89 lines
4.4 KiB
Modula-2
89 lines
4.4 KiB
Modula-2
/****************************************************************************
|
|
* *
|
|
* GNAT COMPILER COMPONENTS *
|
|
* *
|
|
* GNAT-SPECIFIC GCC TREE CODES *
|
|
* *
|
|
* Specification *
|
|
* *
|
|
* $Revision: 1.1 $
|
|
* *
|
|
* Copyright (C) 1992-2001 Free Software Foundation, Inc. *
|
|
* *
|
|
* GNAT is free software; you can redistribute it and/or modify it under *
|
|
* terms of the GNU General Public License as published by the Free Soft- *
|
|
* ware Foundation; either version 2, or (at your option) any later ver- *
|
|
* sion. GNAT is distributed in the hope that it will be useful, but WITH- *
|
|
* OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY *
|
|
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License *
|
|
* for more details. You should have received a copy of the GNU General *
|
|
* Public License distributed with GNAT; see file COPYING. If not, write *
|
|
* to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, *
|
|
* MA 02111-1307, USA. *
|
|
* *
|
|
* GNAT was originally developed by the GNAT team at New York University. *
|
|
* It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). *
|
|
* *
|
|
****************************************************************************/
|
|
|
|
/* A GNAT tree node to transform to a GCC tree. This is only used when the
|
|
node would generate code, rather then just a tree, and we are in the global
|
|
context.
|
|
|
|
The only field used is TREE_COMPLEXITY, which contains the GNAT node
|
|
number. */
|
|
|
|
DEFTREECODE (TRANSFORM_EXPR, "transform_expr", 'e', 0)
|
|
|
|
/* Perform an unchecked conversion between the input and the output.
|
|
if TREE_ADDRESSABLE is set, it means this is in an LHS; in that case,
|
|
we can only use techniques, such as pointer punning, that leave the
|
|
expression a "name". */
|
|
|
|
DEFTREECODE (UNCHECKED_CONVERT_EXPR, "unchecked_convert_expr", '1', 1)
|
|
|
|
/* Dynamically allocate on the stack a number of bytes of memory given
|
|
by operand 0 at the alignment given by operand 1 and return the
|
|
address of the resulting memory. */
|
|
|
|
DEFTREECODE (ALLOCATE_EXPR, "allocate_expr", '2', 2)
|
|
|
|
/* A type that is an unconstrained array itself. This node is never passed
|
|
to GCC. TREE_TYPE is the type of the fat pointer and TYPE_OBJECT_RECORD_TYPE
|
|
is the type of a record containing the template and data. */
|
|
|
|
DEFTREECODE (UNCONSTRAINED_ARRAY_TYPE, "unconstrained_array_type", 't', 0)
|
|
|
|
/* A reference to an unconstrained array. This node only exists as an
|
|
intermediate node during the translation of a GNAT tree to a GCC tree;
|
|
it is never passed to GCC. The only field used is operand 0, which
|
|
is the fat pointer object. */
|
|
|
|
DEFTREECODE (UNCONSTRAINED_ARRAY_REF, "unconstrained_array_ref", 'r', 1)
|
|
|
|
/* An expression that returns an RTL suitable for its type. Operand 0
|
|
is an expression to be evaluated for side effects only. */
|
|
|
|
DEFTREECODE (NULL_EXPR, "null_expr", 'e', 1)
|
|
|
|
/* An expression that emits a USE for its single operand. */
|
|
|
|
DEFTREECODE (USE_EXPR, "use_expr", 'e', 1)
|
|
|
|
/* Same as ADDR_EXPR, except that if the operand represents a bit field,
|
|
return the address of the byte containing the bit. This is used
|
|
for the 'Address attribute and never shows up in the tree. */
|
|
DEFTREECODE (ATTR_ADDR_EXPR, "attr_addr_expr", 'r', 1)
|
|
|
|
/* An expression that is treated as a conversion while generating code, but is
|
|
used to prevent infinite recursion when conversions of biased types are
|
|
involved. */
|
|
|
|
DEFTREECODE (GNAT_NOP_EXPR, "gnat_nop_expr", '1', 1)
|
|
|
|
/* This is used as a place to store the ID of a loop.
|
|
|
|
??? This should be redone at some point. */
|
|
|
|
DEFTREECODE (GNAT_LOOP_ID, "gnat_loop_id", 'x', 1)
|