tree 7f7eac731c585694ef29cd61ee11d429567dd2b4
parent e035747475dc32604bc1dc65399c9d66ebdce49c
author Nikita Popov <nikita.ppv@gmail.com> 1549573342 +0000
committer Nikita Popov <nikita.ppv@gmail.com> 1549573342 +0000

[CodeGen] Handle vector UADDO, SADDO, USUBO, SSUBO

This is part of https://bugs.llvm.org/show_bug.cgi?id=40442.

Vector legalization is implemented for the add/sub overflow opcodes.
UMULO/SMULO are also handled as far as legalization is concerned, but
they don't support vector expansion yet (so no tests for them).

The vector result widening implementation is suboptimal, because it
could result in a legalization loop.

Differential Revision: https://reviews.llvm.org/D57639

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@353464 91177308-0d34-0410-b5e6-96231b3b80d8