Merge pull request #19662 from arjunroy/md_batch_static_idx

Reduce instruction count for CH2 metadata ops.

src/core/ext/transport/chttp2/transport/incoming_metadata.cc

@@ -38,7 +38,8 @@ grpc_error* grpc_chttp2_incoming_metadata_buffer_add(
     storage = static_cast<grpc_linked_mdelem*>(
         buffer->arena->Alloc(sizeof(grpc_linked_mdelem)));
   }
-  return grpc_metadata_batch_add_tail(&buffer->batch, storage, elem);
+  storage->md = elem;
+  return grpc_metadata_batch_link_tail(&buffer->batch, storage);
 }
 
 grpc_error* grpc_chttp2_incoming_metadata_buffer_replace_or_add(

src/core/ext/transport/chttp2/transport/parsing.cc

@@ -108,7 +108,7 @@ grpc_error* grpc_chttp2_perform_read(grpc_chttp2_transport* t,
     /* fallthrough */
     dts_fh_0:
     case GRPC_DTS_FH_0:
-      GPR_ASSERT(cur < end);
+      GPR_DEBUG_ASSERT(cur < end);
       t->incoming_frame_size = (static_cast<uint32_t>(*cur)) << 16;
       if (++cur == end) {
         t->deframe_state = GRPC_DTS_FH_1;
@@ -116,7 +116,7 @@ grpc_error* grpc_chttp2_perform_read(grpc_chttp2_transport* t,
       }
     /* fallthrough */
     case GRPC_DTS_FH_1:
-      GPR_ASSERT(cur < end);
+      GPR_DEBUG_ASSERT(cur < end);
       t->incoming_frame_size |= (static_cast<uint32_t>(*cur)) << 8;
       if (++cur == end) {
         t->deframe_state = GRPC_DTS_FH_2;
@@ -124,7 +124,7 @@ grpc_error* grpc_chttp2_perform_read(grpc_chttp2_transport* t,
       }
     /* fallthrough */
     case GRPC_DTS_FH_2:
-      GPR_ASSERT(cur < end);
+      GPR_DEBUG_ASSERT(cur < end);
       t->incoming_frame_size |= *cur;
       if (++cur == end) {
         t->deframe_state = GRPC_DTS_FH_3;
@@ -132,7 +132,7 @@ grpc_error* grpc_chttp2_perform_read(grpc_chttp2_transport* t,
       }
     /* fallthrough */
     case GRPC_DTS_FH_3:
-      GPR_ASSERT(cur < end);
+      GPR_DEBUG_ASSERT(cur < end);
       t->incoming_frame_type = *cur;
       if (++cur == end) {
         t->deframe_state = GRPC_DTS_FH_4;
@@ -140,7 +140,7 @@ grpc_error* grpc_chttp2_perform_read(grpc_chttp2_transport* t,
       }
     /* fallthrough */
     case GRPC_DTS_FH_4:
-      GPR_ASSERT(cur < end);
+      GPR_DEBUG_ASSERT(cur < end);
       t->incoming_frame_flags = *cur;
       if (++cur == end) {
         t->deframe_state = GRPC_DTS_FH_5;
@@ -148,7 +148,7 @@ grpc_error* grpc_chttp2_perform_read(grpc_chttp2_transport* t,
       }
     /* fallthrough */
     case GRPC_DTS_FH_5:
-      GPR_ASSERT(cur < end);
+      GPR_DEBUG_ASSERT(cur < end);
       t->incoming_stream_id = ((static_cast<uint32_t>(*cur)) & 0x7f) << 24;
       if (++cur == end) {
         t->deframe_state = GRPC_DTS_FH_6;
@@ -156,7 +156,7 @@ grpc_error* grpc_chttp2_perform_read(grpc_chttp2_transport* t,
       }
     /* fallthrough */
     case GRPC_DTS_FH_6:
-      GPR_ASSERT(cur < end);
+      GPR_DEBUG_ASSERT(cur < end);
       t->incoming_stream_id |= (static_cast<uint32_t>(*cur)) << 16;
       if (++cur == end) {
         t->deframe_state = GRPC_DTS_FH_7;
@@ -164,7 +164,7 @@ grpc_error* grpc_chttp2_perform_read(grpc_chttp2_transport* t,
       }
     /* fallthrough */
     case GRPC_DTS_FH_7:
-      GPR_ASSERT(cur < end);
+      GPR_DEBUG_ASSERT(cur < end);
       t->incoming_stream_id |= (static_cast<uint32_t>(*cur)) << 8;
       if (++cur == end) {
         t->deframe_state = GRPC_DTS_FH_8;
@@ -172,7 +172,7 @@ grpc_error* grpc_chttp2_perform_read(grpc_chttp2_transport* t,
       }
     /* fallthrough */
     case GRPC_DTS_FH_8:
-      GPR_ASSERT(cur < end);
+      GPR_DEBUG_ASSERT(cur < end);
       t->incoming_stream_id |= (static_cast<uint32_t>(*cur));
       t->deframe_state = GRPC_DTS_FRAME;
       err = init_frame_parser(t);
@@ -208,7 +208,7 @@ grpc_error* grpc_chttp2_perform_read(grpc_chttp2_transport* t,
       }
     /* fallthrough */
     case GRPC_DTS_FRAME:
-      GPR_ASSERT(cur < end);
+      GPR_DEBUG_ASSERT(cur < end);
       if (static_cast<uint32_t>(end - cur) == t->incoming_frame_size) {
         err = parse_frame_slice(
             t,
@@ -425,7 +425,7 @@ static void on_initial_header(void* tp, grpc_mdelem md) {
 
   grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(tp);
   grpc_chttp2_stream* s = t->incoming_stream;
-  GPR_ASSERT(s != nullptr);
+  GPR_DEBUG_ASSERT(s != nullptr);
 
   if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
     char* key = grpc_slice_to_c_string(GRPC_MDKEY(md));
@@ -473,7 +473,7 @@ static void on_initial_header(void* tp, grpc_mdelem md) {
   const size_t metadata_size_limit =
       t->settings[GRPC_ACKED_SETTINGS]
                  [GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE];
-  if (new_size > metadata_size_limit) {
+  if (GPR_UNLIKELY(new_size > metadata_size_limit)) {
     gpr_log(GPR_DEBUG,
             "received initial metadata size exceeds limit (%" PRIuPTR
             " vs. %" PRIuPTR ")",
@@ -504,7 +504,7 @@ static void on_trailing_header(void* tp, grpc_mdelem md) {
 
   grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(tp);
   grpc_chttp2_stream* s = t->incoming_stream;
-  GPR_ASSERT(s != nullptr);
+  GPR_DEBUG_ASSERT(s != nullptr);
 
   if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
     char* key = grpc_slice_to_c_string(GRPC_MDKEY(md));
@@ -627,7 +627,7 @@ static grpc_error* init_header_frame_parser(grpc_chttp2_transport* t,
   } else {
     t->incoming_stream = s;
   }
-  GPR_ASSERT(s != nullptr);
+  GPR_DEBUG_ASSERT(s != nullptr);
   s->stats.incoming.framing_bytes += 9;
   if (GPR_UNLIKELY(s->read_closed)) {
     GRPC_CHTTP2_IF_TRACING(gpr_log(

src/core/lib/slice/slice_internal.h

@@ -174,6 +174,17 @@ struct grpc_slice_refcount {
 
 namespace grpc_core {
 
+struct StaticSliceRefcount {
+  static grpc_slice_refcount kStaticSubRefcount;
+
+  StaticSliceRefcount(uint32_t index)
+      : base(&kStaticSubRefcount, grpc_slice_refcount::Type::STATIC),
+        index(index) {}
+
+  grpc_slice_refcount base;
+  uint32_t index;
+};
+
 extern grpc_slice_refcount kNoopRefcount;
 
 struct InternedSliceRefcount {

src/core/lib/transport/metadata_batch.cc

@@ -104,7 +104,7 @@ static grpc_error* maybe_link_callout(grpc_metadata_batch* batch,
   if (idx == GRPC_BATCH_CALLOUTS_COUNT) {
     return GRPC_ERROR_NONE;
   }
-  if (batch->idx.array[idx] == nullptr) {
+  if (GPR_LIKELY(batch->idx.array[idx] == nullptr)) {
     ++batch->list.default_count;
     batch->idx.array[idx] = storage;
     return GRPC_ERROR_NONE;

src/core/lib/transport/static_metadata.cc

@@ -116,330 +116,331 @@ static uint8_t g_bytes[] = {
     116, 105, 116, 121, 44,  100, 101, 102, 108, 97,  116, 101, 44,  103, 122,
     105, 112};
 
-static grpc_slice_refcount static_sub_refcnt;
-grpc_slice_refcount grpc_static_metadata_refcounts[GRPC_STATIC_MDSTR_COUNT] = {
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
-    grpc_slice_refcount(&static_sub_refcnt, grpc_slice_refcount::Type::STATIC),
+grpc_slice_refcount grpc_core::StaticSliceRefcount::kStaticSubRefcount;
+grpc_core::StaticSliceRefcount
+    grpc_static_metadata_refcounts[GRPC_STATIC_MDSTR_COUNT] = {
+        grpc_core::StaticSliceRefcount(0),
+        grpc_core::StaticSliceRefcount(1),
+        grpc_core::StaticSliceRefcount(2),
+        grpc_core::StaticSliceRefcount(3),
+        grpc_core::StaticSliceRefcount(4),
+        grpc_core::StaticSliceRefcount(5),
+        grpc_core::StaticSliceRefcount(6),
+        grpc_core::StaticSliceRefcount(7),
+        grpc_core::StaticSliceRefcount(8),
+        grpc_core::StaticSliceRefcount(9),
+        grpc_core::StaticSliceRefcount(10),
+        grpc_core::StaticSliceRefcount(11),
+        grpc_core::StaticSliceRefcount(12),
+        grpc_core::StaticSliceRefcount(13),
+        grpc_core::StaticSliceRefcount(14),
+        grpc_core::StaticSliceRefcount(15),
+        grpc_core::StaticSliceRefcount(16),
+        grpc_core::StaticSliceRefcount(17),
+        grpc_core::StaticSliceRefcount(18),
+        grpc_core::StaticSliceRefcount(19),
+        grpc_core::StaticSliceRefcount(20),
+        grpc_core::StaticSliceRefcount(21),
+        grpc_core::StaticSliceRefcount(22),
+        grpc_core::StaticSliceRefcount(23),
+        grpc_core::StaticSliceRefcount(24),
+        grpc_core::StaticSliceRefcount(25),
+        grpc_core::StaticSliceRefcount(26),
+        grpc_core::StaticSliceRefcount(27),
+        grpc_core::StaticSliceRefcount(28),
+        grpc_core::StaticSliceRefcount(29),
+        grpc_core::StaticSliceRefcount(30),
+        grpc_core::StaticSliceRefcount(31),
+        grpc_core::StaticSliceRefcount(32),
+        grpc_core::StaticSliceRefcount(33),
+        grpc_core::StaticSliceRefcount(34),
+        grpc_core::StaticSliceRefcount(35),
+        grpc_core::StaticSliceRefcount(36),
+        grpc_core::StaticSliceRefcount(37),
+        grpc_core::StaticSliceRefcount(38),
+        grpc_core::StaticSliceRefcount(39),
+        grpc_core::StaticSliceRefcount(40),
+        grpc_core::StaticSliceRefcount(41),
+        grpc_core::StaticSliceRefcount(42),
+        grpc_core::StaticSliceRefcount(43),
+        grpc_core::StaticSliceRefcount(44),
+        grpc_core::StaticSliceRefcount(45),
+        grpc_core::StaticSliceRefcount(46),
+        grpc_core::StaticSliceRefcount(47),
+        grpc_core::StaticSliceRefcount(48),
+        grpc_core::StaticSliceRefcount(49),
+        grpc_core::StaticSliceRefcount(50),
+        grpc_core::StaticSliceRefcount(51),
+        grpc_core::StaticSliceRefcount(52),
+        grpc_core::StaticSliceRefcount(53),
+        grpc_core::StaticSliceRefcount(54),
+        grpc_core::StaticSliceRefcount(55),
+        grpc_core::StaticSliceRefcount(56),
+        grpc_core::StaticSliceRefcount(57),
+        grpc_core::StaticSliceRefcount(58),
+        grpc_core::StaticSliceRefcount(59),
+        grpc_core::StaticSliceRefcount(60),
+        grpc_core::StaticSliceRefcount(61),
+        grpc_core::StaticSliceRefcount(62),
+        grpc_core::StaticSliceRefcount(63),
+        grpc_core::StaticSliceRefcount(64),
+        grpc_core::StaticSliceRefcount(65),
+        grpc_core::StaticSliceRefcount(66),
+        grpc_core::StaticSliceRefcount(67),
+        grpc_core::StaticSliceRefcount(68),
+        grpc_core::StaticSliceRefcount(69),
+        grpc_core::StaticSliceRefcount(70),
+        grpc_core::StaticSliceRefcount(71),
+        grpc_core::StaticSliceRefcount(72),
+        grpc_core::StaticSliceRefcount(73),
+        grpc_core::StaticSliceRefcount(74),
+        grpc_core::StaticSliceRefcount(75),
+        grpc_core::StaticSliceRefcount(76),
+        grpc_core::StaticSliceRefcount(77),
+        grpc_core::StaticSliceRefcount(78),
+        grpc_core::StaticSliceRefcount(79),
+        grpc_core::StaticSliceRefcount(80),
+        grpc_core::StaticSliceRefcount(81),
+        grpc_core::StaticSliceRefcount(82),
+        grpc_core::StaticSliceRefcount(83),
+        grpc_core::StaticSliceRefcount(84),
+        grpc_core::StaticSliceRefcount(85),
+        grpc_core::StaticSliceRefcount(86),
+        grpc_core::StaticSliceRefcount(87),
+        grpc_core::StaticSliceRefcount(88),
+        grpc_core::StaticSliceRefcount(89),
+        grpc_core::StaticSliceRefcount(90),
+        grpc_core::StaticSliceRefcount(91),
+        grpc_core::StaticSliceRefcount(92),
+        grpc_core::StaticSliceRefcount(93),
+        grpc_core::StaticSliceRefcount(94),
+        grpc_core::StaticSliceRefcount(95),
+        grpc_core::StaticSliceRefcount(96),
+        grpc_core::StaticSliceRefcount(97),
+        grpc_core::StaticSliceRefcount(98),
+        grpc_core::StaticSliceRefcount(99),
+        grpc_core::StaticSliceRefcount(100),
+        grpc_core::StaticSliceRefcount(101),
+        grpc_core::StaticSliceRefcount(102),
+        grpc_core::StaticSliceRefcount(103),
+        grpc_core::StaticSliceRefcount(104),
+        grpc_core::StaticSliceRefcount(105),
 };
 
