5153d06d92
This involves indexing the ACP tables used internally by fs_copy_prop_dataflow::setup_initial_values() by reg_space() instead of register number. Both are nearly equivalent for virtual GRFs (barring the single bit of entropy lost in the hash), and this makes handling FIXED_GRFs straightforward. Because we're only going to support FIXED_GRFs for the source of a copy, this change is only strictly necessary during the second pass that checks for source interference, but we also apply the same change to the first pass for consistency. Note that this shouldn't change the behavior of the copy propagation pass until we start inserting FIXED_GRF entries into the ACP. Even then FIXED_GRF writes are extremely rare so this change will hardly ever have an effect, but they aren't completely non-existing so we need to handle them for correctness. No functional nor shader-db changes. Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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