posting the synthesis report

some of the warning messages i am posting to you As i am not able to understand please help me to understand these messages.

Optimizing unit <polyphase2> ...
WARNING:Xst:1710 - FF/Latch <Inst_upsample1/IMAP_UP_0> (without init value) has a constant value of 0 in block <iqmap1>.
WARNING:Xst:1710 - FF/Latch <Inst_upsample1/QMAP_UP_0> (without init value) has a constant value of 0 in block <iqmap1>.
WARNING:Xst:1896 - Due to other FF/Latch trimming, FF/Latch <filtering/subfilt03/MCM04_3> has a constant value of 0 in block <iqmap1>.
WARNING:Xst:1896 - Due to other FF/Latch trimming, FF/Latch <filtering/subfilt01/dff1/qt1_0> has a constant value of 0 in block <iqmap1>.
WARNING:Xst:1896 - Due to other FF/Latch trimming, FF/Latch <filtering1/subfilt03/MCM04_3> has a constant value of 0 in block <iqmap1>.
WARNING:Xst:1896 - Due to other FF/Latch trimming, FF/Latch <filtering1/subfilt01/dff1/qt1_0> has a constant value of 0 in block <iqmap1>.
WARNING:Xst:1896 - Due to other FF/Latch trimming, FF/Latch <filtering/subfilt030/MCM59_5> has a constant value of 0 in block <iqmap1>.
WARNING:Xst:1896 - Due to other FF/Latch trimming, FF/Latch <filtering1/subfilt030/MCM59_5> has a constant value of 0 in block <iqmap1>.

