tree 169371fa43374148e017b60623ee1b161d648dbe
parent 6afd9d5ae080f2a81abec65054f58a52b73654ce
author Nikita Popov <nikita.ppv@gmail.com> 1555440916 +0000
committer Nikita Popov <nikita.ppv@gmail.com> 1555440916 +0000

[IR] Add WithOverflowInst class

This adds a WithOverflowInst class with a few helper methods to get
the underlying binop, signedness and nowrap type and makes use of it
where sensible. There will be two more uses in D60650/D60656.

The refactorings are all NFC, though I left some TODOs where things
could be improved. In particular we have two places where add/sub are
handled but mul isn't.

Differential Revision: https://reviews.llvm.org/D60668

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@358512 91177308-0d34-0410-b5e6-96231b3b80d8