gcc/ada/gcc-interface/ada-tree.def

   1 /****************************************************************************
   2  *                                                                          *
   3  *                         GNAT COMPILER COMPONENTS                         *
   4  *                                                                          *
   5  *                       GNAT-SPECIFIC GCC TREE CODES                       *
   6  *                                                                          *
   7  *                              Specification                               *
   8  *                                                                          *
   9  *            Copyright (C) 1992-2009, 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 3,  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 along with GCC; see the file COPYING3.  If not see        *
  19  * <http://www.gnu.org/licenses/>.                                          *
  20  *                                                                          *
  21  * GNAT was originally developed  by the GNAT team at  New York University. *
  22  * Extensive contributions were provided by Ada Core Technologies Inc.      *
  23  *                                                                          *
  24  ****************************************************************************/
  25
  26 /* A type that is an unconstrained array.  This node is never passed to GCC.
  27    TREE_TYPE is the type of the fat pointer and TYPE_OBJECT_RECORD_TYPE is
  28    the type of a record containing the template and data.  */
  29 DEFTREECODE (UNCONSTRAINED_ARRAY_TYPE, "unconstrained_array_type", tcc_type, 0)
  30
  31 /* A reference to an unconstrained array.  This node only exists as an
  32    intermediate node during the translation of a GNAT tree to a GCC tree;
  33    it is never passed to GCC.  The only field used is operand 0, which
  34    is the fat pointer object.  */
  35 DEFTREECODE (UNCONSTRAINED_ARRAY_REF, "unconstrained_array_ref",
  36              tcc_reference, 1)
  37
  38 /* An expression that returns an RTL suitable for its type.  Operand 0
  39    is an expression to be evaluated for side effects only.  */
  40 DEFTREECODE (NULL_EXPR, "null_expr", tcc_expression, 1)
  41
  42 /* Same as PLUS_EXPR, except that no modulo reduction is applied.
  43    This is used for loops and never shows up in the tree.  */
  44 DEFTREECODE (PLUS_NOMOD_EXPR, "plus_nomod_expr", tcc_binary, 2)
  45
  46 /* Same as MINUS_EXPR, except that no modulo reduction is applied.
  47    This is used for loops and never shows up in the tree.  */
  48 DEFTREECODE (MINUS_NOMOD_EXPR, "minus_nomod_expr", tcc_binary, 2)
  49
  50 /* Same as ADDR_EXPR, except that if the operand represents a bit field,
  51    return the address of the byte containing the bit.  This is used
  52    for the Address attribute and never shows up in the tree.  */
  53 DEFTREECODE (ATTR_ADDR_EXPR, "attr_addr_expr", tcc_reference, 1)
  54
  55 /* Here are the tree codes for the statement types known to Ada.  These
  56    must be at the end of this file to allow IS_ADA_STMT to work.  */
  57
  58 /* This is how record_code_position and insert_code_for work.  The former
  59    makes this tree node, whose operand is a statement.  The latter inserts
  60    the actual statements into this node.  Gimplification consists of
  61    just returning the inner statement.  */
  62 DEFTREECODE (STMT_STMT, "stmt_stmt", tcc_statement, 1)
  63
  64 /* A loop.  LOOP_STMT_COND is the test to exit the loop.  LOOP_STMT_UPDATE
  65    is the statement to update the loop iteration variable at the continue
  66    point.  LOOP_STMT_BODY are the statements in the body of the loop.  And
  67    LOOP_STMT_LABEL points to the LABEL_DECL of the end label of the loop.  */
  68 DEFTREECODE (LOOP_STMT, "loop_stmt", tcc_statement, 4)
  69
  70 /* Conditionally exit a loop.  EXIT_STMT_COND is the condition, which, if
  71    true, will cause the loop to be exited.  If no condition is specified,
  72    the loop is unconditionally exited.  EXIT_STMT_LABEL is the end label
  73    corresponding to the loop to exit.  */
  74 DEFTREECODE (EXIT_STMT, "exit_stmt", tcc_statement, 2)