libgo: update to Go1.16beta1 release

This does not yet include support for the //go:embed directive added
in this release.

	* Makefile.am (check-runtime): Don't create check-runtime-dir.
	(mostlyclean-local): Don't remove check-runtime-dir.
	(check-go-tool, check-vet): Copy in go.mod and modules.txt.
	(check-cgo-test, check-carchive-test): Add go.mod file.
	* Makefile.in: Regenerate.

Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/280172

1 files changed, 1 insertions, 22 deletions

diff --git a/libgo/go/runtime/mbarrier.go b/libgo/go/runtime/mbarrier.go
index 3bd8b34..3399033 100644
--- a/libgo/go/runtime/mbarrier.go
+++ b/libgo/go/runtime/mbarrier.go
@@ -270,28 +270,7 @@ func typedslicecopy(typ *_type, dstPtr unsafe.Pointer, dstLen int, srcPtr unsafe
 //go:linkname reflect_typedslicecopy reflect.typedslicecopy
 func reflect_typedslicecopy(elemType *_type, dst, src slice) int {
 	if elemType.ptrdata == 0 {
-		n := dst.len
-		if n > src.len {
-			n = src.len
-		}
-		if n == 0 {
-			return 0
-		}
-
-		size := uintptr(n) * elemType.size
-		if raceenabled {
-			callerpc := getcallerpc()
-			pc := funcPC(reflect_typedslicecopy)
-			racewriterangepc(dst.array, size, callerpc, pc)
-			racereadrangepc(src.array, size, callerpc, pc)
-		}
-		if msanenabled {
-			msanwrite(dst.array, size)
-			msanread(src.array, size)
-		}
-
-		memmove(dst.array, src.array, size)
-		return n
+		return slicecopy(dst.array, dst.len, src.array, src.len, elemType.size)
 	}
 	return typedslicecopy(elemType, dst.array, dst.len, src.array, src.len)
 }