arcv: use correct costs and latencies for the RMX-500 #191
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Signed-off-by: Michiel Derhaeg <michiel@synopsys.com>
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The tune_info struct was just copied from RHX-100. Not sure it was entirely right.
But the issue rate and branch cost were obviously wrong and updating them gave a modest improvement.
Updating the MPY latency gave us slightly better results than using the RHX-100 mtune.