[Autobackout][FuncReg]Revert of change: 86f42e2

 Check scratch usage kernel attribute to set scratch surface
offset

Check scratch usage kernel attribute to set scratch surface offset

visa/FlowGraph.cpp

@@ -633,10 +633,8 @@ void FlowGraph::constructFlowGraph(INST_LIST &instlist) {
   //vISA_ASSERT(!instlist.empty(), ERROR_SYNTAX("empty instruction list"));
   setCurrentDebugPass("CFG");
   VISA_DEBUG(std::cout << "Entering CFG construction\n");
-  bool scratchUse = (
-    getKernel()->getKernelAttrs()->getInt32KernelAttr(Attributes::ATTR_SpillMemOffset) > 0);
-  // Why should we and with (isStackCallFunc || hasStackCalls)?
-  if (builder->hasScratchSurface() && (isStackCallFunc || hasStackCalls || scratchUse)) {
+
+  if (builder->hasScratchSurface() && (isStackCallFunc || hasStackCalls)) {
     // unfortunately we can't put this in stack call prolog since this has to be
     // done before RA ToDo: just hard-wire the scratch-surface offset register?
     builder->initScratchSurfaceOffset();