Initial Commit

thirdparty/capstone/suite/synctools/tablegen/include/llvm/IR/PassManagerImpl.h

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+//===- PassManagerImpl.h - Pass management infrastructure -------*- C++ -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+/// \file
+/// Provides implementations for PassManager and AnalysisManager template
+/// methods. These classes should be explicitly instantiated for any IR unit,
+/// and files doing the explicit instantiation should include this header.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_IR_PASSMANAGERIMPL_H
+#define LLVM_IR_PASSMANAGERIMPL_H
+
+#include "llvm/IR/PassManager.h"
+
+namespace llvm {
+
+template <typename IRUnitT, typename... ExtraArgTs>
+inline AnalysisManager<IRUnitT, ExtraArgTs...>::AnalysisManager() = default;
+
+template <typename IRUnitT, typename... ExtraArgTs>
+inline AnalysisManager<IRUnitT, ExtraArgTs...>::AnalysisManager(
+    AnalysisManager &&) = default;
+
+template <typename IRUnitT, typename... ExtraArgTs>
+inline AnalysisManager<IRUnitT, ExtraArgTs...> &
+AnalysisManager<IRUnitT, ExtraArgTs...>::operator=(AnalysisManager &&) =
+    default;
+
+template <typename IRUnitT, typename... ExtraArgTs>
+inline void
+AnalysisManager<IRUnitT, ExtraArgTs...>::clear(IRUnitT &IR,
+                                               llvm::StringRef Name) {
+  if (auto *PI = getCachedResult<PassInstrumentationAnalysis>(IR))
+    PI->runAnalysesCleared(Name);
+
+  auto ResultsListI = AnalysisResultLists.find(&IR);
+  if (ResultsListI == AnalysisResultLists.end())
+    return;
+  // Delete the map entries that point into the results list.
+  for (auto &IDAndResult : ResultsListI->second)
+    AnalysisResults.erase({IDAndResult.first, &IR});
+
+  // And actually destroy and erase the results associated with this IR.
+  AnalysisResultLists.erase(ResultsListI);
+}
+
+template <typename IRUnitT, typename... ExtraArgTs>
+inline typename AnalysisManager<IRUnitT, ExtraArgTs...>::ResultConceptT &
+AnalysisManager<IRUnitT, ExtraArgTs...>::getResultImpl(
+    AnalysisKey *ID, IRUnitT &IR, ExtraArgTs... ExtraArgs) {
+  typename AnalysisResultMapT::iterator RI;
+  bool Inserted;
+  std::tie(RI, Inserted) = AnalysisResults.insert(std::make_pair(
+      std::make_pair(ID, &IR), typename AnalysisResultListT::iterator()));
+
+  // If we don't have a cached result for this function, look up the pass and
+  // run it to produce a result, which we then add to the cache.
+  if (Inserted) {
+    auto &P = this->lookUpPass(ID);
+
+    PassInstrumentation PI;
+    if (ID != PassInstrumentationAnalysis::ID()) {
+      PI = getResult<PassInstrumentationAnalysis>(IR, ExtraArgs...);
+      PI.runBeforeAnalysis(P, IR);
+    }
+
+    AnalysisResultListT &ResultList = AnalysisResultLists[&IR];
+    ResultList.emplace_back(ID, P.run(IR, *this, ExtraArgs...));
+
+    PI.runAfterAnalysis(P, IR);
+
+    // P.run may have inserted elements into AnalysisResults and invalidated
+    // RI.
+    RI = AnalysisResults.find({ID, &IR});
+    assert(RI != AnalysisResults.end() && "we just inserted it!");
+
+    RI->second = std::prev(ResultList.end());
+  }
+
+  return *RI->second->second;
+}
+
+template <typename IRUnitT, typename... ExtraArgTs>
+inline void AnalysisManager<IRUnitT, ExtraArgTs...>::invalidate(
+    IRUnitT &IR, const PreservedAnalyses &PA) {
+  // We're done if all analyses on this IR unit are preserved.
+  if (PA.allAnalysesInSetPreserved<AllAnalysesOn<IRUnitT>>())
+    return;
+
+  // Track whether each analysis's result is invalidated in
+  // IsResultInvalidated.
+  SmallDenseMap<AnalysisKey *, bool, 8> IsResultInvalidated;
+  Invalidator Inv(IsResultInvalidated, AnalysisResults);
+  AnalysisResultListT &ResultsList = AnalysisResultLists[&IR];
+  for (auto &AnalysisResultPair : ResultsList) {
+    // This is basically the same thing as Invalidator::invalidate, but we
+    // can't call it here because we're operating on the type-erased result.
+    // Moreover if we instead called invalidate() directly, it would do an
+    // unnecessary look up in ResultsList.
+    AnalysisKey *ID = AnalysisResultPair.first;
+    auto &Result = *AnalysisResultPair.second;
+
+    auto IMapI = IsResultInvalidated.find(ID);
+    if (IMapI != IsResultInvalidated.end())
+      // This result was already handled via the Invalidator.
+      continue;
+
+    // Try to invalidate the result, giving it the Invalidator so it can
+    // recursively query for any dependencies it has and record the result.
+    // Note that we cannot reuse 'IMapI' here or pre-insert the ID, as
+    // Result.invalidate may insert things into the map, invalidating our
+    // iterator.
+    bool Inserted =
+        IsResultInvalidated.insert({ID, Result.invalidate(IR, PA, Inv)}).second;
+    (void)Inserted;
+    assert(Inserted && "Should never have already inserted this ID, likely "
+                       "indicates a cycle!");
+  }
+
+  // Now erase the results that were marked above as invalidated.
+  if (!IsResultInvalidated.empty()) {
+    for (auto I = ResultsList.begin(), E = ResultsList.end(); I != E;) {
+      AnalysisKey *ID = I->first;
+      if (!IsResultInvalidated.lookup(ID)) {
+        ++I;
+        continue;
+      }
+
+      if (auto *PI = getCachedResult<PassInstrumentationAnalysis>(IR))
+        PI->runAnalysisInvalidated(this->lookUpPass(ID), IR);
+
+      I = ResultsList.erase(I);
+      AnalysisResults.erase({ID, &IR});
+    }
+  }
+
+  if (ResultsList.empty())
+    AnalysisResultLists.erase(&IR);
+}
+} // end namespace llvm
+
+#endif // LLVM_IR_PASSMANAGERIMPL_H