[Bug rtl-optimization/34012] [4.3 Regression] Pessimization caused by fwprop

[jakub at gcc dot gnu dot org]

------- Comment #10 from jakub at gcc dot gnu dot org  2007-11-09 13:03 -------
Subject: Bug 34012

Author: jakub
Date: Fri Nov  9 13:02:25 2007
New Revision: 130043

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130043
Log:
        PR rtl-optimization/34012
        * fwprop.c (try_fwprop_subst): Do not replace if the new
        SET_SRC has a higher cost than the old one.

        * gcc.target/i386/pr34012.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr34012.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fwprop.c
    trunk/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34012