gcc/testsuite/gcc.dg/ipa/pr70646.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -fno-unit-at-a-time" } */
   3
   4 typedef unsigned char u8;
   5 typedef unsigned long long u64;
   6
   7 static inline __attribute__((always_inline)) u64 __swab64p(const u64 *p)
   8 {
   9  return (__builtin_constant_p((u64)(*p)) ? ((u64)( (((u64)(*p) & (u64)0x00000000000000ffULL) << 56) | (((u64)(*p) & (u64)0x000000000000ff00ULL) << 40) | (((u64)(*p) & (u64)0x0000000000ff0000ULL) << 24) | (((u64)(*p) & (u64)0x00000000ff000000ULL) << 8) | (((u64)(*p) & (u64)0x000000ff00000000ULL) >> 8) | (((u64)(*p) & (u64)0x0000ff0000000000ULL) >> 24) | (((u64)(*p) & (u64)0x00ff000000000000ULL) >> 40) | (((u64)(*p) & (u64)0xff00000000000000ULL) >> 56))) : __builtin_bswap64(*p));
  10 }
  11
  12 static inline u64 wwn_to_u64(void *wwn)
  13 {
  14  return __swab64p(wwn);
  15 }
  16
  17 void __attribute__((noinline,noclone)) broken(u64* shost)
  18 {
  19  u8 node_name[8] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
  20  *shost = wwn_to_u64(node_name);
  21 }
  22
  23 void __attribute__((noinline,noclone)) dummy(void)
  24 {
  25  __builtin_abort();
  26 }
  27
  28 int main(int argc, char* argv[])
  29 {
  30  u64 v;
  31
  32  broken(&v);
  33
  34  if(v != (u64)-1)
  35   __builtin_abort();
  36
  37  return 0;
  38 }