Messages in this thread | | | Date | Mon, 18 Feb 2008 18:40:27 -0800 | From | Arjan van de Ven <> | Subject | Re: [PATCH 1/3] Fix Unlikely(x) == y |
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On Tue, 19 Feb 2008 13:33:53 +1100 Nick Piggin <nickpiggin@yahoo.com.au> wrote: > > Actually one thing I don't like about gcc is that I think it still > emits cmovs for likely/unlikely branches, which is silly (the gcc > developers seem to be in love with that instruction). If that goes > away, then branch hints may be even better.
only for -Os and only if the result is smaller afaik. (cmov tends to be a performance loss most of the time so for -O2 and such it isn't used as far as I know.. it does make for nice small code however ;-)
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