[all-commits] [llvm/llvm-project] 6d6f35: [ADT] Add makeVisitor to STLExtras.h

[Scott Linder via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6d6f35eb7b92c6dd4478834497752f4e963db16d
      https://github.com/llvm/llvm-project/commit/6d6f35eb7b92c6dd4478834497752f4e963db16d
  Author: Scott Linder <Scott.Linder at amd.com>
  Date:   2021-06-28 (Mon, 28 Jun 2021)

  Changed paths:
    M llvm/include/llvm/ADT/STLExtras.h
    M llvm/unittests/ADT/STLExtrasTest.cpp

  Log Message:
  -----------
  [ADT] Add makeVisitor to STLExtras.h

Relands patch reverted by 61242c0addb120294211d24a97ed89837418cb36
The original patch mistakenly included unrelated tests.

Adds a utility to combine multiple Callables into a single Callable.
This is useful to make constructing a visitor for `std::visit`-like
functions more natural; functions like this will be added in future
patches.

Intended to supercede https://reviews.llvm.org/D99560 by
perfectly-forwarding the combined Callables.

Reviewed By: dblaikie

Differential Revision: https://reviews.llvm.org/D100670