* reorg.c (delete_from_delay_slot): If we have a barrier after the

	sequence containing the insn to be deleted, always reemit it.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@82065 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8d00704..e2f3425 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -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

diff --git a/gcc/reorg.c b/gcc/reorg.c
index 2ae0a8f..dd9737b 100644 (file)
--- a/gcc/reorg.c
+++ b/gcc/reorg.c
@@ -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