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/*========================== begin_copyright_notice ============================
Copyright (C) 2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
/**
* @file getCacheOpts.h
*
* @section DESCRIPTION
*
* This file contains declarations of utility functions which return the cache options
* for a given load or store instruction.
*/
#pragma once
#include "visa_igc_common_header.h" // for LSC_L1_L3_CC
#include "common/LLVMWarningsPush.hpp" // for suppressing LLVM warnings
#include <optional> // for Optional
#include "llvm/IR/Instructions.h" // for llvm::StoreInst, llvm::LoadInst
#include "common/LLVMWarningsPop.hpp" // for suppressing LLVM warnings
#include "Compiler/CodeGenPublic.h"
namespace IGC {
/**
* @param Ptr Pointer to memory
* @param Ctx Context
*
* @return Optional containing the cache options for that particular store instruction
* if the RTRegion is RTAsynctack, SWStack, SWHotZone, RTSynctack
* or empty Optional if the RTRegion cannot be known, or if it is a RTGlobals or LocalArgs
*/
std::optional<LSC_L1_L3_CC> getCacheOptsStorePolicy(const llvm::Value *Ptr, const CodeGenContext &Ctx);
/**
* @param storeInst LLVM IR store instruction
* @param Ctx Context
*
* @return Optional containing the cache options for that particular store instruction
* if the RTRegion is RTAsynctack, SWStack, SWHotZone, RTSynctack
* or empty Optional if the RTRegion cannot be known, or if it is a RTGlobals or LocalArgs
*/
std::optional<LSC_L1_L3_CC> getCacheOptsStorePolicy(const llvm::StoreInst &storeInst, const CodeGenContext &Ctx);
/**
* @param Ptr Pointer to memory
* @param Ctx Context
*
* @return Optional containing the cache options for that particular load instruction
* if the RTRegion is RTAsynctack, SWStack, SWHotZone, RTSynctack
* or empty Optional if the RTRegion cannot be known, or if it is a RTGlobals or LocalArgs
*/
std::optional<LSC_L1_L3_CC> getCacheOptsLoadPolicy(const llvm::Value *Ptr, const CodeGenContext &Ctx);
/**
* @param loadInst LLVM IR load instruction
* @param Ctx Context
*
* @return Optional containing the cache options for that particular load instruction
* if the RTRegion is RTAsynctack, SWStack, SWHotZone, RTSynctack
* or empty Optional if the RTRegion cannot be known, or if it is a RTGlobals or LocalArgs
*/
std::optional<LSC_L1_L3_CC> getCacheOptsLoadPolicy(const llvm::LoadInst &loadInst, const CodeGenContext &Ctx);
/**
* @return the store cache policy for the RTStack
*/
LSC_L1_L3_CC RTStackStorePolicy();
/**
* @return the store cache policy for the SWHotZone
*/
LSC_L1_L3_CC SWHotZoneStorePolicy();
/**
* @return the store cache policy for the SWStack
*/
LSC_L1_L3_CC SWStackStorePolicy(const CodeGenContext &Ctx);
/**
* @return the load cache policy for the RTStack
*/
LSC_L1_L3_CC RTStackLoadPolicy();
/**
* @return the load cache policy for the SWHotZone
*/
LSC_L1_L3_CC SWHotZoneLoadPolicy();
/**
* @return the load cache policy for the SWStack
*/
LSC_L1_L3_CC SWStackLoadPolicy(const CodeGenContext &Ctx);
} // namespace IGC
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