X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FMachineFunction.cpp;h=cf7f39140b8663e25daf837a8973b3001d2b7384;hb=d8e880c670699bd56dc3968647a4b963793d201d;hp=4453be80c1c0aa21d405e80734304a371604a0a3;hpb=a401b1e1c5eb9563617db8a2477b4c5f8b239521;p=oota-llvm.git diff --git a/lib/CodeGen/MachineFunction.cpp b/lib/CodeGen/MachineFunction.cpp index 4453be80c1c..cf7f39140b8 100644 --- a/lib/CodeGen/MachineFunction.cpp +++ b/lib/CodeGen/MachineFunction.cpp @@ -2,8 +2,8 @@ // // The LLVM Compiler Infrastructure // -// This file was developed by the LLVM research group and is distributed under -// the University of Illinois Open Source License. See LICENSE.TXT for details. +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // @@ -14,22 +14,21 @@ //===----------------------------------------------------------------------===// #include "llvm/DerivedTypes.h" +#include "llvm/CodeGen/MachineConstantPool.h" #include "llvm/CodeGen/MachineFunctionPass.h" -#include "llvm/CodeGen/MachineInstr.h" -#include "llvm/CodeGen/SSARegMap.h" #include "llvm/CodeGen/MachineFrameInfo.h" -#include "llvm/CodeGen/MachineConstantPool.h" +#include "llvm/CodeGen/MachineInstr.h" #include "llvm/CodeGen/MachineJumpTableInfo.h" +#include "llvm/CodeGen/MachineRegisterInfo.h" #include "llvm/CodeGen/Passes.h" #include "llvm/Target/TargetData.h" -#include "llvm/Target/TargetLowering.h" #include "llvm/Target/TargetMachine.h" #include "llvm/Target/TargetFrameInfo.h" #include "llvm/Function.h" #include "llvm/Instructions.h" #include "llvm/Support/Compiler.h" #include "llvm/Support/GraphWriter.h" -#include "llvm/Support/LeakDetector.h" +#include "llvm/Support/raw_ostream.h" #include "llvm/ADT/STLExtras.h" #include "llvm/Config/config.h" #include @@ -44,11 +43,13 @@ void MachineFunctionPass::virtfn() {} namespace { struct VISIBILITY_HIDDEN Printer : public MachineFunctionPass { + static char ID; + std::ostream *OS; const std::string Banner; - Printer (std::ostream *_OS, const std::string &_Banner) : - OS (_OS), Banner (_Banner) { } + Printer (std::ostream *os, const std::string &banner) + : MachineFunctionPass(&ID), OS(os), Banner(banner) {} const char *getPassName() const { return "MachineFunction Printer"; } @@ -62,6 +63,7 @@ namespace { return false; } }; + char Printer::ID = 0; } /// Returns a newly-created MachineFunction Printer pass. The default output @@ -74,6 +76,9 @@ FunctionPass *llvm::createMachineFunctionPrinterPass(std::ostream *OS, 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) { @@ -82,6 +87,7 @@ namespace { return true; } }; + char Deleter::ID = 0; } /// MachineCodeDeletion Pass - This pass deletes all of the machine code for @@ -97,28 +103,23 @@ FunctionPass *llvm::createMachineCodeDeleter() { // MachineFunction implementation //===---------------------------------------------------------------------===// -MachineBasicBlock* ilist_traits::createSentinel() { - MachineBasicBlock* dummy = new MachineBasicBlock(); - LeakDetector::removeGarbageObject(dummy); - return dummy; -} - -void ilist_traits::transferNodesFromList( - iplist >& toList, - ilist_iterator first, - ilist_iterator last) { - if (Parent != toList.Parent) - for (; first != last; ++first) - first->Parent = toList.Parent; +void ilist_traits::deleteNode(MachineBasicBlock *MBB) { + MBB->getParent()->DeleteMachineBasicBlock(MBB); } MachineFunction::MachineFunction(const Function *F, const TargetMachine &TM) - : Annotation(MF_AID), Fn(F), Target(TM), UsedPhysRegs(0) { - SSARegMapping = new SSARegMap(); + : Annotation(MF_AID), Fn(F), Target(TM) { + if (TM.getRegisterInfo()) + RegInfo = new (Allocator.Allocate()) + MachineRegisterInfo(*TM.getRegisterInfo()); + else + RegInfo = 0; MFInfo = 0; - FrameInfo = new MachineFrameInfo(); - ConstantPool = new MachineConstantPool(TM.getTargetData()); + FrameInfo = new (Allocator.Allocate()) + MachineFrameInfo(*TM.getFrameInfo()); + ConstantPool = new (Allocator.Allocate()) + MachineConstantPool(TM.getTargetData()); // Set up jump table. const TargetData &TD = *TM.getTargetData(); @@ -126,19 +127,22 @@ MachineFunction::MachineFunction(const Function *F, unsigned EntrySize = IsPic ? 4 : TD.getPointerSize(); unsigned Alignment = IsPic ? TD.getABITypeAlignment(Type::Int32Ty) : TD.getPointerABIAlignment(); - JumpTableInfo = new MachineJumpTableInfo(EntrySize, Alignment); - - BasicBlocks.Parent = this; + JumpTableInfo = new (Allocator.Allocate()) + MachineJumpTableInfo(EntrySize, Alignment); } MachineFunction::~MachineFunction() { BasicBlocks.clear(); - delete SSARegMapping; - delete MFInfo; - delete FrameInfo; - delete ConstantPool; - delete JumpTableInfo; - delete[] UsedPhysRegs; + InstructionRecycler.clear(Allocator); + BasicBlockRecycler.clear(Allocator); + if (RegInfo) + RegInfo->~MachineRegisterInfo(); Allocator.Deallocate(RegInfo); + if (MFInfo) { + MFInfo->~MachineFunctionInfo(); Allocator.Deallocate(MFInfo); + } + FrameInfo->~MachineFrameInfo(); Allocator.Deallocate(FrameInfo); + ConstantPool->~MachineConstantPool(); Allocator.Deallocate(ConstantPool); + JumpTableInfo->~MachineJumpTableInfo(); Allocator.Deallocate(JumpTableInfo); } @@ -184,28 +188,84 @@ void MachineFunction::RenumberBlocks(MachineBasicBlock *MBB) { MBBNumbering.resize(BlockNo); } +/// CreateMachineInstr - Allocate a new MachineInstr. Use this instead +/// of `new MachineInstr'. +/// +MachineInstr * +MachineFunction::CreateMachineInstr(const TargetInstrDesc &TID, + DebugLoc DL, bool NoImp) { + return new (InstructionRecycler.Allocate(Allocator)) + MachineInstr(TID, DL, NoImp); +} -void MachineFunction::dump() const { print(*cerr.stream()); } +/// CloneMachineInstr - Create a new MachineInstr which is a copy of the +/// 'Orig' instruction, identical in all ways except the the instruction +/// has no parent, prev, or next. +/// +MachineInstr * +MachineFunction::CloneMachineInstr(const MachineInstr *Orig) { + return new (InstructionRecycler.Allocate(Allocator)) + MachineInstr(*this, *Orig); +} + +/// DeleteMachineInstr - Delete the given MachineInstr. +/// +void +MachineFunction::DeleteMachineInstr(MachineInstr *MI) { + // Clear the instructions memoperands. This must be done manually because + // the instruction's parent pointer is now null, so it can't properly + // deallocate them on its own. + MI->clearMemOperands(*this); + + MI->~MachineInstr(); + InstructionRecycler.Deallocate(Allocator, MI); +} + +/// CreateMachineBasicBlock - Allocate a new MachineBasicBlock. Use this +/// instead of `new MachineBasicBlock'. +/// +MachineBasicBlock * +MachineFunction::CreateMachineBasicBlock(const BasicBlock *bb) { + return new (BasicBlockRecycler.Allocate(Allocator)) + MachineBasicBlock(*this, bb); +} + +/// DeleteMachineBasicBlock - Delete the given MachineBasicBlock. +/// +void +MachineFunction::DeleteMachineBasicBlock(MachineBasicBlock *MBB) { + assert(MBB->getParent() == this && "MBB parent mismatch!"); + MBB->~MachineBasicBlock(); + BasicBlockRecycler.Deallocate(Allocator, MBB); +} + +void MachineFunction::dump() const { + print(*cerr.stream()); +} void MachineFunction::print(std::ostream &OS) const { OS << "# Machine code for " << Fn->getName () << "():\n"; // Print Frame Information - getFrameInfo()->print(*this, OS); + FrameInfo->print(*this, OS); // Print JumpTable Information - getJumpTableInfo()->print(OS); + JumpTableInfo->print(OS); // Print Constant Pool - getConstantPool()->print(OS); + { + raw_os_ostream OSS(OS); + ConstantPool->print(OSS); + } - const MRegisterInfo *MRI = getTarget().getRegisterInfo(); + const TargetRegisterInfo *TRI = getTarget().getRegisterInfo(); - if (livein_begin() != livein_end()) { + if (RegInfo && !RegInfo->livein_empty()) { OS << "Live Ins:"; - for (livein_iterator I = livein_begin(), E = livein_end(); I != E; ++I) { - if (MRI) - OS << " " << MRI->getName(I->first); + for (MachineRegisterInfo::livein_iterator + I = RegInfo->livein_begin(), E = RegInfo->livein_end(); I != E; ++I) { + if (TRI) + OS << " " << TRI->getName(I->first); else OS << " Reg #" << I->first; @@ -214,11 +274,12 @@ void MachineFunction::print(std::ostream &OS) const { } OS << "\n"; } - if (liveout_begin() != liveout_end()) { + if (RegInfo && !RegInfo->liveout_empty()) { OS << "Live Outs:"; - for (liveout_iterator I = liveout_begin(), E = liveout_end(); I != E; ++I) - if (MRI) - OS << " " << MRI->getName(*I); + for (MachineRegisterInfo::liveout_iterator + I = RegInfo->liveout_begin(), E = RegInfo->liveout_end(); I != E; ++I) + if (TRI) + OS << " " << TRI->getName(*I); else OS << " Reg #" << *I; OS << "\n"; @@ -307,7 +368,8 @@ MachineFunction::construct(const Function *Fn, const TargetMachine &Tar) void MachineFunction::destruct(const Function *Fn) { bool Deleted = Fn->deleteAnnotation(MF_AID); - assert(Deleted && "Machine code did not exist for function!"); + assert(Deleted && "Machine code did not exist for function!"); + Deleted = Deleted; // silence warning when no assertions. } MachineFunction& MachineFunction::get(const Function *F) @@ -317,21 +379,59 @@ MachineFunction& MachineFunction::get(const Function *F) return *mc; } -void MachineFunction::clearSSARegMap() { - delete SSARegMapping; - SSARegMapping = 0; +/// 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(unsigned Src, unsigned Line, + unsigned Col) { + DebugLocTuple Tuple(Src, Line, Col); + DenseMap::iterator II + = DebugLocInfo.DebugIdMap.find(Tuple); + if (II != DebugLocInfo.DebugIdMap.end()) + return II->second; + // Add a new tuple. + unsigned Id = DebugLocInfo.DebugLocations.size(); + DebugLocInfo.DebugLocations.push_back(Tuple); + DebugLocInfo.DebugIdMap[Tuple] = Id; + return Id; +} + +/// getDebugLocTuple - Get the DebugLocTuple for a given DebugLoc object. +DebugLocTuple MachineFunction::getDebugLocTuple(DebugLoc DL) const { + unsigned Idx = DL.getIndex(); + assert(Idx < DebugLocInfo.DebugLocations.size() && + "Invalid index into debug