tm.texi (TARGET_VALID_POINTER_MODE): Document.

2004-12-06  Eric Christopher  <echristo@redhat.com>

	* doc/tm.texi (TARGET_VALID_POINTER_MODE): Document.

From-SVN: r91801

gcc/ChangeLog

+2004-12-06  Eric Christopher  <echristo@redhat.com>
+
+	* doc/tm.texi (TARGET_VALID_POINTER_MODE): Document.
+
 2004-12-06  Aldy Hernandez  <aldyh@redhat.com>
 
 	* config/rs6000/sysv4.h: Define RELOCATABLE_NEEDS_FIXUP to 1.
@@ -39,9 +43,9 @@
 	(combine_btr_defs): Don't bother with
 	other_def->other_btr_uses_after_use if it pertains to a different
 	register.
-	(move_btr_def): Set def->other_btr_uses_before_def after 
+	(move_btr_def): Set def->other_btr_uses_before_def after
 	calling combine_btr_defs."
-	
+
 	* bt-load.c (augment_live_range): New argument full_range.
 	Changed all callers.
 

gcc/doc/tm.texi

@@ -3937,6 +3937,12 @@ arguments to @code{va_arg}; the latter two are as in
 @code{gimplify.c:gimplify_expr}.
 @end deftypefn
 
+@deftypefn {Target Hook} bool TARGET_VALID_POINTER_MODE (enum machine_mode @var{mode})
+Define this to return nonzero if the port can handle pointers
+with machine mode @var{mode}.  The default version of this
+hook returns true for both @code{ptr_mode} and @code{Pmode}.
+@end deftypefn
+
 @deftypefn {Target Hook} bool TARGET_SCALAR_MODE_SUPPORTED_P (enum machine_mode @var{mode})
 Define this to return nonzero if the port is prepared to handle
 insns involving scalar mode @var{mode}.  For a scalar mode to be