1 // $Id$ 2 //*************************************************************************** 3 // File: 4 // MachineInstr.cpp 5 // 6 // Purpose: 7 // 8 // 9 // Strategy: 10 // 11 // History: 12 // 7/2/01 - Vikram Adve - Created 13 //**************************************************************************/ 14 15 16 #include "llvm/CodeGen/MachineInstr.h" 17 #include "llvm/Target/MachineRegInfo.h" 18 #include "llvm/Method.h" 19 #include "llvm/Instruction.h" 20 21 22 //************************ Class Implementations **************************/ 23 24 // Constructor for instructions with fixed #operands (nearly all) 25 MachineInstr::MachineInstr(MachineOpCode _opCode, 26 OpCodeMask _opCodeMask) 27 : opCode(_opCode), 28 opCodeMask(_opCodeMask), 29 operands(TargetInstrDescriptors[_opCode].numOperands) 30 { 31 assert(TargetInstrDescriptors[_opCode].numOperands >= 0); 32 } 33 34 // Constructor for instructions with variable #operands 35 MachineInstr::MachineInstr(MachineOpCode _opCode, 36 unsigned numOperands, 37 OpCodeMask _opCodeMask) 38 : opCode(_opCode), 39 opCodeMask(_opCodeMask), 40 operands(numOperands) 41 { 42 } 43 44 void 45 MachineInstr::SetMachineOperand(unsigned int i, 46 MachineOperand::MachineOperandType operandType, 47 Value* _val, bool isdef=false) 48 { 49 assert(i < operands.size()); 50 operands[i].Initialize(operandType, _val); 51 operands[i].isDef = isdef || 52 TargetInstrDescriptors[opCode].resultPos == (int) i; 53 } 54 55 void 56 MachineInstr::SetMachineOperand(unsigned int i, 57 MachineOperand::MachineOperandType operandType, 58 int64_t intValue, bool isdef=false) 59 { 60 assert(i < operands.size()); 61 operands[i].InitializeConst(operandType, intValue); 62 operands[i].isDef = isdef || 63 TargetInstrDescriptors[opCode].resultPos == (int) i; 64 } 65 66 void 67 MachineInstr::SetMachineOperand(unsigned int i, 68 unsigned int regNum, bool isdef=false) 69 { 70 assert(i < operands.size()); 71 operands[i].InitializeReg(regNum); 72 operands[i].isDef = isdef || 73 TargetInstrDescriptors[opCode].resultPos == (int) i; 74 } 75 76 void 77 MachineInstr::dump(unsigned int indent) const 78 { 79 for (unsigned i=0; i < indent; i++) 80 cout << " "; 81 82 cout << *this; 83 } 84 85 ostream& 86 operator<< (ostream& os, const MachineInstr& minstr) 87 { 88 os << TargetInstrDescriptors[minstr.opCode].opCodeString; 89 90 for (unsigned i=0, N=minstr.getNumOperands(); i < N; i++) 91 os << "\t" << minstr.getOperand(i); 92 93 #undef DEBUG_VAL_OP_ITERATOR 94 #ifdef DEBUG_VAL_OP_ITERATOR 95 os << endl << "\tValue operands are: "; 96 for (MachineInstr::val_op_const_iterator vo(&minstr); ! vo.done(); ++vo) 97 { 98 const Value* val = *vo; 99 os << val << (vo.isDef()? "(def), " : ", "); 100 } 101 os << endl; 102 #endif 103 104 return os; 105 } 106 107 static inline ostream& 108 OutputOperand(ostream &os, const MachineOperand &mop) 109 { 110 switch (mop.getOperandType()) 111 { 112 case MachineOperand::MO_CCRegister: 113 case MachineOperand::MO_VirtualRegister: 114 return os << "(val " << mop.getVRegValue() << ")"; 115 case MachineOperand::MO_MachineRegister: 116 return os << "(" << mop.getMachineRegNum() << ")"; 117 default: 118 assert(0 && "Unknown operand type"); 119 return os; 120 } 121 } 122 123 124 ostream& 125 operator<<(ostream &os, const MachineOperand &mop) 126 { 127 switch(mop.opType) 128 { 129 case MachineOperand::MO_VirtualRegister: 130 case MachineOperand::MO_MachineRegister: 131 os << "%reg"; 132 return OutputOperand(os, mop); 133 case MachineOperand::MO_CCRegister: 134 os << "%ccreg"; 135 return OutputOperand(os, mop); 136 case MachineOperand::MO_SignExtendedImmed: 137 return os << mop.immedVal; 138 case MachineOperand::MO_UnextendedImmed: 139 return os << mop.immedVal; 140 case MachineOperand::MO_PCRelativeDisp: 141 { 142 const Value* opVal = mop.getVRegValue(); 143 bool isLabel = isa<Method>(opVal) || isa<BasicBlock>(opVal); 144 return os << "%disp(" 145 << (isLabel? "label " : "addr-of-val ") 146 << opVal << ")"; 147 } 148 default: 149 assert(0 && "Unrecognized operand type"); 150 break; 151 } 152 153 return os; 154 } 155 156 157 void 158 PrintMachineInstructions(const Method *const method) 159 { 160 cout << "\n" << method->getReturnType() 161 << " \"" << method->getName() << "\"" << endl; 162 163 for (Method::const_iterator BI = method->begin(); BI != method->end(); ++BI) 164 { 165 BasicBlock* bb = *BI; 166 cout << "\n" 167 << (bb->hasName()? bb->getName() : "Label") 168 << " (" << bb << ")" << ":" 169 << endl; 170 171 MachineCodeForBasicBlock& mvec = bb->getMachineInstrVec(); 172 for (unsigned i=0; i < mvec.size(); i++) 173 cout << "\t" << *mvec[i] << endl; 174 } 175 cout << endl << "End method \"" << method->getName() << "\"" 176 << endl << endl; 177 } 178