locations!"); + return DebugLocInfo.DebugLocations[Idx]; } //===----------------------------------------------------------------------===// // MachineFrameInfo implementation //===----------------------------------------------------------------------===// +/// CreateFixedObject - Create a new object at a fixed location on the stack. +/// All fixed objects should be created before other objects are created for +/// efficiency. By default, fixed objects are immutable. This returns an +/// index with a negative value. +/// +int MachineFrameInfo::CreateFixedObject(uint64_t Size, int64_t SPOffset, + bool Immutable) { + assert(Size != 0 && "Cannot allocate zero size fixed stack objects!"); + Objects.insert(Objects.begin(), StackObject(Size, 1, SPOffset, Immutable)); + return -++NumFixedObjects; +} + + void MachineFrameInfo::print(const MachineFunction &MF, std::ostream &OS) const{ - int ValOffset = MF.getTarget().getFrameInfo()->getOffsetOfLocalArea(); + const TargetFrameInfo *FI = MF.getTarget().getFrameInfo(); + int ValOffset = (FI ? FI->getOffsetOfLocalArea() : 0); for (unsigned i = 0, e = Objects.size(); i != e; ++i) { const StackObject &SO = Objects[i]; - OS << " : "; + OS << " : "; + if (SO.Size == ~0ULL) { + OS << "dead\n"; + continue; + } if (SO.Size == 0) OS << "variable sized"; else @@ -385,7 +485,7 @@ void MachineJumpTableInfo::print(std::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) { - OS << " has " << JumpTables[i].MBBs.size() + OS << " has " << JumpTables[i].MBBs.size() << " entries\n"; } } @@ -410,7 +510,8 @@ MachineConstantPool::~MachineConstantPool() { } /// getConstantPoolIndex - Create a new entry in the constant pool or return -/// an existing one. User must specify an alignment in bytes for the object. +/// an existing one. User must specify the log2 of the minimum required +/// alignment for the object. /// unsigned MachineConstantPool::getConstantPoolIndex(Constant *C, unsigned Alignment) { @@ -428,7 +529,7 @@ unsigned MachineConstantPool::getConstantPoolIndex(Constant *C, unsigned Offset = 0; if (!Constants.empty()) { Offset = Constants.back().getOffset(); - Offset += TD->getTypeSize(Constants.back().getType()); + Offset += TD->getTypePaddedSize(Constants.back().getType()); Offset = (Offset+AlignMask)&~AlignMask; } @@ -452,7 +553,7 @@ unsigned MachineConstantPool::getConstantPoolIndex(MachineConstantPoolValue *V, unsigned Offset = 0; if (!Constants.empty()) { Offset = Constants.back().getOffset(); - Offset += TD->getTypeSize(Constants.back().getType()); + Offset += TD->getTypePaddedSize(Constants.back().getType()); Offset = (Offset+AlignMask)&~AlignMask; } @@ -460,10 +561,9 @@ unsigned MachineConstantPool::getConstantPoolIndex(MachineConstantPoolValue *V, return Constants.size()-1; } - -void MachineConstantPool::print(std::ostream &OS) const { +void MachineConstantPool::print(raw_ostream &OS) const { for (unsigned i = 0, e = Constants.size(); i != e; ++i) { - OS << " is"; + OS << " is"; if (Constants[i].isMachineConstantPoolEntry()) Constants[i].Val.MachineCPVal->print(OS); else @@ -473,4 +573,4 @@ void MachineConstantPool::print(std::ostream &OS) const { } } -void MachineConstantPool::dump() const { print(*cerr.stream()); } +void MachineConstantPool::dump() const { print(errs()); errs().flush(); }