 const grpc_core::StaticMetadataSlice
     grpc_static_slice_table[GRPC_STATIC_MDSTR_COUNT] = {
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[0], 5,
-                                       g_bytes + 0),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[1], 7,
-                                       g_bytes + 5),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[2], 7,
-                                       g_bytes + 12),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[3], 10,
-                                       g_bytes + 19),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[4], 7,
-                                       g_bytes + 29),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[5], 2,
-                                       g_bytes + 36),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[6], 12,
-                                       g_bytes + 38),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[7], 11,
-                                       g_bytes + 50),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[8], 16,
-                                       g_bytes + 61),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[9], 13,
-                                       g_bytes + 77),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[10], 20,
-                                       g_bytes + 90),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[11], 21,
-                                       g_bytes + 110),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[12], 13,
-                                       g_bytes + 131),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[13], 14,
-                                       g_bytes + 144),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[14], 12,
-                                       g_bytes + 158),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[15], 16,
-                                       g_bytes + 170),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[16], 15,
-                                       g_bytes + 186),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[17], 30,
-                                       g_bytes + 201),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[18], 37,
-                                       g_bytes + 231),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[19], 10,
-                                       g_bytes + 268),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[20], 4,
-                                       g_bytes + 278),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[21], 26,
-                                       g_bytes + 282),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[22], 22,
-                                       g_bytes + 308),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[23], 12,
-                                       g_bytes + 330),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[24], 1,
-                                       g_bytes + 342),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[25], 1,
-                                       g_bytes + 343),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[26], 1,
-                                       g_bytes + 344),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[27], 1,
-                                       g_bytes + 345),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[29], 19,
-                                       g_bytes + 346),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[30], 12,
-                                       g_bytes + 365),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[31], 30,
-                                       g_bytes + 377),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[32], 31,
-                                       g_bytes + 407),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[33], 36,
-                                       g_bytes + 438),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[34], 28,
-                                       g_bytes + 474),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[35], 80,
-                                       g_bytes + 502),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[36], 7,
-                                       g_bytes + 582),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[37], 4,
-                                       g_bytes + 589),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[38], 11,
-                                       g_bytes + 593),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[39], 3,
-                                       g_bytes + 604),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[40], 4,
-                                       g_bytes + 607),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[41], 1,
-                                       g_bytes + 611),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[42], 11,
-                                       g_bytes + 612),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[43], 4,
-                                       g_bytes + 623),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[44], 5,
-                                       g_bytes + 627),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[45], 3,
-                                       g_bytes + 632),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[46], 3,
-                                       g_bytes + 635),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[47], 3,
-                                       g_bytes + 638),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[48], 3,
-                                       g_bytes + 641),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[49], 3,
-                                       g_bytes + 644),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[50], 3,
-                                       g_bytes + 647),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[51], 3,
-                                       g_bytes + 650),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[52], 14,
-                                       g_bytes + 653),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[53], 13,
-                                       g_bytes + 667),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[54], 15,
-                                       g_bytes + 680),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[55], 13,
-                                       g_bytes + 695),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[56], 6,
-                                       g_bytes + 708),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[57], 27,
-                                       g_bytes + 714),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[58], 3,
-                                       g_bytes + 741),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[59], 5,
-                                       g_bytes + 744),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[60], 13,
-                                       g_bytes + 749),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[61], 13,
-                                       g_bytes + 762),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[62], 19,
-                                       g_bytes + 775),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[63], 16,
-                                       g_bytes + 794),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[64], 14,
-                                       g_bytes + 810),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[65], 16,
-                                       g_bytes + 824),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[66], 13,
-                                       g_bytes + 840),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[67], 6,
-                                       g_bytes + 853),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[68], 4,
-                                       g_bytes + 859),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[69], 4,
-                                       g_bytes + 863),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[70], 6,
-                                       g_bytes + 867),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[71], 7,
-                                       g_bytes + 873),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[72], 4,
-                                       g_bytes + 880),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[73], 8,
-                                       g_bytes + 884),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[74], 17,
-                                       g_bytes + 892),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[75], 13,
-                                       g_bytes + 909),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[76], 8,
-                                       g_bytes + 922),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[77], 19,
-                                       g_bytes + 930),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[78], 13,
-                                       g_bytes + 949),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[79], 4,
-                                       g_bytes + 962),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[80], 8,
-                                       g_bytes + 966),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[81], 12,
-                                       g_bytes + 974),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[82], 18,
-                                       g_bytes + 986),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[83], 19,
-                                       g_bytes + 1004),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[84], 5,
-                                       g_bytes + 1023),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[85], 7,
-                                       g_bytes + 1028),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[86], 7,
-                                       g_bytes + 1035),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[87], 11,
-                                       g_bytes + 1042),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[88], 6,
-                                       g_bytes + 1053),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[89], 10,
-                                       g_bytes + 1059),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[90], 25,
-                                       g_bytes + 1069),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[91], 17,
-                                       g_bytes + 1094),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[92], 4,
-                                       g_bytes + 1111),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[93], 3,
-                                       g_bytes + 1115),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[94], 16,
-                                       g_bytes + 1118),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[95], 1,
-                                       g_bytes + 1134),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[96], 8,
-                                       g_bytes + 1135),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[97], 8,
-                                       g_bytes + 1143),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[98], 16,
-                                       g_bytes + 1151),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[99], 4,
-                                       g_bytes + 1167),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[100], 3,
-                                       g_bytes + 1171),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[101], 11,
-                                       g_bytes + 1174),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[102], 16,
-                                       g_bytes + 1185),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[103], 13,
-                                       g_bytes + 1201),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[104], 12,
-                                       g_bytes + 1214),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[105], 21,
-                                       g_bytes + 1226),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[0].base,
+                                       5, g_bytes + 0),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[1].base,
