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, 31 insertions, 0 deletions

diff --git a/libgo/runtime/go-interface-compare.c b/libgo/runtime/go-interface-compare.c
new file mode 100644
index 0000000..11c75e8
--- /dev/null
+++ b/libgo/runtime/go-interface-compare.c
@@ -0,0 +1,31 @@
+/* go-interface-compare.c -- compare two interface values.
+
+   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 "interface.h"
+
+/* Compare two interface values.  Return 0 for equal, not zero for not
+   equal (return value is like strcmp).  */
+
+int
+__go_interface_compare (struct __go_interface left,
+			struct __go_interface right)
+{
+  const struct __go_type_descriptor *left_descriptor;
+
+  if (left.__methods == NULL && right.__methods == NULL)
+    return 0;
+  if (left.__methods == NULL || right.__methods == NULL)
+    return 1;
+  left_descriptor = left.__methods[0];
+  if (!__go_type_descriptors_equal (left_descriptor, right.__methods[0]))
+    return 1;
+  if (__go_is_pointer_type (left_descriptor))
+    return left.__object == right.__object ? 0 : 1;
+  if (!left_descriptor->__equalfn (left.__object, right.__object,
+				   left_descriptor->__size))
+    return 1;
+  return 0;
+}