gcc/testsuite/gcc.dg/bitint-104.c

   1 /* PR tree-optimization/114555 */
   2 /* { dg-do compile { target bitint } } */
   3 /* { dg-options "-std=c23 -O -fno-tree-forwprop" } */
   4
   5 #if __BITINT_MAXWIDTH__ >= 4139
   6 struct S { _BitInt(31) : 6; _BitInt(513) b : 241; } s;
   7 _BitInt(4139) a;
   8 #endif
   9
  10 void
  11 foo (void)
  12 {
  13 #if __BITINT_MAXWIDTH__ >= 4139
  14   int i = 0;
  15   a -= s.b << i;
  16 #endif
  17 }