[llvm-bugs] [Bug 36187] New: ThinLTO inlines variables that should be discarded

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=36187

            Bug ID: 36187
           Summary: ThinLTO inlines variables that should be discarded
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Linker
          Assignee: unassignedbugs at nondot.org
          Reporter: grimar at accesssoftek.com
                CC: llvm-bugs at lists.llvm.org

Created attachment 19790
  --> https://bugs.llvm.org/attachment.cgi?id=19790&action=edit
testcase

It is similar PR35938, but about variables now.

In the attached testcase (based on testcase from PR mentioned)
each file has a different weak variable foo.

The first file is compiled to ELF. The second one is compiled to bitcode. The
linker selects the variable foo from the first (ELF) object and LTO is expected
to drop the second one. Instead of that it inlines it currently.

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