[Bug rtl-optimization/39914] [4.4 Regression] 96% performance regression in floating point code; part of the problem started 2009/03/12-13

[uros at gcc dot gnu dot org]

------- Comment #15 from uros at gcc dot gnu dot org  2009-05-03 19:40 -------
Subject: Bug 39914

Author: uros
Date: Sun May  3 19:40:35 2009
New Revision: 147081

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=147081
Log:
        Backport from mainline:
        2009-04-28  Uros Bizjak  <ubizjak@gmail.com>

        PR rtl-optimization/39914
        * ira-conflicts.c (ira_build_conflicts): Prohibit call used
        registers for allocnos created from user-defined variables only
        when not optimizing.


Modified:
    branches/gcc-4_4-branch/gcc/ChangeLog
    branches/gcc-4_4-branch/gcc/ira-conflicts.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39914