//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/MachineBasicBlock.h"
-
#include "llvm/BasicBlock.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstr.h"
-#include "Support/LeakDetector.h"
+#include "llvm/Target/TargetInstrInfo.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Support/LeakDetector.h"
#include <iostream>
-
using namespace llvm;
-MachineInstr* ilist_traits<MachineInstr>::createNode()
-{
- MachineInstr* dummy = new MachineInstr(0, 0);
- LeakDetector::removeGarbageObject(dummy);
- return dummy;
+MachineBasicBlock::~MachineBasicBlock() {
+ LeakDetector::removeGarbageObject(this);
+}
+
+
+
+// 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);
+}
+
+
+MachineInstr* ilist_traits<MachineInstr>::createNode() {
+ MachineInstr* dummy = new MachineInstr(0, 0);
+ 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);
+ 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);
+ 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> >& toList,
- ilist_iterator<MachineInstr> first,
- ilist_iterator<MachineInstr> last)
+ iplist<MachineInstr, ilist_traits<MachineInstr> >& toList,
+ ilist_iterator<MachineInstr> first,
+ ilist_iterator<MachineInstr> last)
{
- if (parent != toList.parent)
- for (; first != last; ++first)
- first->parent = toList.parent;
+ if (parent != toList.parent)
+ for (; first != last; ++first)
+ first->parent = toList.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(std::cerr);
+ print(std::cerr);
}
void MachineBasicBlock::print(std::ostream &OS) const
{
- const BasicBlock *LBB = getBasicBlock();
- OS << "\n" << LBB->getName() << " (" << (const void*)LBB << "):\n";
- for (const_iterator I = begin(); I != end(); ++I) {
- OS << "\t";
- I->print(OS, MachineFunction::get(LBB->getParent()).getTarget());
- }
+ if(!getParent()) {
+ OS << "Can't print out MachineBasicBlock because parent MachineFunction is null\n";
+ return;
+ }
+
+ const BasicBlock *LBB = getBasicBlock();
+ if (LBB)
+ OS << "\n" << LBB->getName() << " (" << (const void*)this
+ << ", LLVM BB @" << (const void*) LBB << "):\n";
+ for (const_iterator I = begin(); I != end(); ++I) {
+ OS << "\t";
+ I->print(OS, &getParent()->getTarget());
+ }
}