How to define the attribute in synplify !

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dolby.yang

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synplify define

How to define the attribute that keep the synplify change the signal name when it do synthesis? syn_keep and syn_preserve seams have no this funciton ?

thanks !
 

synplify syn_keep

who can support this issue ?
 

synthesis syn_keep=1

Try putting (* syn_keep *) before the definition of the signal

i.e.
Code: 
(* syn_keep *)   wire            wire_i_want_to_keep;

r.b.
 

synplify synkeep

Thanks your reply, i have put the syn_keep after the signal define,this attribution seams no any use for this issue .

wire wire_i_want to keep /*sythesis syn_keep =1 */;
 

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