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 23 //************************ Class Implementations **************************/ 24 25 // Constructor for instructions with fixed #operands (nearly all) 26 MachineInstr::MachineInstr(MachineOpCode _opCode, 27 OpCodeMask _opCodeMask) 28 : opCode(_opCode), 29 opCodeMask(_opCodeMask), 30 operands(TargetInstrDescriptors[_opCode].numOperands) 31 { 32 assert(TargetInstrDescriptors[_opCode].numOperands >= 0); 33 } 34 35 // Constructor for instructions with variable #operands 36 MachineInstr::MachineInstr(MachineOpCode _opCode, 37 unsigned numOperands, 38 OpCodeMask _opCodeMask) 39 : opCode(_opCode), 40 opCodeMask(_opCodeMask), 41 operands(numOperands) 42 { 43 } 44 45 void 46 MachineInstr::SetMachineOperand(unsigned int i, 47 MachineOperand::MachineOperandType operandType, 48 Value* _val, bool isdef=false) 49 { 50 assert(i < operands.size()); 51 operands[i].Initialize(operandType, _val); 52 operands[i].isDef = isdef || 53 TargetInstrDescriptors[opCode].resultPos == (int) i; 54 } 55 56 void 57 MachineInstr::SetMachineOperand(unsigned int i, 58 MachineOperand::MachineOperandType operandType, 59 int64_t intValue, bool isdef=false) 60 { 61 assert(i < operands.size()); 62 operands[i].InitializeConst(operandType, intValue); 63 operands[i].isDef = isdef || 64 TargetInstrDescriptors[opCode].resultPos == (int) i; 65 } 66 67 void 68 MachineInstr::SetMachineOperand(unsigned int i, 69 unsigned int regNum, bool isdef=false) 70 { 71 assert(i < operands.size()); 72 operands[i].InitializeReg(regNum); 73 operands[i].isDef = isdef || 74 TargetInstrDescriptors[opCode].resultPos == (int) i; 75 } 76 77 void 78 MachineInstr::dump(unsigned int indent) const 79 { 80 for (unsigned i=0; i < indent; i++) 81 cout << " "; 82 83 cout << *this; 84 } 85 86 ostream& 87 operator<< (ostream& os, const MachineInstr& minstr) 88 { 89 os << TargetInstrDescriptors[minstr.opCode].opCodeString; 90 91 for (unsigned i=0, N=minstr.getNumOperands(); i < N; i++) 92 os << "\t" << minstr.getOperand(i); 93 94 #undef DEBUG_VAL_OP_ITERATOR 95 #ifdef DEBUG_VAL_OP_ITERATOR 96 os << endl << "\tValue operands are: "; 97 for (MachineInstr::val_op_const_iterator vo(&minstr); ! vo.done(); ++vo) 98 { 99 const Value* val = *vo; 100 os << val << (vo.isDef()? "(def), " : ", "); 101 } 102 #endif 103 104 105 106 #if 1 107 // code for printing implict references 108 109 unsigned NumOfImpRefs = minstr.getNumImplicitRefs(); 110 if( NumOfImpRefs > 0 ) { 111 112 os << "\tImplicit:"; 113 114 for(unsigned z=0; z < NumOfImpRefs; z++) { 115 os << minstr.getImplicitRef(z); 116 cout << "\t"; 117 } 118 } 119 120 #endif 121 122 123 os << endl; 124 125 return os; 126 } 127 128 static inline ostream& 129 OutputOperand(ostream &os, const MachineOperand &mop) 130 { 131 switch (mop.getOperandType()) 132 { 133 case MachineOperand::MO_CCRegister: 134 case MachineOperand::MO_VirtualRegister: 135 return os << "(val " << mop.getVRegValue() << ")"; 136 case MachineOperand::MO_MachineRegister: 137 return os << "(" << mop.getMachineRegNum() << ")"; 138 default: 139 assert(0 && "Unknown operand type"); 140 return os; 141 } 142 } 143 144 145 ostream& 146 operator<<(ostream &os, const MachineOperand &mop) 147 { 148 switch(mop.opType) 149 { 150 case MachineOperand::MO_VirtualRegister: 151 case MachineOperand::MO_MachineRegister: 152 os << "%reg"; 153 return OutputOperand(os, mop); 154 case MachineOperand::MO_CCRegister: 155 os << "%ccreg"; 156 return OutputOperand(os, mop); 157 case MachineOperand::MO_SignExtendedImmed: 158 return os << mop.immedVal; 159 case MachineOperand::MO_UnextendedImmed: 160 return os << mop.immedVal; 161 case MachineOperand::MO_PCRelativeDisp: 162 { 163 const Value* opVal = mop.getVRegValue(); 164 bool isLabel = isa<Method>(opVal) || isa<BasicBlock>(opVal); 165 return os << "%disp(" 166 << (isLabel? "label " : "addr-of-val ") 167 << opVal << ")"; 168 } 169 default: 170 assert(0 && "Unrecognized operand type"); 171 break; 172 } 173 174 return os; 175 } 176 177 178 void 179 PrintMachineInstructions(const Method *const method) 180 { 181 cout << "\n" << method->getReturnType() 182 << " \"" << method->getName() << "\"" << endl; 183 184 for (Method::const_iterator BI = method->begin(); BI != method->end(); ++BI) 185 { 186 BasicBlock* bb = *BI; 187 cout << "\n" 188 << (bb->hasName()? bb->getName() : "Label") 189 << " (" << bb << ")" << ":" 190 << endl; 191 192 MachineCodeForBasicBlock& mvec = bb->getMachineInstrVec(); 193 for (unsigned i=0; i < mvec.size(); i++) 194 cout << "\t" << *mvec[i]; 195 } 196 cout << endl << "End method \"" << method->getName() << "\"" 197 << endl << endl; 198 } 199