[all-commits] [llvm/llvm-project] 304027: [ThinLTO] Support aliased GlobalIFunc

[Schrodinger ZHU Yifan via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 304027206c883b61b76465b3c2a139927ea71344
      https://github.com/llvm/llvm-project/commit/304027206c883b61b76465b3c2a139927ea71344
  Author: Schrodinger ZHU Yifan <i at zhuyi.fan>
  Date:   2022-07-20 (Wed, 20 Jul 2022)

  Changed paths:
    M llvm/include/llvm/IR/GlobalIFunc.h
    M llvm/lib/Analysis/ModuleSummaryAnalysis.cpp
    M llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
    M llvm/lib/IR/Globals.cpp
    M llvm/lib/Transforms/IPO/FunctionImport.cpp
    M llvm/lib/Transforms/Utils/FunctionImportUtils.cpp
    A llvm/test/ThinLTO/X86/alias-ifunc.ll

  Log Message:
  -----------
  [ThinLTO] Support aliased GlobalIFunc

Fixes https://github.com/llvm/llvm-project/issues/56290: when an ifunc is
aliased in LTO, clang will attempt to create an alias summary; however, as ifunc
is not included in the module summary, doing so will lead to crash.

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D129009