i965/fs: Remove incorrect note of writing attr in centroid workaround.
This instruction doesn't update its IR destination, it just moves from payload to f0. This caused the dead code elimination pass I'm adding to dead-code-eliminate the first step of interpolation. Reviewed-by: Matt Turner <mattst88@gmail.com>
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@ -1064,7 +1064,7 @@ fs_visitor::emit_general_interpolation(ir_variable *ir)
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* unlit, replace the centroid data with non-centroid
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* data.
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*/
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emit(FS_OPCODE_MOV_DISPATCH_TO_FLAGS, attr);
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emit(FS_OPCODE_MOV_DISPATCH_TO_FLAGS);
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fs_inst *inst = emit_linterp(attr, fs_reg(interp),
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interpolation_mode, false);
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inst->predicate = BRW_PREDICATE_NORMAL;
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