[Autobackout][FuncReg]Revert of change: c1d99d1

Removing unecessary code

Change-Id: Ie7e643d520c334be58fa6875f8a838cc0aa83e2c

Author: jsantillan2017

IGC/Compiler/CISACodeGen/VertexShaderCodeGen.cpp

@@ -192,6 +192,8 @@ namespace IGC
         pKernelProgram->isMessageTargetDataCacheDataPort = isMessageTargetDataCacheDataPort;
         pKernelProgram->singleInstanceVertexShader =
             ((entry->getParent())->getNamedMetadata("ConstantBufferIndexedWithInstanceId") != nullptr) ? true : false;
+        pKernelProgram->EnableVertexReordering =
+            (GetContext()->getModuleMetaData()->vsInfo.DrawIndirectBufferIndex != -1);
 
         CreateGatherMap();
         CreateConstantBufferOutput(pKernelProgram);

IGC/Compiler/CodeGenPublic.h

@@ -383,7 +383,7 @@ namespace IGC
 
         DWORD        m_AccessedBySampleC[4];
         bool         HasClipCullAsOutput;
-
+        bool         EnableVertexReordering;
 
         unsigned int BindingTableEntryBitmap;
         unsigned int m_SamplerCount;

IGC/common/MDFrameWork.h

@@ -230,6 +230,10 @@ namespace IGC
         bool forcedVISAPreRAScheduler = false;
     };
 
+    struct VertexShaderInfo
+    {
+        int DrawIndirectBufferIndex = -1;
+    };
 
     struct PixelShaderInfo
     {
@@ -338,6 +342,7 @@ namespace IGC
         CompOptions compOpt;
         std::map<llvm::Function*, IGC::FunctionMetaData>   FuncMD;
         PushInfo pushInfo;
+        VertexShaderInfo vsInfo;
         PixelShaderInfo psInfo;
         ComputeShaderInfo csInfo;
         std::map<ConstantAddress, uint32_t>   inlineDynConstants;