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 "Support/LeakDetector.h" 21 using namespace llvm; 22 23 const MachineFunction *MachineBasicBlock::getParent() const { 24 // Get the parent by getting the Function parent of the basic block, and 25 // getting the MachineFunction from it. 26 return &MachineFunction::get(getBasicBlock()->getParent()); 27 } 28 29 30 MachineInstr* ilist_traits<MachineInstr>::createNode() 31 { 32 MachineInstr* dummy = new MachineInstr(0, 0); 33 LeakDetector::removeGarbageObject(dummy); 34 return dummy; 35 } 36 37 void ilist_traits<MachineInstr>::addNodeToList(MachineInstr* N) 38 { 39 assert(N->parent == 0 && "machine instruction already in a basic block"); 40 N->parent = parent; 41 LeakDetector::removeGarbageObject(N); 42 } 43 44 void ilist_traits<MachineInstr>::removeNodeFromList(MachineInstr* N) 45 { 46 assert(N->parent != 0 && "machine instruction not in a basic block"); 47 N->parent = 0; 48 LeakDetector::addGarbageObject(N); 49 } 50 51 void ilist_traits<MachineInstr>::transferNodesFromList( 52 iplist<MachineInstr, ilist_traits<MachineInstr> >& toList, 53 ilist_iterator<MachineInstr> first, 54 ilist_iterator<MachineInstr> last) 55 { 56 if (parent != toList.parent) 57 for (; first != last; ++first) 58 first->parent = toList.parent; 59 } 60 61 MachineBasicBlock::iterator MachineBasicBlock::getFirstTerminator() 62 { 63 const TargetInstrInfo& TII = MachineFunction::get( 64 getBasicBlock()->getParent()).getTarget().getInstrInfo(); 65 iterator I = end(); 66 while (I != begin() && TII.isTerminatorInstr((--I)->getOpcode())); 67 if (I != end() && !TII.isTerminatorInstr(I->getOpcode())) ++I; 68 return I; 69 } 70 71 void MachineBasicBlock::dump() const 72 { 73 print(std::cerr); 74 } 75 76 void MachineBasicBlock::print(std::ostream &OS) const 77 { 78 const BasicBlock *LBB = getBasicBlock(); 79 OS << "\n" << LBB->getName() << " (" << (const void*)LBB << "):\n"; 80 for (const_iterator I = begin(); I != end(); ++I) { 81 OS << "\t"; 82 I->print(OS, MachineFunction::get(LBB->getParent()).getTarget()); 83 } 84 } 85