Implement GNU asm-label extension support in CodeGen. This fixes
scimark2 on Darwin.

 - Added Sema support for asm-label on variables, which I forgot before.

 - Update CodeGen to use GlobalDeclMap to determine if static Decls
   require emission (instead of LLVM module name lookup). Important
   since the Decl name and the LLVM module name can differ.

 - <rdar://problem/6116729>


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54388 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed