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reorg.c (relax_delay_slots): Call update_block before redirecting a branch past a redundant insn.

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* reorg.c (relax_delay_slots): Call update_block before
	redirecting a branch past a redundant insn.

From-SVN: r12060
This commit is contained in:
Jeff Law 1996-05-20 10:44:05 -06:00
parent da3c5e3c8d
commit eed04dff2e
1 changed files with 14 additions and 5 deletions
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19
gcc/reorg.c
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@ -4066,11 +4066,20 @@ relax_delay_slots (first)
if (trial && GET_CODE (PATTERN (trial)) != SEQUENCE
&& redundant_insn (trial, insn, 0))
{
trial = next_active_insn (trial);
if (trial == 0)
target_label = find_end_label ();
else
target_label = get_label_before (trial);
rtx tmp;
/* Figure out where to emit the special USE insn so we don't
later incorrectly compute register live/death info. */
tmp = next_active_insn (trial);
if (tmp == 0)
tmp = find_end_label ();
/* Insert the special USE insn and update dataflow info. */
update_block (trial, tmp);
/* Now emit a label before the special USE insn, and
redirect our jump to the new label. */
target_label = get_label_before (PREV_INSN (tmp));
reorg_redirect_jump (delay_insn, target_label);
next = insn;
continue;