[ARM] Add mode to probe_stack set operands

	* config/arm/arm.md (probe_stack): Add modes to set source
	and destination.

From-SVN: r236024

gcc/ChangeLog

+2016-05-09  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	* config/arm/arm.md (probe_stack): Add modes to set source
+	and destination.
+
 2016-05-09  Bernd Schmidt  <bschmidt@redhat.com>
 
 	* regrename.c (base_reg_class_for_rename): New static function.

gcc/config/arm/arm.md

@@ -8156,8 +8156,8 @@
 )
 
 (define_insn "probe_stack"
-  [(set (match_operand 0 "memory_operand" "=m")
-        (unspec [(const_int 0)] UNSPEC_PROBE_STACK))]
+  [(set (match_operand:SI 0 "memory_operand" "=m")
+        (unspec:SI [(const_int 0)] UNSPEC_PROBE_STACK))]
   "TARGET_32BIT"
   "str%?\\tr0, %0"
   [(set_attr "type" "store1")