+                                       7, g_bytes + 5),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[2].base,
+                                       7, g_bytes + 12),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[3].base,
+                                       10, g_bytes + 19),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[4].base,
+                                       7, g_bytes + 29),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[5].base,
+                                       2, g_bytes + 36),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[6].base,
+                                       12, g_bytes + 38),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[7].base,
+                                       11, g_bytes + 50),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[8].base,
+                                       16, g_bytes + 61),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[9].base,
+                                       13, g_bytes + 77),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[10].base,
+                                       20, g_bytes + 90),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[11].base,
+                                       21, g_bytes + 110),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[12].base,
+                                       13, g_bytes + 131),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[13].base,
+                                       14, g_bytes + 144),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[14].base,
+                                       12, g_bytes + 158),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[15].base,
+                                       16, g_bytes + 170),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[16].base,
+                                       15, g_bytes + 186),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[17].base,
+                                       30, g_bytes + 201),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[18].base,
+                                       37, g_bytes + 231),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[19].base,
+                                       10, g_bytes + 268),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[20].base,
+                                       4, g_bytes + 278),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[21].base,
+                                       26, g_bytes + 282),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[22].base,
+                                       22, g_bytes + 308),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[23].base,
+                                       12, g_bytes + 330),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[24].base,
+                                       1, g_bytes + 342),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[25].base,
+                                       1, g_bytes + 343),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[26].base,
+                                       1, g_bytes + 344),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[27].base,
+                                       1, g_bytes + 345),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[29].base,
+                                       19, g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[30].base,
+                                       12, g_bytes + 365),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[31].base,
+                                       30, g_bytes + 377),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[32].base,
+                                       31, g_bytes + 407),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[33].base,
+                                       36, g_bytes + 438),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[34].base,
+                                       28, g_bytes + 474),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[35].base,
+                                       80, g_bytes + 502),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[36].base,
+                                       7, g_bytes + 582),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[37].base,
+                                       4, g_bytes + 589),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[38].base,
+                                       11, g_bytes + 593),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[39].base,
+                                       3, g_bytes + 604),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[40].base,
+                                       4, g_bytes + 607),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[41].base,
+                                       1, g_bytes + 611),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[42].base,
+                                       11, g_bytes + 612),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[43].base,
+                                       4, g_bytes + 623),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[44].base,
+                                       5, g_bytes + 627),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[45].base,
+                                       3, g_bytes + 632),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[46].base,
+                                       3, g_bytes + 635),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[47].base,
+                                       3, g_bytes + 638),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[48].base,
+                                       3, g_bytes + 641),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[49].base,
+                                       3, g_bytes + 644),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[50].base,
+                                       3, g_bytes + 647),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[51].base,
+                                       3, g_bytes + 650),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[52].base,
+                                       14, g_bytes + 653),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[53].base,
+                                       13, g_bytes + 667),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[54].base,
+                                       15, g_bytes + 680),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[55].base,
+                                       13, g_bytes + 695),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[56].base,
+                                       6, g_bytes + 708),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[57].base,
+                                       27, g_bytes + 714),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[58].base,
+                                       3, g_bytes + 741),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[59].base,
+                                       5, g_bytes + 744),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[60].base,
+                                       13, g_bytes + 749),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[61].base,
+                                       13, g_bytes + 762),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[62].base,
+                                       19, g_bytes + 775),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[63].base,
+                                       16, g_bytes + 794),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[64].base,
+                                       14, g_bytes + 810),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[65].base,
+                                       16, g_bytes + 824),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[66].base,
+                                       13, g_bytes + 840),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[67].base,
+                                       6, g_bytes + 853),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[68].base,
+                                       4, g_bytes + 859),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[69].base,
+                                       4, g_bytes + 863),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[70].base,
+                                       6, g_bytes + 867),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[71].base,
+                                       7, g_bytes + 873),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[72].base,
+                                       4, g_bytes + 880),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[73].base,
+                                       8, g_bytes + 884),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[74].base,
+                                       17, g_bytes + 892),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[75].base,
+                                       13, g_bytes + 909),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[76].base,
+                                       8, g_bytes + 922),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[77].base,
+                                       19, g_bytes + 930),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[78].base,
+                                       13, g_bytes + 949),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[79].base,
+                                       4, g_bytes + 962),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[80].base,
+                                       8, g_bytes + 966),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[81].base,
+                                       12, g_bytes + 974),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[82].base,
+                                       18, g_bytes + 986),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[83].base,
+                                       19, g_bytes + 1004),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[84].base,
+                                       5, g_bytes + 1023),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[85].base,
+                                       7, g_bytes + 1028),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[86].base,
+                                       7, g_bytes + 1035),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[87].base,
+                                       11, g_bytes + 1042),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[88].base,
+                                       6, g_bytes + 1053),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[89].base,
+                                       10, g_bytes + 1059),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[90].base,
+                                       25, g_bytes + 1069),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[91].base,
+                                       17, g_bytes + 1094),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[92].base,
+                                       4, g_bytes + 1111),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[93].base,
+                                       3, g_bytes + 1115),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[94].base,
+                                       16, g_bytes + 1118),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[95].base,
+                                       1, g_bytes + 1134),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[96].base,
+                                       8, g_bytes + 1135),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[97].base,
+                                       8, g_bytes + 1143),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[98].base,
+                                       16, g_bytes + 1151),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[99].base,
+                                       4, g_bytes + 1167),
+        grpc_core::StaticMetadataSlice(
+            &grpc_static_metadata_refcounts[100].base, 3, g_bytes + 1171),
+        grpc_core::StaticMetadataSlice(
+            &grpc_static_metadata_refcounts[101].base, 11, g_bytes + 1174),
+        grpc_core::StaticMetadataSlice(
+            &grpc_static_metadata_refcounts[102].base, 16, g_bytes + 1185),
+        grpc_core::StaticMetadataSlice(
+            &grpc_static_metadata_refcounts[103].base, 13, g_bytes + 1201),
+        grpc_core::StaticMetadataSlice(
+            &grpc_static_metadata_refcounts[104].base, 12, g_bytes + 1214),
+        grpc_core::StaticMetadataSlice(
+            &grpc_static_metadata_refcounts[105].base, 21, g_bytes + 1226),
 };
 
