[PATCH] MachineVerifier: Don't crash if MachineOperand has no parent

[Quentin Colombet]

I see :).
Looks like the RemoveOperand/addOperand gymnastic may bit someone else.

LGTM.

Q.


================
Comment at: lib/CodeGen/MachineVerifier.cpp:336
@@ +335,3 @@
+          if (Op.getParent() != &MI)
+            report("Instruction has operand with wrong parent set", &MI);
+
----------------
Maybe add a comment saying that we should make sure to use RemoveOperand/addOperand or ChangeTo APIs.

http://reviews.llvm.org/D9355

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