Disable TrivialLocalMemoryOpsElimination pass from the pipeline

The pass runs into multiple edge-case issues with aliased (and even direct) SLM
accesses. Originally implemented within commit ac8f9d5, no clear performance
benefit could be identified as of today.

Author: Artem Gindinson

IGC/Compiler/CISACodeGen/ShaderCodeGen.cpp

@@ -1852,7 +1852,6 @@ void OptimizeIR(CodeGenContext* const pContext)
             mpm.add(createSROAPass());
         }
 
-        mpm.add(new TrivialLocalMemoryOpsElimination());
         if (pContext->type == ShaderType::COMPUTE_SHADER &&
             (IGC_IS_FLAG_ENABLED(RemoveUnusedTGMFence) ||
                 pContext->getModuleMetaData()->enableRemoveUnusedTGMFence))

IGC/Compiler/CustomSafeOptPass.hpp

@@ -108,6 +108,7 @@ namespace IGC
         llvm::Value* analyzeTreeForTrunc64bto32b(const llvm::Use& OperandUse, llvm::SmallVector<llvm::BinaryOperator*, 8>& OpsToDelete);
     };
 
+    // TODO: Remove this pass as unused
     class TrivialLocalMemoryOpsElimination : public llvm::FunctionPass, public llvm::InstVisitor<TrivialLocalMemoryOpsElimination>
     {
     public: