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, 42 insertions, 0 deletions

diff --git a/libgo/runtime/go-string.h b/libgo/runtime/go-string.h
new file mode 100644
index 0000000..2c8e1ac
--- /dev/null
+++ b/libgo/runtime/go-string.h
@@ -0,0 +1,42 @@
+/* go-string.h -- the string type for Go.
+
+   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.  */
+
+#ifndef LIBGO_GO_STRING_H
+#define LIBGO_GO_STRING_H
+
+#include <stddef.h>
+
+/* A string is an instance of this structure.  */
+
+struct __go_string
+{
+  /* The bytes.  */
+  const unsigned char *__data;
+  /* The length.  */
+  int __length;
+};
+
+static inline _Bool
+__go_strings_equal (struct __go_string s1, struct __go_string s2)
+{
+  return (s1.__length == s2.__length
+	  && __builtin_memcmp (s1.__data, s2.__data, s1.__length) == 0);
+}
+
+static inline _Bool
+__go_ptr_strings_equal (const struct __go_string *ps1,
+			const struct __go_string *ps2)
+{
+  if (ps1 == NULL)
+    return ps2 == NULL;
+  if (ps2 == NULL)
+    return 0;
+  return __go_strings_equal (*ps1, *ps2);
+}
+
+extern int __go_get_rune (const unsigned char *, size_t, int *);
+
+#endif /* !defined(LIBGO_GO_STRING_H) */