[all-commits] [llvm/llvm-project] 94948f: [ADT] Make Optional a literal type.

[Varun Gandhi via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 94948f3c929e221214ba8acf419b1cddb61e042e
      https://github.com/llvm/llvm-project/commit/94948f3c929e221214ba8acf419b1cddb61e042e
  Author: Varun Gandhi <varun_gandhi at apple.com>
  Date:   2020-09-01 (Tue, 01 Sep 2020)

  Changed paths:
    M llvm/include/llvm/ADT/Optional.h
    M llvm/unittests/ADT/OptionalTest.cpp

  Log Message:
  -----------
  [ADT] Make Optional a literal type.

This allows returning Optional values from constexpr contexts.

Reviewed By: fhahn, dblaikie, rjmccall

Differential Revision: https://reviews.llvm.org/D86354