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Re: DFA cycle_display
From: Richard Henderson <rth@redhat.com>
Date: Fri, 3 May 2002 17:40:14 -0700
On Fri, May 03, 2002 at 05:19:56PM -0700, David S. Miller wrote:
> -static void
> -ia64_emit_insn_before (insn, before)
> - rtx insn, before;
Prefer you left this, since we'd want to do the same thing
with any NOTE replacement.
Ok, might as well put "you have to implement this here when cycle
display notes exist" comments in the appropriate spots as well.
Installed as follows:
2002-05-03 David S. Miller <davem@redhat.com>
* config/ia64/ia64.c (ia64_emit_insn_before): Put it back.
(rtx_needs_barrier): Delete reference to cycle_display unspec.
(ia64_sched_reorder2): Mention need for cycle display handling
once such notes exist.
--- config/ia64/ia64.c.~1~ Fri May 3 17:54:58 2002
+++ config/ia64/ia64.c Fri May 3 17:58:22 2002
@@ -4602,7 +4602,6 @@ rtx_needs_barrier (x, flags, pred)
case 20: /* mov = ar.bsp */
case 21: /* flushrs */
case 22: /* bundle selector */
- case 23: /* cycle display */
break;
case 24: /* addp4 */
@@ -5159,6 +5158,7 @@ int ia64_final_schedule = 0;
static int itanium_split_issue PARAMS ((const struct ia64_packet *, int));
static rtx ia64_single_set PARAMS ((rtx));
static int insn_matches_slot PARAMS ((const struct ia64_packet *, enum attr_type, int, rtx));
+static void ia64_emit_insn_before PARAMS ((rtx, rtx));
static void maybe_rotate PARAMS ((FILE *));
static void finish_last_head PARAMS ((FILE *, int));
static void rotate_one_bundle PARAMS ((FILE *));
@@ -5481,6 +5481,16 @@ insn_matches_slot (p, itype, slot, insn)
return 0;
}
+/* Like emit_insn_before, but skip cycle_display notes.
+ ??? When cycle display notes are implemented, update this. */
+
+static void
+ia64_emit_insn_before (insn, before)
+ rtx insn, before;
+{
+ emit_insn_before (insn, before);
+}
+
/* When rotating a bundle out of the issue window, insert a bundle selector
insn in front of it. DUMP is the scheduling dump file or NULL. START
is either 0 or 3, depending on whether we want to emit a bundle selector
@@ -5512,7 +5522,7 @@ finish_last_head (dump, start)
fprintf (dump, "// Emitting template before %d: %s\n",
INSN_UID (insn), b->name);
- emit_insn_before (gen_bundle_selector (GEN_INT (bundle_type)), insn);
+ ia64_emit_insn_before (gen_bundle_selector (GEN_INT (bundle_type)), insn);
}
/* We can't schedule more insns this cycle. Fix up the scheduling state
@@ -6372,7 +6382,10 @@ ia64_sched_reorder2 (dump, sched_verbose
abort ();
insn_code = recog_memoized (stop);
- /* Ignore .pred.rel.mutex. */
+ /* Ignore .pred.rel.mutex.
+
+ ??? Update this to ignore cycle display notes too
+ ??? once those are implemented */
if (insn_code == CODE_FOR_pred_rel_mutex
|| insn_code == CODE_FOR_prologue_use)
continue;
@@ -6470,7 +6483,7 @@ ia64_variable_issue (dump, sched_verbose
int t = sched_data.first_slot;
if (t == 0)
t = 3;
- emit_insn_before (gen_insn_group_barrier (GEN_INT (t)), insn);
+ ia64_emit_insn_before (gen_insn_group_barrier (GEN_INT (t)), insn);
init_insn_group_barriers ();
sched_data.last_was_stop = 0;
}