Fix docs for ADDRESS rtx

From-SVN: r29888

gcc/ChangeLog

@@ -3,6 +3,11 @@ Sun Oct 10 13:28:48 1999  Bernd Schmidt  <bernds@cygnus.co.uk>
 	* loop.c (find_and_verify_loops): When looking for a BARRIER, don't
 	use one before a jump table.
 
+	* rtl.def (ADDRESS): Change documentation to match reality.
+	* md.texi: Don't document it.
+	* gmicro.md (load address pattern): Use 'p' constraint, delete use
+	of ADDRESS rtx.
+
 Sun Oct 10 02:41:41 1999  Richard Henderson  <rth@cygnus.com>
 
 	* genrecog.c (add_to_sequence): Move allow_const_int test outside

gcc/config/gmicro/gmicro.md

@@ -2624,7 +2624,7 @@
 /* mova.[whq] 89.08.11 for test M.Yuhara */
 ;(define_insn ""
 ;  [(set (match_operand:SI 0 "general_operand" "=rm")
-;	(address (match_operand:SI 1 "address_operand" "p")))]
+;	(match_operand:SI 1 "address_operand" "p"))]
 ;  ""
 ;  "*
 ;{
@@ -2645,7 +2645,7 @@
 
 (define_insn ""
   [(set (match_operand:SI 0 "general_operand" "=rm")
-	(address (match_operand:HI 1 "address_operand" "")))]
+	(match_operand:HI 1 "address_operand" "p"))]
   ""
   "*
 {

gcc/md.texi

@@ -420,29 +420,6 @@ The machine mode @var{m} of @code{match_insn2} works like that of
 predicate function, and that function is solely responsible for
 deciding whether the expression to be matched ``has'' that mode.
 
-@findex address
-@item (address (match_operand:@var{m} @var{n} "address_operand" ""))
-This complex of expressions is a placeholder for an operand number
-@var{n} in a ``load address'' instruction: an operand which specifies
-a memory location in the usual way, but for which the actual operand
-value used is the address of the location, not the contents of the
-location.
-
-@code{address} expressions never appear in RTL code, only in machine
-descriptions.  And they are used only in machine descriptions that do
-not use the operand constraint feature.  When operand constraints are
-in use, the letter @samp{p} in the constraint serves this purpose.
-
-@var{m} is the machine mode of the @emph{memory location being
-addressed}, not the machine mode of the address itself.  That mode is
-always the same on a given target machine (it is @code{Pmode}, which
-normally is @code{SImode}), so there is no point in mentioning it;
-thus, no machine mode is written in the @code{address} expression.  If
-some day support is added for machines in which addresses of different
-kinds of objects appear differently or are used differently (such as
-the PDP-10), different formats would perhaps need different machine
-modes and these modes might be written in the @code{address}
-expression.
 @end table
 
 @node Output Template

gcc/rtl.def

@@ -289,10 +289,7 @@ DEF_RTL_EXPR(DEFINE_ASM_ATTRIBUTES, "define_asm_attributes", "V", 'x' )
    `emit_insn' takes the SEQUENCE apart and makes separate insns.  */
 DEF_RTL_EXPR(SEQUENCE, "sequence", "E", 'x')
 
-/* Refers to the address of its argument.
-   This appears only in machine descriptions, indicating that
-   any expression that would be acceptable as the operand of MEM
-   should be matched.  */
+/* Refers to the address of its argument.  This is only used in alias.c.  */
 DEF_RTL_EXPR(ADDRESS, "address", "e", 'm')
 
 /* ----------------------------------------------------------------------