Mail Archives: djgpp/1998/08/26/10:00:35
vcarlos35 AT juno DOT com wrote:
> IIRC, Intel CPUs have special functionality for xoring a register with itself.
> It's something about avoiding a partial register stall after modifying the
> 32-bit extended register and than accessing the low-half of it using
> the complementary 16-bit register. Could someone correct me?
Never heard about, so it must be a post-Pentium feature. It could be
true what you say, but it possibly couldn't influence the results of
those instructions unless Intel would have really screwed up this one.
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