rL306267

rL306267

commit 5a057dc8edbb63887f8c611dd8ddf1b76997f07c
Author: Chandler Carruth <chandlerc@gmail.com>
Date:   Mon Jun 26 03:31:31 2017 +0000

    [InstCombine] Factor the logic for propagating !nonnull and !range
    metadata out of InstCombine and into helpers.

    NFC, this just exposes the logic used by InstCombine when propagating
    metadata from one load instruction to another. The plan is to use this
    in SROA to address PR32902.

    If anyone has better ideas about how to factor this or name variables,
    I'm all ears, but this seemed like a pretty good start and lets us make
    progress on the PR.

    This is based on a patch by Ariel Ben-Yehuda (D34285).

    git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@306267 91177308-0d34-0410-b5e6-96231b3b80d8

Gbp-Pq: Name rL306267.diff