Changes in code.

Author: ksliwins

IGC/Compiler/CISACodeGen/PullConstantHeuristics.hpp

@@ -45,6 +45,11 @@ class PullConstantHeuristics : public llvm::ModulePass {
     }
 
     DWORD pushConstantGRFThreshold = IGC_GET_FLAG_VALUE(BlockPushConstantGRFThreshold);
+    CompOptions compOpt;
+    // If the regkey is set (pushConstantGRFThreshold != 0xFFFFFFFF) then we should use the regkey value, use the compOptions otherwise
+    if ((pushConstantGRFThreshold == 0xFFFFFFFF) && (compOpt.PushConstantGRFThreshold != UINT32_MAX)) {
+      pushConstantGRFThreshold = compOpt.PushConstantGRFThreshold;
+    }
     if (pushConstantGRFThreshold != 0xFFFFFFFF) {
       return pushConstantGRFThreshold * ctx->platform.getGRFSize() /
              (ctx->platform.getMinPushConstantBufferAlignment() * sizeof(DWORD));

IGC/common/MDFrameWork.h

@@ -424,6 +424,7 @@ enum class ShaderTypeMD
         unsigned VISAPreSchedRPThreshold                = 0;
         unsigned VISAPreSchedCtrl                       = 0;
         unsigned SetLoopUnrollThreshold                 = 0;
+        unsigned PushConstantGRFThreshold               = UINT32_MAX;
         bool UnsafeMathOptimizations                    = false;
         bool disableCustomUnsafeOpts                    = false;
         bool disableReducePow                           = false;