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//===- ScopPass.cpp - The base class of Passes that operate on Polly IR ---===//
//
// 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 contains the definitions of the ScopPass members.
//
//===----------------------------------------------------------------------===//
#include "polly/ScopPass.h"
#include "polly/ScopInfo.h"
#include "llvm/Analysis/BasicAliasAnalysis.h"
#include "llvm/Analysis/GlobalsModRef.h"
#include "llvm/Analysis/LazyBlockFrequencyInfo.h"
#include "llvm/Analysis/LazyBranchProbabilityInfo.h"
#include "llvm/Analysis/OptimizationRemarkEmitter.h"
#include "llvm/Analysis/ScalarEvolutionAliasAnalysis.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include <optional>
using namespace llvm;
using namespace polly;
bool ScopPass::runOnRegion(Region *R, RGPassManager &RGM) {
S = nullptr;
if (skipRegion(*R))
return false;
if ((S = getAnalysis<ScopInfoRegionPass>().getScop()))
return runOnScop(*S);
return false;
}
void ScopPass::print(raw_ostream &OS, const Module *M) const {
if (S)
printScop(OS, *S);
}
void ScopPass::getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<ScopInfoRegionPass>();
AU.addPreserved<AAResultsWrapperPass>();
AU.addPreserved<BasicAAWrapperPass>();
AU.addPreserved<LoopInfoWrapperPass>();
AU.addPreserved<DominatorTreeWrapperPass>();
AU.addPreserved<GlobalsAAWrapperPass>();
AU.addPreserved<ScopDetectionWrapperPass>();
AU.addPreserved<ScalarEvolutionWrapperPass>();
AU.addPreserved<SCEVAAWrapperPass>();
AU.addPreserved<OptimizationRemarkEmitterWrapperPass>();
AU.addPreserved<LazyBlockFrequencyInfoPass>();
AU.addPreserved<LazyBranchProbabilityInfoPass>();
AU.addPreserved<RegionInfoPass>();
AU.addPreserved<ScopInfoRegionPass>();
AU.addPreserved<TargetTransformInfoWrapperPass>();
}
namespace polly {
template class OwningInnerAnalysisManagerProxy<ScopAnalysisManager, Function>;
}
namespace llvm {
template class PassManager<Scop, ScopAnalysisManager,
ScopStandardAnalysisResults &, SPMUpdater &>;
template class InnerAnalysisManagerProxy<ScopAnalysisManager, Function>;
template class OuterAnalysisManagerProxy<FunctionAnalysisManager, Scop,
ScopStandardAnalysisResults &>;
template <>
PreservedAnalyses
PassManager<Scop, ScopAnalysisManager, ScopStandardAnalysisResults &,
SPMUpdater &>::run(Scop &S, ScopAnalysisManager &AM,
ScopStandardAnalysisResults &AR, SPMUpdater &U) {
auto PA = PreservedAnalyses::all();
for (auto &Pass : Passes) {
auto PassPA = Pass->run(S, AM, AR, U);
AM.invalidate(S, PassPA);
PA.intersect(std::move(PassPA));
}
// All analyses for 'this' Scop have been invalidated above.
// If ScopPasses affect break other scops they have to propagate this
// information through the updater
PA.preserveSet<AllAnalysesOn<Scop>>();
return PA;
}
bool ScopAnalysisManagerFunctionProxy::Result::invalidate(
Function &F, const PreservedAnalyses &PA,
FunctionAnalysisManager::Invalidator &Inv) {
// First, check whether our ScopInfo is about to be invalidated
auto PAC = PA.getChecker<ScopAnalysisManagerFunctionProxy>();
if (!(PAC.preserved() || PAC.preservedSet<AllAnalysesOn<Function>>()) ||
Inv.invalidate<ScopInfoAnalysis>(F, PA) ||
Inv.invalidate<ScalarEvolutionAnalysis>(F, PA) ||
Inv.invalidate<LoopAnalysis>(F, PA) ||
Inv.invalidate<DominatorTreeAnalysis>(F, PA)) {
// As everything depends on ScopInfo, we must drop all existing results
for (auto &S : *SI)
if (auto *scop = S.second.get())
if (InnerAM)
InnerAM->clear(*scop, scop->getName());
InnerAM = nullptr;
return true; // Invalidate the proxy result as well.
}
bool allPreserved = PA.allAnalysesInSetPreserved<AllAnalysesOn<Scop>>();
// Invalidate all non-preserved analyses
// Even if all analyses were preserved, we still need to run deferred
// invalidation
for (auto &S : *SI) {
std::optional<PreservedAnalyses> InnerPA;
auto *scop = S.second.get();
if (!scop)
continue;
if (auto *OuterProxy =
InnerAM->getCachedResult<FunctionAnalysisManagerScopProxy>(*scop)) {
for (const auto &InvPair : OuterProxy->getOuterInvalidations()) {
auto *OuterAnalysisID = InvPair.first;
const auto &InnerAnalysisIDs = InvPair.second;
if (Inv.invalidate(OuterAnalysisID, F, PA)) {
if (!InnerPA)
InnerPA = PA;
for (auto *InnerAnalysisID : InnerAnalysisIDs)
InnerPA->abandon(InnerAnalysisID);
}
}
if (InnerPA) {
InnerAM->invalidate(*scop, *InnerPA);
continue;
}
}
if (!allPreserved)
InnerAM->invalidate(*scop, PA);
}
return false; // This proxy is still valid
}
template <>
ScopAnalysisManagerFunctionProxy::Result
ScopAnalysisManagerFunctionProxy::run(Function &F,
FunctionAnalysisManager &FAM) {
return Result(*InnerAM, FAM.getResult<ScopInfoAnalysis>(F));
}
} // namespace llvm
namespace polly {
template <>
OwningScopAnalysisManagerFunctionProxy::Result
OwningScopAnalysisManagerFunctionProxy::run(Function &F,
FunctionAnalysisManager &FAM) {
return Result(InnerAM, FAM.getResult<ScopInfoAnalysis>(F));
}
} // namespace polly
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