Remove sharing builtin vars for code patching

Separate builtin vars, like Builtin_R0, R1 between shader body
and payload section. Each section will generate its own builtin vars

Author: houjenko

visa/BuildCISAIRImpl.cpp

@@ -1689,12 +1689,6 @@ int CISA_IR_Builder::Compile(const char *isaasmFileName, bool emit_visa_only) {
         // Copy main kernel's declarations (shader body) into payload section
         kernel->CopyVars(mainKernel);
         kernel->getKernel()->Declares = mainKernel->getKernel()->Declares;
-        kernel->getIRBuilder()->setInputR1(
-            mainKernel->getIRBuilder()->getInputR1());
-        kernel->getIRBuilder()->setRealR0(
-            mainKernel->getIRBuilder()->getRealR0());
-        kernel->getIRBuilder()->setBuiltInR0(
-            mainKernel->getIRBuilder()->getBuiltinR0());
         // Set payload LiveOuts to be output
         uint32_t inputCount = mainKernel->getIRBuilder()->getInputCount();
         for (unsigned int id = 0; id < inputCount; id++) {

visa/BuildIR.h

@@ -718,11 +718,9 @@ class IR_Builder {
   }
 
   G4_Declare *getBuiltinR0() { return builtinR0; }
-  void setBuiltInR0(G4_Declare *dcl) { builtinR0 = dcl; }
   G4_Declare *getRealR0() const {
     return realR0;
   } // undefined terminology: what's "real" here (vs "builtin" above)?
-  void setRealR0(G4_Declare *dcl) { realR0 = dcl; }
   G4_Declare *getBuiltinA0() { return builtinA0; }
   G4_Declare *getBuiltinA0Dot2() { return builtinA0Dot2; }
   G4_Declare *getBuiltinHWTID() const { return builtinHWTID; }

visa/BuildIRImpl.cpp

@@ -750,8 +750,7 @@ IR_Builder::IR_Builder(INST_LIST_NODE_ALLOCATOR &alloc, G4_Kernel &k,
       debugNameMem(4096), r0AccessMode(getR0AccessFromOptions()) {
   num_temp_dcl = 0;
   kernel.setBuilder(this); // kernel needs pointer to the builder
-  if (!getIsPayload())
-    createBuiltinDecls();
+  createBuiltinDecls();
 
   sampler8x8_group_id = 0;