[llgo] Roll gofrontend forward

Switch gofrontend to using go.googlesource.com, and
update to 81eb6a3f425b2158c67ee32c0cc973a72ce9d6be.

There are various changes required to update to the
go 1.5 runtime:

typemap.go is changed to accommodate the change in representation for equal/hash algorithms, and the removal of the zero value/type.
CMakeLists.txt is updated to add the build tree to the package search path, so internal packages, which are not installed, are found.
various files changes due to removal of __go_new_nopointers; the same change as in D11863, but with NoUnwindAttribute added to the added runtime functions which are called with "callOnly".
minor cleanups in ssa.go while investigating issues with unwinding/panic handling.

Differential Revisision: http://reviews.llvm.org/D15188

llvm-svn: 263536

1 files changed, 32 insertions, 0 deletions

diff --git a/llgo/third_party/gofrontend/libgo/go/net/cgo_sockold.go b/llgo/third_party/gofrontend/libgo/go/net/cgo_sockold.go
new file mode 100644
index 00000000000..e80e03b2b1e
--- /dev/null
+++ b/llgo/third_party/gofrontend/libgo/go/net/cgo_sockold.go
@@ -0,0 +1,32 @@
+// Copyright 2015 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.
+
+// +build cgo,!netgo
+// +build darwin dragonfly freebsd netbsd openbsd
+
+package net
+
+/*
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+*/
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+func cgoSockaddrInet4(ip IP) *syscall.RawSockaddr {
+	sa := syscall.RawSockaddrInet4{Len: syscall.SizeofSockaddrInet4, Family: syscall.AF_INET}
+	copy(sa.Addr[:], ip)
+	return (*syscall.RawSockaddr)(unsafe.Pointer(&sa))
+}
+
+func cgoSockaddrInet6(ip IP) *syscall.RawSockaddr {
+	sa := syscall.RawSockaddrInet6{Len: syscall.SizeofSockaddrInet6, Family: syscall.AF_INET6}
+	copy(sa.Addr[:], ip)
+	return (*syscall.RawSockaddr)(unsafe.Pointer(&sa))
+}