Mapping all equations...
Building and optimizing final netlist ...
INFO:Xst:2261 - The FF/Latch <filtering1/qfiltout_27> in Unit <iqmap1> is equivalent to the following 4 FFs/Latches, which will be removed : <filtering1/qfiltout_26> <filtering1/qfiltout_25> <filtering1/qfiltout_24> <filtering1/qfiltout_23>
INFO:Xst:2261 - The FF/Latch <Inst_upsample1/IMAP_UP_7> in Unit <iqmap1> is equivalent to the following 2 FFs/Latches, which will be removed : <Inst_upsample1/IMAP_UP_5> <Inst_upsample1/IMAP_UP_2>
INFO:Xst:2261 - The FF/Latch <filtering/ifiltout_27> in Unit <iqmap1> is equivalent to the following 4 FFs/Latches, which will be removed : <filtering/ifiltout_26> <filtering/ifiltout_25> <filtering/ifiltout_24> <filtering/ifiltout_23>
INFO:Xst:2261 - The FF/Latch <Inst_upsample1/IMAP_UP_1> in Unit <iqmap1> is equivalent to the following FF/Latch, which will be removed : <Inst_upsample1/QMAP_UP_1>
INFO:Xst:2261 - The FF/Latch <Inst_upsample1/IMAP_UP_6> in Unit <iqmap1> is equivalent to the following 2 FFs/Latches, which will be removed : <Inst_upsample1/IMAP_UP_4> <Inst_upsample1/IMAP_UP_3>
INFO:Xst:2261 - The FF/Latch <Inst_upsample1/QMAP_UP_6> in Unit <iqmap1> is equivalent to the following 2 FFs/Latches, which will be removed : <Inst_upsample1/QMAP_UP_4> <Inst_upsample1/QMAP_UP_3>
INFO:Xst:2261 - The FF/Latch <Inst_upsample1/QMAP_UP_7> in Unit <iqmap1> is equivalent to the following 2 FFs/Latches, which will be removed : <Inst_upsample1/QMAP_UP_5> <Inst_upsample1/QMAP_UP_2>
INFO:Xst:2261 - The FF/Latch <filtering/subfilt03/MCM04_6> in Unit <iqmap1> is equivalent to the following 2 FFs/Latches, which will be removed : <filtering/subfilt03/MCM04_7> <filtering/subfilt03/MCM04_9>
INFO:Xst:2261 - The FF/Latch <filtering/subfilt03/MCM04_5> in Unit <iqmap1> is equivalent to the following 2 FFs/Latches, which will be removed : <filtering/subfilt03/MCM04_8> <filtering/subfilt03/MCM04_10>
INFO:Xst:2261 - The FF/Latch <filtering1/subfilt03/MCM04_5> in Unit <iqmap1> is equivalent to the following 2 FFs/Latches, which will be removed : <filtering1/subfilt03/MCM04_8> <filtering1/subfilt03/MCM04_10>
INFO:Xst:2261 - The FF/Latch <filtering/subfilt01/dff1/qt1_6> in Unit <iqmap1> is equivalent to the following 2 FFs/Latches, which will be removed : <filtering/subfilt01/dff1/qt1_4> <filtering/subfilt01/dff1/qt1_3>
INFO:Xst:2261 - The FF/Latch <filtering/subfilt03/MCM04_4> in Unit <iqmap1> is equivalent to the following FF/Latch, which will be removed : <filtering1/subfilt03/MCM04_4>
INFO:Xst:2261 - The FF/Latch <filtering/subfilt01/dff1/qt1_7> in Unit <iqmap1> is equivalent to the following 2 FFs/Latches, which will be removed : <filtering/subfilt01/dff1/qt1_5> <filtering/subfilt01/dff1/qt1_2>
INFO:Xst:2261 - The FF/Latch <filtering1/subfilt01/dff1/qt1_7> in Unit <iqmap1> is equivalent to the following 2 FFs/Latches, which will be removed : <filtering1/subfilt01/dff1/qt1_5> <filtering1/subfilt01/dff1/qt1_2>
INFO:Xst:2261 - The FF/Latch <filtering1/subfilt03/MCM04_6> in Unit <iqmap1> is equivalent to the following 2 FFs/Latches, which will be removed : <filtering1/subfilt03/MCM04_7> <filtering1/subfilt03/MCM04_9>
INFO:Xst:2261 - The FF/Latch <filtering/subfilt01/dff1/qt1_1> in Unit <iqmap1> is equivalent to the following FF/Latch, which will be removed : <filtering1/subfilt01/dff1/qt1_1>
INFO:Xst:2261 - The FF/Latch <filtering1/subfilt01/dff1/qt1_6> in Unit <iqmap1> is equivalent to the following 2 FFs/Latches, which will be removed : <filtering1/subfilt01/dff1/qt1_4> <filtering1/subfilt01/dff1/qt1_3>
INFO:Xst:2261 - The FF/Latch <filtering/subfilt030/MCM59_6> in Unit <iqmap1> is equivalent to the following FF/Latch, which will be removed : <filtering1/subfilt030/MCM59_6>
INFO:Xst:2261 - The FF/Latch <filtering/subfilt030/MCM59_7> in Unit <iqmap1> is equivalent to the following 2 FFs/Latches, which will be removed : <filtering/subfilt030/MCM59_10> <filtering/subfilt030/MCM59_12>
INFO:Xst:2261 - The FF/Latch <filtering1/subfilt030/MCM59_8> in Unit <iqmap1> is equivalent to the following 2 FFs/Latches, which will be removed : <filtering1/subfilt030/MCM59_9> <filtering1/subfilt030/MCM59_11>
INFO:Xst:2261 - The FF/Latch <filtering1/subfilt030/MCM59_7> in Unit <iqmap1> is equivalent to the following 2 FFs/Latches, which will be removed : <filtering1/subfilt030/MCM59_10> <filtering1/subfilt030/MCM59_12>
INFO:Xst:2261 - The FF/Latch <filtering/subfilt030/MCM59_8> in Unit <iqmap1> is equivalent to the following 2 FFs/Latches, which will be removed : <filtering/subfilt030/MCM59_9> <filtering/subfilt030/MCM59_11>


From these messages can you please tell me whether it is a coding problem if it is give some suggestions.

I thought they were pretty self explanitory. Some signals are stuck at 0, so its removing a load of registers. It will be a coding issue.

TrickyDicky said:

I thought they were pretty self explanitory. Some signals are stuck at 0, so its removing a load of registers. It will be a coding issue.

Click to expand...

If it is a coding issue can you please give some suggestions .Whether there has to be any major change to be made in the code.