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

[abel at gcc dot gnu.org]

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

--- Comment #10 from Andrey Belevantsev <abel at gcc dot gnu.org> 2011-04-07 
06:56:50 UTC ---
Author: abel
Date: Thu Apr  7 06:56:47 2011
New Revision: 172082

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=172082
Log:
        Backport from mainline
        2010-11-25  Alexander Monakov  <amona...@ispras.ru>

        PR rtl-optimization/46585
        * sel-sched-ir.c (return_regset_to_pool): Verify that RS is not NULL.
        (vinsn_init): Skip computation 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.


Added:
    branches/gcc-4_5-branch/gcc/testsuite/gcc.dg/pr46585.c
Modified:
    branches/gcc-4_5-branch/gcc/ChangeLog
    branches/gcc-4_5-branch/gcc/sel-sched-ir.c
    branches/gcc-4_5-branch/gcc/testsuite/ChangeLog