Linearize COND_EXPRs involving a single SSA_NAME

[Richard Henderson]

On Mon, Jul 12, 2004 at 06:27:41PM -0400, Diego Novillo wrote:
> Again.  fold_stmt() has the same problem.  We don't call it when we copy
> propagate.  Perhaps we should, but this is somewhat specialized to
> control flow linearization.

Well, *definitely* do not replicate the logic to do the actual
folding.  At minimum do

  if (TREE_CODE_CLASS (TREE_CODE (cond)) == 'r'
      && TREE_OPERAND (cond, 0) == TREE_OPERAND (cond, 1))
    cond = fold (cond);

at the place you're tweaking things now.


r~