+MachineBasicBlock* ilist_traits<MachineBasicBlock>::createSentinel() {
+ MachineBasicBlock* dummy = new MachineBasicBlock();
+ LeakDetector::removeGarbageObject(dummy);
+ return dummy;
+}
+
+void ilist_traits<MachineBasicBlock>::transferNodesFromList(
+ iplist<MachineBasicBlock, ilist_traits<MachineBasicBlock> >& toList,
+ ilist_iterator<MachineBasicBlock> first,
+ ilist_iterator<MachineBasicBlock> last) {
+ if (Parent != toList.Parent)
+ for (; first != last; ++first)
+ first->Parent = toList.Parent;
+}
+
+MachineFunction::MachineFunction(const Function *F,
+ const TargetMachine &TM)
+ : Annotation(MF_AID), Fn(F), Target(TM) {
+ SSARegMapping = new SSARegMap();
+ MFInfo = 0;
+ FrameInfo = new MachineFrameInfo();
+ ConstantPool = new MachineConstantPool(TM.getTargetData());
+ UsedPhysRegs.resize(TM.getRegisterInfo()->getNumRegs());
+
+ // Set up jump table.
+ const TargetData &TD = *TM.getTargetData();
+ bool IsPic = TM.getRelocationModel() == Reloc::PIC_;
+ unsigned EntrySize = IsPic ? 4 : TD.getPointerSize();
+ unsigned Alignment = IsPic ? TD.getABITypeAlignment(Type::Int32Ty)
+ : TD.getPointerABIAlignment();
+ JumpTableInfo = new MachineJumpTableInfo(EntrySize, Alignment);
+
+ BasicBlocks.Parent = this;
+}
+
+MachineFunction::~MachineFunction() {
+ BasicBlocks.clear();
+ delete SSARegMapping;
+ delete MFInfo;
+ delete FrameInfo;
+ delete ConstantPool;
+ delete JumpTableInfo;
+}
+
+
+/// RenumberBlocks - This discards all of the MachineBasicBlock numbers and
+/// recomputes them. This guarantees that the MBB numbers are sequential,
+/// dense, and match the ordering of the blocks within the function. If a
+/// specific MachineBasicBlock is specified, only that block and those after
+/// it are renumbered.
+void MachineFunction::RenumberBlocks(MachineBasicBlock *MBB) {
+ if (empty()) { MBBNumbering.clear(); return; }
+ MachineFunction::iterator MBBI, E = end();
+ if (MBB == 0)
+ MBBI = begin();
+ else
+ MBBI = MBB;
+
+ // Figure out the block number this should have.
+ unsigned BlockNo = 0;
+ if (MBBI != begin())
+ BlockNo = prior(MBBI)->getNumber()+1;
+
+ for (; MBBI != E; ++MBBI, ++BlockNo) {
+ if (MBBI->getNumber() != (int)BlockNo) {
+ // Remove use of the old number.
+ if (MBBI->getNumber() != -1) {
+ assert(MBBNumbering[MBBI->getNumber()] == &*MBBI &&
+ "MBB number mismatch!");
+ MBBNumbering[MBBI->getNumber()] = 0;
+ }
+
+ // If BlockNo is already taken, set that block's number to -1.
+ if (MBBNumbering[BlockNo])
+ MBBNumbering[BlockNo]->setNumber(-1);
+
+ MBBNumbering[BlockNo] = MBBI;
+ MBBI->setNumber(BlockNo);
+ }
+ }
+
+ // Okay, all the blocks are renumbered. If we have compactified the block
+ // numbering, shrink MBBNumbering now.
+ assert(BlockNo <= MBBNumbering.size() && "Mismatch!");
+ MBBNumbering.resize(BlockNo);
+}
+
+
+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);
+
+ // Print JumpTable Information
+ getJumpTableInfo()->print(OS);
+
+ // Print Constant Pool
+ getConstantPool()->print(OS);
+
+ const MRegisterInfo *MRI = getTarget().getRegisterInfo();
+
+ if (!livein_empty()) {
+ OS << "Live Ins:";
+ for (livein_iterator I = livein_begin(), E = livein_end(); I != E; ++I) {
+ if (MRI)
+ OS << " " << MRI->getName(I->first);
+ else
+ OS << " Reg #" << I->first;
+
+ if (I->second)
+ OS << " in VR#" << I->second << " ";
+ }
+ OS << "\n";
+ }
+ if (!liveout_empty()) {
+ OS << "Live Outs:";
+ for (liveout_iterator I = liveout_begin(), E = liveout_end(); I != E; ++I)
+ if (MRI)
+ OS << " " << MRI->getName(*I);
+ else
+ OS << " Reg #" << *I;
+ OS << "\n";
+ }
+
+ for (const_iterator BB = begin(); BB != end(); ++BB)
+ BB->print(OS);
+
+ OS << "\n# End machine code for " << Fn->getName () << "().\n\n";
+}
+
+/// CFGOnly flag - This is used to control whether or not the CFG graph printer
+/// prints out the contents of basic blocks or not. This is acceptable because
+/// this code is only really used for debugging purposes.
+///
+static bool CFGOnly = false;
+
+namespace llvm {
+ template<>
+ struct DOTGraphTraits<const MachineFunction*> : public DefaultDOTGraphTraits {
+ static std::string getGraphName(const MachineFunction *F) {
+ return "CFG for '" + F->getFunction()->getName() + "' function";
+ }
+
+ static std::string getNodeLabel(const MachineBasicBlock *Node,
+ const MachineFunction *Graph) {
+ if (CFGOnly && Node->getBasicBlock() &&
+ !Node->getBasicBlock()->getName().empty())
+ return Node->getBasicBlock()->getName() + ":";
+
+ std::ostringstream Out;
+ if (CFGOnly) {
+ Out << Node->getNumber() << ':';
+ return Out.str();
+ }
+
+ Node->print(Out);
+
+ std::string OutStr = Out.str();
+ if (OutStr[0] == '\n') OutStr.erase(OutStr.begin());
+
+ // Process string output to make it nicer...
+ for (unsigned i = 0; i != OutStr.length(); ++i)
+ if (OutStr[i] == '\n') { // Left justify
+ OutStr[i] = '\\';
+ OutStr.insert(OutStr.begin()+i+1, 'l');
+ }
+ return OutStr;
+ }
+ };
+}
+
+void MachineFunction::viewCFG() const
+{
+#ifndef NDEBUG
+ ViewGraph(this, "mf" + getFunction()->getName());
+#else
+ cerr << "SelectionDAG::viewGraph is only available in debug builds on "
+ << "systems with Graphviz or gv!\n";
+#endif // NDEBUG
+}
+
+void MachineFunction::viewCFGOnly() const
+{
+ CFGOnly = true;
+ viewCFG();
+ CFGOnly = false;
+}
+