gcc/testsuite/gcc.dg/tree-ssa/pta-fp.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-alias" } */
   3 extern double cos (double);
   4 extern double sin (double);
   5 double f(double a)
   6 {
   7   double b;
   8   double c,d;
   9   double (*fp) (double);
  10   if (a < 2.0)
  11     {
  12       fp = sin;
  13       c = fp (a);
  14     }
  15   else
  16     {
  17       c = 1.0;
  18       fp = cos;
  19     }
  20   d = fp (a);
  21   return d + c;
  22 }
  23 /* The points-to set of the final function pointer should be "sin cos" */
  24
  25 /* { dg-final { scan-tree-dump-times "{ sin cos }" 1 "alias"} } */
  26 /* { dg-final { cleanup-tree-dump "alias" } } */