mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 19:52:54 +01:00
ae65e281f3
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
96 lines
3.6 KiB
C++
96 lines
3.6 KiB
C++
//===- PassManager.cpp - Infrastructure for managing & running IR passes --===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/IR/PassManager.h"
|
|
#include "llvm/ADT/STLExtras.h"
|
|
#include "llvm/IR/LLVMContext.h"
|
|
|
|
using namespace llvm;
|
|
|
|
// Explicit template instantiations and specialization defininitions for core
|
|
// template typedefs.
|
|
namespace llvm {
|
|
template class AllAnalysesOn<Module>;
|
|
template class AllAnalysesOn<Function>;
|
|
template class PassManager<Module>;
|
|
template class PassManager<Function>;
|
|
template class AnalysisManager<Module>;
|
|
template class AnalysisManager<Function>;
|
|
template class InnerAnalysisManagerProxy<FunctionAnalysisManager, Module>;
|
|
template class OuterAnalysisManagerProxy<ModuleAnalysisManager, Function>;
|
|
|
|
template <>
|
|
bool FunctionAnalysisManagerModuleProxy::Result::invalidate(
|
|
Module &M, const PreservedAnalyses &PA,
|
|
ModuleAnalysisManager::Invalidator &Inv) {
|
|
// If literally everything is preserved, we're done.
|
|
if (PA.areAllPreserved())
|
|
return false; // This is still a valid proxy.
|
|
|
|
// If this proxy isn't marked as preserved, then even if the result remains
|
|
// valid, the key itself may no longer be valid, so we clear everything.
|
|
//
|
|
// Note that in order to preserve this proxy, a module pass must ensure that
|
|
// the FAM has been completely updated to handle the deletion of functions.
|
|
// Specifically, any FAM-cached results for those functions need to have been
|
|
// forcibly cleared. When preserved, this proxy will only invalidate results
|
|
// cached on functions *still in the module* at the end of the module pass.
|
|
auto PAC = PA.getChecker<FunctionAnalysisManagerModuleProxy>();
|
|
if (!PAC.preserved() && !PAC.preservedSet<AllAnalysesOn<Module>>()) {
|
|
InnerAM->clear();
|
|
return true;
|
|
}
|
|
|
|
// Directly check if the relevant set is preserved.
|
|
bool AreFunctionAnalysesPreserved =
|
|
PA.allAnalysesInSetPreserved<AllAnalysesOn<Function>>();
|
|
|
|
// Now walk all the functions to see if any inner analysis invalidation is
|
|
// necessary.
|
|
for (Function &F : M) {
|
|
Optional<PreservedAnalyses> FunctionPA;
|
|
|
|
// Check to see whether the preserved set needs to be pruned based on
|
|
// module-level analysis invalidation that triggers deferred invalidation
|
|
// registered with the outer analysis manager proxy for this function.
|
|
if (auto *OuterProxy =
|
|
InnerAM->getCachedResult<ModuleAnalysisManagerFunctionProxy>(F))
|
|
for (const auto &OuterInvalidationPair :
|
|
OuterProxy->getOuterInvalidations()) {
|
|
AnalysisKey *OuterAnalysisID = OuterInvalidationPair.first;
|
|
const auto &InnerAnalysisIDs = OuterInvalidationPair.second;
|
|
if (Inv.invalidate(OuterAnalysisID, M, PA)) {
|
|
if (!FunctionPA)
|
|
FunctionPA = PA;
|
|
for (AnalysisKey *InnerAnalysisID : InnerAnalysisIDs)
|
|
FunctionPA->abandon(InnerAnalysisID);
|
|
}
|
|
}
|
|
|
|
// Check if we needed a custom PA set, and if so we'll need to run the
|
|
// inner invalidation.
|
|
if (FunctionPA) {
|
|
InnerAM->invalidate(F, *FunctionPA);
|
|
continue;
|
|
}
|
|
|
|
// Otherwise we only need to do invalidation if the original PA set didn't
|
|
// preserve all function analyses.
|
|
if (!AreFunctionAnalysesPreserved)
|
|
InnerAM->invalidate(F, PA);
|
|
}
|
|
|
|
// Return false to indicate that this result is still a valid proxy.
|
|
return false;
|
|
}
|
|
}
|
|
|
|
AnalysisSetKey CFGAnalyses::SetKey;
|
|
|
|
AnalysisSetKey PreservedAnalyses::AllAnalysesKey;
|