libgo, compiler: Upgrade libgo to Go 1.4, except for runtime.

This upgrades all of libgo other than the runtime package to
the Go 1.4 release.  In Go 1.4 much of the runtime was
rewritten into Go.  Merging that code will take more time and
will not change the API, so I'm putting it off for now.

There are a few runtime changes anyhow, to accomodate other
packages that rely on minor modifications to the runtime
support.

The compiler changes slightly to add a one-bit flag to each
type descriptor kind that is stored directly in an interface,
which for gccgo is currently only pointer types.  Another
one-bit flag (gcprog) is reserved because it is used by the gc
compiler, but gccgo does not currently use it.

There is another error check in the compiler since I ran
across it during testing.

gotools/:
	* Makefile.am (go_cmd_go_files): Sort entries.  Add generate.go.
	* Makefile.in: Rebuild.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@219627 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 6 insertions, 2 deletions

diff --git a/libgo/go/sync/runtime.go b/libgo/go/sync/runtime.go
index 3bf47ea52aa..3b866303a96 100644
--- a/libgo/go/sync/runtime.go
+++ b/libgo/go/sync/runtime.go
@@ -19,8 +19,12 @@ func runtime_Semacquire(s *uint32)
 // library and should not be used directly.
 func runtime_Semrelease(s *uint32)
 
-// Opaque representation of SyncSema in runtime/sema.goc.
-type syncSema [3]uintptr
+// Approximation of syncSema in runtime/sema.go.
+type syncSema struct {
+	lock uintptr
+	head unsafe.Pointer
+	tail unsafe.Pointer
+}
 
 // Syncsemacquire waits for a pairing Syncsemrelease on the same semaphore s.
 func runtime_Syncsemacquire(s *syncSema)