Move method bodies that depend on <algorithm> from MBB.h to MBB.cpp
[oota-llvm.git] / lib / CodeGen / MachineBasicBlock.cpp
1 //===-- llvm/CodeGen/MachineBasicBlock.cpp ----------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // Collect the sequence of machine instructions for a basic block.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "llvm/CodeGen/MachineBasicBlock.h"
15 #include "llvm/BasicBlock.h"
16 #include "llvm/CodeGen/MachineFunction.h"
17 #include "llvm/CodeGen/MachineInstr.h"
18 #include "llvm/Target/TargetInstrInfo.h"
19 #include "llvm/Target/TargetMachine.h"
20 #include "llvm/Support/LeakDetector.h"
21 #include <iostream>
22 #include <algorithm>
23 using namespace llvm;
24
25 MachineBasicBlock::~MachineBasicBlock() {
26   LeakDetector::removeGarbageObject(this);
27 }
28
29
30 // MBBs start out as #-1. When a MBB is added to a MachineFunction, it
31 // gets the next available unique MBB number. If it is removed from a
32 // MachineFunction, it goes back to being #-1.
33 void ilist_traits<MachineBasicBlock>::addNodeToList(MachineBasicBlock* N) {
34   assert(N->Parent == 0 && "machine instruction already in a basic block");
35   N->Parent = Parent;
36   N->Number = Parent->addToMBBNumbering(N);
37   LeakDetector::removeGarbageObject(N);
38 }
39
40 void ilist_traits<MachineBasicBlock>::removeNodeFromList(MachineBasicBlock* N) {
41   assert(N->Parent != 0 && "machine instruction not in a basic block");
42   N->Parent->removeFromMBBNumbering(N->Number);
43   N->Number = -1;
44   N->Parent = 0;
45   LeakDetector::addGarbageObject(N);
46 }
47
48
49 MachineInstr* ilist_traits<MachineInstr>::createNode() {
50   MachineInstr* dummy = new MachineInstr(0, 0);
51   LeakDetector::removeGarbageObject(dummy);
52   return dummy;
53 }
54
55 void ilist_traits<MachineInstr>::addNodeToList(MachineInstr* N) {
56   assert(N->parent == 0 && "machine instruction already in a basic block");
57   N->parent = parent;
58   LeakDetector::removeGarbageObject(N);
59 }
60
61 void ilist_traits<MachineInstr>::removeNodeFromList(MachineInstr* N) {
62   assert(N->parent != 0 && "machine instruction not in a basic block");
63   N->parent = 0;
64   LeakDetector::addGarbageObject(N);
65 }
66
67 void ilist_traits<MachineInstr>::transferNodesFromList(
68   iplist<MachineInstr, ilist_traits<MachineInstr> >& toList,
69   ilist_iterator<MachineInstr> first,
70   ilist_iterator<MachineInstr> last) {
71   if (parent != toList.parent)
72     for (; first != last; ++first)
73       first->parent = toList.parent;
74 }
75
76 MachineBasicBlock::iterator MachineBasicBlock::getFirstTerminator() {
77   const TargetInstrInfo& TII = *getParent()->getTarget().getInstrInfo();
78   iterator I = end();
79   while (I != begin() && TII.isTerminatorInstr((--I)->getOpcode()));
80   if (I != end() && !TII.isTerminatorInstr(I->getOpcode())) ++I;
81   return I;
82 }
83
84 void MachineBasicBlock::dump() const {
85   print(std::cerr);
86 }
87
88 void MachineBasicBlock::print(std::ostream &OS) const {
89   if(!getParent()) {
90     OS << "Can't print out MachineBasicBlock because parent MachineFunction"
91        << " is null\n";
92     return;
93   }
94
95   const BasicBlock *LBB = getBasicBlock();
96   if (LBB)
97     OS << "\n" << LBB->getName() << " (" << (const void*)this
98        << ", LLVM BB @" << (const void*) LBB << "):\n";
99   for (const_iterator I = begin(); I != end(); ++I) {
100     OS << "\t";
101     I->print(OS, &getParent()->getTarget());
102   }
103 }
104
105 void MachineBasicBlock::addSuccessor(MachineBasicBlock *succ) {
106   Successors.push_back(succ);
107   succ->addPredecessor(this);
108 }
109
110 void MachineBasicBlock::removeSuccessor(MachineBasicBlock *succ) {
111   succ->removePredecessor(this);
112   succ_iterator I = std::find(Successors.begin(), Successors.end(), succ);
113   assert(I != Successors.end() && "Not a current successor!");
114   Successors.erase(I);
115 }
116
117 void MachineBasicBlock::removeSuccessor(succ_iterator I) {
118   assert(I != Successors.end() && "Not a current successor!");
119   (*I)->removePredecessor(this);
120   Successors.erase(I);
121 }
122
123 void MachineBasicBlock::addPredecessor(MachineBasicBlock *pred) {
124   Predecessors.push_back(pred);
125 }
126
127 void MachineBasicBlock::removePredecessor(MachineBasicBlock *pred) {
128   std::vector<MachineBasicBlock *>::iterator I = 
129     std::find(Predecessors.begin(), Predecessors.end(), pred);
130   assert(I != Predecessors.end() && "Pred is not a predecessor of this block!");
131   Predecessors.erase(I);
132 }