[LLVMdev] Multi-instruction patterns, tablegen and chains

David Greene dag at cray.com
Mon Nov 10 12:45:58 PST 2008

On Monday 03 November 2008 19:42, Dan Gohman wrote:

[Been on jury duty, catching up on things...]

> I think it would be useful to have a way to explicitly tell
> tblgen which node(s) in the output pattern to hook up the chain(s)
> to. I believe this is related to a problem David Greene is seeing,
> where he has a case involving multiple chains.

Yes, it sounds like a similar issue.  I have a patch that I hope to post this 
week to start some more discussion.

I'll have to look at your ideas more closely.  I'm still confused by what 
tblgen tries to do and what chains should be inserted where...


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