-//===- PassManager.h - Infrastructure for managing & running IR passes ----===//
+//===- PassManager.cpp - Infrastructure for managing & running IR passes --===//
//
// The LLVM Compiler Infrastructure
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/STLExtras.h"
+#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/PassManager.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
using namespace llvm;
static cl::opt<bool>
-DebugPM("debug-pass-manager", cl::Hidden,
- cl::desc("Print pass management debugging information"));
+ DebugPM("debug-pass-manager", cl::Hidden,
+ cl::desc("Print pass management debugging information"));
-PreservedAnalyses ModulePassManager::run(Module *M, ModuleAnalysisManager *AM) {
+PreservedAnalyses ModulePassManager::run(Module &M, ModuleAnalysisManager *AM) {
PreservedAnalyses PA = PreservedAnalyses::all();
if (DebugPM)
dbgs() << "Running module pass: " << Passes[Idx]->name() << "\n";
PreservedAnalyses PassPA = Passes[Idx]->run(M, AM);
+
+ // If we have an active analysis manager at this level we want to ensure we
+ // update it as each pass runs and potentially invalidates analyses. We
+ // also update the preserved set of analyses based on what analyses we have
+ // already handled the invalidation for here and don't need to invalidate
+ // when finished.
if (AM)
- AM->invalidate(M, PassPA);
+ PassPA = AM->invalidate(M, std::move(PassPA));
+
+ // Finally, we intersect the final preserved analyses to compute the
+ // aggregate preserved set for this pass manager.
PA.intersect(std::move(PassPA));
+
+ M.getContext().yield();
}
if (DebugPM)
}
ModuleAnalysisManager::ResultConceptT &
-ModuleAnalysisManager::getResultImpl(void *PassID, Module *M) {
+ModuleAnalysisManager::getResultImpl(void *PassID, Module &M) {
ModuleAnalysisResultMapT::iterator RI;
bool Inserted;
- llvm::tie(RI, Inserted) = ModuleAnalysisResults.insert(std::make_pair(
- PassID, polymorphic_ptr<detail::AnalysisResultConcept<Module *> >()));
+ std::tie(RI, Inserted) = ModuleAnalysisResults.insert(std::make_pair(
+ PassID, std::unique_ptr<detail::AnalysisResultConcept<Module &>>()));
// If we don't have a cached result for this module, look up the pass and run
// it to produce a result, which we then add to the cache.
- if (Inserted)
- RI->second = lookupPass(PassID).run(M, this);
+ if (Inserted) {
+ auto &P = lookupPass(PassID);
+ if (DebugPM)
+ dbgs() << "Running module analysis: " << P.name() << "\n";
+ RI->second = P.run(M, this);
+ }
return *RI->second;
}
ModuleAnalysisManager::ResultConceptT *
-ModuleAnalysisManager::getCachedResultImpl(void *PassID, Module *M) const {
- ModuleAnalysisResultMapT::const_iterator RI = ModuleAnalysisResults.find(PassID);
- return RI == ModuleAnalysisResults.end() ? 0 : &*RI->second;
+ModuleAnalysisManager::getCachedResultImpl(void *PassID, Module &M) const {
+ ModuleAnalysisResultMapT::const_iterator RI =
+ ModuleAnalysisResults.find(PassID);
+ return RI == ModuleAnalysisResults.end() ? nullptr : &*RI->second;
}
-void ModuleAnalysisManager::invalidateImpl(void *PassID, Module *M) {
+void ModuleAnalysisManager::invalidateImpl(void *PassID, Module &M) {
+ if (DebugPM)
+ dbgs() << "Invalidating module analysis: " << lookupPass(PassID).name()
+ << "\n";
ModuleAnalysisResults.erase(PassID);
}
-void ModuleAnalysisManager::invalidateImpl(Module *M,
- const PreservedAnalyses &PA) {
+PreservedAnalyses ModuleAnalysisManager::invalidateImpl(Module &M,
+ PreservedAnalyses PA) {
+ // Short circuit for a common case of all analyses being preserved.
