[Bug rtl-optimization/42294] [4.5 Regression] ICE in code_motion_path_driver for 416.gamess

[abel at gcc dot gnu dot org]

------- Comment #12 from abel at gcc dot gnu dot org  2010-08-24 08:55 -------
Subject: Bug 42294

Author: abel
Date: Tue Aug 24 08:55:33 2010
New Revision: 163503

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=163503
Log:
Backport from mainline:
        PR rtl-optimization/42294
         * sel-sched.c (try_replace_dest_reg): When chosen register
         and original register is the same, do not bail out early, but
         still check all original insns for validity of replacing destination
         register.  Set EXPR_TARGET_AVAILABLE to 1 before leaving function
         in this case.


Added:
    branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/pr42249.c
Modified:
    branches/gcc-4_4-branch/gcc/ChangeLog
    branches/gcc-4_4-branch/gcc/sel-sched.c
    branches/gcc-4_4-branch/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42294