Add Target hook to duplicate machine instructions.
Some instructions refer to unique labels, and so cannot be trivially cloned
with CloneMachineInstr.
llvm-svn: 92873
diff --git a/llvm/lib/CodeGen/TailDuplication.cpp b/llvm/lib/CodeGen/TailDuplication.cpp
index fddbebd9..c99c74c 100644
--- a/llvm/lib/CodeGen/TailDuplication.cpp
+++ b/llvm/lib/CodeGen/TailDuplication.cpp
@@ -346,7 +346,7 @@
MachineBasicBlock *PredBB,
MachineFunction &MF,
DenseMap<unsigned, unsigned> &LocalVRMap) {
- MachineInstr *NewMI = MF.CloneMachineInstr(MI);
+ MachineInstr *NewMI = TII->duplicate(MI, MF);
for (unsigned i = 0, e = NewMI->getNumOperands(); i != e; ++i) {
MachineOperand &MO = NewMI->getOperand(i);
if (!MO.isReg())