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Re: moving constants out of loops
- To: Haj dot Ten dot Brugge at net dot hcc dot nl, law at cygnus dot com
- Subject: Re: moving constants out of loops
- From: kenner at vlsi1 dot ultra dot nyu dot edu (Richard Kenner)
- Date: Tue, 30 Jun 98 19:27:59 EDT
- Cc: egcs-patches at cygnus dot com, gcc-patches at gnu dot org
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.