[Bug rtl-optimization/48156] [4.6 Regression] wrong code with -fcrossjumping

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48156

--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-26 09:21:36 UTC ---
Author: jakub
Date: Sat Mar 26 09:21:34 2011
New Revision: 171547

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=171547
Log:
    Backport from mainline
    2011-03-20  Jakub Jelinek  <jakub@redhat.com>

    PR rtl-optimization/48156
    * df-core.c (df_get_bb_dirty): Use df_lr if df_live is NULL,
    assume df and df_lr are not NULL.

    * gcc.dg/pr48156.c: New test.

Added:
    branches/gcc-4_6-branch/gcc/testsuite/gcc.dg/pr48156.c
Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/df-core.c
    branches/gcc-4_6-branch/gcc/testsuite/ChangeLog