From: Bill Wendling <isanbard@gmail.com>
Date: Tue, 3 Apr 2012 10:50:09 +0000 (+0000)
Subject: Reserve space for the eventual filling of the vector. This gives a small speedup.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f563fc35c89b7518baf2eb6580bd72041e39651b;p=oota-llvm.git

Reserve space for the eventual filling of the vector. This gives a small speedup.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153949 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/VMCore/Metadata.cpp b/lib/VMCore/Metadata.cpp
index e3a08d4949c..46363eed525 100644
--- a/lib/VMCore/Metadata.cpp
+++ b/lib/VMCore/Metadata.cpp
@@ -551,17 +551,16 @@ getAllMetadataOtherThanDebugLocImpl(SmallVectorImpl<std::pair<unsigned,
          getContext().pImpl->MetadataStore.count(this) &&
          "Shouldn't have called this");
   const LLVMContextImpl::MDMapTy &Info =
-  getContext().pImpl->MetadataStore.find(this)->second;
+    getContext().pImpl->MetadataStore.find(this)->second;
   assert(!Info.empty() && "Shouldn't have called this");
-  
+  Result.reserve(Info.size());
   Result.append(Info.begin(), Info.end());
-  
+
   // Sort the resulting array so it is stable.
   if (Result.size() > 1)
     array_pod_sort(Result.begin(), Result.end());
 }
 
-
 /// clearMetadataHashEntries - Clear all hashtable-based metadata from
 /// this instruction.
 void Instruction::clearMetadataHashEntries() {