Adrian Prantl a5bf2d7003 Fix bitcode upgrade for DIGlobalVariables with a var: field. ...

This is a follow-up to https://reviews.llvm.org/D29349.  It turns out
that NeedUpgradeToDIGlobalVariableExpression is always necessary when
we encountered a version==0 record because it may always be referenced
via a list of globals in a DICompileUnit. My tests weren't good enough
to catch this though. To trigger this case, we need much older bitcode
produced by LLVM around version 3.7.

<rdar://problem/30404262>

Differential Revision: https://reviews.llvm.org/D29693

llvm-svn: 294488

2017-02-08 17:44:43 +00:00

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