Coverage Report

Created: 2019-07-24 05:18

/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/lib/IR/PassRegistry.cpp
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//===- PassRegistry.cpp - Pass Registration Implementation ----------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the PassRegistry, with which passes are registered on
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// initialization, and supports the PassManager in dependency resolution.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/PassRegistry.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/PassInfo.h"
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#include "llvm/PassSupport.h"
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#include "llvm/Support/ManagedStatic.h"
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#include <cassert>
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#include <memory>
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#include <utility>
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using namespace llvm;
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// FIXME: We use ManagedStatic to erase the pass registrar on shutdown.
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// Unfortunately, passes are registered with static ctors, and having
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// llvm_shutdown clear this map prevents successful resurrection after
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// llvm_shutdown is run.  Ideally we should find a solution so that we don't
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// leak the map, AND can still resurrect after shutdown.
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static ManagedStatic<PassRegistry> PassRegistryObj;
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179M
PassRegistry *PassRegistry::getPassRegistry() {
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179M
  return &*PassRegistryObj;
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179M
}
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//===----------------------------------------------------------------------===//
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// Accessors
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//
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PassRegistry::~PassRegistry() = default;
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165M
const PassInfo *PassRegistry::getPassInfo(const void *TI) const {
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165M
  sys::SmartScopedReader<true> Guard(Lock);
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165M
  MapType::const_iterator I = PassInfoMap.find(TI);
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165M
  return I != PassInfoMap.end() ? 
I->second153M
:
nullptr11.9M
;
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165M
}
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2.31k
const PassInfo *PassRegistry::getPassInfo(StringRef Arg) const {
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2.31k
  sys::SmartScopedReader<true> Guard(Lock);
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2.31k
  StringMapType::const_iterator I = PassInfoStringMap.find(Arg);
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2.31k
  return I != PassInfoStringMap.end() ? 
I->second2.31k
:
nullptr5
;
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2.31k
}
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//===----------------------------------------------------------------------===//
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// Pass Registration mechanism
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//
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32.8M
void PassRegistry::registerPass(const PassInfo &PI, bool ShouldFree) {
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32.8M
  sys::SmartScopedWriter<true> Guard(Lock);
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32.8M
  bool Inserted =
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32.8M
      PassInfoMap.insert(std::make_pair(PI.getTypeInfo(), &PI)).second;
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32.8M
  assert(Inserted && "Pass registered multiple times!");
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32.8M
  (void)Inserted;
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32.8M
  PassInfoStringMap[PI.getPassArgument()] = &PI;
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32.8M
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  // Notify any listeners.
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32.8M
  for (auto *Listener : Listeners)
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70.8M
    Listener->passRegistered(&PI);
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32.8M
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32.8M
  if (ShouldFree)
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32.4M
    ToFree.push_back(std::unique_ptr<const PassInfo>(&PI));
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32.8M
}
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2.08M
void PassRegistry::enumerateWith(PassRegistrationListener *L) {
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2.08M
  sys::SmartScopedReader<true> Guard(Lock);
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2.08M
  for (auto PassInfoPair : PassInfoMap)
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665M
    L->passEnumerate(PassInfoPair.second);
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2.08M
}
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/// Analysis Group Mechanisms.
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void PassRegistry::registerAnalysisGroup(const void *InterfaceID,
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                                         const void *PassID,
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                                         PassInfo &Registeree, bool isDefault,
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0
                                         bool ShouldFree) {
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  PassInfo *InterfaceInfo = const_cast<PassInfo *>(getPassInfo(InterfaceID));
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  if (!InterfaceInfo) {
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    // First reference to Interface, register it now.
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    registerPass(Registeree);
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    InterfaceInfo = &Registeree;
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  }
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  assert(Registeree.isAnalysisGroup() &&
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         "Trying to join an analysis group that is a normal pass!");
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  if (PassID) {
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    PassInfo *ImplementationInfo = const_cast<PassInfo *>(getPassInfo(PassID));
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    assert(ImplementationInfo &&
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           "Must register pass before adding to AnalysisGroup!");
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    sys::SmartScopedWriter<true> Guard(Lock);
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    // Make sure we keep track of the fact that the implementation implements
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    // the interface.
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    ImplementationInfo->addInterfaceImplemented(InterfaceInfo);
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    if (isDefault) {
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      assert(InterfaceInfo->getNormalCtor() == nullptr &&
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             "Default implementation for analysis group already specified!");
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      assert(
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          ImplementationInfo->getNormalCtor() &&
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          "Cannot specify pass as default if it does not have a default ctor");
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      InterfaceInfo->setNormalCtor(ImplementationInfo->getNormalCtor());
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    }
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  }
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  if (ShouldFree)
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    ToFree.push_back(std::unique_ptr<const PassInfo>(&Registeree));
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}
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void PassRegistry::addRegistrationListener(PassRegistrationListener *L) {
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  sys::SmartScopedWriter<true> Guard(Lock);
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  Listeners.push_back(L);
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}
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void PassRegistry::removeRegistrationListener(PassRegistrationListener *L) {
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  sys::SmartScopedWriter<true> Guard(Lock);
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  auto I = llvm::find(Listeners, L);
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  Listeners.erase(I);
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}