[all-commits] [llvm/llvm-project] 77bc5c: Fix possible self assign issue for DIEValue

[XinWang10 via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 77bc5cc658a3b57a1fffbcb0490988ce7047d5b9
      https://github.com/llvm/llvm-project/commit/77bc5cc658a3b57a1fffbcb0490988ce7047d5b9
  Author: Wang, Xin10 <xin10.wang at intel.com>
  Date:   2023-05-08 (Mon, 08 May 2023)

  Changed paths:
    M llvm/include/llvm/CodeGen/DIE.h

  Log Message:
  -----------
  Fix possible self assign issue for DIEValue

In DIEValue's operator assignment constructor, it didn't identify if
the two obj is the same.
I add code to identify them so that it will work correctly when we do
self assign here.

Reviewed By: skan

Differential Revision: https://reviews.llvm.org/D150020