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https://github.com/c64scene-ar/llvm-6502.git
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205831 91177308-0d34-0410-b5e6-96231b3b80d8
198 lines
6.7 KiB
C++
198 lines
6.7 KiB
C++
//===- PassManager.cpp - Infrastructure for managing & running IR passes --===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/IR/PassManager.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/Debug.h"
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using namespace llvm;
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static cl::opt<bool>
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DebugPM("debug-pass-manager", cl::Hidden,
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cl::desc("Print pass management debugging information"));
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PreservedAnalyses ModulePassManager::run(Module *M, ModuleAnalysisManager *AM) {
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PreservedAnalyses PA = PreservedAnalyses::all();
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if (DebugPM)
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dbgs() << "Starting module pass manager run.\n";
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for (unsigned Idx = 0, Size = Passes.size(); Idx != Size; ++Idx) {
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if (DebugPM)
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dbgs() << "Running module pass: " << Passes[Idx]->name() << "\n";
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PreservedAnalyses PassPA = Passes[Idx]->run(M, AM);
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if (AM)
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AM->invalidate(M, PassPA);
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PA.intersect(std::move(PassPA));
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}
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if (DebugPM)
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dbgs() << "Finished module pass manager run.\n";
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return PA;
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}
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ModuleAnalysisManager::ResultConceptT &
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ModuleAnalysisManager::getResultImpl(void *PassID, Module *M) {
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ModuleAnalysisResultMapT::iterator RI;
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bool Inserted;
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std::tie(RI, Inserted) = ModuleAnalysisResults.insert(std::make_pair(
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PassID, std::unique_ptr<detail::AnalysisResultConcept<Module *>>()));
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// If we don't have a cached result for this module, look up the pass and run
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// it to produce a result, which we then add to the cache.
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if (Inserted)
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RI->second = std::move(lookupPass(PassID).run(M, this));
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return *RI->second;
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}
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ModuleAnalysisManager::ResultConceptT *
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ModuleAnalysisManager::getCachedResultImpl(void *PassID, Module *M) const {
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ModuleAnalysisResultMapT::const_iterator RI =
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ModuleAnalysisResults.find(PassID);
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return RI == ModuleAnalysisResults.end() ? nullptr : &*RI->second;
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}
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void ModuleAnalysisManager::invalidateImpl(void *PassID, Module *M) {
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ModuleAnalysisResults.erase(PassID);
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}
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void ModuleAnalysisManager::invalidateImpl(Module *M,
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const PreservedAnalyses &PA) {
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// FIXME: This is a total hack based on the fact that erasure doesn't
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// invalidate iteration for DenseMap.
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for (ModuleAnalysisResultMapT::iterator I = ModuleAnalysisResults.begin(),
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E = ModuleAnalysisResults.end();
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I != E; ++I)
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if (I->second->invalidate(M, PA))
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ModuleAnalysisResults.erase(I);
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}
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PreservedAnalyses FunctionPassManager::run(Function *F,
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FunctionAnalysisManager *AM) {
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PreservedAnalyses PA = PreservedAnalyses::all();
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if (DebugPM)
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dbgs() << "Starting function pass manager run.\n";
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for (unsigned Idx = 0, Size = Passes.size(); Idx != Size; ++Idx) {
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if (DebugPM)
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dbgs() << "Running function pass: " << Passes[Idx]->name() << "\n";
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PreservedAnalyses PassPA = Passes[Idx]->run(F, AM);
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if (AM)
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AM->invalidate(F, PassPA);
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PA.intersect(std::move(PassPA));
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}
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if (DebugPM)
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dbgs() << "Finished function pass manager run.\n";
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return PA;
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}
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bool FunctionAnalysisManager::empty() const {
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assert(FunctionAnalysisResults.empty() ==
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FunctionAnalysisResultLists.empty() &&
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"The storage and index of analysis results disagree on how many there "
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"are!");
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return FunctionAnalysisResults.empty();
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}
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void FunctionAnalysisManager::clear() {
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FunctionAnalysisResults.clear();
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FunctionAnalysisResultLists.clear();
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}
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FunctionAnalysisManager::ResultConceptT &
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FunctionAnalysisManager::getResultImpl(void *PassID, Function *F) {
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FunctionAnalysisResultMapT::iterator RI;
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bool Inserted;
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std::tie(RI, Inserted) = FunctionAnalysisResults.insert(std::make_pair(
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std::make_pair(PassID, F), FunctionAnalysisResultListT::iterator()));
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// If we don't have a cached result for this function, look up the pass and
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// run it to produce a result, which we then add to the cache.
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if (Inserted) {
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FunctionAnalysisResultListT &ResultList = FunctionAnalysisResultLists[F];
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ResultList.emplace_back(PassID, lookupPass(PassID).run(F, this));
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RI->second = std::prev(ResultList.end());
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}
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return *RI->second->second;
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}
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FunctionAnalysisManager::ResultConceptT *
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FunctionAnalysisManager::getCachedResultImpl(void *PassID, Function *F) const {
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FunctionAnalysisResultMapT::const_iterator RI =
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FunctionAnalysisResults.find(std::make_pair(PassID, F));
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return RI == FunctionAnalysisResults.end() ? nullptr : &*RI->second->second;
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}
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void FunctionAnalysisManager::invalidateImpl(void *PassID, Function *F) {
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FunctionAnalysisResultMapT::iterator RI =
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FunctionAnalysisResults.find(std::make_pair(PassID, F));
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if (RI == FunctionAnalysisResults.end())
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return;
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FunctionAnalysisResultLists[F].erase(RI->second);
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}
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void FunctionAnalysisManager::invalidateImpl(Function *F,
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const PreservedAnalyses &PA) {
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// Clear all the invalidated results associated specifically with this
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// function.
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SmallVector<void *, 8> InvalidatedPassIDs;
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FunctionAnalysisResultListT &ResultsList = FunctionAnalysisResultLists[F];
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for (FunctionAnalysisResultListT::iterator I = ResultsList.begin(),
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E = ResultsList.end();
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I != E;)
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if (I->second->invalidate(F, PA)) {
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InvalidatedPassIDs.push_back(I->first);
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I = ResultsList.erase(I);
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} else {
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++I;
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}
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while (!InvalidatedPassIDs.empty())
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FunctionAnalysisResults.erase(
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std::make_pair(InvalidatedPassIDs.pop_back_val(), F));
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}
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char FunctionAnalysisManagerModuleProxy::PassID;
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FunctionAnalysisManagerModuleProxy::Result
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FunctionAnalysisManagerModuleProxy::run(Module *M) {
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assert(FAM->empty() && "Function analyses ran prior to the module proxy!");
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return Result(*FAM);
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}
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FunctionAnalysisManagerModuleProxy::Result::~Result() {
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// Clear out the analysis manager if we're being destroyed -- it means we
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// didn't even see an invalidate call when we got invalidated.
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FAM->clear();
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}
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bool FunctionAnalysisManagerModuleProxy::Result::invalidate(
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Module *M, const PreservedAnalyses &PA) {
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// If this proxy isn't marked as preserved, then we can't even invalidate
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// individual function analyses, there may be an invalid set of Function
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// objects in the cache making it impossible to incrementally preserve them.
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// Just clear the entire manager.
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if (!PA.preserved(ID()))
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FAM->clear();
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// Return false to indicate that this result is still a valid proxy.
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return false;
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}
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char ModuleAnalysisManagerFunctionProxy::PassID;
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