Juha-Pekka Heikkila <juhapekka.heikk...@gmail.com> writes: > These patches allow MAD opcode to be used with pre gen6 hardware. > Instead of failing on emitting MAD there will be emitted MUL and ADD > to simulate MAD. > > I tried this with piglit on ILK (gen5) and did not see regression.
This hides the MUL and ADD from instruction scheduling, which I expect to make performance worse. What was the motivation for this?
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