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Revert 2002-05-02 change
- From: "David S. Miller" <davem at redhat dot com>
- To: gcc-patches at gcc dot gnu dot org
- Cc: rth at redhat dot com
- Date: Fri, 03 May 2002 17:24:13 -0700 (PDT)
- Subject: Revert 2002-05-02 change
Because we've killed off DFA cycle display, Richard's fix
from 2002-05-02 to deal with those bogons is no longer needed.
Installed as follows on the mainline.
2002-05-03 David S. Miller <davem@redhat.com>
* haifa-sched.c (rank_for_schedule): Revert 2002-05-02 change,
no longer needed.
--- haifa-sched.c.~2~ Fri May 3 17:18:10 2002
+++ haifa-sched.c Fri May 3 17:29:44 2002
@@ -852,7 +852,7 @@ rank_for_schedule (x, y)
{
rtx tmp = *(const rtx *) y;
rtx tmp2 = *(const rtx *) x;
- rtx link, lsi;
+ rtx link;
int tmp_class, tmp2_class, depend_count1, depend_count2;
int val, priority_val, weight_val, info_val;
@@ -871,28 +871,23 @@ rank_for_schedule (x, y)
return info_val;
/* Compare insns based on their relation to the last-scheduled-insn. */
- for (lsi = last_scheduled_insn;
- lsi && INSN_UID (lsi) >= old_max_uid;
- lsi = PREV_INSN (lsi))
- continue;
-
- if (lsi)
+ if (last_scheduled_insn)
{
/* Classify the instructions into three classes:
1) Data dependent on last schedule insn.
2) Anti/Output dependent on last scheduled insn.
3) Independent of last scheduled insn, or has latency of one.
Choose the insn from the highest numbered class if different. */
- link = find_insn_list (tmp, INSN_DEPEND (lsi));
- if (link == 0 || insn_cost (lsi, link, tmp) == 1)
+ link = find_insn_list (tmp, INSN_DEPEND (last_scheduled_insn));
+ if (link == 0 || insn_cost (last_scheduled_insn, link, tmp) == 1)
tmp_class = 3;
else if (REG_NOTE_KIND (link) == 0) /* Data dependence. */
tmp_class = 1;
else
tmp_class = 2;
- link = find_insn_list (tmp2, INSN_DEPEND (lsi));
- if (link == 0 || insn_cost (lsi, link, tmp2) == 1)
+ link = find_insn_list (tmp2, INSN_DEPEND (last_scheduled_insn));
+ if (link == 0 || insn_cost (last_scheduled_insn, link, tmp2) == 1)
tmp2_class = 3;
else if (REG_NOTE_KIND (link) == 0) /* Data dependence. */
tmp2_class = 1;