Eric Beckmann 9e05a2d6d0 Use reference to iterate through string table instead of copying.
Summary: just a quick patch

Subscribers: ruiu, llvm-commits, hiraditya

Differential Revision: https://reviews.llvm.org/D34171

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305324 91177308-0d34-0410-b5e6-96231b3b80d8
2017-06-13 21:05:42 +00:00
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