Minor refactor to internal IR debug dumps.

Change-Id: If4301c6cefd142d361a5c8b3597c7601b7185e40

Author: weiyu-chen

visa/BuildCISAIRImpl.cpp

@@ -536,6 +536,7 @@ static void Stitch_Compiled_Units(G4_Kernel* mainFunc, std::map<std::string, G4_
             mainFunc->Declares.push_back(curDcl);
         }
     }
+    mainFunc->dumpDotFile("stitched");
 }
 
 

visa/FlowGraph.cpp

@@ -794,7 +794,7 @@ void FlowGraph::constructFlowGraph(INST_LIST& instlist)
 
     if (builder->getOption(vISA_DumpDotAll))
     {
-        pKernel->dumpDotFile("beforeRemoveRedundantLabels");
+        pKernel->dumpDotFile("afterCFGConstruction");
     }
 
     removeRedundantLabels();
@@ -833,10 +833,6 @@ void FlowGraph::constructFlowGraph(INST_LIST& instlist)
         mergeFReturns();
     }
 
-    if (builder->getOption(vISA_DumpDotAll))
-    {
-        pKernel->dumpDotFile("beforeRemoveUnreachableBlocks");
-    }
     removeUnreachableBlocks();
 
     if (builder->getOption(vISA_DumpDotAll))
@@ -864,11 +860,6 @@ void FlowGraph::constructFlowGraph(INST_LIST& instlist)
         if (builder->getOption(vISA_EnableStructurizer) &&
             !endWithGotoInLastBB())
         {
-            if (builder->getOption(vISA_DumpDotAll))
-            {
-                pKernel->dumpDotFile("before_doCFGStructurizer");
-            }
-
             doCFGStructurize(this);
 
             if (builder->getOption(vISA_DumpDotAll))
@@ -878,10 +869,6 @@ void FlowGraph::constructFlowGraph(INST_LIST& instlist)
         }
         else
         {
-            if (builder->getOption(vISA_DumpDotAll))
-            {
-                pKernel->dumpDotFile("beforeProcessGoto");
-            }
             processGoto(hasSIMDCF);
             if (builder->getOption(vISA_DumpDotAll))
             {

visa/Optimizer.cpp

@@ -461,9 +461,6 @@ void Optimizer::runPass(PassIndex Index)
 
     std::string Name = PI.Name;
 
-    if (builder.getOption(vISA_DumpDotAll))
-        kernel.dumpDotFile(("before." + Name).c_str());
-
     if (PI.Timer != TIMER_NUM_TIMERS)
         startTimer(PI.Timer);
 

visa/Rematerialization.cpp

@@ -1032,13 +1032,6 @@ namespace vISA
 
     void Rematerialization::run()
     {
-        //unsigned int before = getNumSamplers(kernel);
-
-        if (kernel.fg.builder->getOption(vISA_DumpDotAll))
-        {
-            kernel.dumpDotFile("before.remat");
-        }
-
         populateRefs();
 
         auto firstProgInst = kernel.fg.getEntryBB()->getFirstInst();