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Re: RFA: patch to solve spec2006 degradation reported in 37243


Jeff Law wrote:
Vladimir Makarov wrote:
The following patch solves SPEC2006 degradation reported in PR37243.
The analysis of the problem can be found in

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37243

The patch was successfully bootstrapped and tested on x86_64.

2008-08-30 Vladimir Makarov <vmakarov@redhat.com>

PR rtl-opt/37243

   * ira-int.h (ira_loop_tree_node): Rename mentioned_allocnos to
   all_allocnos.

   * ira-color.c (print_loop_title): Use all_allocnos.
   (color_pass): Ditto.  Don't add border_allocnos.  Check that
   subloop allocno in the correspdoning bitmap all_allocnos.

* ira-emit.c (change_loop): Use all_allocnos.

* ira-build.c (create_loop_tree_nodes, finish_loop_tree_node):
Ditto.
(ira_create_allocno): Set up all_allocnos bit for the created
allocno.
(create_cap_allocno): Remove setting mentioned_allocnos.
(create_insn_allocnos): Ditto.
(remove_unnecessary_allocnos): Use all_allocnos.
(check_allocno_creation): Check that allocnos are in the
corresponding bitmap all_allocnos.
OK. Please install if you haven't done so already.
Thanks. Done.


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