Preserve nonnull metadata on Loads through SROA & mem2reg.
Summary:
https://llvm.org/bugs/show_bug.cgi?id=31142 :
SROA was dropping the nonnull metadata on loads from allocas that got optimized out. This patch simply preserves nonnull metadata on loads through SROA and mem2reg.
Reviewers: chandlerc, efriedma
Reviewed By: efriedma
Subscribers: hfinkel, spatel, efriedma, arielb1, davide, llvm-commits
Differential Revision: https://reviews.llvm.org/D27114
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@298540 91177308-0d34-0410-b5e6-96231b3b80d8
