[Bug tree-optimization/20514] hoisting of label out of jumptable would take place at cse, should happen at trees

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=20514

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #2)
> Two things, we just don't jump thread.

The testcase in comment #2 works correctly on the trunk:
  <bb 2> [15.0%]:
  i_lsm.3_8 = i;
  switch (i_lsm.3_8) <default: <L13> [15.0%], case 5: <L10> [85.0%]>

<L10> [85.0%]:
  i = 4;

<L13> [15.0%]:
  return 0;


That is no loop.