Remove getref/setref functions

- setref is not used anywhere in the codebase
- getref is used only in one place but it's redundant in this case

Author: mateuszchudyk

IGC/Compiler/CustomSafeOptPass.cpp

@@ -63,7 +63,6 @@ cmp+sel to avoid expensive VxH mov.
 #include "common/IGCConstantFolder.h"
 #include "common/LLVMWarningsPush.hpp"
 #include "llvm/Config/llvm-config.h"
-#include "WrapperLLVM/Utils.h"
 #include "llvmWrapper/IR/IntrinsicInst.h"
 #include <llvmWrapper/IR/DIBuilder.h>
 #include <llvmWrapper/IR/DerivedTypes.h>

IGC/Compiler/GenTTI.cpp

@@ -15,7 +15,6 @@ SPDX-License-Identifier: MIT
 
 #include "common/LLVMWarningsPush.hpp"
 #include "llvm/Config/llvm-config.h"
-#include "WrapperLLVM/Utils.h"
 
 #include "llvm/Analysis/CodeMetrics.h"
 #include "llvm/Analysis/LoopInfo.h"
@@ -304,7 +303,7 @@ namespace llvm {
         if (!ExitingBlock || !L->isLoopExiting(ExitingBlock))
             ExitingBlock = L->getExitingBlock();
         if (ExitingBlock)
-            TripCount = IGCLLVM::getref(SE).getSmallConstantTripCount(L, ExitingBlock);
+            TripCount = SE.getSmallConstantTripCount(L, ExitingBlock);
 
         // Do not enable partial unrolling if the loop counter is float. It can cause precision issue.
         if (ExitingBlock) {

IGC/WrapperLLVM/CMakeLists.txt

@@ -10,8 +10,6 @@ set(IGC_BUILD__PROJ__WrapperLLVM       "${IGC_BUILD__PROJ_NAME_PREFIX}WrapperLLV
 set(IGC_BUILD__PROJ__WrapperLLVM       "${IGC_BUILD__PROJ__WrapperLLVM}" PARENT_SCOPE)
 
 set(IGC_WrapperLLVM_HDR
-    "${CMAKE_CURRENT_SOURCE_DIR}/Utils.h"
-
     "${CMAKE_CURRENT_SOURCE_DIR}/include/llvmWrapper/ADT/APInt.h"
     "${CMAKE_CURRENT_SOURCE_DIR}/include/llvmWrapper/ADT/Optional.h"
     "${CMAKE_CURRENT_SOURCE_DIR}/include/llvmWrapper/ADT/STLExtras.h"