Add prefetch before variance calculation
This improved encoding performance by 0.5% (good, speed 1) to 1.5% (good, speed 5). Change-Id: I843d72a0d68a90b5f694adf770943e4a4618f50e
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This improved encoding performance by 0.5% (good, speed 1) to 1.5% (good, speed 5). Change-Id: I843d72a0d68a90b5f694adf770943e4a4618f50e