[tree-ssa] reaching def. question

[Devang Patel]

On Mar 16, 2004, at 4:27 PM, law@redhat.com wrote:

> You also have to be damn careful about marking something to be 
> rewritten
> which is used in a mixed PHI node.  ie
>
> a_3 = PHI (a_2, b_1)

This is new to me. When do I expect to see mixed PHI node? An example
would help me to  understand it.

Thank you,
--
Devang