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

llvm-svn: 153949

llvm/lib/VMCore/Metadata.cpp

@@ -553,7 +553,7 @@ getAllMetadataOtherThanDebugLocImpl(SmallVectorImpl<std::pair<unsigned,
   const LLVMContextImpl::MDMapTy &Info =
     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.
@@ -561,7 +561,6 @@ getAllMetadataOtherThanDebugLocImpl(SmallVectorImpl<std::pair<unsigned,
     array_pod_sort(Result.begin(), Result.end());
 }
 
-
 /// clearMetadataHashEntries - Clear all hashtable-based metadata from
 /// this instruction.
 void Instruction::clearMetadataHashEntries() {