[Bug ipa/59469] [4.8/4.9 Regression] LLVM build failure with gcc LTO

[trippels at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59469

--- Comment #44 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
diff --git a/gcc/lto/lto-partition.c b/gcc/lto/lto-partition.c
index da76b10511f0..e47679239d84 100644
--- a/gcc/lto/lto-partition.c
+++ b/gcc/lto/lto-partition.c
@@ -97,7 +97,7 @@ get_symbol_class (symtab_node *node)
   /* Linker discardable symbols are duplicated to every use unless they are
      keyed.
      Keyed symbols or those.  */
-  if (DECL_ONE_ONLY (node->decl)
+  if ((DECL_COMDAT (node->decl) || DECL_ONE_ONLY (node->decl))
       && !node->force_output
       && !node->forced_by_abi
       && !symtab_used_from_object_file_p (node))

fixes the issue for me. With this LLVM-3.4 now compiles fine with LTO. 
(LLVM trunk build still fails, but it looks like an LLVM bug to me.)