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reorg.c (delete_from_delay_slot): If we have a barrier after the sequence containing the insn to be deleted...

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* reorg.c (delete_from_delay_slot): If we have a barrier after the
	sequence containing the insn to be deleted, always reemit it.

From-SVN: r82065
This commit is contained in:
John David Anglin 2004-05-20 18:36:50 +00:00 committed by John David Anglin
parent 7e14028056
commit 52fe4de8a3
2 changed files with 11 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2004-05-20 John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
* reorg.c (delete_from_delay_slot): If we have a barrier after the
sequence containing the insn to be deleted, always reemit it.
2004-05-20 Richard Henderson <rth@redhat.com>
PR 15454

8
gcc/reorg.c
View File

@ -570,6 +570,7 @@ delete_from_delay_slot (rtx insn)
rtx trial, seq_insn, seq, prev;
rtx delay_list = 0;
int i;
int had_barrier = 0;
/* We first must find the insn containing the SEQUENCE with INSN in its
delay slot. Do this by finding an insn, TRIAL, where
@ -583,6 +584,9 @@ delete_from_delay_slot (rtx insn)
seq_insn = PREV_INSN (NEXT_INSN (trial));
seq = PATTERN (seq_insn);
if (NEXT_INSN (seq_insn) && GET_CODE (NEXT_INSN (seq_insn)) == BARRIER)
had_barrier = 1;
/* Create a delay list consisting of all the insns other than the one
we are deleting (unless we were the only one). */
if (XVECLEN (seq, 0) > 2)
@ -597,8 +601,8 @@ delete_from_delay_slot (rtx insn)
delete_related_insns (seq_insn);
add_insn_after (trial, prev);
if (GET_CODE (trial) == JUMP_INSN
&& (simplejump_p (trial) || GET_CODE (PATTERN (trial)) == RETURN))
/* If there was a barrier after the old SEQUENCE, remit it. */
if (had_barrier)
emit_barrier_after (trial);
/* If there are any delay insns, remit them. Otherwise clear the