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a9902daa5c
Check fields from `MDLocalVariable` and `MDGlobalVariable` and change the accessors to downcast to the right types. `getType()` still returns `Metadata*` since it could be an `MDString`-based reference. Since local variables require non-null scopes, I also updated `LLParser` to require a `scope:` field. A number of testcases had grown bitrot and started failing with this patch; I committed them separately in r233349. If I just broke your out-of-tree testcases, you're probably hitting similar problems (so have a look there). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233389 91177308-0d34-0410-b5e6-96231b3b80d8
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