[Bug rtl-optimization/50340] [4.7 Regression] Fails to build SPEC 2000 176.gcc

[amonakov at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50340

--- Comment #3 from Alexander Monakov <amonakov at gcc dot gnu.org> 2011-10-19 
12:46:48 UTC ---
Author: amonakov
Date: Wed Oct 19 12:46:44 2011
New Revision: 180186

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=180186
Log:
2011-10-19  Andrey Belevantsev  <a...@ispras.ru>

    PR rtl-optimization/50340
    * sel-sched-ir.c (update_target_availability): LHS register
    availability is not known if the unavailable LHS of the other
    expression is a different register.

    * gcc.dg/pr50340.c: New.


Added:
    trunk/gcc/testsuite/gcc.dg/pr50340.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/sel-sched-ir.c
    trunk/gcc/testsuite/ChangeLog