Merge commit '4b414d60eeaa00f6fbbbdb2f937b26601e903ee9' into chore-deps-update-utf8-range

third_party/utf8_range/BUILD.bazel

@@ -4,6 +4,12 @@
 # license that can be found in the LICENSE file or at
 # https://opensource.org/licenses/MIT.
 
+DEFAULT_VISIBILITY = [
+    "//third_party/protobuf:__subpackages__",
+    "//:__subpackages__",
+    "//util/utf8/internal:__subpackages__",
+]
+
 package(default_visibility = ["//visibility:public"])
 
 licenses(["notice"])

third_party/utf8_range/utf8_validity.cc

@@ -133,6 +133,7 @@ size_t ValidUTF8Span(const char* data, const char* end) {
   return err_pos + (1 - ReturnPosition);
 }
 
+#ifdef __SSE4_1__
 /* Returns the number of bytes needed to skip backwards to get to the first
    byte of codepoint.
  */
@@ -148,6 +149,7 @@ inline int CodepointSkipBackwards(int32_t codepoint_word) {
   }
   return 0;
 }
+#endif  // __SSE4_1__
 
 /* Skipping over ASCII as much as possible, per 8 bytes. It is intentional
    as most strings to check for validity consist only of 1 byte codepoints.