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| author | Dorit Naishlos <dorit@il.ibm.com> | 2003-10-09 09:08:37 +0000 |
|---|---|---|
| committer | Dorit Nuzman <dorit@gcc.gnu.org> | 2003-10-09 09:08:37 +0000 |
| commit | 569fa502d175107e774a81965253debe8d9de94b (patch) | |
| tree | cf4b5b0d6fa071cfa3bd81035f628ab846f4673e /gcc/toplev.c | |
| parent | 2df6848e22f1ea6fd8a43284a85986337de4a425 (diff) | |
| download | gcc-569fa502d175107e774a81965253debe8d9de94b.zip gcc-569fa502d175107e774a81965253debe8d9de94b.tar.gz gcc-569fa502d175107e774a81965253debe8d9de94b.tar.bz2 | |
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
Diffstat (limited to 'gcc/toplev.c')
| -rw-r--r-- | gcc/toplev.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/toplev.c b/gcc/toplev.c index 425a0259..bc96c64 100644 --- a/gcc/toplev.c +++ b/gcc/toplev.c @@ -826,6 +826,20 @@ int flag_schedule_speculative = 1; int flag_schedule_speculative_load = 0; int flag_schedule_speculative_load_dangerous = 0; +/* The following flags have an effect during scheduling after register + allocation: + + flag_sched_stalled_insns means that insns can be moved prematurely from the queue + of stalled insns into the ready list. + + flag_sched_stalled_insns_dep controls how many insn groups will be examined + for a dependency on a stalled insn that is candidate for premature removal + from the queue of stalled insns into the ready list (has an effect only if + the flag 'sched_stalled_insns' is set). */ + +int flag_sched_stalled_insns = 0; +int flag_sched_stalled_insns_dep = 1; + int flag_single_precision_constant; /* flag_branch_on_count_reg means try to replace add-1,compare,branch tupple @@ -1069,6 +1083,8 @@ static const lang_independent_options f_options[] = {"sched-spec",&flag_schedule_speculative, 1 }, {"sched-spec-load",&flag_schedule_speculative_load, 1 }, {"sched-spec-load-dangerous",&flag_schedule_speculative_load_dangerous, 1 }, + {"sched-stalled-insns", &flag_sched_stalled_insns, 0 }, + {"sched-stalled-insns-dep", &flag_sched_stalled_insns_dep, 1 }, {"sched2-use-superblocks", &flag_sched2_use_superblocks, 1 }, {"sched2-use-traces", &flag_sched2_use_traces, 1 }, {"branch-count-reg",&flag_branch_on_count_reg, 1 }, |