[nvptx] Fix some missing mode warnings in nvptx.md

Fix these warnings:
...
gcc/config/nvptx/nvptx.md:748:1: warning: operand 0 missing mode?
gcc/config/nvptx/nvptx.md:757:1: warning: operand 1 missing mode?
gcc/config/nvptx/nvptx.md:1514:1: warning: source missing a mode?
...

Build and reg-tested on x86_64 with nvptx accelerator.

2019-06-17  Tom de Vries  <tdevries@suse.de>

	* config/nvptx/nvptx.md (define_insn "call_insn"): Rename to ...
	(define_insn "call_insn_<mode>"): ... this.  Use P iterator on
	match_operand 0.
	(define_insn "call_value_insn"): Rename to ...
	(define_insn "call_value_insn_<mode>"): this.  Use P iterator on
	match_operand 0.
	(define_insn "nvptx_red_partition"): Set unspec_volatile result mode to
	DI.

From-SVN: r272365

gcc/ChangeLog

+2019-06-17  Tom de Vries  <tdevries@suse.de>
+
+	* config/nvptx/nvptx.md (define_insn "call_insn"): Rename to ...
+	(define_insn "call_insn_<mode>"): ... this.  Use P iterator on
+	match_operand 0.
+	(define_insn "call_value_insn"): Rename to ...
+	(define_insn "call_value_insn_<mode>"): this.  Use P iterator on
+	match_operand 0.
+	(define_insn "nvptx_red_partition"): Set unspec_volatile result mode to
+	DI.
+
 2019-06-16  John David Anglin  <danglin@gcc.gnu.org>
 
 	PR middle-end/64242

gcc/config/nvptx/nvptx.md

@@ -745,19 +745,19 @@
 
 ;; Calls
 
-(define_insn "call_insn"
+(define_insn "call_insn_<mode>"
   [(match_parallel 2 "call_operation"
-    [(call (mem:QI (match_operand 0 "call_insn_operand" "Rs"))
+    [(call (mem:QI (match_operand:P 0 "call_insn_operand" "Rs"))
 	   (match_operand 1))])]
   ""
 {
   return nvptx_output_call_insn (insn, NULL_RTX, operands[0]);
 })
 
-(define_insn "call_value_insn"
+(define_insn "call_value_insn_<mode>"
   [(match_parallel 3 "call_operation"
     [(set (match_operand 0 "nvptx_register_operand" "=R")
-	  (call (mem:QI (match_operand 1 "call_insn_operand" "Rs"))
+	  (call (mem:QI (match_operand:P 1 "call_insn_operand" "Rs"))
 		(match_operand 2)))])]
   ""
 {
@@ -1513,7 +1513,7 @@
 
 (define_insn "nvptx_red_partition"
   [(set (match_operand:DI 0 "nonimmediate_operand" "=R")
-	(unspec_volatile [(match_operand:DI 1 "const_int_operand")]
+	(unspec_volatile:DI [(match_operand:DI 1 "const_int_operand")]
 	 UNSPECV_RED_PART))]
   ""
   {