File: pr78546-1.c

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gcc-arm-none-eabi 15%3A14.2.rel1-1
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/* PR rtl-optimization/78546 */
/* { dg-do run { target int128 } } */

typedef unsigned __int128 u128;
u128 b;

static inline u128
foo (u128 p1)
{
  p1 += ~b;
  return -p1;
}

int
main ()
{
  asm volatile ("" : : : "memory");
  u128 x = foo (~0x7fffffffffffffffLL);
  if (x != 0x8000000000000001ULL)
    __builtin_abort ();
  return 0;
}