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

   1 /* { dg-do compile } */
   2 /* { dg-options "-fstack-usage" } */
   3 /* nvptx doesn't have a reg allocator, and hence no stack usage data.  */
   4 /* { dg-skip-if "" { nvptx-*-* } } */
   5
   6 /* This is aimed at testing basic support for -fstack-usage in the back-ends.
   7    See the SPARC back-end for example (grep flag_stack_usage_info in sparc.c).
   8    Once it is implemented, adjust SIZE below so that the stack usage for the
   9    function FOO is reported as 256 or 264 in the stack usage (.su) file.
  10    Then check that this is the actual stack usage in the assembly file.  */
  11
  12 #if defined(__aarch64__)
  13 #  define SIZE 256 /* No frame pointer for leaf functions (default) */
  14 #elif defined(__arc__)
  15 #  define SIZE (256-4)
  16 #elif defined(__i386__)
  17 #  define SIZE 248
  18 #elif defined(__x86_64__)
  19 #  ifndef _WIN64
  20 #    define SIZE 356
  21 #  else
  22 #    define SIZE (256 - 24)
  23 #  endif
  24 #elif defined (__sparc__)
  25 #  if defined (__arch64__)
  26 #    define SIZE 76
  27 #  else
  28 #    define SIZE 160
  29 #  endif
  30 #elif defined(__hppa__)
  31 #  define SIZE 192
  32 #elif defined (__alpha__)
  33 #  define SIZE 240
  34 #elif defined (__ia64__)
  35 #  define SIZE 272
  36 #elif defined(__mips__)
  37 #  if defined (__mips_abicalls) \
  38       || (defined _MIPS_SIM && (_MIPS_SIM ==_ABIN32 || _MIPS_SIM==_ABI64))
  39 #    define SIZE 240
  40 #  else
  41 #    define SIZE 248
  42 #  endif
  43 #elif defined (__nds32__)
  44 #  define SIZE 248 /* 256 - 8 bytes, only $fp and padding bytes are saved in
  45                       the register save area under O0 optimization level.  */
  46 #elif defined (__powerpc64__) || defined (__ppc64__) || defined (__POWERPC64__) \
  47       || defined (__PPC64__)
  48 #  if _CALL_ELF == 2
  49 #     define SIZE 208
  50 #  else
  51 #     define SIZE 180
  52 #  endif
  53 #elif defined (__powerpc__) || defined (__PPC__) || defined (__ppc__) \
  54       || defined (__POWERPC__) || defined (PPC) || defined (_IBMR2)
  55 #  if defined (__ALTIVEC__)
  56 #    if defined (__APPLE__)
  57 #      define SIZE 204
  58 #    else
  59 #      define SIZE 220
  60 #    endif
  61 #  elif defined (_AIX)
  62 #    define SIZE 208
  63 #  else
  64 #    define SIZE 240
  65 #  endif
  66 #elif defined (__riscv)
  67 #  define SIZE 240
  68 #elif defined (__AVR__)
  69 #if defined (__AVR_3_BYTE_PC__ )
  70 #  define SIZE 251 /* 256 - 2 bytes for Y - 3 bytes for return address */
  71 #else
  72 #  define SIZE 252 /* 256 - 2 bytes for Y - 2 bytes for return address */
  73 #endif
  74 #elif defined (__s390x__)
  75 #  define SIZE 96  /* 256 - 160 bytes for register save area */
  76 #elif defined (__s390__)
  77 #  define SIZE 160 /* 256 -  96 bytes for register save area */
  78 #elif defined (__SPU__)
  79 #  define SIZE 224
  80 #elif defined (__epiphany__)
  81 #  define SIZE (256 - __EPIPHANY_STACK_OFFSET__)
  82 #elif defined (__RL78__)
  83 #  define SIZE 254
  84 #elif defined (__sh__)
  85 #  define SIZE 252
  86 #elif defined (__frv__)
  87 #  define SIZE 248
  88 #elif defined (xstormy16)
  89 #  define SIZE 254
  90 #elif defined (__nios2__)
  91 #  define SIZE 252
  92 #elif defined (__v850__)
  93 #define SIZE 260
  94 #elif defined (__mn10300__)
  95 #define SIZE 252
  96 #elif defined (__H8300SX__) || defined (__H8300S__) || defined (__H8300H__) || defined (__H8300__)
  97 #define SIZE 252
  98 #elif defined (__M32R__)
  99 #define SIZE 252
 100 #else
 101 #  define SIZE 256
 102 #endif
 103
 104 int foo (void)
 105 {
 106   char arr[SIZE];
 107   arr[0] = 1;
 108   return 0;
 109 }
 110
 111 /* { dg-final { scan-stack-usage "foo\t\(256|264\)\tstatic" } } */
 112 /* { dg-final { cleanup-stack-usage } } */