Messages in this thread | | | Subject | Re: get_current is __pure__, maybe __const__ even | From | Andi Kleen <> | Date | Thu, 16 Sep 2004 08:58:22 +0200 |
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Albert Cahalan <albert@users.sf.net> writes:
> Andi Kleen writes: > >> Please CSE "current" manually. It generates >> much better code on some architectures >> because the compiler cannot do it for you. > > This looks fixable.
I tried it some years ago, but I ran into problems with the scheduler and some other code and dropped it.
One problem is that gcc doesn't have a "drop all const/pure cache values" barrier. Without this I don't think it can be safely implemented.
-Andi
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