#include "llvm/CodeGen/GCMetadata.h"
#include "llvm/CodeGen/GCStrategy.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
-#include "llvm/Pass.h"
#include "llvm/CodeGen/Passes.h"
-#include "llvm/Function.h"
-#include "llvm/Support/Compiler.h"
+#include "llvm/IR/Function.h"
+#include "llvm/MC/MCSymbol.h"
+#include "llvm/Pass.h"
+#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
-
+#include "llvm/Support/raw_ostream.h"
using namespace llvm;
namespace {
-
- class VISIBILITY_HIDDEN Printer : public FunctionPass {
- static char ID;
- std::ostream &OS;
-
- public:
- explicit Printer(std::ostream &OS = *cerr);
-
- const char *getPassName() const;
- void getAnalysisUsage(AnalysisUsage &AU) const;
-
- bool runOnFunction(Function &F);
- };
-
- class VISIBILITY_HIDDEN Deleter : public FunctionPass {
- static char ID;
-
- public:
- Deleter();
-
- const char *getPassName() const;
- void getAnalysisUsage(AnalysisUsage &AU) const;
-
- bool runOnFunction(Function &F);
- bool doFinalization(Module &M);
- };
-
+
+class Printer : public FunctionPass {
+ static char ID;
+ raw_ostream &OS;
+
+public:
+ explicit Printer(raw_ostream &OS) : FunctionPass(ID), OS(OS) {}
+
+ const char *getPassName() const override;
+ void getAnalysisUsage(AnalysisUsage &AU) const override;
+
+ bool runOnFunction(Function &F) override;
+ bool doFinalization(Module &M) override;
+};
}
-static RegisterPass<GCModuleInfo>
-X("collector-metadata", "Create Garbage Collector Module Metadata");
+INITIALIZE_PASS(GCModuleInfo, "collector-metadata",
+ "Create Garbage Collector Module Metadata", false, false)
// -----------------------------------------------------------------------------
GCFunctionInfo::GCFunctionInfo(const Function &F, GCStrategy &S)
- : F(F), S(S), FrameSize(~0LL) {}
+ : F(F), S(S), FrameSize(~0LL) {}
GCFunctionInfo::~GCFunctionInfo() {}
char GCModuleInfo::ID = 0;
-GCModuleInfo::GCModuleInfo()
- : ImmutablePass(&ID) {}
-
-GCModuleInfo::~GCModuleInfo() {
- clear();
-}
-
-GCStrategy *GCModuleInfo::getOrCreateStrategy(const Module *M,
- const std::string &Name) {
- strategy_map_type::iterator NMI = StrategyMap.find(Name);
- if (NMI != StrategyMap.end())
- return NMI->getValue();
-
- for (GCRegistry::iterator I = GCRegistry::begin(),
- E = GCRegistry::end(); I != E; ++I) {
- if (Name == I->getName()) {
- GCStrategy *S = I->instantiate();
- S->M = M;
- S->Name = Name;
- StrategyMap.GetOrCreateValue(Name).setValue(S);
- StrategyList.push_back(S);
- return S;
- }
- }
-
- cerr << "unsupported GC: " << Name << "\n";
- llvm_unreachable(0);
+GCModuleInfo::GCModuleInfo() : ImmutablePass(ID) {
+ initializeGCModuleInfoPass(*PassRegistry::getPassRegistry());
}
GCFunctionInfo &GCModuleInfo::getFunctionInfo(const Function &F) {
assert(!F.isDeclaration() && "Can only get GCFunctionInfo for a definition!");
assert(F.hasGC());
-
+
finfo_map_type::iterator I = FInfoMap.find(&F);
if (I != FInfoMap.end())
return *I->second;
-
- GCStrategy *S = getOrCreateStrategy(F.getParent(), F.getGC());
- GCFunctionInfo *GFI = S->insertFunctionInfo(F);
+
+ GCStrategy *S = getGCStrategy(F.getGC());
+ Functions.push_back(make_unique<GCFunctionInfo>(F, *S));
+ GCFunctionInfo *GFI = Functions.back().get();
FInfoMap[&F] = GFI;
return *GFI;
}
void GCModuleInfo::clear() {
+ Functions.clear();
FInfoMap.clear();
- StrategyMap.clear();
-
- for (iterator I = begin(), E = end(); I != E; ++I)
- delete *I;
- StrategyList.clear();
+ GCStrategyList.clear();
}
// -----------------------------------------------------------------------------
char Printer::ID = 0;
-FunctionPass *llvm::createGCInfoPrinter(std::ostream &OS) {
+FunctionPass *llvm::createGCInfoPrinter(raw_ostream &OS) {
return new Printer(OS);
}
-Printer::Printer(std::ostream &OS)
- : FunctionPass(&ID), OS(OS) {}
-
const char *Printer::getPassName() const {
return "Print Garbage Collector Information";
}
static const char *DescKind(GC::PointKind Kind) {