+ if (PA.areAllPreserved())
+ return std::move(PA);
+
+ if (DebugPM)
+ dbgs() << "Invalidating all non-preserved analyses for module: "
+ << M.getModuleIdentifier() << "\n";
+
// FIXME: This is a total hack based on the fact that erasure doesn't
// invalidate iteration for DenseMap.
for (ModuleAnalysisResultMapT::iterator I = ModuleAnalysisResults.begin(),
E = ModuleAnalysisResults.end();
- I != E; ++I)
- if (I->second->invalidate(M, PA))
+ I != E; ++I) {
+ void *PassID = I->first;
+
+ // Pass the invalidation down to the pass itself to see if it thinks it is
+ // necessary. The analysis pass can return false if no action on the part
+ // of the analysis manager is required for this invalidation event.
+ if (I->second->invalidate(M, PA)) {
+ if (DebugPM)
+ dbgs() << "Invalidating module analysis: "
+ << lookupPass(PassID).name() << "\n";
+
ModuleAnalysisResults.erase(I);
+ }
+
+ // After handling each pass, we mark it as preserved. Once we've
+ // invalidated any stale results, the rest of the system is allowed to
+ // start preserving this analysis again.
+ PA.preserve(PassID);
+ }
+
+ return std::move(PA);
}
-PreservedAnalyses FunctionPassManager::run(Function *F, FunctionAnalysisManager *AM) {
+PreservedAnalyses FunctionPassManager::run(Function &F,
+ FunctionAnalysisManager *AM) {
PreservedAnalyses PA = PreservedAnalyses::all();
if (DebugPM)
dbgs() << "Running function pass: " << Passes[Idx]->name() << "\n";
PreservedAnalyses PassPA = Passes[Idx]->run(F, AM);
+
+ // If we have an active analysis manager at this level we want to ensure we
+ // update it as each pass runs and potentially invalidates analyses. We
+ // also update the preserved set of analyses based on what analyses we have
+ // already handled the invalidation for here and don't need to invalidate
+ // when finished.
if (AM)
- AM->invalidate(F, PassPA);
+ PassPA = AM->invalidate(F, std::move(PassPA));
+
+ // Finally, we intersect the final preserved analyses to compute the
+ // aggregate preserved set for this pass manager.
PA.intersect(std::move(PassPA));
+
+ F.getContext().yield();
}
if (DebugPM)
}
FunctionAnalysisManager::ResultConceptT &
-FunctionAnalysisManager::getResultImpl(void *PassID, Function *F) {
+FunctionAnalysisManager::getResultImpl(void *PassID, Function &F) {
FunctionAnalysisResultMapT::iterator RI;
bool Inserted;
- llvm::tie(RI, Inserted) = FunctionAnalysisResults.insert(std::make_pair(
- std::make_pair(PassID, F), FunctionAnalysisResultListT::iterator()));
+ std::tie(RI, Inserted) = FunctionAnalysisResults.insert(std::make_pair(
+ std::make_pair(PassID, &F), FunctionAnalysisResultListT::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) {
- FunctionAnalysisResultListT &ResultList = FunctionAnalysisResultLists[F];
- ResultList.push_back(std::make_pair(PassID, lookupPass(PassID).run(F, this)));
- RI->second = llvm::prior(ResultList.end());
+ auto &P = lookupPass(PassID);
+ if (DebugPM)
+ dbgs() << "Running function analysis: " << P.name() << "\n";
+ FunctionAnalysisResultListT &ResultList = FunctionAnalysisResultLists[&F];
+ ResultList.emplace_back(PassID, P.run(F, this));
+ RI->second = std::prev(ResultList.end());
}
return *RI->second->second;
}
FunctionAnalysisManager::ResultConceptT *
-FunctionAnalysisManager::getCachedResultImpl(void *PassID, Function *F) const {
+FunctionAnalysisManager::getCachedResultImpl(void *PassID, Function &F) const {
FunctionAnalysisResultMapT::const_iterator RI =
- FunctionAnalysisResults.find(std::make_pair(PassID, F));
- return RI == FunctionAnalysisResults.end() ? 0 : &*RI->second->second;
+ FunctionAnalysisResults.find(std::make_pair(PassID, &F));
+ return RI == FunctionAnalysisResults.end() ? nullptr : &*RI->second->second;
}
-void FunctionAnalysisManager::invalidateImpl(void *PassID, Function *F) {
+void FunctionAnalysisManager::invalidateImpl(void *PassID, Function &F) {
FunctionAnalysisResultMapT::iterator RI =
- FunctionAnalysisResults.find(std::make_pair(PassID, F));
+ FunctionAnalysisResults.find(std::make_pair(PassID, &F));
if (RI == FunctionAnalysisResults.end())
return;
- FunctionAnalysisResultLists[F].erase(RI->second);
+ if (DebugPM)
+ dbgs() << "Invalidating function analysis: " << lookupPass(PassID).name()
+ << "\n";
+ FunctionAnalysisResultLists[&F].erase(RI->second);
+ FunctionAnalysisResults.erase(RI);
}
-void FunctionAnalysisManager::invalidateImpl(Function *F,
- const PreservedAnalyses &PA) {
+PreservedAnalyses
+FunctionAnalysisManager::invalidateImpl(Function &F, PreservedAnalyses PA) {
+ // Short circuit for a common case of all analyses being preserved.
