[Bug target/37488] register allocation spills floats needlessly

[vmakarov at gcc dot gnu dot org]

------- Comment #9 from vmakarov at gcc dot gnu dot org  2009-07-22 22:00 -------
Subject: Bug 37488

Author: vmakarov
Date: Wed Jul 22 22:00:17 2009
New Revision: 149962

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=149962
Log:
2009-07-22  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/37488
        * ira-lives.c (bb_has_abnormal_call_pred): New function.
        (process_bb_node_lives): Use it.

        * ira.c (setup_cover_and_important_classes): Don't setup
        ira_important_class_nums.  Add cover classes to the end of
        important classes.
        (cover_class_order, comp_reg_classes_func,
        reorder_important_classes): New.
        (find_reg_class_closure): Use reorder_important_classes.

        * config/i386/i386.h (IRA_COVER_CLASSES): Remove.

        * config/i386/i386.c (i386_ira_cover_classes): New function.
        (TARGET_IRA_COVER_CLASSES): Redefine.

        * doc/tm.texi (TARGET_IRA_COVER_CLASSES): Add a comment about
        importance of order of cover classes in the array.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/config/i386/i386.h
    trunk/gcc/doc/tm.texi
    trunk/gcc/ira-lives.c
    trunk/gcc/ira.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37488