switch (Kind) {
- default: llvm_unreachable("Unknown GC point kind");
- case GC::Loop: return "loop";
- case GC::Return: return "return";
- case GC::PreCall: return "pre-call";
- case GC::PostCall: return "post-call";
+ case GC::PreCall:
+ return "pre-call";
+ case GC::PostCall:
+ return "post-call";
}
+ llvm_unreachable("Invalid point kind");
}
bool Printer::runOnFunction(Function &F) {
- if (!F.hasGC()) {
- GCFunctionInfo *FD = &getAnalysis<GCModuleInfo>().getFunctionInfo(F);
-
- OS << "GC roots for " << FD->getFunction().getNameStr() << ":\n";
- for (GCFunctionInfo::roots_iterator RI = FD->roots_begin(),
- RE = FD->roots_end(); RI != RE; ++RI)
- OS << "\t" << RI->Num << "\t" << RI->StackOffset << "[sp]\n";
-
- OS << "GC safe points for " << FD->getFunction().getNameStr() << ":\n";
- for (GCFunctionInfo::iterator PI = FD->begin(),
- PE = FD->end(); PI != PE; ++PI) {
-
- OS << "\tlabel " << PI->Num << ": " << DescKind(PI->Kind) << ", live = {";
-
- for (GCFunctionInfo::live_iterator RI = FD->live_begin(PI),
- RE = FD->live_end(PI);;) {
- OS << " " << RI->Num;
- if (++RI == RE)
- break;
- OS << ",";
- }
-
- OS << " }\n";
+ if (F.hasGC())
+ return false;
+
+ GCFunctionInfo *FD = &getAnalysis<GCModuleInfo>().getFunctionInfo(F);
+
+ OS << "GC roots for " << FD->getFunction().getName() << ":\n";
+ for (GCFunctionInfo::roots_iterator RI = FD->roots_begin(),
+ RE = FD->roots_end();
+ RI != RE; ++RI)
+ OS << "\t" << RI->Num << "\t" << RI->StackOffset << "[sp]\n";
+
+ OS << "GC safe points for " << FD->getFunction().getName() << ":\n";
+ for (GCFunctionInfo::iterator PI = FD->begin(), PE = FD->end(); PI != PE;
+ ++PI) {
+
+ OS << "\t" << PI->Label->getName() << ": " << DescKind(PI->Kind)
+ << ", live = {";
+
+ for (GCFunctionInfo::live_iterator RI = FD->live_begin(PI),
+ RE = FD->live_end(PI);
+ ;) {
+ OS << " " << RI->Num;
+ if (++RI == RE)
+ break;
+ OS << ",";
}
- }
-
- return false;
-}
-
-// -----------------------------------------------------------------------------
-
-char Deleter::ID = 0;
-
-FunctionPass *llvm::createGCInfoDeleter() {
- return new Deleter();
-}
-
-Deleter::Deleter() : FunctionPass(&ID) {}
-
-const char *Deleter::getPassName() const {
- return "Delete Garbage Collector Information";
-}
-void Deleter::getAnalysisUsage(AnalysisUsage &AU) const {
- AU.setPreservesAll();
- AU.addRequired<GCModuleInfo>();
-}
+ OS << " }\n";
+ }
-bool Deleter::runOnFunction(Function &MF) {
return false;
}
-bool Deleter::doFinalization(Module &M) {
+bool Printer::doFinalization(Module &M) {
GCModuleInfo *GMI = getAnalysisIfAvailable<GCModuleInfo>();
- assert(GMI && "Deleter didn't require GCModuleInfo?!");
+ assert(GMI && "Printer didn't require GCModuleInfo?!");
GMI->clear();
return false;
}
+
+GCStrategy *GCModuleInfo::getGCStrategy(const StringRef Name) {
+ // TODO: Arguably, just doing a linear search would be faster for small N
+ auto NMI = GCStrategyMap.find(Name);
+ if (NMI != GCStrategyMap.end())
+ return NMI->getValue();
+
+ for (auto& Entry : GCRegistry::entries()) {
+ if (Name == Entry.getName()) {
+ std::unique_ptr<GCStrategy> S = Entry.instantiate();
+ S->Name = Name;
+ GCStrategyMap[Name] = S.get();
+ GCStrategyList.push_back(std::move(S));
+ return GCStrategyList.back().get();
+ }
+ }
+
+ if (GCRegistry::begin() == GCRegistry::end()) {
+ // In normal operation, the registry should not be empty. There should
+ // be the builtin GCs if nothing else. The most likely scenario here is
+ // that we got here without running the initializers used by the Registry
+ // itself and it's registration mechanism.
+ const std::string error = ("unsupported GC: " + Name).str() +
+ " (did you remember to link and initialize the CodeGen library?)";
+ report_fatal_error(error);
+ } else
+ report_fatal_error(std::string("unsupported GC: ") + Name);
+}
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