Take the fast path for any named value and any GlobalValue, which doesn't
need TypePrinting despite being a subclass of Constant. This fixes
compile-time problems especially visible on 403.gcc when -asm-verbose is
enabled.

llvm-svn: 78951
diff --git a/llvm/lib/VMCore/AsmWriter.cpp b/llvm/lib/VMCore/AsmWriter.cpp
index 8270f17..35aae41 100644
--- a/llvm/lib/VMCore/AsmWriter.cpp
+++ b/llvm/lib/VMCore/AsmWriter.cpp
@@ -1233,7 +1233,8 @@
 
   // Fast path: Don't construct and populate a TypePrinting object if we
   // won't be needing any types printed.
-  if (!PrintType && !isa<Constant>(V)) {
+  if (!PrintType &&
+      (!isa<Constant>(V) || V->hasName() || isa<GlobalValue>(V))) {
     WriteAsOperandInternal(Out, V, 0, 0);
     return;
   }