| /**************************************************************************** |
| * * |
| * 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) |