-//===-- MachineBasicBlock.cpp ---------------------------------------------===//
-//
+//===-- llvm/CodeGen/MachineBasicBlock.cpp ----------------------*- C++ -*-===//
+//
+// 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.
+//
+//===----------------------------------------------------------------------===//
+//
// Collect the sequence of machine instructions for a basic block.
//
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/MachineBasicBlock.h"
+#include "llvm/BasicBlock.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/Target/MRegisterInfo.h"
+#include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetInstrInfo.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Support/LeakDetector.h"
+#include <algorithm>
+using namespace llvm;
+
+MachineBasicBlock::~MachineBasicBlock() {
+ LeakDetector::removeGarbageObject(this);
+}
+
+std::ostream& llvm::operator<<(std::ostream &OS, const MachineBasicBlock &MBB) {
+ MBB.print(OS);
+ return OS;
+}
+
+// MBBs start out as #-1. When a MBB is added to a MachineFunction, it
+// gets the next available unique MBB number. If it is removed from a
+// MachineFunction, it goes back to being #-1.
+void ilist_traits<MachineBasicBlock>::addNodeToList(MachineBasicBlock* N) {
+ assert(N->Parent == 0 && "machine instruction already in a basic block");
+ N->Parent = Parent;
+ N->Number = Parent->addToMBBNumbering(N);
+ LeakDetector::removeGarbageObject(N);
+}
+
+void ilist_traits<MachineBasicBlock>::removeNodeFromList(MachineBasicBlock* N) {
+ assert(N->Parent != 0 && "machine instruction not in a basic block");
+ N->Parent->removeFromMBBNumbering(N->Number);
+ N->Number = -1;
+ N->Parent = 0;
+ LeakDetector::addGarbageObject(N);
+}
-AnnotationID MCFBB_AID(
- AnnotationManager::getID("CodeGen::MachineBasicBlock"));
-static Annotation *CreateMCFBB(AnnotationID AID, const Annotable *, void *) {
- assert(AID == MCFBB_AID);
- return new MachineBasicBlock(); // Invoke constructor!
+MachineInstr* ilist_traits<MachineInstr>::createSentinel() {
+ MachineInstr* dummy = new MachineInstr();
+ LeakDetector::removeGarbageObject(dummy);
+ return dummy;
+}
+
+void ilist_traits<MachineInstr>::addNodeToList(MachineInstr* N) {
+ assert(N->parent == 0 && "machine instruction already in a basic block");
+ N->parent = parent;
+ LeakDetector::removeGarbageObject(N);
+}
+
+void ilist_traits<MachineInstr>::removeNodeFromList(MachineInstr* N) {
+ assert(N->parent != 0 && "machine instruction not in a basic block");
+ N->parent = 0;
+ LeakDetector::addGarbageObject(N);
+}
+
+void ilist_traits<MachineInstr>::transferNodesFromList(
+ iplist<MachineInstr, ilist_traits<MachineInstr> >& fromList,
+ ilist_iterator<MachineInstr> first,
+ ilist_iterator<MachineInstr> last) {
+ if (parent != fromList.parent)
+ for (; first != last; ++first)
+ first->parent = parent;
+}
+
+MachineBasicBlock::iterator MachineBasicBlock::getFirstTerminator() {
+ const TargetInstrInfo& TII = *getParent()->getTarget().getInstrInfo();
+ iterator I = end();
+ while (I != begin() && TII.isTerminatorInstr((--I)->getOpcode()));
+ if (I != end() && !TII.isTerminatorInstr(I->getOpcode())) ++I;
+ return I;
+}
+
+void MachineBasicBlock::dump() const {
+ print(*cerr.stream());
+}
+
+static inline void OutputReg(std::ostream &os, unsigned RegNo,
+ const MRegisterInfo *MRI = 0) {
+ if (!RegNo || MRegisterInfo::isPhysicalRegister(RegNo)) {
+ if (MRI)
+ os << " %" << MRI->get(RegNo).Name;
+ else
+ os << " %mreg(" << RegNo << ")";
+ } else
+ os << " %reg" << RegNo;
}
-// Register the annotation with the annotation factory
-static struct MCFBBInitializer {
- MCFBBInitializer() {
- AnnotationManager::registerAnnotationFactory(MCFBB_AID, &CreateMCFBB);
+void MachineBasicBlock::print(std::ostream &OS) const {
+ const MachineFunction *MF = getParent();
+ if(!MF) {
+ OS << "Can't print out MachineBasicBlock because parent MachineFunction"
+ << " is null\n";
+ return;
}
-} RegisterCreateMCFBB;
+ const BasicBlock *LBB = getBasicBlock();
+ OS << "\n";
+ if (LBB) OS << LBB->getName();
+ OS << " (" << (const void*)this
+ << ", LLVM BB @" << (const void*) LBB << ", ID#" << getNumber()<< "):\n";
+
+ const MRegisterInfo *MRI = MF->getTarget().getRegisterInfo();
+ if (livein_begin() != livein_end()) {
+ OS << "Live Ins:";
+ for (const_livein_iterator I = livein_begin(),E = livein_end(); I != E; ++I)
+ OutputReg(OS, *I, MRI);
+ OS << "\n";
+ }
+ // Print the preds of this block according to the CFG.
