gcc/ada/ada-tree.def

   1 /****************************************************************************
   2  *                                                                          *
   3  *                         GNAT COMPILER COMPONENTS                         *
   4  *                                                                          *
   5  *                       GNAT-SPECIFIC GCC TREE CODES                       *
   6  *                                                                          *
   7  *                              Specification                               *
   8  *                                                                          *
   9  *                                                                          *
  10  *          Copyright (C) 1992-2001 Free Software Foundation, Inc.          *
  11  *                                                                          *
  12  * GNAT is free software;  you can  redistribute it  and/or modify it under *
  13  * terms of the  GNU General Public License as published  by the Free Soft- *
  14  * ware  Foundation;  either version 2,  or (at your option) any later ver- *
  15  * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *
  16  * OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY *
  17  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License *
  18  * for  more details.  You should have  received  a copy of the GNU General *
  19  * Public License  distributed with GNAT;  see file COPYING.  If not, write *
  20  * to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, *
  21  * MA 02111-1307, USA.                                                      *
  22  *                                                                          *
  23  * GNAT was originally developed  by the GNAT team at  New York University. *
  24  * Extensive contributions were provided by Ada Core Technologies Inc.      *
  25  *                                                                          *
  26  ****************************************************************************/
  27
  28 /* A GNAT tree node to transform to a GCC tree.  This is only used when the
  29    node would generate code, rather then just a tree, and we are in the global
  30    context.
  31
  32    The only field used is TREE_COMPLEXITY, which contains the GNAT node
  33    number.  */
  34
  35 DEFTREECODE (TRANSFORM_EXPR, "transform_expr", 'e', 0)
  36
  37 /* Dynamically allocate on the stack a number of bytes of memory given
  38    by operand 0 at the alignment given by operand 1 and return the
  39    address of the resulting memory.  */
  40
  41 DEFTREECODE (ALLOCATE_EXPR, "allocate_expr", 's', 2)
  42
  43 /* A type that is an unconstrained array itself.  This node is never passed
  44    to GCC. TREE_TYPE is the type of the fat pointer and TYPE_OBJECT_RECORD_TYPE
  45    is the type of a record containing the template and data.  */
  46
  47 DEFTREECODE (UNCONSTRAINED_ARRAY_TYPE, "unconstrained_array_type", 't', 0)
  48
  49 /* A reference to an unconstrained array.  This node only exists as an
  50    intermediate node during the translation of a GNAT tree to a GCC tree;
  51    it is never passed to GCC.  The only field used is operand 0, which
  52    is the fat pointer object.  */
  53
  54 DEFTREECODE (UNCONSTRAINED_ARRAY_REF, "unconstrained_array_ref", 'r', 1)
  55
  56 /* An expression that returns an RTL suitable for its type.  Operand 0
  57    is an expression to be evaluated for side effects only.  */
  58
  59 DEFTREECODE (NULL_EXPR, "null_expr", 'e', 1)
  60
  61 /* An expression that emits a USE for its single operand.  */
  62
  63 DEFTREECODE (USE_EXPR, "use_expr", 'e', 1)
  64
  65 /* Same as ADDR_EXPR, except that if the operand represents a bit field,
  66    return the address of the byte containing the bit.  This is used
  67    for the 'Address attribute and never shows up in the tree.  */
  68 DEFTREECODE (ATTR_ADDR_EXPR, "attr_addr_expr", 'r', 1)
  69
  70 /* An expression that is treated as a conversion while generating code, but is
  71    used to prevent infinite recursion when conversions of biased types are
  72    involved.  */
  73
  74 DEFTREECODE (GNAT_NOP_EXPR, "gnat_nop_expr", '1', 1)
  75
  76 /* This is used as a place to store the ID of a loop.
  77
  78    ??? This should be redone at some point.  */
  79
  80 DEFTREECODE (GNAT_LOOP_ID, "gnat_loop_id", 'x', 0)