1 files changed, 46 insertions, 0 deletions
diff --git a/gcc/rust/backend/rust-constexpr.h b/gcc/rust/backend/rust-constexpr.h
new file mode 100644
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--- /dev/null
+++ b/gcc/rust/backend/rust-constexpr.h
@@ -0,0 +1,46 @@
+// 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/>.
+
+#ifndef RUST_CONSTEXPR
+#define RUST_CONSTEXPR
+
+#include "rust-system.h"
+#include "tree.h"
+
+namespace Rust {
+namespace Compile {
+
+class ConstCtx
+{
+public:
+  static tree fold (tree);
+
+  tree constexpr_expression (tree);
+  tree eval_binary_expression (tree);
+  tree eval_call_expression (tree);
+  tree constexpr_fn_retval (tree);
+  tree eval_store_expression (tree);
+
+private:
+  ConstCtx ();
+
+  HOST_WIDE_INT constexpr_ops_count;
+};
+
+} // namespace Compile
+} // namespace Rust
+
+#endif // RUST_CONSTEXPR