Reduce allocation of temporary values on heap.

- Use `std::move` while inserting temporary results into vectors.
- Change `push_back` to `emplace_back` where appropriate.

1 files changed, 3 insertions, 4 deletions

diff --git a/Source/cmComputeLinkDepends.cxx b/Source/cmComputeLinkDepends.cxx
index d9efc2e..354de36 100644
--- a/Source/cmComputeLinkDepends.cxx
+++ b/Source/cmComputeLinkDepends.cxx
@@ -285,9 +285,9 @@ std::map<std::string, int>::iterator cmComputeLinkDepends::AllocateLinkEntry(
     item, static_cast<int>(this->EntryList.size()));
   std::map<std::string, int>::iterator lei =
     this->LinkEntryIndex.insert(index_entry).first;
-  this->EntryList.push_back(LinkEntry());
+  this->EntryList.emplace_back();
   this->InferredDependSets.push_back(nullptr);
-  this->EntryConstraintGraph.push_back(EdgeList());
+  this->EntryConstraintGraph.emplace_back();
   return lei;
 }
 
@@ -472,8 +472,7 @@ void cmComputeLinkDepends::AddVarLinkEntries(int depender_index,
 
       // If the library is meant for this link type then use it.
       if (llt == GENERAL_LibraryType || llt == this->LinkType) {
-        cmLinkItem item(d, this->FindTargetToLink(depender_index, d));
-        actual_libs.push_back(item);
+        actual_libs.emplace_back(d, this->FindTargetToLink(depender_index, d));
       } else if (this->OldLinkDirMode) {
         cmLinkItem item(d, this->FindTargetToLink(depender_index, d));
         this->CheckWrongConfigItem(item);