在ISE综合时出现如下警告信息，请问是否有大侠遇到过？
如何解决？
Optimizing unit <flashRead_tb> ...
INFO:Xst:2261 - The FF/Latch <Inst_flashRead/Mtridata_addr_7> in Unit <flashRead_tb> is equivalent to the following 11 FFs/Latches, which will be removed : <Inst_flashRead/Mtridata_addr_8> <Inst_flashRead/Mtridata_addr_9> <Inst_flashRead/Mtridata_addr_10> <Inst_flashRead/Mtridata_addr_11> <Inst_flashRead/Mtridata_addr_12> <Inst_flashRead/Mtridata_addr_13> <Inst_flashRead/Mtridata_addr_14> <Inst_flashRead/Mtridata_addr_15> <Inst_flashRead/Mtridata_addr_16> <Inst_flashRead/Mtridata_addr_18> <Inst_flashRead/Mtridata_addr_20>
WARNING:Xst:638 - in unit flashRead_tb Conflict on KEEP property on signal Inst_flashRead/Mtridata_addr<7> and Inst_flashRead/Mtridata_addr<8> Inst_flashRead/Mtridata_addr<8> signal will be lost.
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