haifa-sched.c (ok_for_early_schedule): New function.

        * haifa-sched.c (ok_for_early_schedule): New function.
        (early_queue_to_ready): New function.
        (schedule_block): Allow early removal of insns from Q.
        (schedule_insn): Update INSN_TICK in case of premature
        issue.
        * common.opt (sched_stalled_insns): New flag.
        (sched_stalled_insns_dep): New flag.
        * flags.h: Same above flags.
        * opts.c: Same as above.
        * toplev.c: Same as above.
        * target.h (targetm.sched.is_costly_dependence): New
        hook.
        * target-def.h: Same as above.
        * config/rs6000/rs6000.h: (rs6000_sched_costly_dep):
        Support new flag -msched-costly-dep.
        (DEFAULT_SCHED_COSTLY_DEP): Define.
        * config/rs6000/rs6000.c:
        (rs6000_is_costly_dependence): New function.
        (is_load_insn, is_store_insn): New functions.
        (is_load_insn1, is_store_insn1, is_mem_ref): New
        functions.
        * doc/invoke.texi (-fsched-stalled-insns-dep)
        (-fsched-stalled-insns, -msched-costly-dep): Document
        options.
        * doc/tm.texi (is_costly_dependence): Define new
        scheduler target hook.

From-SVN: r72261

1 files changed, 18 insertions, 0 deletions

diff --git a/gcc/opts.c b/gcc/opts.c
index c4c5b9f..dc489e1 100644
--- a/gcc/opts.c
+++ b/gcc/opts.c
@@ -1264,6 +1264,24 @@ common_handle_option (size_t scode, const char *arg,
       flag_schedule_insns_after_reload = value;
       break;
 
+    case OPT_fsched_stalled_insns:
+      flag_sched_stalled_insns = value;
+      break;
+
+    case OPT_fsched_stalled_insns_:
+      flag_sched_stalled_insns = value;
+      if (flag_sched_stalled_insns == 0)
+	flag_sched_stalled_insns = -1;
+      break;
+
+    case OPT_fsched_stalled_insns_dep:
+      flag_sched_stalled_insns_dep = 1;
+      break;
+
+    case OPT_fsched_stalled_insns_dep_:
+      flag_sched_stalled_insns_dep = value;
+      break;
+
     case OPT_fshared_data:
       flag_shared_data = value;
       break;