#include "llvm/Target/TargetMachine.h"
#include "llvm/Support/LeakDetector.h"
#include <iostream>
+#include <algorithm>
using namespace llvm;
MachineBasicBlock::~MachineBasicBlock() {
LeakDetector::removeGarbageObject(this);
}
-
-// MBBs start out as #-1. When a MBB is added to a MachineFunction, it
+// 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) {
}
-MachineInstr* ilist_traits<MachineInstr>::createNode() {
- MachineInstr* dummy = new MachineInstr(0, 0);
- LeakDetector::removeGarbageObject(dummy);
- return dummy;
+MachineInstr* ilist_traits<MachineInstr>::createSentinel() {
+ 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);
+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>::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> >& toList,
- ilist_iterator<MachineInstr> first,
- ilist_iterator<MachineInstr> last)
-{
- if (parent != toList.parent)
- for (; first != last; ++first)
- first->parent = toList.parent;
+ 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;
}
-MachineBasicBlock::iterator MachineBasicBlock::getFirstTerminator()
-{
+MachineBasicBlock::iterator MachineBasicBlock::getFirstTerminator() {
const TargetInstrInfo& TII = *getParent()->getTarget().getInstrInfo();
iterator I = end();
while (I != begin() && TII.isTerminatorInstr((--I)->getOpcode()));
return I;
}
-void MachineBasicBlock::dump() const
-{
- print(std::cerr);
+void MachineBasicBlock::dump() const {
+ print(std::cerr);
}
-void MachineBasicBlock::print(std::ostream &OS) const
-{
+void MachineBasicBlock::print(std::ostream &OS) const {
if(!getParent()) {
- OS << "Can't print out MachineBasicBlock because parent MachineFunction is null\n";
+ 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());
- }
+
+ 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());
+ }
+}
+
+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);
}