| // rust-gcc.cc -- Rust frontend to gcc IR. |
| // Copyright (C) 2011-2023 Free Software Foundation, Inc. |
| // Contributed by Ian Lance Taylor, Google. |
| // forked from gccgo |
| |
| // This file is part of GCC. |
| |
| // GCC is free software; you can redistribute it and/or modify it under |
| // the terms of the GNU General Public License as published by the Free |
| // Software Foundation; either version 3, or (at your option) any later |
| // version. |
| |
| // GCC is distributed in the hope that it will be useful, but WITHOUT 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 |
| // along with GCC; see the file COPYING3. If not see |
| // <http://www.gnu.org/licenses/>. |
| |
| #include "rust-system.h" |
| |
| // This has to be included outside of extern "C", so we have to |
| // include it here before tree.h includes it later. |
| #include <gmp.h> |
| |
| #include "tree.h" |
| #include "rust-location.h" |
| |
| // TODO: this will have to be significantly modified to work with Rust |
| |
| // Bvariable is a bit more complicated, because of zero-sized types. |
| // The GNU linker does not permit dynamic variables with zero size. |
| // When we see such a variable, we generate a version of the type with |
| // non-zero size. However, when referring to the global variable, we |
| // want an expression of zero size; otherwise, if, say, the global |
| // variable is passed to a function, we will be passing a |
| // non-zero-sized value to a zero-sized value, which can lead to a |
| // miscompilation. |
| |
| class Bvariable |
| { |
| public: |
| Bvariable (tree t) : t_ (t), orig_type_ (NULL) {} |
| |
| Bvariable (tree t, tree orig_type) : t_ (t), orig_type_ (orig_type) {} |
| |
| // Get the tree for use as an expression. |
| tree get_tree (Location) const; |
| |
| // Get the actual decl; |
| tree get_decl () const { return this->t_; } |
| |
| private: |
| tree t_; |
| tree orig_type_; |
| }; |