(movdi matchers): Fix src/dest order in unaligned reg->reg case.

From-SVN: r10223

gcc/config/i960/i960.md

@@ -825,12 +825,12 @@
 	  || (REGNO (operands[1]) & 1))
 	{
 	  /* We normally copy the low-numbered register first.  However, if
-	     the second register operand 0 is the same as the first register
-	     of operand 1, we must copy in the opposite order.  */
-	  if (REGNO (operands[0]) + 1 == REGNO (operands[1]))
-	    return \"mov	%D0,%D1\;mov	%0,%1\";
+	     the second source register is the same as the first destination
+	     register, we must copy in the opposite order.  */
+	  if (REGNO (operands[1]) + 1 == REGNO (operands[0]))
+	    return \"mov	%D1,%D0\;mov	%1,%0\";
 	  else
-	    return \"mov	%0,%1\;mov	%D0,%D1\";
+	    return \"mov	%1,%0\;mov	%D1,%D0\";
 	}
       else
 	return \"movl	%1,%0\";
@@ -882,12 +882,12 @@
 	  || (REGNO (operands[1]) & 1))
 	{
 	  /* We normally copy the low-numbered register first.  However, if
-	     the second register operand 0 is the same as the first register
-	     of operand 1, we must copy in the opposite order.  */
-	  if (REGNO (operands[0]) + 1 == REGNO (operands[1]))
-	    return \"mov	%D0,%D1\;mov	%0,%1\";
+	     the second source register is the same as the first destination
+	     register, we must copy in the opposite order.  */
+	  if (REGNO (operands[1]) + 1 == REGNO (operands[0]))
+	    return \"mov	%D1,%D0\;mov	%1,%0\";
 	  else
-	    return \"mov	%0,%1\;mov	%D0,%D1\";
+	    return \"mov	%1,%0\;mov	%D1,%D0\";
 	}
       else
 	return \"movl	%1,%0\";