[PATCH] Use -ggnu-pubnames with -gsplit-dwarf

[Cary Coutant]

This patch forces the use of -ggnu-pubnames when using -gsplit-dwarf.
This is necessary so that the gold linker can generate .gdb_index
version 7.

No new regressions. Committed as trivial (has no effect if you're not
using -gsplit-dwarf).

-cary

2014-05-13  Cary Coutant  <ccout...@google.com>

gcc/
        * opts.c (finish_options): Use -ggnu-pubnames with -gsplit-dwarf.

Index: opts.c
===================================================================
--- opts.c      (revision 210389)
+++ opts.c      (working copy)
@@ -857,9 +857,9 @@ finish_options (struct gcc_options *opts
     maybe_set_param_value (PARAM_MAX_STORES_TO_SINK, 0,
                            opts->x_param_values, opts_set->x_param_values);
 
-  /* The -gsplit-dwarf option requires -gpubnames.  */
+  /* The -gsplit-dwarf option requires -ggnu-pubnames.  */
   if (opts->x_dwarf_split_debug_info)
-    opts->x_debug_generate_pub_sections = 1;
+    opts->x_debug_generate_pub_sections = 2;
 }
 
 #define LEFT_COLUMN    27