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Re: A latent bug - use of BRANCH_EDGE on trees.


I was just scratching my head for the same reason.  If I change
BRANCH_EDGE, I would have to change FALLTHRU_EDGE to be complete.  But
then tree dump would look confusing; when the true arm appears to
falls through in tree dump, we don't have EDGE_FALLTHRU_FLAG.

Let's go with Zdenek's first suggestion.

  Let the caller pass the edge corresponding to the current
  BRANCH_EDGE (switch_bb) to loopify

By the way, tree_ssa_loop_version uses FALLTHRU_EDGE, so I guess I
have to fix that.

[ I was on vacation. ]

Yes. It uses FALLTRHU_EDGE to update pending statements.

-
Devang

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