nak: Enable NIR fuse_ffmaN
This improves vkpeak perf by 40-50% on the Ada GPU in my laptop. There are probably more optimal things we can be doing (Intel's pass is pretty clever) but this is already an improvement.
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This improves vkpeak perf by 40-50% on the Ada GPU in my laptop. There are probably more optimal things we can be doing (Intel's pass is pretty clever) but this is already an improvement.