[ADT] Add relation operators for Optional
authorTim Shen <timshen91@gmail.com>
Thu, 11 Aug 2016 20:10:15 +0000 (20:10 +0000)
committerTim Shen <timshen91@gmail.com>
Thu, 11 Aug 2016 20:10:15 +0000 (20:10 +0000)
commit0fdb2daa8ddf42d50edb74ab0dc1899c86e8366d
tree2873f9865e56f848146fd777ccb9a14e54fe9e1c
parent46cd113c871761c0c4831a44022ac2e1098d7b03
[ADT] Add relation operators for Optional

Summary: Make Optional's behavior the same as the coming std::optional.

Reviewers: dblaikie

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D23178

llvm-svn: 278397
llvm/include/llvm/ADT/Optional.h
llvm/unittests/ADT/OptionalTest.cpp