+ if (PA.areAllPreserved())
+ return std::move(PA);
+
+ if (DebugPM)
+ dbgs() << "Invalidating all non-preserved analyses for function: "
+ << F.getName() << "\n";
+
// Clear all the invalidated results associated specifically with this
// function.
SmallVector<void *, 8> InvalidatedPassIDs;
- FunctionAnalysisResultListT &ResultsList = FunctionAnalysisResultLists[F];
+ FunctionAnalysisResultListT &ResultsList = FunctionAnalysisResultLists[&F];
for (FunctionAnalysisResultListT::iterator I = ResultsList.begin(),
E = ResultsList.end();
- I != E;)
+ I != E;) {
+ void *PassID = I->first;
+
+ // Pass the invalidation down to the pass itself to see if it thinks it is
+ // necessary. The analysis pass can return false if no action on the part
+ // of the analysis manager is required for this invalidation event.
if (I->second->invalidate(F, PA)) {
+ if (DebugPM)
+ dbgs() << "Invalidating function analysis: "
+ << lookupPass(PassID).name() << "\n";
+
InvalidatedPassIDs.push_back(I->first);
I = ResultsList.erase(I);
} else {
++I;
}
+
+ // After handling each pass, we mark it as preserved. Once we've
+ // invalidated any stale results, the rest of the system is allowed to
+ // start preserving this analysis again.
+ PA.preserve(PassID);
+ }
while (!InvalidatedPassIDs.empty())
FunctionAnalysisResults.erase(
- std::make_pair(InvalidatedPassIDs.pop_back_val(), F));
+ std::make_pair(InvalidatedPassIDs.pop_back_val(), &F));
+ if (ResultsList.empty())
+ FunctionAnalysisResultLists.erase(&F);
+
+ return std::move(PA);
}
char FunctionAnalysisManagerModuleProxy::PassID;
FunctionAnalysisManagerModuleProxy::Result
-FunctionAnalysisManagerModuleProxy::run(Module *M) {
- assert(FAM.empty() && "Function analyses ran prior to the module proxy!");
- return Result(FAM);
+FunctionAnalysisManagerModuleProxy::run(Module &M) {
+ assert(FAM->empty() && "Function analyses ran prior to the module proxy!");
+ return Result(*FAM);
}
FunctionAnalysisManagerModuleProxy::Result::~Result() {
// Clear out the analysis manager if we're being destroyed -- it means we
// didn't even see an invalidate call when we got invalidated.
- FAM.clear();
+ FAM->clear();
}
bool FunctionAnalysisManagerModuleProxy::Result::invalidate(
- Module *M, const PreservedAnalyses &PA) {
+ Module &M, const PreservedAnalyses &PA) {
// If this proxy isn't marked as preserved, then we can't even invalidate
// individual function analyses, there may be an invalid set of Function
// objects in the cache making it impossible to incrementally preserve them.
// Just clear the entire manager.
if (!PA.preserved(ID()))
- FAM.clear();
+ FAM->clear();
// Return false to indicate that this result is still a valid proxy.
return false;
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