[PATCH] D29872: Do not legalize large add with addc/adde, introduce addcarry and do it with uaddo/addcarry

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

What I meant was to pull out some of the codegen changes into smaller patches with their own tests that can be reviewed and accepted before this patch.

Then make this patch just about the addition of ADDCARRY and SUBCARRY instead of having to handle so many things at once.


https://reviews.llvm.org/D29872