gcc/testsuite/gcc.dg/tree-ssa/loopclosedphi.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O3 -fno-tree-ch -fno-unswitch-loops -w -fdump-tree-loopdone-details" } */
   3
   4 void
   5 t6 (int qz, int wh)
   6 {
   7   int jl = wh;
   8
   9   while (1.0 * qz / wh < 1)
  10     {
  11       qz = wh * (wh + 2);
  12
  13       while (wh < 1)
  14         jl = 0;
  15     }
  16
  17   while (qz < 1)
  18     qz = jl * wh;
  19 }
  20
  21 /* { dg-final { scan-tree-dump-times "Replacing" 3 "loopdone"} } */