99 lines
3.8 KiB
C++
99 lines
3.8 KiB
C++
//===- IRBuilderFolder.h - Const folder interface for IRBuilder -*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines for constant folding interface used by IRBuilder.
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// It is implemented by ConstantFolder (default), TargetFolder and NoFoler.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_IR_IRBUILDERFOLDER_H
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#define LLVM_IR_IRBUILDERFOLDER_H
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/IR/GEPNoWrapFlags.h"
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#include "llvm/IR/InstrTypes.h"
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#include "llvm/IR/Instruction.h"
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#include "llvm/Support/Compiler.h"
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namespace llvm {
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/// IRBuilderFolder - Interface for constant folding in IRBuilder.
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class LLVM_ABI IRBuilderFolder {
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public:
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virtual ~IRBuilderFolder();
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//===--------------------------------------------------------------------===//
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// Value-based folders.
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//
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// Return an existing value or a constant if the operation can be simplified.
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// Otherwise return nullptr.
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//===--------------------------------------------------------------------===//
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virtual Value *FoldBinOp(Instruction::BinaryOps Opc, Value *LHS,
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Value *RHS) const = 0;
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virtual Value *FoldExactBinOp(Instruction::BinaryOps Opc, Value *LHS,
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Value *RHS, bool IsExact) const = 0;
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virtual Value *FoldNoWrapBinOp(Instruction::BinaryOps Opc, Value *LHS,
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Value *RHS, bool HasNUW,
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bool HasNSW) const = 0;
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virtual Value *FoldBinOpFMF(Instruction::BinaryOps Opc, Value *LHS,
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Value *RHS, FastMathFlags FMF) const = 0;
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virtual Value *FoldUnOpFMF(Instruction::UnaryOps Opc, Value *V,
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FastMathFlags FMF) const = 0;
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virtual Value *FoldCmp(CmpInst::Predicate P, Value *LHS,
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Value *RHS) const = 0;
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virtual Value *FoldGEP(Type *Ty, Value *Ptr, ArrayRef<Value *> IdxList,
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GEPNoWrapFlags NW) const = 0;
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virtual Value *FoldSelect(Value *C, Value *True, Value *False,
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FastMathFlags FMF = FastMathFlags()) const = 0;
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virtual Value *FoldExtractValue(Value *Agg,
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ArrayRef<unsigned> IdxList) const = 0;
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virtual Value *FoldInsertValue(Value *Agg, Value *Val,
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ArrayRef<unsigned> IdxList) const = 0;
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virtual Value *FoldExtractElement(Value *Vec, Value *Idx) const = 0;
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virtual Value *FoldInsertElement(Value *Vec, Value *NewElt,
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Value *Idx) const = 0;
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virtual Value *FoldShuffleVector(Value *V1, Value *V2,
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ArrayRef<int> Mask) const = 0;
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virtual Value *FoldCast(Instruction::CastOps Op, Value *V,
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Type *DestTy) const = 0;
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virtual Value *
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FoldUnaryIntrinsic(Intrinsic::ID ID, Value *Op, Type *Ty,
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FastMathFlags FMF = FastMathFlags()) const = 0;
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virtual Value *
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FoldBinaryIntrinsic(Intrinsic::ID ID, Value *LHS, Value *RHS, Type *Ty,
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FastMathFlags FMF = FastMathFlags()) const = 0;
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//===--------------------------------------------------------------------===//
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// Cast/Conversion Operators
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//===--------------------------------------------------------------------===//
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virtual Value *CreatePointerCast(Constant *C, Type *DestTy) const = 0;
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virtual Value *CreatePointerBitCastOrAddrSpaceCast(Constant *C,
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Type *DestTy) const = 0;
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};
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} // end namespace llvm
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#endif // LLVM_IR_IRBUILDERFOLDER_H
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