[Bug rtl-optimization/46522] ICE: in reset_sched_cycles_in_current_ebb, at sel-sched.c:7092 with -O3 -fsel-sched-pipelining -fselective-scheduling2 -funroll-loops

["abel at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46522

--- Comment #6 from Andrey Belevantsev <abel at gcc dot gnu.org> 2011-04-07 07:04:10 UTC ---
Author: abel
Date: Thu Apr  7 07:04:02 2011
New Revision: 172088

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=172088
Log:
        Backport from mainline
        2011-01-13  Andrey Belevantsev  <abel@ispras.ru>

        PR rtl-optimization/45352
        * sel-sched.c: Update copyright years.
        (reset_sched_cycles_in_current_ebb): Also recheck the DFA state
        in the advancing loop when we have issued issue_rate insns.

        Backport from mainline
        2010-12-22  Andrey Belevantsev  <abel@ispras.ru>

        PR rtl-optimization/45352
        PR rtl-optimization/46521
        PR rtl-optimization/46522
        * sel-sched.c (reset_sched_cycles_in_current_ebb): Recheck the DFA
state
        on the last iteration of the advancing loop.
        (sel_sched_region_1): Propagate the rescheduling bit to the next block
        also for empty blocks.

        Backport from mainline
        2010-11-08  Andrey Belevantsev  <abel@ispras.ru>

        PR rtl-optimization/45352
        * sel-sched.c (find_best_expr): Do not set pneed_stall when
        the variable_issue hook is not implemented.
        (fill_insns): Remove dead variable stall_iterations.
        (init_seqno_1): Force EBB start for resetting sched cycles on any
        successor blocks of the rescheduled region.
        (sel_sched_region_1): Use bitmap_bit_p instead of bitmap_clear_bit.
        (reset_sched_cycles_in_current_ebb): Add debug printing.
        New variable issued_insns.  Advance state when we have issued
        issue_rate insns.


Added:
    branches/gcc-4_5-branch/gcc/testsuite/gcc.dg/pr45352-1.c
    branches/gcc-4_5-branch/gcc/testsuite/gcc.dg/pr45352-2.c
    branches/gcc-4_5-branch/gcc/testsuite/gcc.dg/pr45352-3.c
    branches/gcc-4_5-branch/gcc/testsuite/gcc.dg/pr45352.c
    branches/gcc-4_5-branch/gcc/testsuite/gcc.dg/pr46521.c
    branches/gcc-4_5-branch/gcc/testsuite/gcc.dg/pr46522.c
    branches/gcc-4_5-branch/gcc/testsuite/gcc.target/i386/pr45352-1.c
    branches/gcc-4_5-branch/gcc/testsuite/gcc.target/i386/pr45352-2.c
    branches/gcc-4_5-branch/gcc/testsuite/gcc.target/i386/pr45352.c
Modified:
    branches/gcc-4_5-branch/gcc/ChangeLog
    branches/gcc-4_5-branch/gcc/sel-sched.c
    branches/gcc-4_5-branch/gcc/testsuite/ChangeLog