Use emplace_back to replace size() and resize().
Use emplace_back to replace size() and resize().

Summary: This speeds-up thin-link for ~29% for large programs.

Reviewers: tejohnson

Reviewed By: tejohnson

Subscribers: grandinj, sanjoy, llvm-commits

Differential Revision: https://reviews.llvm.org/D35145

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@307543 91177308-0d34-0410-b5e6-96231b3b80d8

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