moving constants out of loops

Richard Kenner kenner@vlsi1.ultra.nyu.edu
Tue Jun 30 16:25:00 GMT 1998


    Furthermore, we found that exposing more givs and invariants wasn't
    always a win.  In fact, it was a huge loss on the PA for a while (see
    alias discussion below).

My feeling is a bit different here.  There is currently code that attempts
to decide which givs are worth doing something about. I feel that the
more choice it has to pick from, the better job it wil do.  But that's
not relevant in this case, since what's being found aren't "givs",
but constants.



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