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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 ;-) -- If you want to reach me at my work email, use arjan@linux.intel.com For development, discussion and tips for power savings, visit http://www.lesswatts.org | ||||||||||||
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