[PATCH] D33770: Only generate addcarry node when it is legal.

[Chandler Carruth via Phabricator via llvm-commits]

chandlerc accepted this revision.
chandlerc added a comment.
This revision is now accepted and ready to land.

Ok, this seems like a trivial fix to a breakage, but please spell out in the patch description when you commit it what we discussed on IRC:

- This was uncovered during stage2 of a bootstrap by build bots
- The patch that introduced it has already had other patches land on top and so trying to avoid lots of revert churn
- Working on adding a reduced test case that covers this, but wanted to get the build bots back to green ASAP, will land a test case as soon as one is available.


https://reviews.llvm.org/D33770