[Bug rtl-optimization/11320] [3.3 regression] Scheduler bug

[bernds at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11320

--- Comment #11 from Bernd Schmidt <bernds at gcc dot gnu.org> 2011-07-15 13:20:17 UTC ---
Author: bernds
Date: Fri Jul 15 13:20:10 2011
New Revision: 176315

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=176315
Log:
    Revert
    2003-07-10  Eric Botcazou  <ebotcazou@libertysurf.fr>
    PR rtl-optimization/11320
    * sched-int.h (struct deps) [reg_conditional_sets]: New field.
    (struct sched_info) [compute_jump_reg_dependencies]: New prototype.
    * sched-deps.c (sched_analyze_insn) [JUMP_INSN]: Update call to
    current_sched_info->compute_jump_reg_dependencies. Record which
    registers are used and which registers are set by the jump.
    Clear deps->reg_conditional_sets after a barrier.
    Set deps->reg_conditional_sets if the insn is a COND_EXEC.
    Clear deps->reg_conditional_sets if the insn is not a COND_EXEC.
    (init_deps): Initialize reg_conditional_sets.
    (free_deps): Clear reg_conditional_sets.
    * sched-ebb.c (compute_jump_reg_dependencies): New prototype.
    Mark registers live on entry of the fallthrough block and conditionally
    set as set by the jump. Mark registers live on entry of non-fallthrough
    blocks as used by the jump.
    * sched-rgn.c (compute_jump_reg_dependencies): New prototype.
    Mark new parameters as unused.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/modulo-sched.c
    trunk/gcc/sched-deps.c
    trunk/gcc/sched-ebb.c
    trunk/gcc/sched-int.h
    trunk/gcc/sched-rgn.c