[LLVMdev] Modifing an operand of MDNode

[Chris Lattner]

On Jun 7, 2010, at 3:35 PM, Junjie Gu wrote:

> I have a MDNode,  and one of its operand is an int.  I'd like to
> assign a new int value to that operand during the llvm optimization.
> What is the right way to do this ?   (There is no setOperand() with
> MDNode class.)

Hi Junjie,

MDNodes are uniqued, so you can't change them.  Just make a new MDNode with the new operand list you want.

-Chris