* i386.c (incdec_operand): Accept only 1 and -1.

From-SVN: r42527

gcc/ChangeLog

+Thu May 24 15:56:48 CEST 2001  Jan Hubicka  <jh@suse.cz>
+
+	* i386.c (incdec_operand): Accept only 1 and -1.
+
 2001-05-23  Kelley Cook  <kelley.cook@home.com>
 
 	* Makefile.in: Move many of the *_H definitions eariler in the

gcc/config/i386/i386.c

@@ -1420,17 +1420,7 @@ incdec_operand (op, mode)
      registers, since carry flag is not set.  */
   if (TARGET_PENTIUM4 && !optimize_size)
     return 0;
-  if (op == const1_rtx || op == constm1_rtx)
-    return 1;
-  if (GET_CODE (op) != CONST_INT)
-    return 0;
-  if (mode == SImode && INTVAL (op) == (HOST_WIDE_INT) 0xffffffff)
-    return 1;
-  if (mode == HImode && INTVAL (op) == (HOST_WIDE_INT) 0xffff)
-    return 1;
-  if (mode == QImode && INTVAL (op) == (HOST_WIDE_INT) 0xff)
-    return 1;
-  return 0;
+  return op == const1_rtx || op == constm1_rtx;
 }
 
 /* Return nonzero if OP is acceptable as operand of DImode shift