Re: redundant part in lowering-to-cg

[mpm@xxxxxxxxxxxxxxxxx (Michael Murphy)]

        From: "Tuo, Tony" <tony.tuo@xxxxxxxxx>
        
        There is redundant code introduced in lowering-to-cg phase in some 
cases. The redundant part is marked in the end with string ">>>>>>". But this 
seems to be eliminated in the later phases.
        
Although you could call this redundant, it is not a problem.
What happens is that first we have parameter expressions under a call,
e.g.
          <load argument>
         U4PARM
        CALL
then when we lower we create stores of the arguments to the actual
registers, e.g.
         <load argument>
        STID $r4
but the CALL PARM still exists.  So it is a copy of the <load argument>,
but that's okay.
-- Mike Murphy
-- mpm@xxxxxxx
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