Vlad Tsyrklevich 201a1086cf ELFObjectWriter: Allow one unique symver per symbol ...

Summary:
Only allow a single unique .symver alias per symbol. This matches the
behavior of gas. I noticed that we ignored multiple mismatched symver
directives looking at https://reviews.llvm.org/D45798

Reviewers: pcc, tejohnson, espindola

Reviewed By: pcc

Subscribers: emaste, arichardson, llvm-commits, kcc

Differential Revision: https://reviews.llvm.org/D45845

llvm-svn: 331078

2018-04-27 20:32:34 +00:00

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