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Solanki! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53008 91177308-0d34-0410-b5e6-96231b3b80d8
213 lines
5.9 KiB
C++
213 lines
5.9 KiB
C++
//===-- CollectorMetadata.cpp - Garbage collector metadata ----------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the CollectorMetadata and CollectorModuleMetadata
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// classes.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/CollectorMetadata.h"
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#include "llvm/CodeGen/Collector.h"
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#include "llvm/CodeGen/Collectors.h"
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#include "llvm/CodeGen/MachineFrameInfo.h"
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#include "llvm/Pass.h"
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#include "llvm/CodeGen/Passes.h"
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#include "llvm/Function.h"
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#include "llvm/Support/Compiler.h"
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using namespace llvm;
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namespace {
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class VISIBILITY_HIDDEN Printer : public FunctionPass {
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static char ID;
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std::ostream &OS;
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public:
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explicit Printer(std::ostream &OS = *cerr);
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const char *getPassName() const;
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void getAnalysisUsage(AnalysisUsage &AU) const;
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bool runOnFunction(Function &F);
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};
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class VISIBILITY_HIDDEN Deleter : public FunctionPass {
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static char ID;
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public:
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Deleter();
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const char *getPassName() const;
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void getAnalysisUsage(AnalysisUsage &AU) const;
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bool runOnFunction(Function &F);
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bool doFinalization(Module &M);
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};
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}
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static RegisterPass<CollectorModuleMetadata>
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X("collector-metadata", "Create Garbage Collector Module Metadata");
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// -----------------------------------------------------------------------------
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CollectorMetadata::CollectorMetadata(const Function &F, Collector &C)
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: F(F), C(C), FrameSize(~0LL) {}
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CollectorMetadata::~CollectorMetadata() {}
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// -----------------------------------------------------------------------------
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char CollectorModuleMetadata::ID = 0;
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CollectorModuleMetadata::CollectorModuleMetadata()
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: ImmutablePass((intptr_t)&ID) {}
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CollectorModuleMetadata::~CollectorModuleMetadata() {
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clear();
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}
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Collector *CollectorModuleMetadata::
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getOrCreateCollector(const Module *M, const std::string &Name) {
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const char *Start = Name.c_str();
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collector_map_type::iterator NMI = NameMap.find(Start, Start + Name.size());
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if (NMI != NameMap.end())
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return NMI->getValue();
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for (CollectorRegistry::iterator I = CollectorRegistry::begin(),
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E = CollectorRegistry::end(); I != E; ++I) {
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if (strcmp(Start, I->getName()) == 0) {
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Collector *C = I->instantiate();
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C->M = M;
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C->Name = Name;
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NameMap.GetOrCreateValue(Start, Start + Name.size()).setValue(C);
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Collectors.push_back(C);
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return C;
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}
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}
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cerr << "unsupported collector: " << Name << "\n";
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abort();
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}
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CollectorMetadata &CollectorModuleMetadata::get(const Function &F) {
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assert(F.hasCollector());
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function_map_type::iterator I = Map.find(&F);
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if (I != Map.end())
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return *I->second;
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Collector *C = getOrCreateCollector(F.getParent(), F.getCollector());
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CollectorMetadata *MD = C->insertFunctionMetadata(F);
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Map[&F] = MD;
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return *MD;
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}
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void CollectorModuleMetadata::clear() {
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Map.clear();
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NameMap.clear();
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for (iterator I = begin(), E = end(); I != E; ++I)
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delete *I;
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Collectors.clear();
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}
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// -----------------------------------------------------------------------------
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char Printer::ID = 0;
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FunctionPass *llvm::createCollectorMetadataPrinter(std::ostream &OS) {
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return new Printer(OS);
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}
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Printer::Printer(std::ostream &OS)
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: FunctionPass(intptr_t(&ID)), OS(OS) {}
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const char *Printer::getPassName() const {
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return "Print Garbage Collector Information";
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}
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void Printer::getAnalysisUsage(AnalysisUsage &AU) const {
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FunctionPass::getAnalysisUsage(AU);
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AU.setPreservesAll();
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AU.addRequired<CollectorModuleMetadata>();
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}
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static const char *DescKind(GC::PointKind Kind) {
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switch (Kind) {
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default: assert(0 && "Unknown GC point kind");
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case GC::Loop: return "loop";
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case GC::Return: return "return";
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case GC::PreCall: return "pre-call";
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case GC::PostCall: return "post-call";
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}
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}
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bool Printer::runOnFunction(Function &F) {
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if (F.hasCollector()) {
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CollectorMetadata *FD = &getAnalysis<CollectorModuleMetadata>().get(F);
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OS << "GC roots for " << FD->getFunction().getNameStart() << ":\n";
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for (CollectorMetadata::roots_iterator RI = FD->roots_begin(),
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RE = FD->roots_end();
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RI != RE; ++RI)
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OS << "\t" << RI->Num << "\t" << RI->StackOffset << "[sp]\n";
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OS << "GC safe points for " << FD->getFunction().getNameStart() << ":\n";
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for (CollectorMetadata::iterator PI = FD->begin(),
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PE = FD->end(); PI != PE; ++PI) {
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OS << "\tlabel " << PI->Num << ": " << DescKind(PI->Kind) << ", live = {";
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for (CollectorMetadata::live_iterator RI = FD->live_begin(PI),
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RE = FD->live_end(PI);;) {
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OS << " " << RI->Num;
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if (++RI == RE)
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break;
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OS << ",";
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}
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OS << " }\n";
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}
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}
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return false;
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}
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// -----------------------------------------------------------------------------
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char Deleter::ID = 0;
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FunctionPass *llvm::createCollectorMetadataDeleter() {
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return new Deleter();
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}
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Deleter::Deleter() : FunctionPass(intptr_t(&ID)) {}
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const char *Deleter::getPassName() const {
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return "Delete Garbage Collector Information";
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}
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void Deleter::getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesAll();
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AU.addRequired<CollectorModuleMetadata>();
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}
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bool Deleter::runOnFunction(Function &MF) {
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return false;
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}
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bool Deleter::doFinalization(Module &M) {
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CollectorModuleMetadata *CMM = getAnalysisToUpdate<CollectorModuleMetadata>();
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assert(CMM && "Deleter didn't require CollectorModuleMetadata?!");
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CMM->clear();
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return false;
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}
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