gcc/testsuite/gcc.c-torture/execute/20190820-1.c

   1 /* PR rtl-optimization/91347 */
   2 /* Reported by John David Anglin <danglin@gcc.gnu.org> */
   3
   4 typedef unsigned short __u16;
   5 typedef __signed__ int __s32;
   6 typedef unsigned int __u32;
   7 typedef __signed__ long long __s64;
   8 typedef unsigned long long __u64;
   9 typedef __u16 u16;
  10 typedef __s32 s32;
  11 typedef __u32 u32;
  12 typedef __u64 u64;
  13 typedef _Bool bool;
  14 typedef s32 int32_t;
  15 typedef u32 uint32_t;
  16 typedef u64 uint64_t;
  17
  18 char hex_asc_upper[16];
  19 u16 decpair[100];
  20
  21 static __attribute__ ((noipa)) void
  22 put_dec_full4 (char *buf, unsigned r)
  23 {
  24  unsigned q;
  25  q = (r * 0x147b) >> 19;
  26  *((u16 *)buf) = decpair[r - 100*q];
  27  buf += 2;
  28  *((u16 *)buf) = decpair[q];
  29 }
  30
  31 static __attribute__ ((noipa)) unsigned
  32 put_dec_helper4 (char *buf, unsigned x)
  33 {
  34   uint32_t q = (x * (uint64_t)0x346DC5D7) >> 43;
  35   put_dec_full4(buf, x - q * 10000);
  36   return q;
  37 }
  38
  39 static __attribute__ ((noipa)) char *
  40 put_dec (char *buf, unsigned long long n)
  41 {
  42  uint32_t d3, d2, d1, q, h;
  43  d1 = ((uint32_t)n >> 16);
  44  h = (n >> 32);
  45  d2 = (h ) & 0xffff;
  46  d3 = (h >> 16);
  47  q = 656 * d3 + 7296 * d2 + 5536 * d1 + ((uint32_t)n & 0xffff);
  48  q = put_dec_helper4(buf, q);
  49  q += 7671 * d3 + 9496 * d2 + 6 * d1;
  50  q = put_dec_helper4(buf+4, q);
  51  q += 4749 * d3 + 42 * d2;
  52  q = put_dec_helper4(buf+8, q);
  53  return buf;
  54 }
  55
  56 struct printf_spec {
  57  unsigned int type:8;
  58  signed int field_width:24;
  59  unsigned int flags:8;
  60  unsigned int base:8;
  61  signed int precision:16;
  62 } __attribute__((__packed__));
  63
  64 static __attribute__ ((noipa)) char *
  65 number (char *buf, char *end, unsigned long long num, struct printf_spec spec)
  66 {
  67
  68  char tmp[3 * sizeof(num)] __attribute__((__aligned__(2)));
  69  char sign;
  70  char locase;
  71  int need_pfx = ((spec.flags & 64) && spec.base != 10);
  72  int i;
  73  bool is_zero = num == 0LL;
  74  int field_width = spec.field_width;
  75  int precision = spec.precision;
  76
  77  i = 0;
  78  if (num < spec.base)
  79   tmp[i++] = hex_asc_upper[num] | locase;
  80  else if (spec.base != 10) {
  81   int mask = spec.base - 1;
  82   int shift = 3;
  83   if (spec.base == 16)
  84    shift = 4;
  85   else
  86     __builtin_abort ();
  87   do {
  88    tmp[i++] = (hex_asc_upper[((unsigned char)num) & mask] | locase);
  89    num >>= shift;
  90   } while (num);
  91  } else {
  92   i = put_dec(tmp, num) - tmp;
  93  }
  94  return buf;
  95 }
  96
  97 static __attribute__ ((noipa)) char *
  98 pointer_string (char *buf, char *end, const void *ptr, struct printf_spec spec)
  99 {
 100  spec.base = 16;
 101  spec.flags = 0;
 102  return number(buf, end, 100, spec);
 103 }
 104
 105 int
 106 main (void)
 107 {
 108   struct printf_spec spec;
 109   char *s = pointer_string (0, 0, 0, spec);
 110   return 0;
 111 }