Add Go frontend, libgo library, and Go testsuite.

gcc/:
	* gcc.c (default_compilers): Add entry for ".go".
	* common.opt: Add -static-libgo as a driver option.
	* doc/install.texi (Configuration): Mention libgo as an option for
	--enable-shared.  Mention go as an option for --enable-languages.
	* doc/invoke.texi (Overall Options): Mention .go as a file name
	suffix.  Mention go as a -x option.
	* doc/frontends.texi (G++ and GCC): Mention Go as a supported
	language.
	* doc/sourcebuild.texi (Top Level): Mention libgo.
	* doc/standards.texi (Standards): Add section on Go language.
	Move references for other languages into their own section.
	* doc/contrib.texi (Contributors): Mention that I contributed the
	Go frontend.
gcc/testsuite/:
	* lib/go.exp: New file.
	* lib/go-dg.exp: New file.
	* lib/go-torture.exp: New file.
	* lib/target-supports.exp (check_compile): Match // Go.

From-SVN: r167407

1 files changed, 153 insertions, 0 deletions

diff --git a/gcc/go/go-system.h b/gcc/go/go-system.h
new file mode 100644
index 0000000..e56952d
--- /dev/null
+++ b/gcc/go/go-system.h
@@ -0,0 +1,153 @@
+// go-system.h -- Go frontend inclusion of gcc header files   -*- C++ -*-
+// Copyright (C) 2009, 2010 Free Software Foundation, Inc.
+
+// 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 GO_SYSTEM_H
+#define GO_SYSTEM_H
+
+#include "config.h"
+
+// These must be included before the #poison declarations in system.h.
+
+#include <algorithm>
+#include <string>
+#include <list>
+#include <map>
+#include <set>
+#include <vector>
+
+#if defined(HAVE_UNORDERED_MAP)
+
+# include <unordered_map>
+# include <unordered_set>
+
+# define Unordered_map(KEYTYPE, VALTYPE) \
+	std::unordered_map<KEYTYPE, VALTYPE>
+
+# define Unordered_map_hash(KEYTYPE, VALTYPE, HASHFN, EQFN) \
+	std::unordered_map<KEYTYPE, VALTYPE, HASHFN, EQFN>
+
+# define Unordered_set(KEYTYPE) \
+	std::unordered_set<KEYTYPE>
+
+# define Unordered_set_hash(KEYTYPE, HASHFN, EQFN) \
+	std::unordered_set<KEYTYPE, HASHFN, EQFN>
+
+#elif defined(HAVE_TR1_UNORDERED_MAP)
+
+# include <tr1/unordered_map>
+# include <tr1/unordered_set>
+
+# define Unordered_map(KEYTYPE, VALTYPE) \
+	std::tr1::unordered_map<KEYTYPE, VALTYPE>
+
+# define Unordered_map_hash(KEYTYPE, VALTYPE, HASHFN, EQFN) \
+	std::tr1::unordered_map<KEYTYPE, VALTYPE, HASHFN, EQFN>
+
+# define Unordered_set(KEYTYPE) \
+	std::tr1::unordered_set<KEYTYPE>
+
+# define Unordered_set_hash(KEYTYPE, HASHFN, EQFN) \
+	std::tr1::unordered_set<KEYTYPE, HASHFN, EQFN>
+
+#elif defined(HAVE_EXT_HASH_MAP)
+
+# include <ext/hash_map>
+# include <ext/hash_set>
+
+# define Unordered_map(KEYTYPE, VALTYPE) \
+	__gnu_cxx::hash_map<KEYTYPE, VALTYPE>
+
+# define Unordered_map_hash(KEYTYPE, VALTYPE, HASHFN, EQFN) \
+	__gnu_cxx::hash_map<KEYTYPE, VALTYPE, HASHFN, EQFN>
+
+# define Unordered_set(KEYTYPE) \
+	__gnu_cxx::hash_set<KEYTYPE>
+
+# define Unordered_set_hash(KEYTYPE, HASHFN, EQFN) \
+	__gnu_cxx::hash_set<KEYTYPE, HASHFN, EQFN>
+
+// Provide hash functions for strings and pointers.
+
+namespace __gnu_cxx
+{
+
+template<>
+struct hash<std::string>
+{
+  size_t
+  operator()(std::string s) const
+  { return __stl_hash_string(s.c_str()); }
+};
+
+template<typename T>
+struct hash<T*>
+{
+  size_t
+  operator()(T* p) const
+  { return reinterpret_cast<size_t>(p); }
+};
+
+}
+
+#else
+
+# define Unordered_map(KEYTYPE, VALTYPE) \
+	std::map<KEYTYPE, VALTYPE>
+
+# define Unordered_set(KEYTYPE) \
+	std::set<KEYTYPE>
+
+// We could make this work by writing an adapter class which
+// implemented operator< in terms of the hash function.
+# error "requires hash table type"
+
+#endif
+
+// We don't really need iostream, but some versions of gmp.h include
+// it when compiled with C++, which means that we need to include it
+// before the macro magic of safe-ctype.h, which is included by
+// system.h.
+#include <iostream>
+
+// Some versions of gmp.h assume that #include <iostream> will define
+// std::FILE.  This is not true with libstdc++ 4.3 and later.  This is
+// fixed in GMP 4.3, but at this point we don't know which version of
+// GMP is in use.  Since the top level configure script accepts GMP
+// 4.2, at least for now we #include <cstdio> to ensure that GMP 4.2
+// will work.  FIXME: This can be removed when we require GMP 4.3 or
+// later.
+#include <cstdio>
+
+#ifndef ENABLE_BUILD_WITH_CXX
+extern "C"
+{
+#endif
+
+#include "system.h"
+#include "ansidecl.h"
+#include "coretypes.h"
+
+#include "diagnostic-core.h"	/* For error_at and friends.  */
+#include "input.h"		/* For source_location.  */
+
+#ifndef ENABLE_BUILD_WITH_CXX
+} // End extern "C"
+#endif
+
+#endif // !defined(GO_SYSTEM_H)