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//===- AliasAnalysisEvaluator.h - Alias Analysis Accuracy Evaluator -------===//
// 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
/// \file
/// This file implements a simple N^2 alias analysis accuracy evaluator. The
/// analysis result is a set of statistics of how many times the AA
/// infrastructure provides each kind of alias result and mod/ref result when
/// queried with all pairs of pointers in the function.
/// It can be used to evaluate a change in an alias analysis implementation,
/// algorithm, or the AA pipeline infrastructure itself. It acts like a stable
/// and easily tested consumer of all AA information exposed.
/// This is inspired and adapted from code by: Naveen Neelakantam, Francesco
/// Spadini, and Wojciech Stryjewski.
#include "llvm/IR/Function.h"
#include "llvm/IR/PassManager.h"
namespace llvm {
class AAResults;
class AAEvaluator : public PassInfoMixin<AAEvaluator> {
int64_t FunctionCount;
int64_t NoAliasCount, MayAliasCount, PartialAliasCount, MustAliasCount;
int64_t NoModRefCount, ModCount, RefCount, ModRefCount;
int64_t MustCount, MustRefCount, MustModCount, MustModRefCount;
: FunctionCount(), NoAliasCount(), MayAliasCount(), PartialAliasCount(),
MustAliasCount(), NoModRefCount(), ModCount(), RefCount(),
ModRefCount(), MustCount(), MustRefCount(), MustModCount(),
MustModRefCount() {}
AAEvaluator(AAEvaluator &&Arg)
: FunctionCount(Arg.FunctionCount), NoAliasCount(Arg.NoAliasCount),
MustAliasCount(Arg.MustAliasCount), NoModRefCount(Arg.NoModRefCount),
ModCount(Arg.ModCount), RefCount(Arg.RefCount),
ModRefCount(Arg.ModRefCount), MustCount(Arg.MustCount),
MustRefCount(Arg.MustRefCount), MustModCount(Arg.MustModCount),
MustModRefCount(Arg.MustModRefCount) {
Arg.FunctionCount = 0;
/// Run the pass over the function.
PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
// Allow the legacy pass to run this using an internal API.
friend class AAEvalLegacyPass;
void runInternal(Function &F, AAResults &AA);
/// Create a wrapper of the above for the legacy pass manager.
FunctionPass *createAAEvalPass();