 /* Warning: the core static metadata currently operates under the soft
@@ -937,514 +938,514 @@ grpc_mdelem grpc_static_mdelem_for_static_strings(intptr_t a, intptr_t b) {
 
 grpc_core::StaticMetadata grpc_static_mdelem_table[GRPC_STATIC_MDELEM_COUNT] = {
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[3], 10,
-                                       g_bytes + 19),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[3].base,
+                                       10, g_bytes + 19),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         0),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[1], 7,
-                                       g_bytes + 5),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[39], 3,
-                                       g_bytes + 604),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[1].base,
+                                       7, g_bytes + 5),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[39].base,
+                                       3, g_bytes + 604),
         1),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[1], 7,
-                                       g_bytes + 5),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[40], 4,
-                                       g_bytes + 607),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[1].base,
+                                       7, g_bytes + 5),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[40].base,
+                                       4, g_bytes + 607),
         2),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[0], 5,
-                                       g_bytes + 0),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[41], 1,
-                                       g_bytes + 611),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[0].base,
+                                       5, g_bytes + 0),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[41].base,
+                                       1, g_bytes + 611),
         3),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[0], 5,
-                                       g_bytes + 0),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[42], 11,
-                                       g_bytes + 612),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[0].base,
+                                       5, g_bytes + 0),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[42].base,
+                                       11, g_bytes + 612),
         4),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[4], 7,
-                                       g_bytes + 29),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[43], 4,
-                                       g_bytes + 623),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[4].base,
+                                       7, g_bytes + 29),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[43].base,
+                                       4, g_bytes + 623),
         5),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[4], 7,
-                                       g_bytes + 29),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[44], 5,
-                                       g_bytes + 627),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[4].base,
+                                       7, g_bytes + 29),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[44].base,
+                                       5, g_bytes + 627),
         6),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[2], 7,
-                                       g_bytes + 12),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[45], 3,
-                                       g_bytes + 632),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[2].base,
+                                       7, g_bytes + 12),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[45].base,
+                                       3, g_bytes + 632),
         7),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[2], 7,
-                                       g_bytes + 12),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[46], 3,
-                                       g_bytes + 635),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[2].base,
+                                       7, g_bytes + 12),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[46].base,
+                                       3, g_bytes + 635),
         8),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[2], 7,
-                                       g_bytes + 12),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[47], 3,
-                                       g_bytes + 638),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[2].base,
+                                       7, g_bytes + 12),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[47].base,
+                                       3, g_bytes + 638),
         9),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[2], 7,
-                                       g_bytes + 12),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[48], 3,
-                                       g_bytes + 641),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[2].base,
+                                       7, g_bytes + 12),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[48].base,
+                                       3, g_bytes + 641),
         10),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[2], 7,
-                                       g_bytes + 12),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[49], 3,
-                                       g_bytes + 644),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[2].base,
+                                       7, g_bytes + 12),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[49].base,
+                                       3, g_bytes + 644),
         11),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[2], 7,
-                                       g_bytes + 12),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[50], 3,
-                                       g_bytes + 647),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[2].base,
+                                       7, g_bytes + 12),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[50].base,
+                                       3, g_bytes + 647),
         12),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[2], 7,
-                                       g_bytes + 12),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[51], 3,
-                                       g_bytes + 650),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[2].base,
+                                       7, g_bytes + 12),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[51].base,
+                                       3, g_bytes + 650),
         13),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[52], 14,
-                                       g_bytes + 653),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[52].base,
+                                       14, g_bytes + 653),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         14),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[16], 15,
-                                       g_bytes + 186),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[53], 13,
-                                       g_bytes + 667),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[16].base,
+                                       15, g_bytes + 186),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[53].base,
+                                       13, g_bytes + 667),
         15),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[54], 15,
-                                       g_bytes + 680),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[54].base,
+                                       15, g_bytes + 680),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         16),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[55], 13,
-                                       g_bytes + 695),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[55].base,
+                                       13, g_bytes + 695),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         17),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[56], 6,
-                                       g_bytes + 708),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[56].base,
+                                       6, g_bytes + 708),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         18),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[57], 27,
-                                       g_bytes + 714),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[57].base,
+                                       27, g_bytes + 714),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         19),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[58], 3,
-                                       g_bytes + 741),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[58].base,
+                                       3, g_bytes + 741),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         20),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[59], 5,
-                                       g_bytes + 744),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[59].base,
+                                       5, g_bytes + 744),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         21),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[60], 13,
-                                       g_bytes + 749),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[60].base,
+                                       13, g_bytes + 749),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         22),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[61], 13,
-                                       g_bytes + 762),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[61].base,
+                                       13, g_bytes + 762),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         23),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[62], 19,
-                                       g_bytes + 775),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[62].base,
+                                       19, g_bytes + 775),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         24),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[15], 16,
-                                       g_bytes + 170),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[15].base,
+                                       16, g_bytes + 170),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         25),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[63], 16,
-                                       g_bytes + 794),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[63].base,
+                                       16, g_bytes + 794),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         26),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[64], 14,
