[PATCH] Allow dllimport/dllexport on inline functions and get the linkage right

[Reid Kleckner]

================
Comment at: lib/CodeGen/CodeGenModule.cpp:2002-2006
@@ -1999,6 +2001,7 @@
 
   // If required by the ABI, give definitions of static data members with inline
   // initializers at least linkonce_odr linkage.
   if (getCXXABI().isInlineInitializedStaticDataMemberLinkOnce() &&
       isa<VarDecl>(D) &&
       isVarDeclInlineInitializedStaticDataMember(cast<VarDecl>(D)))
+    return DiscardableODRLinkage;
----------------
Hm, I think I wrote this.  I probably should have pushed this up into ASTContext::GetGVALinkageForVariable() to make it return GVA_StrongODR.

http://reviews.llvm.org/D3772