Article: Escape From the Planet of x86
By: Paul DeMone (pdemone.delete@this.igs.net), June 22, 2003 3:22 pm
Room: Moderated Discussions
David Kanter (dkanter@realworldtech.com) on 6/21/03 wrote:
---------------------------
>Actually, interestingly enough, PGO probably doesn't help SPEC FP.
PGO helps most with unpredictable and hard to predict control flow.
In most FP intensive code the flow control is very predictable because it
is very loop intensive. Furthermore, IPF has special architecural features
to eliminate the termination mispredict of defined iteration loops.
---------------------------
>Actually, interestingly enough, PGO probably doesn't help SPEC FP.
PGO helps most with unpredictable and hard to predict control flow.
In most FP intensive code the flow control is very predictable because it
is very loop intensive. Furthermore, IPF has special architecural features
to eliminate the termination mispredict of defined iteration loops.
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