1 //===-- SelectionDAG.cpp - Implement the SelectionDAG* classes ------------===// 2 // 3 // This file implements the SelectionDAG* classes, which are used to perform 4 // DAG-based instruction selection in a target-specific manner. 5 // 6 //===----------------------------------------------------------------------===// 7 8 #include "llvm/CodeGen/SelectionDAG.h" 9 #include "llvm/Type.h" 10 11 SelectionDAG::~SelectionDAG() { 12 for (unsigned i = 0, e = AllNodes.size(); i != e; ++i) 13 delete AllNodes[i]; 14 } 15 16 17 /// dump - Print out the current Selection DAG... 18 void SelectionDAG::dump() const { 19 Root->dump(); // Print from the root... 20 } 21 22 /// getValueType - Return the ValueType for the specified LLVM type. This 23 /// method works on all scalar LLVM types. 24 /// 25 MVT::ValueType SelectionDAG::getValueType(const Type *Ty) const { 26 switch (Ty->getPrimitiveID()) { 27 case Type::VoidTyID: assert(0 && "Void type object in getValueType!"); 28 default: assert(0 && "Unknown type in DAGBuilder!\n"); 29 case Type::BoolTyID: return MVT::i1; 30 case Type::SByteTyID: 31 case Type::UByteTyID: return MVT::i8; 32 case Type::ShortTyID: 33 case Type::UShortTyID: return MVT::i16; 34 case Type::IntTyID: 35 case Type::UIntTyID: return MVT::i32; 36 case Type::LongTyID: 37 case Type::ULongTyID: return MVT::i64; 38 case Type::FloatTyID: return MVT::f32; 39 case Type::DoubleTyID: return MVT::f64; 40 case Type::LabelTyID: 41 case Type::PointerTyID: return PointerType; 42 } 43 } 44 45 void SelectionDAGNode::dump() const { 46 // Print out the DAG in post-order 47 std::map<const SelectionDAGNode*, unsigned> NodeIDs; 48 unsigned ID = 0; 49 printit(0, ID, NodeIDs); 50 } 51 52 void SelectionDAGNode::printit(unsigned Offset, unsigned &LastID, 53 std::map<const SelectionDAGNode*, 54 unsigned> &NodeIDs) const { 55 if (!NodeIDs.count(this)) { 56 // Emit all of the uses first... 57 for (unsigned i = 0, e = Uses.size(); i != e; ++i) 58 Uses[i]->printit(Offset+1, LastID, NodeIDs); 59 60 NodeIDs[this] = LastID++; 61 62 std::cerr << std::string(Offset, ' ') << "#" << LastID-1 << " "; 63 } else { 64 // Node has already been emitted... 65 std::cerr << std::string(Offset, ' ') << "#" << NodeIDs[this] << " "; 66 } 67 68 switch (ValueType) { 69 case MVT::isVoid: std::cerr << "V:"; break; 70 case MVT::i1: std::cerr << "i1:"; break; 71 case MVT::i8: std::cerr << "i8:"; break; 72 case MVT::i16: std::cerr << "i16:"; break; 73 case MVT::i32: std::cerr << "i32:"; break; 74 case MVT::i64: std::cerr << "i64:"; break; 75 case MVT::f32: std::cerr << "f32:"; break; 76 case MVT::f64: std::cerr << "f64:"; break; 77 default: assert(0 && "Invalid node ValueType!"); 78 } 79 switch (NodeType) { 80 case ISD::ChainNode: std::cerr << "ChainNode"; break; 81 case ISD::BlockChainNode: std::cerr << "BlockChainNode"; break; 82 case ISD::ProtoNode: std::cerr << "ProtoNode"; break; 83 84 case ISD::Constant: std::cerr << "Constant"; break; 85 case ISD::FrameIndex: std::cerr << "FrameIndex"; break; 86 case ISD::BasicBlock: std::cerr << "BasicBlock"; break; 87 88 case ISD::Plus: std::cerr << "Plus"; break; 89 case ISD::Minus: std::cerr << "Minus"; break; 90 case ISD::Times: std::cerr << "Times"; break; 91 case ISD::SDiv: std::cerr << "SDiv"; break; 92 case ISD::UDiv: std::cerr << "UDiv"; break; 93 case ISD::SRem: std::cerr << "SRem"; break; 94 case ISD::URem: std::cerr << "URem"; break; 95 case ISD::And: std::cerr << "And"; break; 96 case ISD::Or: std::cerr << "Or"; break; 97 case ISD::Xor: std::cerr << "Xor"; break; 98 99 case ISD::SetEQ: std::cerr << "SetEQ"; break; 100 case ISD::SetNE: std::cerr << "SetNE"; break; 101 case ISD::SetLT: std::cerr << "SetLT"; break; 102 case ISD::SetLE: std::cerr << "SetLE"; break; 103 case ISD::SetGT: std::cerr << "SetGT"; break; 104 case ISD::SetGE: std::cerr << "SetGE"; break; 105 106 case ISD::Br: std::cerr << "Br"; break; 107 case ISD::BrCond: std::cerr << "BrCond"; break; 108 case ISD::Switch: std::cerr << "Switch"; break; 109 case ISD::Ret: std::cerr << "Ret"; break; 110 case ISD::RetVoid: std::cerr << "RetVoid"; break; 111 case ISD::Load: std::cerr << "Load"; break; 112 case ISD::Store: std::cerr << "Store"; break; 113 case ISD::PHI: std::cerr << "PHI"; break; 114 case ISD::Call: std::cerr << "Call"; break; 115 116 case ISD::Unspec1: std::cerr << "Unspec1"; break; 117 case ISD::Unspec2: std::cerr << "Unspec2"; break; 118 } 119 120 std::cerr << "\n"; 121 } 122