Hello all,
I was looking at the memory dependency prediction infrastructure of O3,
and I'm a bit puzzled by the fact that a store can be made dependent on
a store (see lines 203 to 256 in src/cpu/o3/mem_dep_unit_impl.hh).
Unless I'm mistaken, the SQ will take care of making stores to the same
location visible to other processors in order, and it will also take
care of forwarding/squashing when it is needed. Am I correct in assuming
that this simply creates false dependencies, or are there cases where
this is really required?
Cheers,
Arthur Perais.
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