2008-08-17 20:44:35 +02:00
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//===-- GCMetadata.cpp - Garbage collector metadata -----------------------===//
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2007-09-28 00:18:46 +02:00
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//
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// The LLVM Compiler Infrastructure
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//
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2007-12-29 21:36:04 +01:00
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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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2007-09-28 00:18:46 +02:00
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//
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//===----------------------------------------------------------------------===//
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//
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2008-08-17 20:44:35 +02:00
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// This file implements the GCFunctionInfo class and GCModuleInfo pass.
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2007-09-28 00:18:46 +02:00
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//
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//===----------------------------------------------------------------------===//
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2008-08-17 14:56:54 +02:00
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#include "llvm/CodeGen/GCMetadata.h"
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2007-09-28 00:18:46 +02:00
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#include "llvm/CodeGen/MachineFrameInfo.h"
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2007-12-11 01:30:17 +01:00
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#include "llvm/CodeGen/Passes.h"
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2013-01-02 12:36:10 +01:00
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#include "llvm/IR/Function.h"
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2015-01-16 21:07:33 +01:00
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#include "llvm/IR/GCStrategy.h"
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2010-03-14 08:27:07 +01:00
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#include "llvm/MC/MCSymbol.h"
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2012-12-03 17:50:05 +01:00
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#include "llvm/Pass.h"
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2010-01-04 22:35:15 +01:00
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#include "llvm/Support/Debug.h"
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2009-07-11 15:10:19 +02:00
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#include "llvm/Support/ErrorHandling.h"
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2009-08-23 05:13:20 +02:00
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#include "llvm/Support/raw_ostream.h"
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2007-09-28 00:18:46 +02:00
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using namespace llvm;
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namespace {
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2009-10-25 07:33:48 +01:00
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class Printer : public FunctionPass {
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2007-09-28 00:18:46 +02:00
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static char ID;
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2009-08-23 05:13:20 +02:00
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raw_ostream &OS;
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2007-09-28 00:18:46 +02:00
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public:
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2010-08-06 20:33:48 +02:00
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explicit Printer(raw_ostream &OS) : FunctionPass(ID), OS(OS) {}
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2009-08-23 05:13:20 +02:00
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2014-03-07 10:26:03 +01:00
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const char *getPassName() const override;
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void getAnalysisUsage(AnalysisUsage &AU) const override;
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bool runOnFunction(Function &F) override;
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bool doFinalization(Module &M) override;
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2007-09-28 00:18:46 +02:00
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};
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2013-02-19 17:51:44 +01:00
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2007-09-28 00:18:46 +02:00
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}
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2010-07-22 00:09:45 +02:00
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INITIALIZE_PASS(GCModuleInfo, "collector-metadata",
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2010-10-08 00:25:06 +02:00
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"Create Garbage Collector Module Metadata", false, false)
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2008-05-13 02:00:25 +02:00
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2007-09-28 00:18:46 +02:00
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// -----------------------------------------------------------------------------
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2008-08-17 20:44:35 +02:00
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GCFunctionInfo::GCFunctionInfo(const Function &F, GCStrategy &S)
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: F(F), S(S), FrameSize(~0LL) {}
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2007-09-28 00:18:46 +02:00
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2008-08-17 20:44:35 +02:00
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GCFunctionInfo::~GCFunctionInfo() {}
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2007-09-28 00:18:46 +02:00
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// -----------------------------------------------------------------------------
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2008-08-17 20:44:35 +02:00
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char GCModuleInfo::ID = 0;
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2007-09-28 00:18:46 +02:00
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2008-08-17 20:44:35 +02:00
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GCModuleInfo::GCModuleInfo()
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2010-10-19 19:21:58 +02:00
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: ImmutablePass(ID) {
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initializeGCModuleInfoPass(*PassRegistry::getPassRegistry());
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}
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2007-09-28 00:18:46 +02:00
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2008-08-17 20:44:35 +02:00
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GCFunctionInfo &GCModuleInfo::getFunctionInfo(const Function &F) {
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2008-08-17 18:18:50 +02:00
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assert(!F.isDeclaration() && "Can only get GCFunctionInfo for a definition!");
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2008-08-17 20:44:35 +02:00
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assert(F.hasGC());
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2008-08-17 18:18:50 +02:00
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2008-08-17 20:44:35 +02:00
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finfo_map_type::iterator I = FInfoMap.find(&F);
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if (I != FInfoMap.end())
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2007-12-11 01:30:17 +01:00
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return *I->second;
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2008-08-17 20:44:35 +02:00
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2015-01-16 21:07:33 +01:00
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GCStrategy *S = F.getGCStrategy();
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if (!S) {
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std::string error = std::string("unsupported GC: ") + F.getGC();
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report_fatal_error(error);
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}
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// Save the fact this strategy is associated with this module. Note that
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// these are non-owning references, the GCStrategy remains owned by the
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// Context.
