Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/lib/IR/PassRegistry.cpp

@@ -1,129 +0,0 @@
-//===- PassRegistry.cpp - Pass Registration Implementation ----------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements the PassRegistry, with which passes are registered on
-// initialization, and supports the PassManager in dependency resolution.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/PassRegistry.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/PassInfo.h"
-#include "llvm/PassSupport.h"
-#include "llvm/Support/ManagedStatic.h"
-#include <cassert>
-#include <memory>
-#include <utility>
-
-using namespace llvm;
-
-// FIXME: We use ManagedStatic to erase the pass registrar on shutdown.
-// Unfortunately, passes are registered with static ctors, and having
-// llvm_shutdown clear this map prevents successful resurrection after
-// llvm_shutdown is run.  Ideally we should find a solution so that we don't
-// leak the map, AND can still resurrect after shutdown.
-static ManagedStatic<PassRegistry> PassRegistryObj;
-PassRegistry *PassRegistry::getPassRegistry() {
-  return &*PassRegistryObj;
-}
-
-//===----------------------------------------------------------------------===//
-// Accessors
-//
-
-PassRegistry::~PassRegistry() = default;
-
-const PassInfo *PassRegistry::getPassInfo(const void *TI) const {
-  sys::SmartScopedReader<true> Guard(Lock);
-  MapType::const_iterator I = PassInfoMap.find(TI);
-  return I != PassInfoMap.end() ? I->second : nullptr;
-}
-
-const PassInfo *PassRegistry::getPassInfo(StringRef Arg) const {
-  sys::SmartScopedReader<true> Guard(Lock);
-  StringMapType::const_iterator I = PassInfoStringMap.find(Arg);
-  return I != PassInfoStringMap.end() ? I->second : nullptr;
-}
-
-//===----------------------------------------------------------------------===//
-// Pass Registration mechanism
-//
-
-void PassRegistry::registerPass(const PassInfo &PI, bool ShouldFree) {
-  sys::SmartScopedWriter<true> Guard(Lock);
-  bool Inserted =
-      PassInfoMap.insert(std::make_pair(PI.getTypeInfo(), &PI)).second;
-  assert(Inserted && "Pass registered multiple times!");
-  (void)Inserted;
-  PassInfoStringMap[PI.getPassArgument()] = &PI;
-
-  // Notify any listeners.
-  for (auto *Listener : Listeners)
-    Listener->passRegistered(&PI);
-
-  if (ShouldFree)
-    ToFree.push_back(std::unique_ptr<const PassInfo>(&PI));
-}
-
-void PassRegistry::enumerateWith(PassRegistrationListener *L) {
-  sys::SmartScopedReader<true> Guard(Lock);
-  for (auto PassInfoPair : PassInfoMap)
-    L->passEnumerate(PassInfoPair.second);
-}
-
-/// Analysis Group Mechanisms.
-void PassRegistry::registerAnalysisGroup(const void *InterfaceID,
-                                         const void *PassID,
-                                         PassInfo &Registeree, bool isDefault,
-                                         bool ShouldFree) {
-  PassInfo *InterfaceInfo = const_cast<PassInfo *>(getPassInfo(InterfaceID));
-  if (!InterfaceInfo) {
-    // First reference to Interface, register it now.
-    registerPass(Registeree);
-    InterfaceInfo = &Registeree;
-  }
-  assert(Registeree.isAnalysisGroup() &&
-         "Trying to join an analysis group that is a normal pass!");
-
-  if (PassID) {
-    PassInfo *ImplementationInfo = const_cast<PassInfo *>(getPassInfo(PassID));
-    assert(ImplementationInfo &&
-           "Must register pass before adding to AnalysisGroup!");
-
-    sys::SmartScopedWriter<true> Guard(Lock);
-
-    // Make sure we keep track of the fact that the implementation implements
-    // the interface.
-    ImplementationInfo->addInterfaceImplemented(InterfaceInfo);
-
-    if (isDefault) {
-      assert(InterfaceInfo->getNormalCtor() == nullptr &&
-             "Default implementation for analysis group already specified!");
-      assert(
-          ImplementationInfo->getNormalCtor() &&
-          "Cannot specify pass as default if it does not have a default ctor");
-      InterfaceInfo->setNormalCtor(ImplementationInfo->getNormalCtor());
-    }
-  }
-
-  if (ShouldFree)
-    ToFree.push_back(std::unique_ptr<const PassInfo>(&Registeree));
-}
-
-void PassRegistry::addRegistrationListener(PassRegistrationListener *L) {
-  sys::SmartScopedWriter<true> Guard(Lock);
-  Listeners.push_back(L);
-}
-
-void PassRegistry::removeRegistrationListener(PassRegistrationListener *L) {
-  sys::SmartScopedWriter<true> Guard(Lock);
-
-  auto I = llvm::find(Listeners, L);
-  Listeners.erase(I);
-}