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, 0 insertions, 50 deletions

diff --git a/libgo/go/runtime/string.go b/libgo/go/runtime/string.go
index c0058be..44b9314 100644
--- a/libgo/go/runtime/string.go
+++ b/libgo/go/runtime/string.go
@@ -327,22 +327,6 @@ func gostringn(p *byte, l int) string {
 	return s
 }
 
-func index(s, t string) int {
-	if len(t) == 0 {
-		return 0
-	}
-	for i := 0; i < len(s); i++ {
-		if s[i] == t[0] && hasPrefix(s[i:], t) {
-			return i
-		}
-	}
-	return -1
-}
-
-func contains(s, t string) bool {
-	return index(s, t) >= 0
-}
-
 func hasPrefix(s, prefix string) bool {
 	return len(s) >= len(prefix) && s[:len(prefix)] == prefix
 }
@@ -512,37 +496,3 @@ func __go_byte_array_to_string(p unsafe.Pointer, l int) string {
 func __go_string_to_byte_array(s string) []byte {
 	return stringtoslicebyte(nil, s)
 }
-
-// parseRelease parses a dot-separated version number. It follows the
-// semver syntax, but allows the minor and patch versions to be
-// elided.
-func parseRelease(rel string) (major, minor, patch int, ok bool) {
-	// Strip anything after a dash or plus.
-	for i := 0; i < len(rel); i++ {
-		if rel[i] == '-' || rel[i] == '+' {
-			rel = rel[:i]
-			break
-		}
-	}
-
-	next := func() (int, bool) {
-		for i := 0; i < len(rel); i++ {
-			if rel[i] == '.' {
-				ver, ok := atoi(rel[:i])
-				rel = rel[i+1:]
-				return ver, ok
-			}
-		}
-		ver, ok := atoi(rel)
-		rel = ""
-		return ver, ok
-	}
-	if major, ok = next(); !ok || rel == "" {
-		return
-	}
-	if minor, ok = next(); !ok || rel == "" {
-		return
-	}
-	patch, ok = next()
-	return
-}