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StrategyList.push_back(S);
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2014-12-11 02:47:23 +01:00
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Functions.push_back(make_unique<GCFunctionInfo>(F, *S));
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GCFunctionInfo *GFI = Functions.back().get();
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2008-08-17 20:44:35 +02:00
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FInfoMap[&F] = GFI;
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return *GFI;
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2007-09-28 00:18:46 +02:00
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}
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2008-08-17 20:44:35 +02:00
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void GCModuleInfo::clear() {
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2014-12-11 02:47:23 +01:00
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Functions.clear();
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2008-08-17 20:44:35 +02:00
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FInfoMap.clear();
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StrategyList.clear();
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2007-09-28 00:18:46 +02:00
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}
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// -----------------------------------------------------------------------------
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char Printer::ID = 0;
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2009-08-23 05:13:20 +02:00
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FunctionPass *llvm::createGCInfoPrinter(raw_ostream &OS) {
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2007-09-28 00:18:46 +02:00
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return new Printer(OS);
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}
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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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2007-12-11 01:30:17 +01:00
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FunctionPass::getAnalysisUsage(AU);
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2007-09-28 00:18:46 +02:00
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AU.setPreservesAll();
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2008-08-17 20:44:35 +02:00
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AU.addRequired<GCModuleInfo>();
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2007-09-28 00:18:46 +02:00
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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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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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2012-01-10 19:08:01 +01:00
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llvm_unreachable("Invalid point kind");
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2007-09-28 00:18:46 +02:00
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}
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2007-12-11 01:30:17 +01:00
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bool Printer::runOnFunction(Function &F) {
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2010-03-14 08:27:07 +01:00
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if (F.hasGC()) return false;
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GCFunctionInfo *FD = &getAnalysis<GCModuleInfo>().getFunctionInfo(F);
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2011-11-15 17:27:03 +01:00
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OS << "GC roots for " << FD->getFunction().getName() << ":\n";
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2010-03-14 08:27:07 +01:00
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for (GCFunctionInfo::roots_iterator RI = FD->roots_begin(),
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RE = FD->roots_end(); RI != RE; ++RI)
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OS << "\t" << RI->Num << "\t" << RI->StackOffset << "[sp]\n";
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2011-11-15 17:27:03 +01:00
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OS << "GC safe points for " << FD->getFunction().getName() << ":\n";
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2010-03-14 08:27:07 +01:00
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for (GCFunctionInfo::iterator PI = FD->begin(),
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PE = FD->end(); PI != PE; ++PI) {
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2007-09-28 00:18:46 +02:00
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2010-03-14 08:27:07 +01:00
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OS << "\t" << PI->Label->getName() << ": "
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<< DescKind(PI->Kind) << ", live = {";
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2007-09-28 00:18:46 +02:00
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2010-03-14 08:27:07 +01:00
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for (GCFunctionInfo::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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2007-09-28 00:18:46 +02:00
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}
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2010-03-14 08:27:07 +01:00
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OS << " }\n";
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2007-09-28 00:18:46 +02:00
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}
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return false;
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}
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2013-02-19 17:51:44 +01:00
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bool Printer::doFinalization(Module &M) {
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2009-01-28 14:14:17 +01:00
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GCModuleInfo *GMI = getAnalysisIfAvailable<GCModuleInfo>();
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2013-02-19 17:51:44 +01:00
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assert(GMI && "Printer didn't require GCModuleInfo?!");
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2008-08-17 20:44:35 +02:00
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GMI->clear();
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2007-09-28 00:18:46 +02:00
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return false;
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}
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