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

   1 /* { dg-do compile } */
   2 /* { dg-options "-fstack-usage" } */
   3 /* { dg-options "-fstack-usage -fomit-frame-pointer" { target { sh*-*-* } } } */
   4
   5 /* This is aimed at testing basic support for -fstack-usage in the back-ends.
   6    See the SPARC back-end for example (grep flag_stack_usage_info in sparc.c).
   7    Once it is implemented, adjust SIZE below so that the stack usage for the
   8    function FOO is reported as 256 or 264 in the stack usage (.su) file.
   9    Then check that this is the actual stack usage in the assembly file.  */
  10
  11 #if defined(__i386__)
  12 #  define SIZE 248
  13 #elif defined(__x86_64__)
  14 #  ifndef _WIN64
  15 #    define SIZE 356
  16 #  else
  17 #    define SIZE (256 - 24)
  18 #  endif
  19 #elif defined (__sparc__)
  20 #  if defined (__arch64__)
  21 #    define SIZE 76
  22 #  else
  23 #    define SIZE 160
  24 #  endif
  25 #elif defined(__hppa__)
  26 #  define SIZE 192
  27 #elif defined (__alpha__)
  28 #  define SIZE 240
  29 #elif defined (__ia64__)
  30 #  define SIZE 272
  31 #elif defined(__mips__)
  32 #  if defined (__mips_abicalls) \
  33       || (defined _MIPS_SIM && (_MIPS_SIM ==_ABIN32 || _MIPS_SIM==_ABI64))
  34 #    define SIZE 240
  35 #  else
  36 #    define SIZE 248
  37 #  endif
  38 #elif defined (__powerpc64__) || defined (__ppc64__) || defined (__POWERPC64__) \
  39       || defined (__PPC64__)
  40 #  define SIZE 180
  41 #elif defined (__powerpc__) || defined (__PPC__) || defined (__ppc__) \
  42       || defined (__POWERPC__) || defined (PPC) || defined (_IBMR2)
  43 #  if defined (__ALTIVEC__)
  44 #    if defined (__APPLE__)
  45 #      define SIZE 204
  46 #    else
  47 #      define SIZE 220
  48 #    endif
  49 #  else
  50 #    define SIZE 240
  51 #  endif
  52 #elif defined (__AVR__)
  53 #  define SIZE 254
  54 #elif defined (__s390x__)
  55 #  define SIZE 96  /* 256 - 160 bytes for register save area */
  56 #elif defined (__s390__)
  57 #  define SIZE 160 /* 256 -  96 bytes for register save area */
  58 #elif defined (__SPU__)
  59 #  define SIZE 224
  60 #elif defined (__epiphany__)
  61 #  define SIZE (256 - __EPIPHANY_STACK_OFFSET__)
  62 #elif defined (__RL78__)
  63 #  define SIZE 254
  64 #else
  65 #  define SIZE 256
  66 #endif
  67
  68 int foo (void)
  69 {
  70   char arr[SIZE];
  71   arr[0] = 1;
  72   return 0;
  73 }
  74
  75 /* { dg-final { scan-stack-usage "foo\t\(256|264\)\tstatic" } } */
  76 /* { dg-final { cleanup-stack-usage } } */