Faster comparison

src/core/lib/transport/metadata.c

@@ -260,10 +260,13 @@ grpc_mdelem grpc_mdelem_create(
     return GRPC_MAKE_MDELEM(allocated, GRPC_MDELEM_STORAGE_ALLOCATED);
   }
 
-  grpc_mdelem static_elem = grpc_static_mdelem_for_static_strings(
-      grpc_static_metadata_index(key), grpc_static_metadata_index(value));
-  if (!GRPC_MDISNULL(static_elem)) {
-    return static_elem;
+  if (grpc_is_static_metadata_string(key) &&
+      grpc_is_static_metadata_string(value)) {
+    grpc_mdelem static_elem = grpc_static_mdelem_for_static_strings(
+        grpc_static_metadata_index(key), grpc_static_metadata_index(value));
+    if (!GRPC_MDISNULL(static_elem)) {
+      return static_elem;
+    }
   }
 
   uint32_t hash =

src/core/lib/transport/static_metadata.c

@@ -43,7 +43,7 @@
 
 #include "src/core/lib/slice/slice_internal.h"
 
-static uint8_t g_raw_bytes[] = {
+static uint8_t g_bytes[] = {
     48,  49,  50,  50,  48,  48,  50,  48,  52,  50,  48,  54,  51,  48,  52,
     52,  48,  48,  52,  48,  52,  53,  48,  48,  97,  99,  99,  101, 112, 116,
     97,  99,  99,  101, 112, 116, 45,  99,  104, 97,  114, 115, 101, 116, 97,
@@ -118,292 +118,174 @@ static void static_ref(void *unused) {}
 static void static_unref(grpc_exec_ctx *exec_ctx, void *unused) {}
 static const grpc_slice_refcount_vtable static_vtable = {
     static_ref, static_unref, grpc_static_slice_eq, grpc_static_slice_hash};
-static grpc_slice_refcount g_refcnt = {&static_vtable};
+typedef struct {
+  grpc_slice_refcount base;
+  const uint16_t offset;
+  const uint16_t length;
+} static_slice_refcount;
+static static_slice_refcount g_refcnts[GRPC_STATIC_MDSTR_COUNT] = {
+    {{&static_vtable}, 0, 1},    {{&static_vtable}, 1, 1},
+    {{&static_vtable}, 2, 1},    {{&static_vtable}, 3, 3},
+    {{&static_vtable}, 6, 3},    {{&static_vtable}, 9, 3},
+    {{&static_vtable}, 12, 3},   {{&static_vtable}, 15, 3},
+    {{&static_vtable}, 18, 3},   {{&static_vtable}, 21, 3},
+    {{&static_vtable}, 24, 6},   {{&static_vtable}, 30, 14},
+    {{&static_vtable}, 44, 15},  {{&static_vtable}, 59, 15},
+    {{&static_vtable}, 74, 13},  {{&static_vtable}, 87, 27},
+    {{&static_vtable}, 114, 3},  {{&static_vtable}, 117, 5},
+    {{&static_vtable}, 122, 16}, {{&static_vtable}, 138, 10},
+    {{&static_vtable}, 148, 13}, {{&static_vtable}, 161, 13},
+    {{&static_vtable}, 174, 19}, {{&static_vtable}, 193, 16},
+    {{&static_vtable}, 209, 16}, {{&static_vtable}, 225, 14},
+    {{&static_vtable}, 239, 16}, {{&static_vtable}, 255, 13},
+    {{&static_vtable}, 268, 12}, {{&static_vtable}, 280, 6},
+    {{&static_vtable}, 286, 4},  {{&static_vtable}, 290, 7},
+    {{&static_vtable}, 297, 12}, {{&static_vtable}, 309, 0},
+    {{&static_vtable}, 309, 4},  {{&static_vtable}, 313, 6},
+    {{&static_vtable}, 319, 7},  {{&static_vtable}, 326, 4},
+    {{&static_vtable}, 330, 3},  {{&static_vtable}, 333, 4},
+    {{&static_vtable}, 337, 20}, {{&static_vtable}, 357, 30},
+    {{&static_vtable}, 387, 31}, {{&static_vtable}, 418, 12},
+    {{&static_vtable}, 430, 19}, {{&static_vtable}, 449, 13},
+    {{&static_vtable}, 462, 30}, {{&static_vtable}, 492, 12},
+    {{&static_vtable}, 504, 16}, {{&static_vtable}, 520, 14},
+    {{&static_vtable}, 534, 11}, {{&static_vtable}, 545, 12},
+    {{&static_vtable}, 557, 16}, {{&static_vtable}, 573, 4},
+    {{&static_vtable}, 577, 13}, {{&static_vtable}, 590, 4},
+    {{&static_vtable}, 594, 4},  {{&static_vtable}, 598, 5},
+    {{&static_vtable}, 603, 8},  {{&static_vtable}, 611, 16},
+    {{&static_vtable}, 627, 21}, {{&static_vtable}, 648, 13},
+    {{&static_vtable}, 661, 8},  {{&static_vtable}, 669, 17},
+    {{&static_vtable}, 686, 13}, {{&static_vtable}, 699, 8},
+    {{&static_vtable}, 707, 19}, {{&static_vtable}, 726, 13},
+    {{&static_vtable}, 739, 11}, {{&static_vtable}, 750, 8},
+    {{&static_vtable}, 758, 4},  {{&static_vtable}, 762, 8},
+    {{&static_vtable}, 770, 12}, {{&static_vtable}, 782, 7},
+    {{&static_vtable}, 789, 5},  {{&static_vtable}, 794, 4},
+    {{&static_vtable}, 798, 18}, {{&static_vtable}, 816, 19},
+    {{&static_vtable}, 835, 3},  {{&static_vtable}, 838, 5},
+    {{&static_vtable}, 843, 7},  {{&static_vtable}, 850, 7},
+    {{&static_vtable}, 857, 11}, {{&static_vtable}, 868, 7},
+    {{&static_vtable}, 875, 6},  {{&static_vtable}, 881, 10},
+    {{&static_vtable}, 891, 1},  {{&static_vtable}, 892, 36},
+    {{&static_vtable}, 928, 11}, {{&static_vtable}, 939, 7},
+    {{&static_vtable}, 946, 25}, {{&static_vtable}, 971, 2},
+    {{&static_vtable}, 973, 8},  {{&static_vtable}, 981, 17},
+    {{&static_vtable}, 998, 10}, {{&static_vtable}, 1008, 4},
+    {{&static_vtable}, 1012, 3}, {{&static_vtable}, 1015, 16},
+};
 