+ if (!pred_empty()) {
+ OS << " Predecessors according to CFG:";
+ for (const_pred_iterator PI = pred_begin(), E = pred_end(); PI != E; ++PI)
+ OS << " " << *PI << " (#" << (*PI)->getNumber() << ")";
+ OS << "\n";
+ }
+
+ for (const_iterator I = begin(); I != end(); ++I) {
+ OS << "\t";
+ I->print(OS, &getParent()->getTarget());
+ }
+
+ // Print the successors of this block according to the CFG.
+ if (!succ_empty()) {
+ OS << " Successors according to CFG:";
+ for (const_succ_iterator SI = succ_begin(), E = succ_end(); SI != E; ++SI)
+ OS << " " << *SI << " (#" << (*SI)->getNumber() << ")";
+ OS << "\n";
+ }
+}
+
+void MachineBasicBlock::removeLiveIn(unsigned Reg) {
+ livein_iterator I = std::find(livein_begin(), livein_end(), Reg);
+ assert(I != livein_end() && "Not a live in!");
+ LiveIns.erase(I);
+}
+
+void MachineBasicBlock::moveBefore(MachineBasicBlock *NewAfter) {
+ MachineFunction::BasicBlockListType &BBList =getParent()->getBasicBlockList();
+ getParent()->getBasicBlockList().splice(NewAfter, BBList, this);
+}
+
+void MachineBasicBlock::moveAfter(MachineBasicBlock *NewBefore) {
+ MachineFunction::BasicBlockListType &BBList =getParent()->getBasicBlockList();
+ MachineFunction::iterator BBI = NewBefore;
+ getParent()->getBasicBlockList().splice(++BBI, BBList, this);
+}
+
+
+void MachineBasicBlock::addSuccessor(MachineBasicBlock *succ) {
+ Successors.push_back(succ);
+ succ->addPredecessor(this);
+}
+
+void MachineBasicBlock::removeSuccessor(MachineBasicBlock *succ) {
+ succ->removePredecessor(this);
+ succ_iterator I = std::find(Successors.begin(), Successors.end(), succ);
+ assert(I != Successors.end() && "Not a current successor!");
+ Successors.erase(I);
+}
+
+void MachineBasicBlock::removeSuccessor(succ_iterator I) {
+ assert(I != Successors.end() && "Not a current successor!");
+ (*I)->removePredecessor(this);
+ Successors.erase(I);
+}
+
+void MachineBasicBlock::addPredecessor(MachineBasicBlock *pred) {
+ Predecessors.push_back(pred);
+}
+
+void MachineBasicBlock::removePredecessor(MachineBasicBlock *pred) {
+ std::vector<MachineBasicBlock *>::iterator I =
+ std::find(Predecessors.begin(), Predecessors.end(), pred);
+ assert(I != Predecessors.end() && "Pred is not a predecessor of this block!");
+ Predecessors.erase(I);
+}