIM ==_ABIN32 || _MIPS_SIM==_ABI64))
  35 #    define SIZE 240
  36 #  else
  37 #    define SIZE 248
  38 #  endif
  39 #elif defined (__powerpc64__) || defined (__ppc64__) || defined (__POWERPC64__) \
  40       || defined (__PPC64__)
  41 #  define SIZE 180
  42 #elif defined (__powerpc__) || defined (__PPC__) || defined (__ppc__) \
  43       || defined (__POWERPC__) || defined (PPC) || defined (_IBMR2)
  44 #  if defined (__ALTIVEC__)
  45 #    if defined (__APPLE__)
  46 #      define SIZE 204
  47 #    else
  48 #      define SIZE 220
  49 #    endif
  50 #  else
  51 #    define SIZE 240
  52 #  endif
  53 #elif defined (__AVR__)
  54 #  define SIZE 254
  55 #elif defined (__s390x__)
  56 #  define SIZE 96  /* 256 - 160 bytes for register save area */
  57 #elif defined (__s390__)
  58 #  define SIZE 160 /* 256 -  96 bytes for register save area */
  59 #elif defined (__SPU__)
  60 #  define SIZE 224
  61 #elif defined (__epiphany__)
  62 #  define SIZE (256 - __EPIPHANY_STACK_OFFSET__)
  63 #elif defined (__RL78__)
  64 #  define SIZE 254
  65 #elif defined (__sh__)
  66 #  define SIZE 252
  67 #elif defined (__frv__)
  68 #  define SIZE 248
  69 #elif defined (xstormy16)
  70 #  define SIZE 254
  71 #else
  72 #  define SIZE 256
  73 #endif
  74
  75 int foo (void)
  76 {
  77   char arr[SIZE];
  78   arr[0] = 1;
  79   return 0;
  80 }
  81
  82 /* { dg-final { scan-stack-usage "foo\t\(256|264\)\tstatic" } } */
  83 /* { dg-final { cleanup-stack-usage } } */