[LLVMdev] Making Sense of ISel DAG Output

David Greene dag at cray.com
Fri Oct 3 09:10:01 PDT 2008

On Thursday 02 October 2008 19:32, Dan Gohman wrote:

> Looking at your dump() output above, it looks like the pre-selection
> loads have multiple uses, so even though you've managed to match a
> larger pattern that incorporates them, they still need to exist to
> satisfy some other users.

Yes, I looked at that too.  It looks like these other uses end up being
chains to TokenFactor nodes that don't go anywhere.  They're really, truly, 
dead.  Who is supposed to clean those up?


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