[all-commits] [llvm/llvm-project] 4852c7: [SCEV] Fix GCC -Wnon-virtual-dtor

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4852c770fe8703145dd2a35395985646ce57a454
      https://github.com/llvm/llvm-project/commit/4852c770fe8703145dd2a35395985646ce57a454
  Author: Fangrui Song <i at maskray.me>
  Date:   2021-09-01 (Wed, 01 Sep 2021)

  Changed paths:
    M llvm/include/llvm/Analysis/ScalarEvolution.h

  Log Message:
  -----------
  [SCEV] Fix GCC -Wnon-virtual-dtor

SCEVPredicate has a friend declaration. The friend can technically call the
protected destructor, so the warning is legitimate. Clang simply doesn't implement
the friend check.

Make the dtor virtual to fix the issue.