[Autobackout][FunctionalRegression]Revert of change: f17af66: indirect send update

indirect send update

Author: sys-igc

visa/Optimizer.cpp

@@ -828,6 +828,11 @@ void Optimizer::s0SubAfterRA() {
     return;
   }
 
+  // for 512 GRF mode, indirect-send is forbidden
+  if (builder.kernel.getNumRegTotal() == 512) {
+    return;
+  }
+
   kernel.fg.resetLocalDataFlowData();
   kernel.fg.localDataFlowAnalysis();