[Bug tree-optimization/19098] tree-ssa-dom.c has an "if" statement whose condition is probably wrong

[kazu at cs dot umass dot edu]

------- Additional Comments From kazu at cs dot umass dot edu  2004-12-21 08:07 -------
Can we do something like the following?

Avoid creating multiple entries to into a loop before the loop optimizations run.
Try to thread every edge after the loop optimizations run.

The loop optimizers probably don't like irreducible loops,
but I guess the real CPU doesn't care about them, and
if we can skip some conditional jumps, that might be good.

I don't know if this idea is any good, but just a thought.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19098