[Bug middle-end/42973] [4.4/4.5 regression] IRA apparently systematically making reload too busy on 2 address instructions with 3 operands

[vmakarov at gcc dot gnu dot org]

------- Comment #7 from vmakarov at gcc dot gnu dot org  2010-02-10 02:07 -------
Subject: Bug 42973

Author: vmakarov
Date: Wed Feb 10 02:07:22 2010
New Revision: 156641

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=156641
Log:
2010-02-09  Vladimir Makarov  <vmakarov@redhat.com>

        PR middle-end/42973
        * ira-conflicts.c (get_dup): Remove.
        (process_reg_shuffles): Add new parameter.  Use it as an
        additional guard for copy generation.
        (add_insn_allocno_copies): Rewrite.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ira-conflicts.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42973