[weak vtables] Remove a bunch of weak vtables

This patch removes most of the trivial cases of weak vtables by pinning them to
a single object file. The memory leaks in this version have been fixed. Thanks
Alexey for pointing them out.

Differential Revision: http://llvm-reviews.chandlerc.com/D2068

Reviewed by Andy

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195064 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 17 insertions, 0 deletions

diff --git a/lib/Support/CommandLine.cpp b/lib/Support/CommandLine.cpp
index a47af27..44a88d8 100644
--- a/lib/Support/CommandLine.cpp
+++ b/lib/Support/CommandLine.cpp
@@ -60,6 +60,8 @@ TEMPLATE_INSTANTIATION(class opt<char>);
 TEMPLATE_INSTANTIATION(class opt<bool>);
 } } // end namespace llvm::cl
 
+// Pin the vtables to this file.
+void GenericOptionValue::anchor() {}
 void OptionValue<boolOrDefault>::anchor() {}
 void OptionValue<std::string>::anchor() {}
 void Option::anchor() {}
@@ -73,6 +75,7 @@ void parser<double>::anchor() {}
 void parser<float>::anchor() {}
 void parser<std::string>::anchor() {}
 void parser<char>::anchor() {}
+void StringSaver::anchor() {}
 
 //===----------------------------------------------------------------------===//
 
diff --git a/lib/Support/YAMLParser.cpp b/lib/Support/YAMLParser.cpp
index 9e50612..9495cd4 100644
--- a/lib/Support/YAMLParser.cpp
+++ b/lib/Support/YAMLParser.cpp
@@ -96,6 +96,15 @@ static EncodingInfo getUnicodeEncoding(StringRef Input) {
 
 namespace llvm {
 namespace yaml {
+/// Pin the vtables to this file.
+void Node::anchor() {}
+void NullNode::anchor() {}
+void ScalarNode::anchor() {}
+void KeyValueNode::anchor() {}
+void MappingNode::anchor() {}
+void SequenceNode::anchor() {}
+void AliasNode::anchor() {}
+
 /// Token - A single YAML token.
 struct Token : ilist_node<Token> {
   enum TokenKind {
diff --git a/lib/Support/YAMLTraits.cpp b/lib/Support/YAMLTraits.cpp
index e2108e5..42bff96 100644
--- a/lib/Support/YAMLTraits.cpp
+++ b/lib/Support/YAMLTraits.cpp
@@ -60,6 +60,11 @@ error_code Input::error() {
   return EC;
 }
 
+// Pin the vtables to this file.
+void Input::HNode::anchor() {}
+void Input::EmptyHNode::anchor() {}
+void Input::ScalarHNode::anchor() {}
+
 bool Input::outputting() const {
   return false;
 }