rtlanal.c (reg_referenced_p): Use reg_overlap_mentioned_p for the parts of an…

rtlanal.c (reg_referenced_p): Use reg_overlap_mentioned_p for the parts of an UNSPEC / UNSPEC_VOLATILE.

	* rtlanal.c (reg_referenced_p): Use reg_overlap_mentioned_p
	for the parts of an UNSPEC / UNSPEC_VOLATILE.

From-SVN: r27720

gcc/ChangeLog

+Wed Jun 23 21:26:00 1999  J"orn Rennecke <amylaar@cygnus.co.uk>
+
+	* rtlanal.c (reg_referenced_p): Use reg_overlap_mentioned_p
+	for the parts of an UNSPEC / UNSPEC_VOLATILE.
+
 1999-06-23  Bruce Korb  <ddsinc09@ix.netcom.com>
 
 	*fixinc/inclhack.def:  Add fix development commentary

gcc/rtlanal.c

@@ -410,6 +410,11 @@ reg_referenced_p (x, body)
 
     case UNSPEC:
     case UNSPEC_VOLATILE:
+      for (i = XVECLEN (body, 0) - 1; i >= 0; i--)
+	if (reg_overlap_mentioned_p (x, XVECEXP (body, 0, i)))
+	  return 1;
+      return 0;
+
     case PARALLEL:
       for (i = XVECLEN (body, 0) - 1; i >= 0; i--)
 	if (reg_referenced_p (x, XVECEXP (body, 0, i)))