constraints.md (define_memory_constraint "Q"): Fix the constraint description.

	* config/avr/constraints.md (define_memory_constraint "Q"): Fix
	the constraint description.
	* doc/md.texi: Update documentation of AVR constraints.

From-SVN: r126448

gcc/ChangeLog

+2007-07-07 Eric Weddington  <eweddington@cso.atmel.com>
+
+	* config/avr/constraints.md (define_memory_constraint "Q"): Fix
+	the constraint description.
+	* doc/md.texi: Update documentation of AVR constraints.
+
 2007-07-07  Kazu Hirata  <kazu@codesourcery.com>
 
 	* auto-inc-dec.c, config/arm/arm.c,

gcc/config/avr/constraints.md

@@ -105,6 +105,6 @@
        (match_test "ival >= -6 && ival <= 5")))
        
 (define_memory_constraint "Q"
-  "A memory address based on X or Y pointer with displacement."
+  "A memory address based on Y or Z pointer with displacement."
   (and (match_code "mem")
        (match_test "extra_constraint_Q (op)")))

gcc/doc/md.texi

@@ -1742,6 +1742,12 @@ Constant integer 1
 
 @item G
 A floating point constant 0.0
+
+@item R
+Integer constant in the range -6 @dots{} 5.
+
+@item Q
+A memory address based on Y or Z pointer with displacement.
 @end table
 
 @item CRX Architecture---@file{config/crx/crx.h}