[ARC] Add trap instruction.

2017-11-07  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.md (trap): New pattern.

From-SVN: r255276

gcc/ChangeLog

 2017-11-30  Claudiu Zissulescu  <claziss@synopsys.com>
 
+	* config/arc/arc.md (trap): New pattern.
+
+2017-11-30  Claudiu Zissulescu  <claziss@synopsys.com>
+
 	* config/arc/arc.c (hwloop_optimize): Prevent the last ZOL
 	instruction to end into a delay slot.
 	* config/arc/arc.md (cond_delay_insn): Check if the instruction

gcc/config/arc/arc.md

@@ -4301,6 +4301,13 @@
 ; use it for lack of inter-procedural branch shortening.
 ; Link-time relaxation would help...
 
+(define_insn "trap"
+  [(trap_if (const_int 1) (const_int 0))]
+  "!TARGET_ARC600_FAMILY"
+  "trap_s\\t5"
+  [(set_attr "type" "misc")
+   (set_attr "length" "2")])
+
 (define_insn "nop"
   [(const_int 0)]
   ""