[Autobackout][FuncReg]Revert of change: 4d98cad

Add comments to spill/fill when not using stack calls.

Author: pratikashar

visa/SpillManagerGMRF.cpp

@@ -4416,10 +4416,6 @@ void GlobalRA::expandSpillNonStackcall(
                 inst->getDst(), headerOpnd, payloadToUse, msgDescImm,
                 inst->getOption(), msgDesc, extDesc);
 
-            std::stringstream comments;
-            comments << "scratch space spill: " << payloadToUse->getTopDcl()->getName() << " from offset[" << offset << "x32]";
-            sendInst->setComments(comments.str());
-
             instIt = bb->insertBefore(instIt, sendInst);
 
             numRows -= getPayloadSizeGRF(numRows);
@@ -4605,10 +4601,6 @@ void GlobalRA::expandSpillIntrinsic(G4_BB* bb)
                  G4_send, g4::SIMD16, fillDst, headerOpnd, msgDescImm, inst->getOption(),
                  msgDesc);
 
-             std::stringstream comments;
-             comments << "scratch space fill: " << inst->getDst()->getTopDcl()->getName() << " from offset[" << offset << "x32]";
-             sendInst->setComments(comments.str());
-
              instIt = bb->insertBefore(instIt, sendInst);
 
              numRows -= getPayloadSizeGRF(numRows);