http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51635
--- Comment #5 from Markus Trippelsdorf <markus at trippelsdorf dot de>
2011-12-20 15:31:47 UTC ---
(In reply to comment #4)
> Doesn't work. Instead testing a similar
>
> Index: gcc/lto/lto.c
> ===================================================================
> --- gcc/lto/lto.c (revision 182525)
> +++ gcc/lto/lto.c (working copy)
> @@ -845,6 +845,14 @@ uniquify_nodes (struct data_in *data_in,
> if (ix < i)
> lto_fixup_types (f2);
> streamer_tree_cache_insert_at (cache, f1, ix);
> + /* Make sure that the type of a TYPE_DECL refers
> + to the type decl that prevails in the prevailing
> + record or union type. */
> + if (TREE_CODE (f1) == TYPE_DECL)
> + {
> + tree f1t = gimple_register_type (TREE_TYPE (f1));
> + TYPE_NAME (f1t) = f1;
> + }
> }
> }
This one is extremely slow. lto1 has already used 12min of CPU time when
linking libxul and is still running... (3min is normal)
"perf top" shows:
27.92% lto1 [.] lto_read_decls
14.79% lto1 [.] htab_find_slot_with_hash
9.37% lto1 [.] gimple_type_eq
6.39% libc-2.14.90.so [.] _int_malloc
5.60% [kernel] [k] 0xffffffff81037d72
4.80% lto1 [.] gtc_visit
3.68% libc-2.14.90.so [.] memset
