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(__arc__)
  13 #  define SIZE (256-4)
  14 #elif defined(__i386__)
  15 #  define SIZE 248
  16 #elif defined(__x86_64__)
  17 #  ifndef _WIN64
  18 #    define SIZE 356
  19 #  else
  20 #    define SIZE (256 - 24)
  21 #  endif
  22 #elif defined (__sparc__)
  23 #  if defined (__arch64__)
  24 #    define SIZE 76
  25 #  else
  26 #    define SIZE 160
  27 #  endif
  28 #elif defined(__hppa__)
  29 #  define SIZE 192
  30 #elif defined (__alpha__)
  31 #  define SIZE 240
  32 #elif defined (__ia64__)
  33 #  define SIZE 272
  34 #elif defined(__mips__)
  35 #  if defined (__mips_abicalls) \
  36       || (defined _MIPS_SIM && (_MIPS_SIM ==_ABIN32 || _MIPS_SIM==_ABI64))
  37 #    define SIZE 240
  38 #  else
  39 #    define SIZE 248
  40 #  endif
  41 #elif defined (__nds32__)
  42 #  define SIZE 248 /* 256 - 8 bytes, only $fp and padding bytes are saved in
  43                       the register save area under O0 optimization level.  */
  44 #elif defined (__powerpc64__) || defined (__ppc64__) || defined (__POWERPC64__) \
  45       || defined (__PPC64__)
  46 #  if _CALL_ELF == 2
  47 #     define SIZE 208
  48 #  else
  49 #     define SIZE 180
  50 #  endif
  51 #elif defined (__powerpc__) || defined (__PPC__) || defined (__ppc__) \
  52       || defined (__POWERPC__) || defined (PPC) || defined (_IBMR2)
  53 #  if defined (__ALTIVEC__)
  54 #    if defined (__APPLE__)
  55 #      define SIZE 204
  56 #    else
  57 #      define SIZE 220
  58 #    endif
  59 #  elif defined (_AIX)
  60 #    define SIZE 208
  61 #  else
  62 #    define SIZE 240
  63 #  endif
  64 #elif defined (__AVR__)
  65 #  define SIZE 254
  66 #elif defined (__s390x__)
  67 #  define SIZE 96  /* 256 - 160 bytes for register save area */
  68 #elif defined (__s390__)
  69 #  define SIZE 160 /* 256 -  96 bytes for register save area */
  70 #elif defined (__SPU__)
  71 #  define SIZE 224
  72 #elif defined (__epiphany__)
  73 #  define SIZE (256 - __EPIPHANY_STACK_OFFSET__)
  74 #elif defined (__RL78__)
  75 #  define SIZE 254
  76 #elif defined (__sh__)
  77 #  define SIZE 252
  78 #elif defined (__frv__)
  79 #  define SIZE 248
  80 #elif defined (xstormy16)
  81 #  define SIZE 254
  82 #elif defined (__nios2__)
  83 #  define SIZE 252
  84 #elif defined (__v850__)
  85 #define SIZE 260
  86 #elif defined (__mn10300__)
  87 #define SIZE 252
  88 #elif defined (__H8300SX__) || defined (__H8300S__) || defined (__H8300H__) || defined (__H8300__)
  89 #define SIZE 252
  90 #elif defined (__M32R__)
  91 #define SIZE 252
  92 #else
  93 #  define SIZE 256
  94 #endif
  95
  96 int foo (void)
  97 {
  98   char arr[SIZE];
  99   arr[0] = 1;
 100   return 0;
 101 }
 102
 103 /* { dg-final { scan-stack-usage "foo\t\(256|264\)\tstatic" } } */
 104 /* { dg-final { cleanup-stack-usage } } */