Relax condition for spill threshol

Author: jfuentes

visa/G4_Kernel.cpp

@@ -2253,10 +2253,10 @@ bool GRFMode::hasSmallerGRFSameThreads() const {
 unsigned GRFMode::getSpillThreshold() const {
   if (platform < Xe3)
     return 0;
-  // FIXME: currently spill thresholds for <128GRF are
+  // FIXME: currently spill thresholds for <96GRF are
   // causing some performance regressions. We need more
   // study to define proper thresholds for this range.
-  if (configs[currentMode].numGRF < 128)
+  if (configs[currentMode].numGRF < 96)
     return 0;
   if (configs[currentMode].numGRF == 256 &&
       options->getuInt32Option(vISA_SpillAllowed256GRF) > 0)