[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

llvm-svn: 195064

1 files changed, 4 insertions, 0 deletions

diff --git a/llvm/lib/IR/Attributes.cpp b/llvm/lib/IR/Attributes.cpp
index bcd324c4ffa..0f2b7a0ebb4 100644
--- a/llvm/lib/IR/Attributes.cpp
+++ b/llvm/lib/IR/Attributes.cpp
@@ -286,7 +286,11 @@ bool Attribute::operator<(Attribute A) const {
 // AttributeImpl Definition
 //===----------------------------------------------------------------------===//
 
+// Pin the vtabels to this file.
 AttributeImpl::~AttributeImpl() {}
+void EnumAttributeImpl::anchor() {}
+void AlignAttributeImpl::anchor() {}
+void StringAttributeImpl::anchor() {}
 
 bool AttributeImpl::hasAttribute(Attribute::AttrKind A) const {
   if (isStringAttribute()) return false;