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.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@167407 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 21 insertions, 0 deletions

diff --git a/libgo/runtime/go-map-len.c b/libgo/runtime/go-map-len.c
new file mode 100644
index 00000000000..75b7473390d
--- /dev/null
+++ b/libgo/runtime/go-map-len.c
@@ -0,0 +1,21 @@
+/* go-map-len.c -- return the length of a map.
+
+   Copyright 2009 The Go Authors. All rights reserved.
+   Use of this source code is governed by a BSD-style
+   license that can be found in the LICENSE file.  */
+
+#include <stddef.h>
+
+#include "map.h"
+
+/* Return the length of a map.  This could be done inline, of course,
+   but I'm doing it as a function for now to make it easy to chang the
+   map structure.  */
+
+size_t
+__go_map_len (struct __go_map *map)
+{
+  if (map == NULL)
+    return 0;
+  return map->__element_count;
+}