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jeremybenn |
/* This file contains the definitions and documentation for the
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additional tree codes used in the GNU C compiler (see tree.def
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for the standard codes).
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Copyright (C) 1987, 1988, 1990, 1993, 1997, 1998,
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1999, 2000, 2001, 2004, 2005, 2007, 2009 Free Software Foundation, Inc.
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Written by Benjamin Chelf
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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. */
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/* Tree nodes used in the C frontend. These are also shared with the
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C++ and Objective C frontends. */
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/* A C_MAYBE_CONST_EXPR, currently only used for C and Objective C,
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tracks information about constancy of an expression and VLA type
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sizes or VM expressions from typeof that need to be evaluated
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before the main expression. It is used during parsing and removed
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in c_fully_fold. C_MAYBE_CONST_EXPR_PRE is the expression to
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evaluate first, if not NULL; C_MAYBE_CONST_EXPR_EXPR is the main
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expression. If C_MAYBE_CONST_EXPR_INT_OPERANDS is set then the
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expression may be used in an unevaluated part of an integer
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constant expression, but not in an evaluated part. If
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C_MAYBE_CONST_EXPR_NON_CONST is set then the expression contains
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something that cannot occur in an evaluated part of a constant
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expression (or outside of sizeof in C90 mode); otherwise it does
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not. */
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DEFTREECODE (C_MAYBE_CONST_EXPR, "c_maybe_const_expr", tcc_expression, 2)
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/* An EXCESS_PRECISION_EXPR, currently only used for C and Objective
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C, represents an expression evaluated in greater range or precision
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than its type. The type of the EXCESS_PRECISION_EXPR is the
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semantic type while the operand represents what is actually being
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evaluated. */
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DEFTREECODE (EXCESS_PRECISION_EXPR, "excess_precision_expr", tcc_expression, 1)
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/*
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Local variables:
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mode:c
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End:
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*/
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