Viewing file:  Float2Int.h (1.85 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
//===-- 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 https://llvm.org/LICENSE.txt 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.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TRANSFORMS_SCALAR_FLOAT2INT_H
#define LLVM_TRANSFORMS_SCALAR_FLOAT2INT_H
#include "llvm/ADT/EquivalenceClasses.h"
#include "llvm/ADT/MapVector.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/IR/ConstantRange.h"
#include "llvm/IR/PassManager.h"
namespace llvm {
class DominatorTree;
class Function;
class Instruction;
class LLVMContext;
class Type;
class Value;
class Float2IntPass : public PassInfoMixin<Float2IntPass> {
public:
PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
// Glue for old PM.
bool runImpl(Function &F, const DominatorTree &DT);
private:
void findRoots(Function &F, const DominatorTree &DT);
void seen(Instruction *I, ConstantRange R);
ConstantRange badRange();
ConstantRange unknownRange();
ConstantRange validateRange(ConstantRange R);
std::optional<ConstantRange> calcRange(Instruction *I);
void walkBackwards();
void walkForwards();
bool validateAndTransform(const DataLayout &DL);
Value *convert(Instruction *I, Type *ToTy);
void cleanup();
MapVector<Instruction *, ConstantRange> SeenInsts;
SmallSetVector<Instruction *, 8> Roots;
EquivalenceClasses<Instruction *> ECs;
MapVector<Instruction *, Value *> ConvertedInsts;
LLVMContext *Ctx;
};
}
#endif // LLVM_TRANSFORMS_SCALAR_FLOAT2INT_H
|