emit-rtl.c (gen_rtvec): Rewrite not using gen_rtvec_v.

2008-09-05  Paolo Bonzini  <bonzini@gnu.org>

	* emit-rtl.c (gen_rtvec): Rewrite not using gen_rtvec_v.
	(gen_rtvec_v): Fix coding standards.

From-SVN: r140031

gcc/ChangeLog

+2008-09-05  Paolo Bonzini  <bonzini@gnu.org>
+
+	* emit-rtl.c (gen_rtvec): Rewrite not using gen_rtvec_v.
+	(gen_rtvec_v): Fix coding standards.
+
 2008-09-04  Jan Hubicka  <jh@suse.cz>
 
 	* i386.c (decide_alg): Be more conservative about optimizing for size.

gcc/emit-rtl.c

@@ -793,35 +793,29 @@ gen_lowpart_SUBREG (enum machine_mode mode, rtx reg)
 			 subreg_lowpart_offset (mode, inmode));
 }
 
-/* gen_rtvec (n, [rt1, ..., rtn])
-**
-**	    This routine creates an rtvec and stores within it the
-**	pointers to rtx's which are its arguments.
-*/
 
-/*VARARGS1*/
+/* Create an rtvec and stores within it the RTXen passed in the arguments.  */
+
 rtvec
 gen_rtvec (int n, ...)
 {
-  int i, save_n;
-  rtx *vector;
+  int i;
+  rtvec rt_val;
   va_list p;
 
   va_start (p, n);
 
+  /* Don't allocate an empty rtvec...  */
   if (n == 0)
-    return NULL_RTVEC;		/* Don't allocate an empty rtvec...	*/
+    return NULL_RTVEC;
 
-  vector = XALLOCAVEC (rtx, n);
+  rt_val = rtvec_alloc (n);
 
   for (i = 0; i < n; i++)
-    vector[i] = va_arg (p, rtx);
+    rt_val->elem[i] = va_arg (p, rtx);
 
-  /* The definition of VA_* in K&R C causes `n' to go out of scope.  */
-  save_n = n;
   va_end (p);
-
-  return gen_rtvec_v (save_n, vector);
+  return rt_val;
 }
 
 rtvec
@@ -830,10 +824,11 @@ gen_rtvec_v (int n, rtx *argp)
   int i;
   rtvec rt_val;
 
+  /* Don't allocate an empty rtvec...  */
   if (n == 0)
-    return NULL_RTVEC;		/* Don't allocate an empty rtvec...	*/
+    return NULL_RTVEC;
 
-  rt_val = rtvec_alloc (n);	/* Allocate an rtvec...			*/
+  rt_val = rtvec_alloc (n);
 
   for (i = 0; i < n; i++)
     rt_val->elem[i] = *argp++;