-                                       g_bytes + 810),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[64].base,
+                                       14, g_bytes + 810),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         27),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[65], 16,
-                                       g_bytes + 824),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[65].base,
+                                       16, g_bytes + 824),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         28),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[66], 13,
-                                       g_bytes + 840),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[66].base,
+                                       13, g_bytes + 840),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         29),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[14], 12,
-                                       g_bytes + 158),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[14].base,
+                                       12, g_bytes + 158),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         30),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[67], 6,
-                                       g_bytes + 853),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[67].base,
+                                       6, g_bytes + 853),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         31),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[68], 4,
-                                       g_bytes + 859),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[68].base,
+                                       4, g_bytes + 859),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         32),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[69], 4,
-                                       g_bytes + 863),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[69].base,
+                                       4, g_bytes + 863),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         33),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[70], 6,
-                                       g_bytes + 867),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[70].base,
+                                       6, g_bytes + 867),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         34),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[71], 7,
-                                       g_bytes + 873),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[71].base,
+                                       7, g_bytes + 873),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         35),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[72], 4,
-                                       g_bytes + 880),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[72].base,
+                                       4, g_bytes + 880),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         36),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[20], 4,
-                                       g_bytes + 278),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[20].base,
+                                       4, g_bytes + 278),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         37),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[73], 8,
-                                       g_bytes + 884),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[73].base,
+                                       8, g_bytes + 884),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         38),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[74], 17,
-                                       g_bytes + 892),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[74].base,
+                                       17, g_bytes + 892),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         39),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[75], 13,
-                                       g_bytes + 909),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[75].base,
+                                       13, g_bytes + 909),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         40),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[76], 8,
-                                       g_bytes + 922),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[76].base,
+                                       8, g_bytes + 922),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         41),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[77], 19,
-                                       g_bytes + 930),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[77].base,
+                                       19, g_bytes + 930),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         42),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[78], 13,
-                                       g_bytes + 949),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[78].base,
+                                       13, g_bytes + 949),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         43),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[79], 4,
-                                       g_bytes + 962),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[79].base,
+                                       4, g_bytes + 962),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         44),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[80], 8,
-                                       g_bytes + 966),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[80].base,
+                                       8, g_bytes + 966),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         45),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[81], 12,
-                                       g_bytes + 974),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[81].base,
+                                       12, g_bytes + 974),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         46),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[82], 18,
-                                       g_bytes + 986),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[82].base,
+                                       18, g_bytes + 986),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         47),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[83], 19,
-                                       g_bytes + 1004),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[83].base,
+                                       19, g_bytes + 1004),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         48),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[84], 5,
-                                       g_bytes + 1023),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[84].base,
+                                       5, g_bytes + 1023),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         49),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[85], 7,
-                                       g_bytes + 1028),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[85].base,
+                                       7, g_bytes + 1028),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         50),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[86], 7,
-                                       g_bytes + 1035),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[86].base,
+                                       7, g_bytes + 1035),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         51),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[87], 11,
-                                       g_bytes + 1042),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[87].base,
+                                       11, g_bytes + 1042),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         52),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[88], 6,
-                                       g_bytes + 1053),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[88].base,
+                                       6, g_bytes + 1053),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         53),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[89], 10,
-                                       g_bytes + 1059),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[89].base,
+                                       10, g_bytes + 1059),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         54),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[90], 25,
-                                       g_bytes + 1069),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[90].base,
+                                       25, g_bytes + 1069),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         55),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[91], 17,
-                                       g_bytes + 1094),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[91].base,
+                                       17, g_bytes + 1094),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         56),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[19], 10,
-                                       g_bytes + 268),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[19].base,
+                                       10, g_bytes + 268),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         57),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[92], 4,
-                                       g_bytes + 1111),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[92].base,
+                                       4, g_bytes + 1111),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         58),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[93], 3,
-                                       g_bytes + 1115),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[93].base,
+                                       3, g_bytes + 1115),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         59),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[94], 16,
-                                       g_bytes + 1118),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[94].base,
+                                       16, g_bytes + 1118),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         60),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[7], 11,
-                                       g_bytes + 50),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[95], 1,
-                                       g_bytes + 1134),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[7].base,
+                                       11, g_bytes + 50),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[95].base,
+                                       1, g_bytes + 1134),
         61),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[7], 11,
-                                       g_bytes + 50),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[24], 1,
