[all-commits] [llvm/llvm-project] 7f92d6: [ThinLTO] Fix bug when importing writeonly variables

[eleviant via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 7f92d66f378574ab2a02935b6614560ae9000539
      https://github.com/llvm/llvm-project/commit/7f92d66f378574ab2a02935b6614560ae9000539
  Author: evgeny <eleviant at accesssoftek.com>
  Date:   2019-11-08 (Fri, 08 Nov 2019)

  Changed paths:
    M llvm/lib/IR/ModuleSummaryIndex.cpp
    M llvm/lib/Transforms/IPO/FunctionImport.cpp
    M llvm/lib/Transforms/Utils/FunctionImportUtils.cpp
    A llvm/test/ThinLTO/X86/Inputs/writeonly-with-refs.ll
    A llvm/test/ThinLTO/X86/writeonly-with-refs.ll

  Log Message:
  -----------
  [ThinLTO] Fix bug when importing writeonly variables

Patch enables import of write-only variables with non-trivial initializers
to fix linker errors. Initializers of imported variables are converted to
'zeroinitializer' to avoid promotion of referenced objects.

Differential revision: https://reviews.llvm.org/D70006