pan/mdg: emit REGISTER_UNUSED on unused ALU src2
This saves power and time by skipping a roundtrip to the register file.
Signed-off-by: Italo Nicola italonicola@collabora.com
This saves power and time by skipping a roundtrip to the register file.
Signed-off-by: Italo Nicola italonicola@collabora.com