nds32: Fix casesi (PR70668)

Expanders do not have more elements in the operands array than declared
in the pattern.  So, we cannot use operands[5] here.  Instead just
declare and use another rtx.


	PR target/70668
	* config/nds32/nds32.md (casesi): Don't access the operands array
	out of bounds.

From-SVN: r235583

gcc/ChangeLog

+2016-04-28  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	PR target/70668
+	* config/nds32/nds32.md (casesi): Don't access the operands array
+	out of bounds.
+
 2016-04-28  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/i386.md (zeroing peephole2): Use general_reg_operand.

gcc/config/nds32/nds32.md

@@ -2288,11 +2288,9 @@ create_template:
   emit_jump_insn (gen_cbranchsi4 (test, operands[0], operands[2],
 				  operands[4]));
 
-  operands[5] = gen_reg_rtx (SImode);
-  /* Step C, D, E, and F, using another temporary register operands[5].  */
-  emit_jump_insn (gen_casesi_internal (operands[0],
-				       operands[3],
-				       operands[5]));
+  /* Step C, D, E, and F, using another temporary register.  */
+  rtx tmp = gen_reg_rtx (SImode);
+  emit_jump_insn (gen_casesi_internal (operands[0], operands[3], tmp));
   DONE;
 })