On Wed, Sep 15, 2010 at 8:44 AM, Jack Lloyd <ll...@randombit.net> wrote:
> Also keep in mind the PPU is only double issue, while something like > an i7 can issue 3 integer instructions plus a couple loads/stores per > cycle. And the branch predictor is much weaker on the PPU than most > modern processors. Hz isn't everything... Well the branch predictor is actually like most on PowerPCs. Though if GCC predicts the branch as almost always being taken, GCC will emit the correct bits on the branch such that the hardware predicted is not used and the one on the instruction is used; not using a space in the local/global predictors. -- Pinski _______________________________________________ Gcc-cfarm-users mailing list Gcc-cfarm-users@gna.org https://mail.gna.org/listinfo/gcc-cfarm-users
