mirror of
https://github.com/c64scene-ar/llvm-6502.git
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df1c3b8398
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1137 91177308-0d34-0410-b5e6-96231b3b80d8
237 lines
5.8 KiB
C++
237 lines
5.8 KiB
C++
// $Id$
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//***************************************************************************
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// File:
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// MachineInstr.cpp
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//
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// Purpose:
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//
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//
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// Strategy:
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//
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// History:
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// 7/2/01 - Vikram Adve - Created
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//**************************************************************************/
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#include "llvm/CodeGen/MachineInstr.h"
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#include "llvm/Target/MachineRegInfo.h"
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#include "llvm/Method.h"
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#include "llvm/Instruction.h"
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//************************ Class Implementations **************************/
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// Constructor for instructions with fixed #operands (nearly all)
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MachineInstr::MachineInstr(MachineOpCode _opCode,
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OpCodeMask _opCodeMask)
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: opCode(_opCode),
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opCodeMask(_opCodeMask),
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operands(TargetInstrDescriptors[_opCode].numOperands)
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{
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assert(TargetInstrDescriptors[_opCode].numOperands >= 0);
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}
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// Constructor for instructions with variable #operands
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MachineInstr::MachineInstr(MachineOpCode _opCode,
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unsigned numOperands,
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OpCodeMask _opCodeMask)
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: opCode(_opCode),
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opCodeMask(_opCodeMask),
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operands(numOperands)
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{
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}
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void
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MachineInstr::SetMachineOperand(unsigned int i,
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MachineOperand::MachineOperandType operandType,
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Value* _val, bool isdef=false)
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{
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assert(i < operands.size());
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operands[i].Initialize(operandType, _val);
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operands[i].isDef = isdef ||
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TargetInstrDescriptors[opCode].resultPos == (int) i;
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}
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void
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MachineInstr::SetMachineOperand(unsigned int i,
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MachineOperand::MachineOperandType operandType,
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int64_t intValue, bool isdef=false)
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{
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assert(i < operands.size());
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operands[i].InitializeConst(operandType, intValue);
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operands[i].isDef = isdef ||
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TargetInstrDescriptors[opCode].resultPos == (int) i;
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}
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void
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MachineInstr::SetMachineOperand(unsigned int i,
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int regNum, bool isdef=false)
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{
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assert(i < operands.size());
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operands[i].InitializeReg(regNum);
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operands[i].isDef = isdef ||
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TargetInstrDescriptors[opCode].resultPos == (int) i;
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}
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void
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MachineInstr::dump(unsigned int indent) const
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{
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for (unsigned i=0; i < indent; i++)
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cout << " ";
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cout << *this;
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}
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ostream&
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operator<< (ostream& os, const MachineInstr& minstr)
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{
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os << TargetInstrDescriptors[minstr.opCode].opCodeString;
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for (unsigned i=0, N=minstr.getNumOperands(); i < N; i++)
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os << "\t" << minstr.getOperand(i);
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#undef DEBUG_VAL_OP_ITERATOR
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#ifdef DEBUG_VAL_OP_ITERATOR
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os << endl << "\tValue operands are: ";
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for (MachineInstr::val_op_const_iterator vo(&minstr); ! vo.done(); ++vo)
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{
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const Value* val = *vo;
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os << val << (vo.isDef()? "(def), " : ", ");
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}
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#endif
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#if 1
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// code for printing implict references
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unsigned NumOfImpRefs = minstr.getNumImplicitRefs();
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if( NumOfImpRefs > 0 ) {
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os << "\tImplicit:";
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for(unsigned z=0; z < NumOfImpRefs; z++) {
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os << minstr.getImplicitRef(z);
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cout << "\t";
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}
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}
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#endif
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os << endl;
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return os;
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}
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static inline ostream&
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OutputOperand(ostream &os, const MachineOperand &mop)
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{
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switch (mop.getOperandType())
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{
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case MachineOperand::MO_CCRegister:
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case MachineOperand::MO_VirtualRegister:
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return os << "(val " << mop.getVRegValue() << ")";
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case MachineOperand::MO_MachineRegister:
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return os << "(" << mop.getMachineRegNum() << ")";
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default:
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assert(0 && "Unknown operand type");
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return os;
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}
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}
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ostream&
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operator<<(ostream &os, const MachineOperand &mop)
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{
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switch(mop.opType)
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{
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case MachineOperand::MO_VirtualRegister:
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case MachineOperand::MO_MachineRegister:
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os << "%reg";
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return OutputOperand(os, mop);
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case MachineOperand::MO_CCRegister:
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os << "%ccreg";
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return OutputOperand(os, mop);
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case MachineOperand::MO_SignExtendedImmed:
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return os << mop.immedVal;
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case MachineOperand::MO_UnextendedImmed:
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return os << mop.immedVal;
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case MachineOperand::MO_PCRelativeDisp:
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{
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const Value* opVal = mop.getVRegValue();
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bool isLabel = isa<Method>(opVal) || isa<BasicBlock>(opVal);
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return os << "%disp("
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<< (isLabel? "label " : "addr-of-val ")
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<< opVal << ")";
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}
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default:
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assert(0 && "Unrecognized operand type");
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break;
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}
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return os;
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}
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void
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MachineCodeForMethod::putLocalVarAtOffsetFromFP(const Value* local,
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int offset,
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unsigned int size)
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{
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offsetsFromFP[local] = offset;
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incrementAutomaticVarsSize(size);
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}
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void
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MachineCodeForMethod::putLocalVarAtOffsetFromSP(const Value* local,
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int offset,
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unsigned int size)
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{
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offsetsFromSP[local] = offset;
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incrementAutomaticVarsSize(size);
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}
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int
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MachineCodeForMethod::getOffsetFromFP(const Value* local) const
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{
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hash_map<const Value*, int>::const_iterator pair = offsetsFromFP.find(local);
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assert(pair != offsetsFromFP.end() && "Offset from FP unknown for Value");
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return (*pair).second;
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}
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int
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MachineCodeForMethod::getOffsetFromSP(const Value* local) const
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{
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hash_map<const Value*, int>::const_iterator pair = offsetsFromSP.find(local);
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assert(pair != offsetsFromSP.end() && "Offset from SP unknown for Value");
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return (*pair).second;
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}
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void
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MachineCodeForMethod::dump() const
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{
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cout << "\n" << method->getReturnType()
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<< " \"" << method->getName() << "\"" << endl;
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for (Method::const_iterator BI = method->begin(); BI != method->end(); ++BI)
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{
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BasicBlock* bb = *BI;
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cout << "\n"
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<< (bb->hasName()? bb->getName() : "Label")
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<< " (" << bb << ")" << ":"
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<< endl;
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MachineCodeForBasicBlock& mvec = bb->getMachineInstrVec();
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for (unsigned i=0; i < mvec.size(); i++)
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cout << "\t" << *mvec[i];
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}
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cout << endl << "End method \"" << method->getName() << "\""
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<< endl << endl;
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}
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