mips.c (mips_split_const): Don't accept bare PLUS expressions.

gcc/
	* config/mips/mips.c (mips_split_const): Don't accept bare PLUS
	expressions.

From-SVN: r117950

gcc/ChangeLog

+2006-10-22  Richard Sandiford  <richard@codesourcery.com>
+
+	* config/mips/mips.c (mips_split_const): Don't accept bare PLUS
+	expressions.
+
 2006-10-21  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* config/i386/i386.md (UNSPEC_LDQQU): Renamed to ...

gcc/config/mips/mips.c

@@ -1282,12 +1282,13 @@ mips_split_const (rtx x, rtx *base, HOST_WIDE_INT *offset)
   *offset = 0;
 
   if (GET_CODE (x) == CONST)
-    x = XEXP (x, 0);
-
-  if (GET_CODE (x) == PLUS && GET_CODE (XEXP (x, 1)) == CONST_INT)
     {
-      *offset += INTVAL (XEXP (x, 1));
       x = XEXP (x, 0);
+      if (GET_CODE (x) == PLUS && GET_CODE (XEXP (x, 1)) == CONST_INT)
+	{
+	  *offset += INTVAL (XEXP (x, 1));
+	  x = XEXP (x, 0);
+	}
     }
   *base = x;
 }