[all-commits] [llvm/llvm-project] 236fbf: [GlobalStatus] Skip non-pointer dead constant users

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 236fbf571dc6cebcb81ac5187a170c8de6d5bc0e
      https://github.com/llvm/llvm-project/commit/236fbf571dc6cebcb81ac5187a170c8de6d5bc0e
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2022-02-01 (Tue, 01 Feb 2022)

  Changed paths:
    M llvm/lib/Transforms/Utils/GlobalStatus.cpp
    A llvm/test/Transforms/GlobalOpt/dead-constant-user.ll

  Log Message:
  -----------
  [GlobalStatus] Skip non-pointer dead constant users

Constant expressions with a non-pointer result type used an early
exit that bypassed the later dead constant user check, and resulted
in different optimization outcomes depending on whether dead users
were present or not.

This fixes the issue reported in https://reviews.llvm.org/D117223#3287039.