X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FMachineFunction.cpp;h=d0773ff4575dcdb8766e75db7f1f31cb40e9fdaf;hb=f612ff6cfbf3a59842732f0280807c0714ab9025;hp=e6ae7dc22454d8ab5e0123ad608b8516f34b8e48;hpb=cb4596364369ea36ff5675eb12fc62d0c6f1f0dd;p=oota-llvm.git diff --git a/lib/CodeGen/MachineFunction.cpp b/lib/CodeGen/MachineFunction.cpp index e6ae7dc2245..d0773ff4575 100644 --- a/lib/CodeGen/MachineFunction.cpp +++ b/lib/CodeGen/MachineFunction.cpp @@ -19,6 +19,7 @@ #include "llvm/ADT/STLExtras.h" #include "llvm/Config/config.h" #include "llvm/CodeGen/MachineConstantPool.h" +#include "llvm/CodeGen/MachineFunction.h" #include "llvm/CodeGen/MachineFunctionPass.h" #include "llvm/CodeGen/MachineFrameInfo.h" #include "llvm/CodeGen/MachineInstr.h" @@ -32,89 +33,56 @@ #include "llvm/Support/Compiler.h" #include "llvm/Support/GraphWriter.h" #include "llvm/Support/raw_ostream.h" -#include -#include using namespace llvm; -bool MachineFunctionPass::runOnFunction(Function &F) { - // Do not codegen any 'available_externally' functions at all, they have - // definitions outside the translation unit. - if (F.hasAvailableExternallyLinkage()) - return false; - - return runOnMachineFunction(MachineFunction::get(&F)); -} - namespace { struct VISIBILITY_HIDDEN Printer : public MachineFunctionPass { static char ID; - std::ostream *OS; + raw_ostream &OS; const std::string Banner; - Printer (std::ostream *os, const std::string &banner) + Printer(raw_ostream &os, const std::string &banner) : MachineFunctionPass(&ID), OS(os), Banner(banner) {} const char *getPassName() const { return "MachineFunction Printer"; } virtual void getAnalysisUsage(AnalysisUsage &AU) const { AU.setPreservesAll(); + MachineFunctionPass::getAnalysisUsage(AU); } bool runOnMachineFunction(MachineFunction &MF) { - (*OS) << Banner; - MF.print (*OS); + OS << Banner; + MF.print(OS); return false; } }; char Printer::ID = 0; } -/// Returns a newly-created MachineFunction Printer pass. The default output -/// stream is std::cerr; the default banner is empty. +/// Returns a newly-created MachineFunction Printer pass. The default banner is +/// empty. /// -FunctionPass *llvm::createMachineFunctionPrinterPass(std::ostream *OS, +FunctionPass *llvm::createMachineFunctionPrinterPass(raw_ostream &OS, const std::string &Banner){ return new Printer(OS, Banner); } -namespace { - struct VISIBILITY_HIDDEN Deleter : public MachineFunctionPass { - static char ID; - Deleter() : MachineFunctionPass(&ID) {} - - const char *getPassName() const { return "Machine Code Deleter"; } - - bool runOnMachineFunction(MachineFunction &MF) { - // Delete the annotation from the function now. - MachineFunction::destruct(MF.getFunction()); - return true; - } - }; - char Deleter::ID = 0; -} - -/// MachineCodeDeletion Pass - This pass deletes all of the machine code for -/// the current function, which should happen after the function has been -/// emitted to a .s file or to memory. -FunctionPass *llvm::createMachineCodeDeleter() { - return new Deleter(); -} - - - //===---------------------------------------------------------------------===// // MachineFunction implementation //===---------------------------------------------------------------------===// +// Out of line virtual method. +MachineFunctionInfo::~MachineFunctionInfo() {} + void ilist_traits::deleteNode(MachineBasicBlock *MBB) { MBB->getParent()->DeleteMachineBasicBlock(MBB); } -MachineFunction::MachineFunction(const Function *F, +MachineFunction::MachineFunction(Function *F, const TargetMachine &TM) - : Annotation(AnnotationManager::getID("CodeGen::MachineCodeForFunction")), - Fn(F), Target(TM) { + : Fn(F), Target(TM) { if (TM.getRegisterInfo()) RegInfo = new (Allocator.Allocate()) MachineRegisterInfo(*TM.getRegisterInfo()); @@ -131,7 +99,8 @@ MachineFunction::MachineFunction(const Function *F, const TargetData &TD = *TM.getTargetData(); bool IsPic = TM.getRelocationModel() == Reloc::PIC_; unsigned EntrySize = IsPic ? 