gcc/ada/ada-tree.def

   1 /****************************************************************************
   2  *                                                                          *
   3  *                         GNAT COMPILER COMPONENTS                         *
   4  *                                                                          *
   5  *                       GNAT-SPECIFIC GCC TREE CODES                       *
   6  *                                                                          *
   7  *                              Specification                               *
   8  *                                                                          *
   9  *          Copyright (C) 1992-2004 Free Software Foundation, Inc.          *
  10  *                                                                          *
  11  * GNAT is free software;  you can  redistribute it  and/or modify it under *
  12  * terms of the  GNU General Public License as published  by the Free Soft- *
  13  * ware  Foundation;  either version 2,  or (at your option) any later ver- *
  14  * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *
  15  * OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY *
  16  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License *
  17  * for  more details.  You should have  received  a copy of the GNU General *
  18  * Public License  distributed with GNAT;  see file COPYING.  If not, write *
  19  * to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, *
  20  * Boston, MA 02110-1301, USA.                                              *
  21  *                                                                          *
  22  * GNAT was originally developed  by the GNAT team at  New York University. *
  23  * Extensive contributions were provided by Ada Core Technologies Inc.      *
  24  *                                                                          *
  25  ****************************************************************************/
  26
  27 /* A type that is an unconstrained array itself.  This node is never passed
  28    to GCC. TREE_TYPE is the type of the fat pointer and TYPE_OBJECT_RECORD_TYPE
  29    is the type of a record containing the template and data.  */
  30
  31 DEFTREECODE (UNCONSTRAINED_ARRAY_TYPE, "unconstrained_array_type", tcc_type, 0)
  32
  33 /* A reference to an unconstrained array.  This node only exists as an
  34    intermediate node during the translation of a GNAT tree to a GCC tree;
  35    it is never passed to GCC.  The only field used is operand 0, which
  36    is the fat pointer object.  */
  37
  38 DEFTREECODE (UNCONSTRAINED_ARRAY_REF, "unconstrained_array_ref",
  39             tcc_reference, 1)
  40
  41 /* An expression that returns an RTL suitable for its type.  Operand 0
  42    is an expression to be evaluated for side effects only.  */
  43 DEFTREECODE (NULL_EXPR, "null_expr", tcc_expression, 1)
  44
  45 /* Same as ADDR_EXPR, except that if the operand represents a bit field,
  46    return the address of the byte containing the bit.  This is used
  47    for the 'Address attribute and never shows up in the tree.  */
  48 DEFTREECODE (ATTR_ADDR_EXPR, "attr_addr_expr", tcc_reference, 1)
  49
  50 /* Here are the tree codes for the statement types known to Ada.  These
  51    must be at the end of this file to allow IS_ADA_STMT to work.  */
  52
  53 /* This is how record_code_position and insert_code_for work.  The former
  54    makes this tree node, whose operand is a statement.  The latter inserts
  55    the actual statements into this node.  Gimplification consists of
  56    just returning the inner statement.  */
  57 DEFTREECODE (STMT_STMT, "stmt_stmt", tcc_statement, 1)
  58
  59 /* A loop.  LOOP_STMT_TOP_COND and LOOP_STMT_BOT_COND are the tests to exit a
  60    loop at the top and bottom, respectively.  LOOP_STMT_UPDATE is the statement
  61    to update the loop iterator at the continue point.  LOOP_STMT_BODY are the
  62    statements in the body of the loop.  LOOP_STMT_LABEL points to the LABEL_DECL
  63    of the end label of the loop.  */
  64 DEFTREECODE (LOOP_STMT, "loop_stmt", tcc_statement, 5)
  65
  66 /* Conditionally exit a loop.  EXIT_STMT_COND is the condition, which, if
  67    true, will cause the loop to be exited.  If no condition is specified,
  68    the loop is unconditionally exited.  EXIT_STMT_LABEL is the end label
  69    corresponding to the loop to exit.  */
  70 DEFTREECODE (EXIT_STMT, "exit_stmt", tcc_statement, 2)
  71
  72 /* A exception region.  REGION_STMT_BODY is the statement to be executed
  73    inside the region.  REGION_STMT_HANDLE is a statement that represents
  74    the exception handlers (usually a BLOCK_STMT of HANDLE_STMTs).
  75    REGION_STMT_BLOCK is the BLOCK node for the declarative region, if any.  */
  76 DEFTREECODE (REGION_STMT, "region_stmt", tcc_statement, 3)
  77
  78 /* An exception handler.  HANDLER_STMT_ARG is the value to pass to
  79    expand_start_catch, HANDLER_STMT_LIST is the list of statements for the
  80    handler itself, and HANDLER_STMT_BLOCK is the BLOCK node for this
  81    binding. */
  82 DEFTREECODE (HANDLER_STMT, "handler_stmt", tcc_statement, 3)
  83
  84 /* A statement that emits a USE for its single operand.  */
  85 DEFTREECODE (USE_STMT, "use_expr", tcc_statement, 1)