s390.md ("casesi"): Mark jump table access as non-trapping and unchanging.

	* config/s390/s390.md ("casesi"): Mark jump table access as
	non-trapping and unchanging.

From-SVN: r81240

gcc/ChangeLog

+2004-04-28  Ulrich Weigand  <uweigand@de.ibm.com>
+
+	* config/s390/s390.md ("casesi"): Mark jump table access as
+	non-trapping and unchanging.
+
 2004-04-27  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
 
 	PR debug/14829

gcc/config/s390/s390.md

@@ -6912,6 +6912,8 @@
    emit_move_insn (base, gen_rtx_LABEL_REF (Pmode, operands[3]));
 
    index = gen_rtx_MEM (Pmode, gen_rtx_PLUS (Pmode, base, index));
+   RTX_UNCHANGING_P (index) = 1;
+   MEM_NOTRAP_P (index) = 1;
    emit_move_insn (target, index);
 
    if (flag_pic)