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: https://llvm.org/svn/llvm-project/llvm/trunk@307543 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/tools/gold/gold-plugin.cpp b/tools/gold/gold-plugin.cpp
index cf207d9..6d011ba 100644 (file)
--- a/tools/gold/gold-plugin.cpp
+++ b/tools/gold/gold-plugin.cpp
@@ -477,7 +477,7 @@ static ld_plugin_status claim_file_hook(const ld_plugin_input_file *file,
 
   std::unique_ptr<InputFile> Obj = std::move(*ObjOrErr);
 
-  Modules.resize(Modules.size() + 1);
+  Modules.emplace_back();
   claimed_file &cf = Modules.back();
 
   cf.handle = file->handle;