[Bug rtl-optimization/48156] [4.6/4.7 Regression] wrong code with -fcrossjumping

[jakub at gcc dot gnu.org]

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

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-20 15:25:59 UTC ---
Author: jakub
Date: Sun Mar 20 15:25:55 2011
New Revision: 171195

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=171195
Log:
    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:
    trunk/gcc/testsuite/gcc.dg/pr48156.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/df-core.c
    trunk/gcc/testsuite/ChangeLog