Be sure to grab weak functions too, and make implicit defs comments


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32308 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Alpha/AlphaAsmPrinter.cpp b/lib/Target/Alpha/AlphaAsmPrinter.cpp
index 0f82b03..f4540db 100644
--- a/lib/Target/Alpha/AlphaAsmPrinter.cpp
+++ b/lib/Target/Alpha/AlphaAsmPrinter.cpp
@@ -285,6 +285,13 @@
       }
     }
 
+  for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I)
+    if (I->hasExternalWeakLinkage()) {
+      O << "\n\n";
+      std::string name = Mang->getValueName(I);
+      O << "\t.weak " << name << "\n";
+    }
+
   AsmPrinter::doFinalization(M);
   return false;
 }