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//===- IRBuilderFolder.h - Const folder interface for IRBuilder -*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines for constant folding interface used by IRBuilder.
// It is implemented by ConstantFolder (default), TargetFolder and NoFoler.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_IR_IRBUILDERFOLDER_H
#define LLVM_IR_IRBUILDERFOLDER_H
#include "llvm/ADT/ArrayRef.h"
#include "llvm/IR/InstrTypes.h"
#include "llvm/IR/Instruction.h"
namespace llvm {
/// IRBuilderFolder - Interface for constant folding in IRBuilder.
class IRBuilderFolder {
public:
virtual ~IRBuilderFolder();
//===--------------------------------------------------------------------===//
// Value-based folders.
//
// Return an existing value or a constant if the operation can be simplified.
// Otherwise return nullptr.
//===--------------------------------------------------------------------===//
virtual Value *FoldAdd(Value *LHS, Value *RHS, bool HasNUW = false,
bool HasNSW = false) const = 0;
virtual Value *FoldAnd(Value *LHS, Value *RHS) const = 0;
virtual Value *FoldOr(Value *LHS, Value *RHS) const = 0;
virtual Value *FoldICmp(CmpInst::Predicate P, Value *LHS,
Value *RHS) const = 0;
virtual Value *FoldGEP(Type *Ty, Value *Ptr, ArrayRef<Value *> IdxList,
bool IsInBounds = false) const = 0;
virtual Value *FoldSelect(Value *C, Value *True, Value *False) const = 0;
//===--------------------------------------------------------------------===//
// Binary Operators
//===--------------------------------------------------------------------===//
virtual Value *CreateFAdd(Constant *LHS, Constant *RHS) const = 0;
virtual Value *CreateSub(Constant *LHS, Constant *RHS,
bool HasNUW = false, bool HasNSW = false) const = 0;
virtual Value *CreateFSub(Constant *LHS, Constant *RHS) const = 0;
virtual Value *CreateMul(Constant *LHS, Constant *RHS,
bool HasNUW = false, bool HasNSW = false) const = 0;
virtual Value *CreateFMul(Constant *LHS, Constant *RHS) const = 0;
virtual Value *CreateUDiv(Constant *LHS, Constant *RHS,
bool isExact = false) const = 0;
virtual Value *CreateSDiv(Constant *LHS, Constant *RHS,
bool isExact = false) const = 0;
virtual Value *CreateFDiv(Constant *LHS, Constant *RHS) const = 0;
virtual Value *CreateURem(Constant *LHS, Constant *RHS) const = 0;
virtual Value *CreateSRem(Constant *LHS, Constant *RHS) const = 0;
virtual Value *CreateFRem(Constant *LHS, Constant *RHS) const = 0;
virtual Value *CreateShl(Constant *LHS, Constant *RHS,
bool HasNUW = false, bool HasNSW = false) const = 0;
virtual Value *CreateLShr(Constant *LHS, Constant *RHS,
bool isExact = false) const = 0;
virtual Value *CreateAShr(Constant *LHS, Constant *RHS,
bool isExact = false) const = 0;
virtual Value *CreateXor(Constant *LHS, Constant *RHS) const = 0;
virtual Value *CreateBinOp(Instruction::BinaryOps Opc,
Constant *LHS, Constant *RHS) const = 0;
//===--------------------------------------------------------------------===//
// Unary Operators
//===--------------------------------------------------------------------===//
virtual Value *CreateNeg(Constant *C,
bool HasNUW = false, bool HasNSW = false) const = 0;
virtual Value *CreateFNeg(Constant *C) const = 0;
virtual Value *CreateNot(Constant *C) const = 0;
virtual Value *CreateUnOp(Instruction::UnaryOps Opc, Constant *C) const = 0;
//===--------------------------------------------------------------------===//
// Cast/Conversion Operators
//===--------------------------------------------------------------------===//
virtual Value *CreateCast(Instruction::CastOps Op, Constant *C,
Type *DestTy) const = 0;
virtual Value *CreatePointerCast(Constant *C, Type *DestTy) const = 0;
virtual Value *CreatePointerBitCastOrAddrSpaceCast(Constant *C,
Type *DestTy) const = 0;
virtual Value *CreateIntCast(Constant *C, Type *DestTy,
bool isSigned) const = 0;
virtual Value *CreateFPCast(Constant *C, Type *DestTy) const = 0;
virtual Value *CreateBitCast(Constant *C, Type *DestTy) const = 0;
virtual Value *CreateIntToPtr(Constant *C, Type *DestTy) const = 0;
virtual Value *CreatePtrToInt(Constant *C, Type *DestTy) const = 0;
virtual Value *CreateZExtOrBitCast(Constant *C, Type *DestTy) const = 0;
virtual Value *CreateSExtOrBitCast(Constant *C, Type *DestTy) const = 0;
virtual Value *CreateTruncOrBitCast(Constant *C, Type *DestTy) const = 0;
//===--------------------------------------------------------------------===//
// Compare Instructions
//===--------------------------------------------------------------------===//
virtual Value *CreateFCmp(CmpInst::Predicate P, Constant *LHS,
Constant *RHS) const = 0;
//===--------------------------------------------------------------------===//
// Other Instructions
//===--------------------------------------------------------------------===//
virtual Value *CreateExtractElement(Constant *Vec, Constant *Idx) const = 0;
virtual Value *CreateInsertElement(Constant *Vec, Constant *NewElt,
Constant *Idx) const = 0;
virtual Value *CreateShuffleVector(Constant *V1, Constant *V2,
ArrayRef<int> Mask) const = 0;
virtual Value *CreateExtractValue(Constant *Agg,
ArrayRef<unsigned> IdxList) const = 0;
virtual Value *CreateInsertValue(Constant *Agg, Constant *Val,
ArrayRef<unsigned> IdxList) const = 0;
};
} // end namespace llvm
#endif // LLVM_IR_IRBUILDERFOLDER_H
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