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thirdparty/capstone/suite/synctools/tablegen/include/llvm/IR/ConstantFolder.h
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290
thirdparty/capstone/suite/synctools/tablegen/include/llvm/IR/ConstantFolder.h
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//===- ConstantFolder.h - Constant folding helper ---------------*- 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 the ConstantFolder class, a helper for IRBuilder.
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// It provides IRBuilder with a set of methods for creating constants
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// with minimal folding. For general constant creation and folding,
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// use ConstantExpr and the routines in llvm/Analysis/ConstantFolding.h.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_IR_CONSTANTFOLDER_H
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#define LLVM_IR_CONSTANTFOLDER_H
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/IRBuilderFolder.h"
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#include "llvm/IR/InstrTypes.h"
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#include "llvm/IR/Instruction.h"
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namespace llvm {
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/// ConstantFolder - Create constants with minimum, target independent, folding.
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class ConstantFolder final : public IRBuilderFolder {
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virtual void anchor();
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public:
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explicit ConstantFolder() = default;
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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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Value *FoldAdd(Value *LHS, Value *RHS, bool HasNUW = false,
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bool HasNSW = false) const override {
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auto *LC = dyn_cast<Constant>(LHS);
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auto *RC = dyn_cast<Constant>(RHS);
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if (LC && RC)
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return ConstantExpr::getAdd(LC, RC, HasNUW, HasNSW);
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return nullptr;
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}
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Value *FoldAnd(Value *LHS, Value *RHS) const override {
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auto *LC = dyn_cast<Constant>(LHS);
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auto *RC = dyn_cast<Constant>(RHS);
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if (LC && RC)
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return ConstantExpr::getAnd(LC, RC);
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return nullptr;
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}
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Value *FoldOr(Value *LHS, Value *RHS) const override {
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auto *LC = dyn_cast<Constant>(LHS);
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auto *RC = dyn_cast<Constant>(RHS);
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if (LC && RC)
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return ConstantExpr::getOr(LC, RC);
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return nullptr;
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}
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Value *FoldICmp(CmpInst::Predicate P, Value *LHS, Value *RHS) const override {
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auto *LC = dyn_cast<Constant>(LHS);
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auto *RC = dyn_cast<Constant>(RHS);
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if (LC && RC)
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return ConstantExpr::getCompare(P, LC, RC);
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return nullptr;
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}
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Value *FoldGEP(Type *Ty, Value *Ptr, ArrayRef<Value *> IdxList,
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bool IsInBounds = false) const override {
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if (auto *PC = dyn_cast<Constant>(Ptr)) {
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// Every index must be constant.
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if (any_of(IdxList, [](Value *V) { return !isa<Constant>(V); }))
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return nullptr;
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if (IsInBounds)
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return ConstantExpr::getInBoundsGetElementPtr(Ty, PC, IdxList);
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else
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return ConstantExpr::getGetElementPtr(Ty, PC, IdxList);
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}
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return nullptr;
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}
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Value *FoldSelect(Value *C, Value *True, Value *False) const override {
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auto *CC = dyn_cast<Constant>(C);
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auto *TC = dyn_cast<Constant>(True);
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auto *FC = dyn_cast<Constant>(False);
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if (CC && TC && FC)
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return ConstantExpr::getSelect(CC, TC, FC);
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return nullptr;
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}
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//===--------------------------------------------------------------------===//
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// Binary Operators
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//===--------------------------------------------------------------------===//
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Constant *CreateFAdd(Constant *LHS, Constant *RHS) const override {
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return ConstantExpr::getFAdd(LHS, RHS);
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}
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Constant *CreateSub(Constant *LHS, Constant *RHS,
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bool HasNUW = false, bool HasNSW = false) const override {
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return ConstantExpr::getSub(LHS, RHS, HasNUW, HasNSW);
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}
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Constant *CreateFSub(Constant *LHS, Constant *RHS) const override {
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return ConstantExpr::getFSub(LHS, RHS);
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}
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Constant *CreateMul(Constant *LHS, Constant *RHS,
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bool HasNUW = false, bool HasNSW = false) const override {
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return ConstantExpr::getMul(LHS, RHS, HasNUW, HasNSW);
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}
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Constant *CreateFMul(Constant *LHS, Constant *RHS) const override {
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return ConstantExpr::getFMul(LHS, RHS);
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}
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Constant *CreateUDiv(Constant *LHS, Constant *RHS,
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bool isExact = false) const override {
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return ConstantExpr::getUDiv(LHS, RHS, isExact);
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}
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Constant *CreateSDiv(Constant *LHS, Constant *RHS,
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bool isExact = false) const override {
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return ConstantExpr::getSDiv(LHS, RHS, isExact);
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}
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Constant *CreateFDiv(Constant *LHS, Constant *RHS) const override {
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return ConstantExpr::getFDiv(LHS, RHS);
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}
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Constant *CreateURem(Constant *LHS, Constant *RHS) const override {
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return ConstantExpr::getURem(LHS, RHS);
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}
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Constant *CreateSRem(Constant *LHS, Constant *RHS) const override {
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return ConstantExpr::getSRem(LHS, RHS);
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}
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Constant *CreateFRem(Constant *LHS, Constant *RHS) const override {
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return ConstantExpr::getFRem(LHS, RHS);
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}
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Constant *CreateShl(Constant *LHS, Constant *RHS,
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bool HasNUW = false, bool HasNSW = false) const override {
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return ConstantExpr::getShl(LHS, RHS, HasNUW, HasNSW);
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}
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Constant *CreateLShr(Constant *LHS, Constant *RHS,
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bool isExact = false) const override {
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return ConstantExpr::getLShr(LHS, RHS, isExact);
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}
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Constant *CreateAShr(Constant *LHS, Constant *RHS,
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bool isExact = false) const override {
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return ConstantExpr::getAShr(LHS, RHS, isExact);
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}
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Constant *CreateOr(Constant *LHS, Constant *RHS) const {
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return ConstantExpr::getOr(LHS, RHS);
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}
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Constant *CreateXor(Constant *LHS, Constant *RHS) const override {
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return ConstantExpr::getXor(LHS, RHS);
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}
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Constant *CreateBinOp(Instruction::BinaryOps Opc,
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Constant *LHS, Constant *RHS) const override {
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return ConstantExpr::get(Opc, LHS, RHS);
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}
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//===--------------------------------------------------------------------===//
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// Unary Operators
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//===--------------------------------------------------------------------===//
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Constant *CreateNeg(Constant *C,
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bool HasNUW = false, bool HasNSW = false) const override {
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return ConstantExpr::getNeg(C, HasNUW, HasNSW);
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}
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Constant *CreateFNeg(Constant *C) const override {
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return ConstantExpr::getFNeg(C);
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}
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Constant *CreateNot(Constant *C) const override {
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return ConstantExpr::getNot(C);
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}
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Constant *CreateUnOp(Instruction::UnaryOps Opc, Constant *C) const override {
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return ConstantExpr::get(Opc, C);
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}
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//===--------------------------------------------------------------------===//
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// Cast/Conversion Operators
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//===--------------------------------------------------------------------===//
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Constant *CreateCast(Instruction::CastOps Op, Constant *C,
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Type *DestTy) const override {
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return ConstantExpr::getCast(Op, C, DestTy);
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}
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Constant *CreatePointerCast(Constant *C, Type *DestTy) const override {
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return ConstantExpr::getPointerCast(C, DestTy);
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}
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Constant *CreatePointerBitCastOrAddrSpaceCast(Constant *C,
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Type *DestTy) const override {
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return ConstantExpr::getPointerBitCastOrAddrSpaceCast(C, DestTy);
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}
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Constant *CreateIntCast(Constant *C, Type *DestTy,
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bool isSigned) const override {
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return ConstantExpr::getIntegerCast(C, DestTy, isSigned);
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}
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Constant *CreateFPCast(Constant *C, Type *DestTy) const override {
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return ConstantExpr::getFPCast(C, DestTy);
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}
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Constant *CreateBitCast(Constant *C, Type *DestTy) const override {
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return CreateCast(Instruction::BitCast, C, DestTy);
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}
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Constant *CreateIntToPtr(Constant *C, Type *DestTy) const override {
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return CreateCast(Instruction::IntToPtr, C, DestTy);
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}
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Constant *CreatePtrToInt(Constant *C, Type *DestTy) const override {
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return CreateCast(Instruction::PtrToInt, C, DestTy);
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}
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Constant *CreateZExtOrBitCast(Constant *C, Type *DestTy) const override {
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return ConstantExpr::getZExtOrBitCast(C, DestTy);
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}
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Constant *CreateSExtOrBitCast(Constant *C, Type *DestTy) const override {
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return ConstantExpr::getSExtOrBitCast(C, DestTy);
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}
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Constant *CreateTruncOrBitCast(Constant *C, Type *DestTy) const override {
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return ConstantExpr::getTruncOrBitCast(C, DestTy);
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}
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//===--------------------------------------------------------------------===//
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// Compare Instructions
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//===--------------------------------------------------------------------===//
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Constant *CreateFCmp(CmpInst::Predicate P, Constant *LHS,
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Constant *RHS) const override {
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return ConstantExpr::getCompare(P, LHS, RHS);
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}
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//===--------------------------------------------------------------------===//
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// Other Instructions
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//===--------------------------------------------------------------------===//
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Constant *CreateExtractElement(Constant *Vec, Constant *Idx) const override {
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return ConstantExpr::getExtractElement(Vec, Idx);
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}
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Constant *CreateInsertElement(Constant *Vec, Constant *NewElt,
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Constant *Idx) const override {
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return ConstantExpr::getInsertElement(Vec, NewElt, Idx);
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}
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Constant *CreateShuffleVector(Constant *V1, Constant *V2,
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ArrayRef<int> Mask) const override {
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return ConstantExpr::getShuffleVector(V1, V2, Mask);
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}
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Constant *CreateExtractValue(Constant *Agg,
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ArrayRef<unsigned> IdxList) const override {
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return ConstantExpr::getExtractValue(Agg, IdxList);
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}
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Constant *CreateInsertValue(Constant *Agg, Constant *Val,
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ArrayRef<unsigned> IdxList) const override {
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return ConstantExpr::getInsertValue(Agg, Val, IdxList);
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}
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};
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} // end namespace llvm
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#endif // LLVM_IR_CONSTANTFOLDER_H
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