Adding support to clone MachineInstr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13661 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index 38cd62e..e1e44fd 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -69,11 +69,29 @@
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 @@
Opcode = opcode;
operands.clear();
operands.resize(numOperands, MachineOperand());
+
}
void MachineInstr::SetMachineOperandVal(unsigned i,