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Re: Code enlargement
- To: gcc at gcc dot gnu dot org, pfk at fuchs dot offl dot uni-jena dot de
- Subject: Re: Code enlargement
- From: dewar at gnat dot com
- Date: Sat, 1 Sep 2001 12:06:42 -0400 (EDT)
<< - avoid this trick with '-Os', may be also with '-O2', because speed
increase is very little, zero or below zero. Brnach prediction
seems to work very well.
Branch prediction is not much use for forward jumps not in a loop, so I don't
understand your statement here. Certainly the rearrangement of jumps that
GCC 3 does is in some cases a big win, so this needs careful analysis.