intel-graphics-compiler/IGC/common/IGCConstantFolder.h at master · intel/intel-graphics-compiler · GitHub

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/*========================== begin_copyright_notice ============================

Copyright (C) 2020-2025 Intel Corporation

SPDX-License-Identifier: MIT

============================= end_copyright_notice ===========================*/

#ifndef IGC_CONSTANT_FOLDER_H
#define IGC_CONSTANT_FOLDER_H

#include "common/LLVMWarningsPush.hpp"
#include "llvm/Config/llvm-config.h"
#include "llvm/IR/ConstantFolder.h"
#include "common/LLVMWarningsPop.hpp"
#include "llvmWrapper/IR/Instructions.h"
#include "llvmWrapper/IR/ConstantFolder.h"

namespace IGC {

class IGCConstantFolder : public IGCLLVM::ConstantFolderBase {
public:
  // TODO: Once the switch to LLVM 15 is complete, align the method names
  // with those in the base ConstantFolder class, i.e. migrate from
  // llvm::Constant* Create* to llvm::Value* Fold* infrastructure.
  llvm::Constant *CreateGradientXFine(llvm::Constant *C0) const;
  llvm::Constant *CreateGradientYFine(llvm::Constant *C0) const;
  llvm::Constant *CreateGradientX(llvm::Constant *C0) const;
  llvm::Constant *CreateGradientY(llvm::Constant *C0) const;
  llvm::Constant *CreateRsq(llvm::Constant *C0) const;
  llvm::Constant *CreateRoundNE(llvm::Constant *C0) const;
  llvm::Constant *CreateFSat(llvm::Constant *C0) const;
  llvm::Constant *CreateFAdd(llvm::Constant *C0, llvm::Constant *C1,
                             llvm::APFloatBase::roundingMode roundingMode) const;
  llvm::Constant *CreateFMul(llvm::Constant *C0, llvm::Constant *C1,
                             llvm::APFloatBase::roundingMode roundingMode) const;
  llvm::Constant *CreateFPTrunc(llvm::Constant *C0, llvm::Type *dstType,
                                llvm::APFloatBase::roundingMode roundingMode) const;
  llvm::Constant *CreateHFToBF8Trunc(llvm::Constant *C0, llvm::Type *dstType, uint32_t roundingMode,
                                     bool saturate) const;
  llvm::Constant *CreateHFToHF8Trunc(llvm::Constant *C0, llvm::Type *dstType, uint32_t roundingMode,
                                     bool saturate) const;
  llvm::Constant *CreateBF8ToHF(llvm::Constant *C0) const;
  llvm::Constant *CreateHF8ToHF(llvm::Constant *C0) const;
  llvm::Constant *CreateUbfe(llvm::Constant *C0, llvm::Constant *C1, llvm::Constant *C2) const;
  llvm::Constant *CreateIbfe(llvm::Constant *C0, llvm::Constant *C1, llvm::Constant *C2) const;
  llvm::Constant *CreateCanonicalize(llvm::Constant *C0, bool flushDenorms = true) const;
  llvm::Constant *CreateFirstBitHi(llvm::Constant *C0) const;
  llvm::Constant *CreateFirstBitShi(llvm::Constant *C0) const;
  llvm::Constant *CreateFirstBitLo(llvm::Constant *C0) const;
  llvm::Constant *CreateBfi(llvm::Constant *C0, llvm::Constant *C1, llvm::Constant *C2, llvm::Constant *C3) const;
  llvm::Constant *CreateBfrev(llvm::Constant *C0) const;

private:
  llvm::Constant *CreateGradient(llvm::Constant *C0) const;
};

} // namespace IGC

#endif // IGC_CONSTANT_FOLDER_H