debuginfo: Unified namespace generation approach for crate-local and external items. Fixed bug related to LLVM metadata uniquing.

Author: michaelwoerister

src/librustc/lib/llvm.rs

@@ -1968,7 +1968,8 @@ pub mod llvm {
                                              DerivedFrom: DIType,
                                              Elements: DIArray,
                                              RunTimeLang: c_uint,
-                                             VTableHolder: ValueRef)
+                                             VTableHolder: ValueRef,
+                                             UniqueId: *c_char)
                                              -> DICompositeType;
 
         #[fast_ffi]

src/librustc/middle/trans/base.rs

@@ -3119,11 +3119,6 @@ pub fn trans_crate(sess: session::Session,
                                      symbol_hasher,
                                      link_meta,
                                      analysis.reachable);
-
-    if ccx.sess.opts.debuginfo {
-        debuginfo::initialize(ccx, &crate);
-    }
-
     {
         let _icx = push_ctxt("text");
         trans_mod(ccx, &crate.module);