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//===-- Float2Int.h - Demote floating point ops to work on integers -------===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// This file provides the Float2Int pass, which aims to demote floating
// point operations to work on integers, where that is losslessly possible.
#include "llvm/ADT/EquivalenceClasses.h"
#include "llvm/ADT/MapVector.h"
#include "llvm/IR/ConstantRange.h"
#include "llvm/IR/Dominators.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/PassManager.h"
namespace llvm {
class Float2IntPass : public PassInfoMixin<Float2IntPass> {
PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
// Glue for old PM.
bool runImpl(Function &F, const DominatorTree &DT);
void findRoots(Function &F, const DominatorTree &DT,
SmallPtrSet<Instruction *, 8> &Roots);
void seen(Instruction *I, ConstantRange R);
ConstantRange badRange();
ConstantRange unknownRange();
ConstantRange validateRange(ConstantRange R);
void walkBackwards(const SmallPtrSetImpl<Instruction *> &Roots);
void walkForwards();
bool validateAndTransform();
Value *convert(Instruction *I, Type *ToTy);
void cleanup();
MapVector<Instruction *, ConstantRange> SeenInsts;
SmallPtrSet<Instruction *, 8> Roots;
EquivalenceClasses<Instruction *> ECs;
MapVector<Instruction *, Value *> ConvertedInsts;
LLVMContext *Ctx;