[all-commits] [llvm/llvm-project] 7d9a16: [ADT] Allow IsSizeLessThanThresholdT for incomplet...

[Yevgeny Rouban via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 7d9a16241fdd800a394e5cb4ecdf76f6bb8c9d9f
      https://github.com/llvm/llvm-project/commit/7d9a16241fdd800a394e5cb4ecdf76f6bb8c9d9f
  Author: Yevgeny Rouban <yrouban at azul.com>
  Date:   2020-08-21 (Fri, 21 Aug 2020)

  Changed paths:
    M llvm/include/llvm/ADT/FunctionExtras.h

  Log Message:
  -----------
  [ADT] Allow IsSizeLessThanThresholdT for incomplete types. NFC

If the type T is incomplete then sizeof(T) results in C++ compilation error at line:
  static constexpr bool value = sizeof(T) <= (2 * sizeof(void *));

This patch allows incomplete types in parameters of function. Example:
  using SomeFunc = void(SomeIncompleteType &);
  llvm::unique_function<SomeFuncType> SomeFunc;

Reviewers: DaniilSuchkov, vvereschaka

Differential Revision: https://reviews.llvm.org/D81554