Go patch commited: Set DECL_NAMELESS for temporaries

[Ian Lance Taylor via Gcc-patches]

This patch to the Go frontend sets DECL_NAMELESS for temporary
variables.  This is consistent with what create_tmp_var does, but is
used for cases where we can't use create_tmp_var.  Bootstrapped and
ran Go testsuite on x86_64-pc-linux-gnu.  Committed to mainline.

Ian

* go-gcc.cc (Gcc_backend::static_chain_variable): Set
DECL_NAMELESS on the new decl.
(Gcc_backend::temporary_variable): Likewise.
(Gcc_backend::function): Set DECL_NAMELESS on the result decl.

diff --git a/gcc/go/go-gcc.cc b/gcc/go/go-gcc.cc
index 41f309e7294..f812796c959 100644
--- a/gcc/go/go-gcc.cc
+++ b/gcc/go/go-gcc.cc
@@ -2853,6 +2853,7 @@ Gcc_backend::static_chain_variable(Bfunction* function, 
const std::string& name,
   TREE_USED(decl) = 1;
   DECL_ARTIFICIAL(decl) = 1;
   DECL_IGNORED_P(decl) = 1;
+  DECL_NAMELESS(decl) = 1;
   TREE_READONLY(decl) = 1;
 
   struct function *f = DECL_STRUCT_FUNCTION(fndecl);
@@ -2912,6 +2913,7 @@ Gcc_backend::temporary_variable(Bfunction* function, 
Bblock* bblock,
                       type_tree);
       DECL_ARTIFICIAL(var) = 1;
       DECL_IGNORED_P(var) = 1;
+      DECL_NAMELESS(var) = 1;
       TREE_USED(var) = 1;
       DECL_CONTEXT(var) = decl;
 
@@ -3290,6 +3292,7 @@ Gcc_backend::function(Btype* fntype, const std::string& 
name,
           build_decl(location.gcc_location(), RESULT_DECL, NULL_TREE, restype);
       DECL_ARTIFICIAL(resdecl) = 1;
       DECL_IGNORED_P(resdecl) = 1;
+      DECL_NAMELESS(resdecl) = 1;
       DECL_CONTEXT(resdecl) = decl;
       DECL_RESULT(decl) = resdecl;
     }