emit-rtl.c (try_split): Copy EH notes to sequence.

2001-04-27  Andrew Haley  <aph@cambridge.redhat.com>

        * emit-rtl.c (try_split):  Copy EH notes to sequence.

From-SVN: r41688

gcc/ChangeLog

+2001-04-27  Andrew Haley  <aph@cambridge.redhat.com>
+
+	* emit-rtl.c (try_split):  Copy EH notes to sequence.
+
 2001-04-30  Mark Mitchell  <mark@codesourcery.com>
 
 	* regmove.c (record_stack_memrefs): Catch all references to the

gcc/emit-rtl.c

@@ -2585,7 +2585,8 @@ try_split (pat, trial, last)
       if (GET_CODE (seq) == SEQUENCE)
 	{
 	  int i;
-
+	  rtx eh_note;
+	  
 	  /* Avoid infinite loop if any insn of the result matches 
 	     the original pattern.  */
 	  for (i = 0; i < XVECLEN (seq, 0); i++)
@@ -2607,6 +2608,19 @@ try_split (pat, trial, last)
 		CALL_INSN_FUNCTION_USAGE (XVECEXP (seq, 0, i))
 		  = CALL_INSN_FUNCTION_USAGE (trial);
 
+	  /* Copy EH notes.  */
+	  if ((eh_note = find_reg_note (trial, REG_EH_REGION, NULL_RTX)))
+	    for (i = 0; i < XVECLEN (seq, 0); i++)
+	      {
+		rtx insn = XVECEXP (seq, 0, i);
+		if (GET_CODE (insn) == CALL_INSN
+		    || (flag_non_call_exceptions 
+			&& may_trap_p (PATTERN (insn))))
+		  REG_NOTES (insn) 
+		    = gen_rtx_EXPR_LIST (REG_EH_REGION, XEXP (eh_note, 0),
+					 REG_NOTES (insn));
+	      }
+
 	  /* If there are LABELS inside the split insns increment the
 	     usage count so we don't delete the label.  */
 	  if (GET_CODE (trial) == INSN)