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ia64.c (emit_all_insn_group_barriers): Flush state at barrier insns.

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* config/ia64/ia64.c (emit_all_insn_group_barriers): Flush state
        at barrier insns.  Emit stop bits before barriers.

From-SVN: r45102
This commit is contained in:
Richard Henderson 2001-08-22 01:18:33 -07:00 • committed by Richard Henderson
parent 687eccc06e
commit bd7b9a0f96
2 changed files with 20 additions and 5 deletions
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3
gcc/ChangeLog
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@ -1,5 +1,8 @@
2001-08-21 Richard Henderson <rth@redhat.com>
* config/ia64/ia64.c (emit_all_insn_group_barriers): Flush state
at barrier insns. Emit stop bits before barriers.
* flow.c (flow_find_cross_jump): Don't consider unconditional
return insns for commoning.

22
gcc/config/ia64/ia64.c
View file

@ -4811,13 +4811,25 @@ emit_all_insn_group_barriers (dump, insns)
for (insn = insns; insn; insn = NEXT_INSN (insn))
{
if (GET_CODE (insn) == INSN
&& GET_CODE (PATTERN (insn)) == UNSPEC_VOLATILE
&& XINT (PATTERN (insn), 1) == 2)
init_insn_group_barriers ();
if (GET_CODE (insn) == BARRIER)
{
rtx last = prev_active_insn (insn);
if (! last)
continue;
if (GET_CODE (last) == JUMP_INSN
&& GET_CODE (PATTERN (last)) == ADDR_DIFF_VEC)
last = prev_active_insn (last);
if (recog_memoized (last) != CODE_FOR_insn_group_barrier)
emit_insn_after (gen_insn_group_barrier (GEN_INT (3)), last);
init_insn_group_barriers ();
}
else if (INSN_P (insn))
{
if (group_barrier_needed_p (insn))
if (recog_memoized (insn) == CODE_FOR_insn_group_barrier)
init_insn_group_barriers ();
else if (group_barrier_needed_p (insn))
{
emit_insn_before (gen_insn_group_barrier (GEN_INT (3)), insn);
init_insn_group_barriers ();