是不是警告可以不理的?[求助] 警告, 求助

warmth

WARNING:Xst:647 - Input is never used.
WARNING:Xst:737 - Found 1-bit latch for signal .
WARNING:Xst:737 - Found 1-bit latch for signal .
WARNING:Xst:737 - Found 1-bit latch for signal .
WARNING:Xst:737 - Found 1-bit latch for signal .
WARNING:Xst:737 - Found 1-bit latch for signal .
WARNING:Xst:737 - Found 4-bit latch for signal .
WARNING:Xst:1710 - FF/Latch (without init value) has a constant value of 0 in block .
WARNING:Xst:2170 - Unit qdq : the following signal(s) form a combinatorial loop: _n0052, _n0034, a<4>, _n0032, _n0009, scade<0>, a<0>, _n0024, _n0010, _n0015.
这些警告是什么意思,可不可以不理它?

谢谢！

xlnxfpga

建议各个警告都留意看看，多数不会影响设计的功能的，但是还是得小心。