-                                       g_bytes + 342),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[7].base,
+                                       11, g_bytes + 50),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[24].base,
+                                       1, g_bytes + 342),
         62),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[7], 11,
-                                       g_bytes + 50),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[25], 1,
-                                       g_bytes + 343),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[7].base,
+                                       11, g_bytes + 50),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[25].base,
+                                       1, g_bytes + 343),
         63),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[9], 13,
-                                       g_bytes + 77),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[96], 8,
-                                       g_bytes + 1135),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[9].base,
+                                       13, g_bytes + 77),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[96].base,
+                                       8, g_bytes + 1135),
         64),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[9], 13,
-                                       g_bytes + 77),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[37], 4,
-                                       g_bytes + 589),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[9].base,
+                                       13, g_bytes + 77),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[37].base,
+                                       4, g_bytes + 589),
         65),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[9], 13,
-                                       g_bytes + 77),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[36], 7,
-                                       g_bytes + 582),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[9].base,
+                                       13, g_bytes + 77),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[36].base,
+                                       7, g_bytes + 582),
         66),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[5], 2,
-                                       g_bytes + 36),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[97], 8,
-                                       g_bytes + 1143),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[5].base,
+                                       2, g_bytes + 36),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[97].base,
+                                       8, g_bytes + 1143),
         67),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[14], 12,
-                                       g_bytes + 158),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[98], 16,
-                                       g_bytes + 1151),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[14].base,
+                                       12, g_bytes + 158),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[98].base,
+                                       16, g_bytes + 1151),
         68),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[4], 7,
-                                       g_bytes + 29),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[99], 4,
-                                       g_bytes + 1167),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[4].base,
+                                       7, g_bytes + 29),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[99].base,
+                                       4, g_bytes + 1167),
         69),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[1], 7,
-                                       g_bytes + 5),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[100], 3,
-                                       g_bytes + 1171),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[1].base,
+                                       7, g_bytes + 5),
+        grpc_core::StaticMetadataSlice(
+            &grpc_static_metadata_refcounts[100].base, 3, g_bytes + 1171),
         70),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[16], 15,
-                                       g_bytes + 186),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[16].base,
+                                       15, g_bytes + 186),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         71),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[15], 16,
-                                       g_bytes + 170),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[96], 8,
-                                       g_bytes + 1135),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[15].base,
+                                       16, g_bytes + 170),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[96].base,
+                                       8, g_bytes + 1135),
         72),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[15], 16,
-                                       g_bytes + 170),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[37], 4,
-                                       g_bytes + 589),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[15].base,
+                                       16, g_bytes + 170),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[37].base,
+                                       4, g_bytes + 589),
         73),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[101], 11,
-                                       g_bytes + 1174),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28], 0,
-                                       g_bytes + 346),
+        grpc_core::StaticMetadataSlice(
+            &grpc_static_metadata_refcounts[101].base, 11, g_bytes + 1174),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[28].base,
+                                       0, g_bytes + 346),
         74),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[10], 20,
-                                       g_bytes + 90),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[96], 8,
-                                       g_bytes + 1135),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[10].base,
+                                       20, g_bytes + 90),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[96].base,
+                                       8, g_bytes + 1135),
         75),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[10], 20,
-                                       g_bytes + 90),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[36], 7,
-                                       g_bytes + 582),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[10].base,
+                                       20, g_bytes + 90),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[36].base,
+                                       7, g_bytes + 582),
         76),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[10], 20,
-                                       g_bytes + 90),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[102], 16,
-                                       g_bytes + 1185),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[10].base,
+                                       20, g_bytes + 90),
+        grpc_core::StaticMetadataSlice(
+            &grpc_static_metadata_refcounts[102].base, 16, g_bytes + 1185),
         77),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[10], 20,
-                                       g_bytes + 90),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[37], 4,
-                                       g_bytes + 589),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[10].base,
+                                       20, g_bytes + 90),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[37].base,
+                                       4, g_bytes + 589),
         78),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[10], 20,
-                                       g_bytes + 90),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[103], 13,
-                                       g_bytes + 1201),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[10].base,
+                                       20, g_bytes + 90),
+        grpc_core::StaticMetadataSlice(
+            &grpc_static_metadata_refcounts[103].base, 13, g_bytes + 1201),
         79),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[10], 20,
-                                       g_bytes + 90),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[104], 12,
-                                       g_bytes + 1214),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[10].base,
+                                       20, g_bytes + 90),
+        grpc_core::StaticMetadataSlice(
+            &grpc_static_metadata_refcounts[104].base, 12, g_bytes + 1214),
         80),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[10], 20,
-                                       g_bytes + 90),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[105], 21,
-                                       g_bytes + 1226),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[10].base,
+                                       20, g_bytes + 90),
+        grpc_core::StaticMetadataSlice(
+            &grpc_static_metadata_refcounts[105].base, 21, g_bytes + 1226),
         81),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[16], 15,
-                                       g_bytes + 186),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[96], 8,
-                                       g_bytes + 1135),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[16].base,
+                                       15, g_bytes + 186),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[96].base,
+                                       8, g_bytes + 1135),
         82),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[16], 15,
-                                       g_bytes + 186),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[37], 4,
-                                       g_bytes + 589),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[16].base,
+                                       15, g_bytes + 186),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[37].base,
+                                       4, g_bytes + 589),
         83),
     grpc_core::StaticMetadata(
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[16], 15,
-                                       g_bytes + 186),
-        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[103], 13,
-                                       g_bytes + 1201),
+        grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[16].base,
+                                       15, g_bytes + 186),
+        grpc_core::StaticMetadataSlice(
+            &grpc_static_metadata_refcounts[103].base, 13, g_bytes + 1201),
         84),
 };
 const uint8_t grpc_static_accept_encoding_metadata[8] = {0,  75, 76, 77,