4 : TD.getPointerSize(); - unsigned TyAlignment = IsPic ? TD.getABITypeAlignment(Type::Int32Ty) + unsigned TyAlignment = IsPic ? + TD.getABITypeAlignment(Type::getInt32Ty(F->getContext())) : TD.getPointerABIAlignment(); JumpTableInfo = new (Allocator.Allocate()) MachineJumpTableInfo(EntrySize, TyAlignment); @@ -249,11 +218,11 @@ MachineFunction::DeleteMachineBasicBlock(MachineBasicBlock *MBB) { } void MachineFunction::dump() const { - print(*cerr.stream()); + print(errs()); } -void MachineFunction::print(std::ostream &OS) const { - OS << "# Machine code for " << Fn->getName () << "():\n"; +void MachineFunction::print(raw_ostream &OS) const { + OS << "# Machine code for " << Fn->getName() << "():\n"; // Print Frame Information FrameInfo->print(*this, OS); @@ -262,10 +231,7 @@ void MachineFunction::print(std::ostream &OS) const { JumpTableInfo->print(OS); // Print Constant Pool - { - raw_os_ostream OSS(OS); - ConstantPool->print(OSS); - } + ConstantPool->print(OS); const TargetRegisterInfo *TRI = getTarget().getRegisterInfo(); @@ -279,32 +245,32 @@ void MachineFunction::print(std::ostream &OS) const { OS << " Reg #" << I->first; if (I->second) - OS << " in VR#" << I->second << " "; + OS << " in VR#" << I->second << ' '; } - OS << "\n"; + OS << '\n'; } if (RegInfo && !RegInfo->liveout_empty()) { OS << "Live Outs:"; for (MachineRegisterInfo::liveout_iterator I = RegInfo->liveout_begin(), E = RegInfo->liveout_end(); I != E; ++I) if (TRI) - OS << " " << TRI->getName(*I); + OS << ' ' << TRI->getName(*I); else OS << " Reg #" << *I; - OS << "\n"; + OS << '\n'; } - for (const_iterator BB = begin(); BB != end(); ++BB) + for (const_iterator BB = begin(), E = end(); BB != E; ++BB) BB->print(OS); - OS << "\n# End machine code for " << Fn->getName () << "().\n\n"; + OS << "\n# End machine code for " << Fn->getName() << "().\n\n"; } namespace llvm { template<> struct DOTGraphTraits : public DefaultDOTGraphTraits { static std::string getGraphName(const MachineFunction *F) { - return "CFG for '" + F->getFunction()->getName() + "' function"; + return "CFG for '" + F->getFunction()->getNameStr() + "' function"; } static std::string getNodeLabel(const MachineBasicBlock *Node, @@ -312,17 +278,18 @@ namespace llvm { bool ShortNames) { if (ShortNames && Node->getBasicBlock() && !Node->getBasicBlock()->getName().empty()) - return Node->getBasicBlock()->getName() + ":"; - - std::ostringstream Out; - if (ShortNames) { - Out << Node->getNumber() << ':'; - return Out.str(); + return Node->getBasicBlock()->getNameStr() + ":"; + + std::string OutStr; + { + raw_string_ostream OSS(OutStr); + + if (ShortNames) + OSS << Node->getNumber() << ':'; + else + Node->print(OSS); } - Node->print(Out); - - std::string OutStr = Out.str(); if (OutStr[0] == '\n') OutStr.erase(OutStr.begin()); // Process string output to make it nicer... @@ -339,59 +306,23 @@ namespace llvm { void MachineFunction::viewCFG() const { #ifndef NDEBUG - ViewGraph(this, "mf" + getFunction()->getName()); + ViewGraph(this, "mf" + getFunction()->getNameStr()); #else - cerr << "SelectionDAG::viewGraph is only available in debug builds on " - << "systems with Graphviz or gv!\n"; + errs() << "SelectionDAG::viewGraph is only available in debug builds on " + << "systems with Graphviz or gv!\n"; #endif // NDEBUG } void MachineFunction::viewCFGOnly() const { #ifndef NDEBUG - ViewGraph(this, "mf" + getFunction()->getName(), true); + ViewGraph(this, "mf" + getFunction()->getNameStr(), true); #else - cerr << "SelectionDAG::viewGraph is only available in debug builds on " - << "systems with Graphviz or gv!\n"; + errs() << "SelectionDAG::viewGraph is only available in debug builds on " + << "systems with Graphviz or gv!\n"; #endif // NDEBUG } -// The next two methods are used to construct and to retrieve -// the MachineCodeForFunction object for the given function. -// construct() -- Allocates and initializes for a given function and target -// get() -- Returns a handle to the object. -// This should not be called before "construct()" -// for a given Function. -// -MachineFunction& -MachineFunction::construct(const Function *Fn, const TargetMachine &Tar) -{ - AnnotationID MF_AID = - AnnotationManager::getID("CodeGen::MachineCodeForFunction"); - assert(Fn->getAnnotation(MF_AID) == 0 && - "Object already exists for this function!"); - MachineFunction* mcInfo = new MachineFunction(Fn, Tar); - Fn->addAnnotation(mcInfo); - return *mcInfo; -} - -void MachineFunction::destruct(const Function *Fn) { - AnnotationID MF_AID = - AnnotationManager::getID("CodeGen::MachineCodeForFunction"); - bool Deleted = Fn->deleteAnnotation(MF_AID); - assert(Deleted && "Machine code did not exist for function!"); - Deleted = Deleted; // silence warning when no assertions. -} - -MachineFunction& MachineFunction::get(const Function *F) -{ - AnnotationID MF_AID = - AnnotationManager::getID("CodeGen::MachineCodeForFunction"); - MachineFunction *mc = (MachineFunction*)F->getAnnotation(MF_AID); - assert(mc && "Call construct() method first to allocate the object"); - return *mc; -} - /// addLiveIn - Add the specified physical register as a live-in value and /// create a corresponding virtual register for it. unsigned MachineFunction::addLiveIn(unsigned PReg, @@ -405,7 +336,7 @@ unsigned MachineFunction::addLiveIn(unsigned PReg, /// getOrCreateDebugLocID - Look up the DebugLocTuple index with the given /// source file, line, and column. If none currently exists, create a new /// DebugLocTuple, and insert it into the DebugIdMap. -unsigned MachineFunction::getOrCreateDebugLocID(GlobalVariable *CompileUnit, +unsigned MachineFunction::getOrCreateDebugLocID(MDNode *CompileUnit, unsigned Line, unsigned Col) { DebugLocTuple Tuple(CompileUnit, Line, Col); DenseMap::iterator II @@ -444,7 +375,38 @@ int MachineFrameInfo::CreateFixedObject(uint64_t Size, int64_t SPOffset, } -void MachineFrameInfo::print(const MachineFunction &MF, std::ostream &OS) const{ +BitVector +MachineFrameInfo::getPristineRegs(const MachineBasicBlock *MBB) const { + assert(MBB && "MBB must be valid"); + const MachineFunction *MF = MBB->getParent(); + assert(MF && "MBB must be part of a MachineFunction"); + const TargetMachine &TM = MF->getTarget(); + const TargetRegisterInfo *TRI = TM.getRegisterInfo(); + BitVector BV(TRI->getNumRegs()); + + // Before CSI is calculated, no registers are considered pristine. They can be + // freely used and PEI will make sure they are saved. + if (!isCalleeSavedInfoValid()) + return BV; + + for (const unsigned *CSR = TRI->getCalleeSavedRegs(MF); CSR && *CSR; ++CSR) + BV.set(*CSR); + + // The entry MBB always has all CSRs pristine. + if (MBB == &MF->front()) + return BV; + + // On other MBBs the saved CSRs are not pristine. + const std::vector &CSI = getCalleeSavedInfo(); + for (std::vector::const_iterator I = CSI.begin(), + E = CSI.end(); I != E; ++I) + BV.reset(I->getReg()); + + return BV; +} + + +void MachineFrameInfo::print(const MachineFunction &MF, raw_ostream &OS) const{ const TargetFrameInfo *FI = MF.getTarget().getFrameInfo(); int ValOffset = (FI ? FI->getOffsetOfLocalArea() : 0); @@ -481,10 +443,9 @@ void MachineFrameInfo::print(const MachineFunction &MF, std::ostream &OS) const{ } void MachineFrameInfo::dump(const MachineFunction &MF) const { - print(MF, *cerr.stream()); + print(MF, errs()); } - //===----------------------------------------------------------------------===// // MachineJumpTableInfo implementation //===----------------------------------------------------------------------===// @@ -521,7 +482,7 @@ MachineJumpTableInfo::ReplaceMBBInJumpTables(MachineBasicBlock *Old, return MadeChange; } -void MachineJumpTableInfo::print(std::ostream &OS) const { +void MachineJumpTableInfo::print(raw_ostream &OS) const { // FIXME: this is lame, maybe we could print out the MBB numbers or something // like {1, 2, 4, 5, 3, 0} for (unsigned i = 0, e = JumpTables.size(); i != e; ++i) { @@ -530,7 +491,7 @@ void MachineJumpTableInfo::print(std::ostream &OS) const { } } -void MachineJumpTableInfo::dump() const { print(*cerr.stream()); } +void MachineJumpTableInfo::dump() const { print(errs()); } //===----------------------------------------------------------------------===// @@ -544,22 +505,10 @@ const Type *MachineConstantPoolEntry::getType() const { } -unsigned MachineConstantPoolEntry::getRelocatationInfo() const { +unsigned MachineConstantPoolEntry::getRelocationInfo() const { if (isMachineConstantPoolEntry()) - return Val.MachineCPVal->getRelocatationInfo(); - - // FIXME: This API sucks. - - // If no relocations, return 0. - if (!Val.ConstVal->ContainsRelocations()) - return 0; - - // If it contains no global relocations, return 1. - if (!Val.ConstVal->ContainsRelocations(Reloc::Global)) - return 1; - - // Otherwise, it has general relocations. - return 2; + return Val.MachineCPVal->getRelocationInfo(); + return Val.ConstVal->getRelocationInfo(); } MachineConstantPool::~MachineConstantPool() {