[NDS32] Refine condition of stack_push and stack_pop patterns.

gcc/
	* config/nds32/nds32.md (*stack_push, *stack_pop): Use
	NDS32_V3PUSH_AVAILABLE_P macro.

From-SVN: r259162

gcc/ChangeLog

+2018-04-06  Chung-Ju Wu  <jasonwucj@gmail.com>
+
+	* config/nds32/nds32.md (*stack_push, *stack_pop): Use
+	NDS32_V3PUSH_AVAILABLE_P macro.
+
 2018-04-06  Monk Chiang  <sh.chiang04@gmail.com>
 	    Chung-Ju Wu  <jasonwucj@gmail.com>
 

gcc/config/nds32/nds32.md

@@ -1682,9 +1682,7 @@
    (set_attr "combo" "12")
    (set_attr "enabled" "yes")
    (set (attr "length")
-	(if_then_else (match_test "TARGET_V3PUSH
-				   && !nds32_isr_function_p (cfun->decl)
-				   && (cfun->machine->va_args_size == 0)")
+	(if_then_else (match_test "NDS32_V3PUSH_AVAILABLE_P")
 		      (const_int 2)
 		      (const_int 4)))])
 
@@ -1705,9 +1703,7 @@
    (set_attr "combo" "12")
    (set_attr "enabled" "yes")
    (set (attr "length")
-	(if_then_else (match_test "TARGET_V3PUSH
-				   && !nds32_isr_function_p (cfun->decl)
-				   && (cfun->machine->va_args_size == 0)")
+	(if_then_else (match_test "NDS32_V3PUSH_AVAILABLE_P")
 		      (const_int 2)
 		      (const_int 4)))])