src/core/lib/transport/static_metadata.h

@@ -260,15 +260,18 @@ extern const grpc_core::StaticMetadataSlice
 #define GRPC_MDSTR_IDENTITY_COMMA_DEFLATE_COMMA_GZIP \
   (grpc_static_slice_table[105])
 
-extern grpc_slice_refcount
+namespace grpc_core {
+struct StaticSliceRefcount;
+}
+extern grpc_core::StaticSliceRefcount
     grpc_static_metadata_refcounts[GRPC_STATIC_MDSTR_COUNT];
 #define GRPC_IS_STATIC_METADATA_STRING(slice) \
   ((slice).refcount != NULL &&                \
    (slice).refcount->GetType() == grpc_slice_refcount::Type::STATIC)
 
-#define GRPC_STATIC_METADATA_INDEX(static_slice) \
-  (static_cast<intptr_t>(                        \
-      ((static_slice).refcount - grpc_static_metadata_refcounts)))
+#define GRPC_STATIC_METADATA_INDEX(static_slice)                              \
+  (reinterpret_cast<grpc_core::StaticSliceRefcount*>((static_slice).refcount) \
+       ->index)
 
 #define GRPC_STATIC_MDELEM_COUNT 85
 extern grpc_core::StaticMetadata
@@ -519,11 +522,14 @@ typedef union {
   } named;
 } grpc_metadata_batch_callouts;
 
-#define GRPC_BATCH_INDEX_OF(slice)                                        \
-  (GRPC_IS_STATIC_METADATA_STRING((slice))                                \
-       ? static_cast<grpc_metadata_batch_callouts_index>(                 \
-             GPR_CLAMP(GRPC_STATIC_METADATA_INDEX((slice)), 0,            \
-                       static_cast<intptr_t>(GRPC_BATCH_CALLOUTS_COUNT))) \
+#define GRPC_BATCH_INDEX_OF(slice)                                             \
+  (GRPC_IS_STATIC_METADATA_STRING((slice)) &&                                  \
+           reinterpret_cast<grpc_core::StaticSliceRefcount*>((slice).refcount) \
+                   ->index <= static_cast<uint32_t>(GRPC_BATCH_CALLOUTS_COUNT) \
+       ? static_cast<grpc_metadata_batch_callouts_index>(                      \
+             reinterpret_cast<grpc_core::StaticSliceRefcount*>(                \
+                 (slice).refcount)                                             \
+                 ->index)                                                      \
        : GRPC_BATCH_CALLOUTS_COUNT)
 
 extern const uint8_t grpc_static_accept_encoding_metadata[8];

tools/codegen/core/gen_static_metadata.py

@@ -393,7 +393,7 @@ for i, elem in enumerate(all_strs):
 
 def slice_def(i):
     return (
-        'grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[%d], %d, g_bytes+%d)'
+        'grpc_core::StaticMetadataSlice(&grpc_static_metadata_refcounts[%d].base, %d, g_bytes+%d)'
     ) % (i, len(all_strs[i]), id2strofs[i])
 
 
@@ -416,14 +416,14 @@ print >> H
 print >> C, 'static uint8_t g_bytes[] = {%s};' % (','.join(
     '%d' % ord(c) for c in ''.join(all_strs)))
 print >> C
-print >> C, ('static grpc_slice_refcount static_sub_refcnt;')
-print >> H, ('extern grpc_slice_refcount '
+print >> H, ('namespace grpc_core { struct StaticSliceRefcount; }')
+print >> H, ('extern grpc_core::StaticSliceRefcount '
              'grpc_static_metadata_refcounts[GRPC_STATIC_MDSTR_COUNT];')
-print >> C, ('grpc_slice_refcount '
+print >> C, 'grpc_slice_refcount grpc_core::StaticSliceRefcount::kStaticSubRefcount;'
+print >> C, ('grpc_core::StaticSliceRefcount '
              'grpc_static_metadata_refcounts[GRPC_STATIC_MDSTR_COUNT] = {')
 for i, elem in enumerate(all_strs):
-    print >> C, ('  grpc_slice_refcount(&static_sub_refcnt, '
-                 'grpc_slice_refcount::Type::STATIC), ')
+    print >> C, '  grpc_core::StaticSliceRefcount(%d), ' % i
 print >> C, '};'
 print >> C
 print >> H, '#define GRPC_IS_STATIC_METADATA_STRING(slice) \\'
@@ -438,8 +438,7 @@ for i, elem in enumerate(all_strs):
 print >> C, '};'
 print >> C
 print >> H, '#define GRPC_STATIC_METADATA_INDEX(static_slice) \\'
-print >> H, ('  (static_cast<intptr_t>(((static_slice).refcount - '
-             'grpc_static_metadata_refcounts)))')
+print >> H, '(reinterpret_cast<grpc_core::StaticSliceRefcount*>((static_slice).refcount)->index)'
 print >> H
 
 print >> D, '# hpack fuzzing dictionary'
@@ -598,8 +597,26 @@ for elem in METADATA_BATCH_CALLOUTS:
 print >> H, '  } named;'
 print >> H, '} grpc_metadata_batch_callouts;'
 print >> H
-print >> H, '#define GRPC_BATCH_INDEX_OF(slice) \\'
-print >> H, '  (GRPC_IS_STATIC_METADATA_STRING((slice)) ? static_cast<grpc_metadata_batch_callouts_index>(GPR_CLAMP(GRPC_STATIC_METADATA_INDEX((slice)), 0, static_cast<intptr_t>(GRPC_BATCH_CALLOUTS_COUNT))) : GRPC_BATCH_CALLOUTS_COUNT)'
+
+batch_idx_of_hdr = '#define GRPC_BATCH_INDEX_OF(slice) \\'
+static_slice = 'GRPC_IS_STATIC_METADATA_STRING((slice))'
+slice_to_slice_ref = '(slice).refcount'
+static_slice_ref_type = 'grpc_core::StaticSliceRefcount*'
+slice_ref_as_static = ('reinterpret_cast<' + static_slice_ref_type + '>(' +
+                       slice_to_slice_ref + ')')
+slice_ref_idx = slice_ref_as_static + '->index'
+batch_idx_type = 'grpc_metadata_batch_callouts_index'
+slice_ref_idx_to_batch_idx = (
+    'static_cast<' + batch_idx_type + '>(' + slice_ref_idx + ')')
+batch_invalid_idx = 'GRPC_BATCH_CALLOUTS_COUNT'
+batch_invalid_u32 = 'static_cast<uint32_t>(' + batch_invalid_idx + ')'
+# Assemble GRPC_BATCH_INDEX_OF(slice) macro as a join for ease of reading.
+batch_idx_of_pieces = [
+    batch_idx_of_hdr, '\n', '(', static_slice, '&&', slice_ref_idx, '<=',
+    batch_invalid_u32, '?', slice_ref_idx_to_batch_idx, ':', batch_invalid_idx,
+    ')'
+]
+print >> H, ''.join(batch_idx_of_pieces)
 print >> H
 
 print >> H, 'extern const uint8_t grpc_static_accept_encoding_metadata[%d];' % (