gcc/testsuite/gcc.dg/pr94002.c

   1 /* PR rtl-optimization/94002 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O1 -fno-tree-dce -fno-tree-reassoc" } */
   4 /* { dg-additional-options "-fPIC" { target fpic } } */
   5
   6 unsigned a, b;
   7
   8 void
   9 foo (void)
  10 {
  11   __builtin_sub_overflow (b, 44852956282LL, &a);
  12   a += ~b;
  13 }