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Adding support to clone MachineInstr

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13661 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tanya Lattner 2004-05-23 19:35:12 +00:00
parent 8e0262f0ed
commit 466b534a57
2 changed files with 32 additions and 1 deletions
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14
include/llvm/CodeGen/MachineInstr.h
View File

@ -172,6 +172,7 @@ public:
contents.SymbolName = new std::string(M.getSymbolName());
}
~MachineOperand() {
if (isExternalSymbol())
delete contents.SymbolName;
@ -367,7 +368,9 @@ class MachineInstr {
// OperandComplete - Return true if it's illegal to add a new operand
bool OperandsComplete() const;
MachineInstr(const MachineInstr &); // DO NOT IMPLEMENT
//Constructor used by clone() method
MachineInstr(const MachineInstr&);
void operator=(const MachineInstr&); // DO NOT IMPLEMENT
// Intrusive list support
@ -395,6 +398,9 @@ public:
const MachineBasicBlock* getParent() const { return parent; }
MachineBasicBlock* getParent() { return parent; }
//void setParent(const MachineBasicBlock *MBB) { parent = MBB; }
void setParent(MachineBasicBlock *MBB) { parent = MBB; }
/// getOpcode - Returns the opcode of this MachineInstr.
///
const int getOpcode() const { return Opcode; }
@ -455,6 +461,12 @@ public:
MachineOperand::MO_VirtualRegister, V);
}
//Clone Instruction
//Create a copy of 'this' instruction that is
//identical in all ways except the following: The instruction has no
//parent The instruction has no name
MachineInstr* clone();
//
// Debugging support
//

19
lib/CodeGen/MachineInstr.cpp
View File

@ -69,11 +69,29 @@ MachineInstr::MachineInstr(MachineBasicBlock *MBB, short opcode,
MBB->push_back(this); // Add instruction to end of basic block!
}
///MachineInstr ctor - Copies MachineInstr arg exactly
MachineInstr::MachineInstr(const MachineInstr &MI) {
Opcode = MI.getOpcode();
numImplicitRefs = MI.getNumImplicitRefs();
//Add operands
for(unsigned i=0; i < MI.getNumOperands(); ++i)
operands.push_back(MachineOperand(MI.getOperand(i)));
}
MachineInstr::~MachineInstr()
{
LeakDetector::removeGarbageObject(this);
}
///clone - Create a copy of 'this' instruction that is identical in
///all ways except the following: The instruction has no parent The
///instruction has no name
MachineInstr* MachineInstr::clone() {
MachineInstr* newInst = new MachineInstr(*this);
}
/// OperandComplete - Return true if it's illegal to add a new operand
///
bool MachineInstr::OperandsComplete() const {
@ -93,6 +111,7 @@ void MachineInstr::replace(short opcode, unsigned numOperands) {
Opcode = opcode;
operands.clear();
operands.resize(numOperands, MachineOperand());
}
void MachineInstr::SetMachineOperandVal(unsigned i,