[Bug rtl-optimization/46585] [4.6 Regression] ICE: SIGSEGV in vinsn_create (sel-sched-ir.c:1189) with -fno-dce -fschedule-insns -fselective-scheduling

[amonakov at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46585

--- Comment #8 from Alexander Monakov <amonakov at gcc dot gnu.org> 2010-11-25 
10:05:08 UTC ---
Author: amonakov
Date: Thu Nov 25 10:05:00 2010
New Revision: 167141

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=167141
Log:
    PR rtl-optimization/46585
    * sel-sched-ir.c (return_regset_to_pool): Verify that RS is not NULL.
    (vinsn_init): Skip initialization of dependencies for local NOPs.
    (vinsn_delete): Don't try to free regsets for local NOPs.
        (setup_nop_and_exit_insns): Change definition of nop_pattern.

testsuite:
    * gcc.dg/pr46585.c: New.


Added:
    trunk/gcc/testsuite/gcc.dg/pr46585.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/sel-sched-ir.c
    trunk/gcc/testsuite/ChangeLog