[llvm-bugs] [Bug 31683] New: Missed deadcode elimination with function pointers

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31683

            Bug ID: 31683
           Summary: Missed deadcode elimination with function pointers
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: LLVM Codegen
          Assignee: unassignedclangbugs at nondot.org
          Reporter: eric.huhtala at gmail.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

See here: https://godbolt.org/g/xQD64y

If I uncomment the first call, clang determines that it's all deadcode, and
generates the same "xor eax, eax" as gcc. With the first call commented out,
clang still assigns to the array.

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