Disable lsc sampler routing for OCL

Disable lsc sampler routing for ocl due to new regression found.

Author: ichenkai

IGC/AdaptorOCL/DriverInfoOCL.hpp

@@ -67,6 +67,8 @@ namespace TC
         bool RespectPerInstructionContractFlag() const override { return true; }
 
         bool EnableLSCForLdRawAndStoreRawOnDG2() const override { return true; }
+
+        bool supportLscSamplerRouting() const override { return false; }
     };
 
     // In case some cpas are specific to NEO

IGC/Compiler/CISACodeGen/DriverInfo.hpp

@@ -386,6 +386,7 @@ namespace IGC
         virtual unsigned getCSSIMD16_SpillThreshold() const { return IGC_GET_FLAG_VALUE(CSSIMD16_SpillThreshold); }
         virtual unsigned getCSSIMD32_SpillThreshold() const { return IGC_GET_FLAG_VALUE(CSSIMD32_SpillThreshold); }
 
+        virtual bool supportLscSamplerRouting() const { return true; }
         virtual bool supportBarrierControlFlowOptimization() const { return false; }
         virtual bool getLscStoresWithNonDefaultL1CacheControls() const { return true; }
 

IGC/Compiler/SamplerPerfOptPass.cpp

@@ -404,6 +404,7 @@ bool SamplerPerfOptPass::runOnFunction(Function& F)
                     // DisableLscSamplerRouting is from UMD AIL to turn off per shader
                     if (ctx->platform.hasLSCSamplerRouting() &&
                         IGC_IS_FLAG_ENABLED(EnableLscSamplerRouting) &&
+                        ctx->m_DriverInfo.supportLscSamplerRouting() &&
                         !ctx->getModuleMetaData()->compOpt.DisableLscSamplerRouting &&
                         loadInst->getIntrinsicID() == GenISAIntrinsic::GenISA_ldptr)
                     {