Commit 189ae0f4 by Jan Hubicka Committed by Jan Hubicka

* recog.c (peephole2_optimize): Re-distribute EH edges.

From-SVN: r50452
parent 07fc65c4
Fri Mar 8 21:08:52 CET 2002 Jan Hubicka <jh@suse.cz>
* recog.c (peephole2_optimize): Re-distribute EH edges.
2002-03-08 Neil Booth <neil@daikokuya.demon.co.uk>
* expr.c (expand_expr): Use unsave lang hook.
......
......@@ -3054,6 +3054,7 @@ peephole2_optimize (dump_file)
{
rtx try;
int match_len;
rtx note;
/* Record this insn. */
if (--peep2_current < 0)
......@@ -3105,7 +3106,6 @@ peephole2_optimize (dump_file)
note = XEXP (note, 1))
switch (REG_NOTE_KIND (note))
{
case REG_EH_REGION:
case REG_NORETURN:
case REG_SETJMP:
case REG_ALWAYS_RETURN:
......@@ -3139,6 +3139,27 @@ peephole2_optimize (dump_file)
try = emit_insn_after (try, peep2_insn_data[i].insn);
delete_insn_chain (insn, peep2_insn_data[i].insn);
/* Re-insert the EH_REGION notes. */
if (try == bb->end
&& (note = find_reg_note (peep2_insn_data[i].insn,
REG_EH_REGION, NULL_RTX)))
{
rtx x;
for (x = NEXT_INSN (peep2_insn_data[i].insn);
x != NEXT_INSN (try); x = NEXT_INSN (x))
if (GET_CODE (x) == CALL_INSN
|| (flag_non_call_exceptions
&& may_trap_p (PATTERN (x))))
REG_NOTES (x)
= gen_rtx_EXPR_LIST (REG_EH_REGION,
XEXP (note, 0),
REG_NOTES (x));
}
/* Converting possibly trapping insn to non-trapping is
possible. Zap dummy outgoing edges. */
if (try == bb->end)
purge_dead_edges (bb);
#ifdef HAVE_conditional_execution
/* With conditional execution, we cannot back up the
live information so easily, since the conditional
......
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