gcc/testsuite/gcc.dg/fold-copysign-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-cddce1" } */
   3
   4 double foo (double x)
   5 {
   6   double one = 1.;
   7   return __builtin_copysign (x, one);
   8 }
   9 double bar (double x)
  10 {
  11   double minuszero = -0.;
  12   return __builtin_copysign (x, minuszero);
  13 }
  14
  15 /* { dg-final { scan-tree-dump-times "= -" 1 "cddce1" } } */
  16 /* { dg-final { scan-tree-dump-times "= ABS_EXPR" 2 "cddce1" } } */