 bool grpc_is_static_metadata_string(grpc_slice slice) {
   return slice.refcount != NULL && slice.refcount->vtable == &static_vtable;
 }
 
 const grpc_slice grpc_static_slice_table[GRPC_STATIC_MDSTR_COUNT] = {
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 0, .length = 1}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 1, .length = 1}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 2, .length = 1}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 3, .length = 3}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 6, .length = 3}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 9, .length = 3}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 12, .length = 3}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 15, .length = 3}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 18, .length = 3}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 21, .length = 3}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 24, .length = 6}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 30, .length = 14}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 44, .length = 15}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 59, .length = 15}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 74, .length = 13}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 87, .length = 27}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 114, .length = 3}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 117, .length = 5}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 122, .length = 16}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 138, .length = 10}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 148, .length = 13}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 161, .length = 13}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 174, .length = 19}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 193, .length = 16}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 209, .length = 16}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 225, .length = 14}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 239, .length = 16}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 255, .length = 13}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 268, .length = 12}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 280, .length = 6}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 286, .length = 4}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 290, .length = 7}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 297, .length = 12}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 4}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 313, .length = 6}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 319, .length = 7}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 326, .length = 4}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 330, .length = 3}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 333, .length = 4}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 337, .length = 20}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 357, .length = 30}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 387, .length = 31}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 418, .length = 12}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 430, .length = 19}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 449, .length = 13}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 462, .length = 30}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 492, .length = 12}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 504, .length = 16}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 520, .length = 14}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 534, .length = 11}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 545, .length = 12}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 557, .length = 16}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 573, .length = 4}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 577, .length = 13}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 590, .length = 4}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 594, .length = 4}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 598, .length = 5}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 603, .length = 8}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 611, .length = 16}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 627, .length = 21}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 648, .length = 13}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 661, .length = 8}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 669, .length = 17}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 686, .length = 13}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 699, .length = 8}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 707, .length = 19}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 726, .length = 13}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 739, .length = 11}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 750, .length = 8}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 758, .length = 4}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 762, .length = 8}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 770, .length = 12}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 782, .length = 7}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 789, .length = 5}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 794, .length = 4}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 798, .length = 18}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 816, .length = 19}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 835, .length = 3}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 838, .length = 5}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 843, .length = 7}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 850, .length = 7}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 857, .length = 11}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 868, .length = 7}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 875, .length = 6}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 881, .length = 10}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 891, .length = 1}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 892, .length = 36}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 928, .length = 11}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 939, .length = 7}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 946, .length = 25}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 971, .length = 2}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 973, .length = 8}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 981, .length = 17}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 998, .length = 10}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 1008, .length = 4}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 1012, .length = 3}},
-    {.refcount = &g_refcnt,
-     .data.refcounted = {.bytes = g_raw_bytes + 1015, .length = 16}},
+    {.refcount = &g_refcnts[0].base, .data.refcounted = {g_bytes + 0, 1}},
+    {.refcount = &g_refcnts[1].base, .data.refcounted = {g_bytes + 1, 1}},
+    {.refcount = &g_refcnts[2].base, .data.refcounted = {g_bytes + 2, 1}},
+    {.refcount = &g_refcnts[3].base, .data.refcounted = {g_bytes + 3, 3}},
+    {.refcount = &g_refcnts[4].base, .data.refcounted = {g_bytes + 6, 3}},
+    {.refcount = &g_refcnts[5].base, .data.refcounted = {g_bytes + 9, 3}},
+    {.refcount = &g_refcnts[6].base, .data.refcounted = {g_bytes + 12, 3}},
+    {.refcount = &g_refcnts[7].base, .data.refcounted = {g_bytes + 15, 3}},
+    {.refcount = &g_refcnts[8].base, .data.refcounted = {g_bytes + 18, 3}},
+    {.refcount = &g_refcnts[9].base, .data.refcounted = {g_bytes + 21, 3}},
+    {.refcount = &g_refcnts[10].base, .data.refcounted = {g_bytes + 24, 6}},
+    {.refcount = &g_refcnts[11].base, .data.refcounted = {g_bytes + 30, 14}},
+    {.refcount = &g_refcnts[12].base, .data.refcounted = {g_bytes + 44, 15}},
+    {.refcount = &g_refcnts[13].base, .data.refcounted = {g_bytes + 59, 15}},
+    {.refcount = &g_refcnts[14].base, .data.refcounted = {g_bytes + 74, 13}},
+    {.refcount = &g_refcnts[15].base, .data.refcounted = {g_bytes + 87, 27}},
+    {.refcount = &g_refcnts[16].base, .data.refcounted = {g_bytes + 114, 3}},
+    {.refcount = &g_refcnts[17].base, .data.refcounted = {g_bytes + 117, 5}},
+    {.refcount = &g_refcnts[18].base, .data.refcounted = {g_bytes + 122, 16}},
+    {.refcount = &g_refcnts[19].base, .data.refcounted = {g_bytes + 138, 10}},
+    {.refcount = &g_refcnts[20].base, .data.refcounted = {g_bytes + 148, 13}},
+    {.refcount = &g_refcnts[21].base, .data.refcounted = {g_bytes + 161, 13}},
+    {.refcount = &g_refcnts[22].base, .data.refcounted = {g_bytes + 174, 19}},
+    {.refcount = &g_refcnts[23].base, .data.refcounted = {g_bytes + 193, 16}},
+    {.refcount = &g_refcnts[24].base, .data.refcounted = {g_bytes + 209, 16}},
+    {.refcount = &g_refcnts[25].base, .data.refcounted = {g_bytes + 225, 14}},
+    {.refcount = &g_refcnts[26].base, .data.refcounted = {g_bytes + 239, 16}},
+    {.refcount = &g_refcnts[27].base, .data.refcounted = {g_bytes + 255, 13}},
+    {.refcount = &g_refcnts[28].base, .data.refcounted = {g_bytes + 268, 12}},
+    {.refcount = &g_refcnts[29].base, .data.refcounted = {g_bytes + 280, 6}},
+    {.refcount = &g_refcnts[30].base, .data.refcounted = {g_bytes + 286, 4}},
+    {.refcount = &g_refcnts[31].base, .data.refcounted = {g_bytes + 290, 7}},
+    {.refcount = &g_refcnts[32].base, .data.refcounted = {g_bytes + 297, 12}},
+    {.refcount = &g_refcnts[33].base, .data.refcounted = {g_bytes + 309, 0}},
+    {.refcount = &g_refcnts[34].base, .data.refcounted = {g_bytes + 309, 4}},
+    {.refcount = &g_refcnts[35].base, .data.refcounted = {g_bytes + 313, 6}},
+    {.refcount = &g_refcnts[36].base, .data.refcounted = {g_bytes + 319, 7}},
+    {.refcount = &g_refcnts[37].base, .data.refcounted = {g_bytes + 326, 4}},
+    {.refcount = &g_refcnts[38].base, .data.refcounted = {g_bytes + 330, 3}},
+    {.refcount = &g_refcnts[39].base, .data.refcounted = {g_bytes + 333, 4}},
+    {.refcount = &g_refcnts[40].base, .data.refcounted = {g_bytes + 337, 20}},
+    {.refcount = &g_refcnts[41].base, .data.refcounted = {g_bytes + 357, 30}},
+    {.refcount = &g_refcnts[42].base, .data.refcounted = {g_bytes + 387, 31}},
+    {.refcount = &g_refcnts[43].base, .data.refcounted = {g_bytes + 418, 12}},
+    {.refcount = &g_refcnts[44].base, .data.refcounted = {g_bytes + 430, 19}},
+    {.refcount = &g_refcnts[45].base, .data.refcounted = {g_bytes + 449, 13}},
+    {.refcount = &g_refcnts[46].base, .data.refcounted = {g_bytes + 462, 30}},
+    {.refcount = &g_refcnts[47].base, .data.refcounted = {g_bytes + 492, 12}},
+    {.refcount = &g_refcnts[48].base, .data.refcounted = {g_bytes + 504, 16}},
+    {.refcount = &g_refcnts[49].base, .data.refcounted = {g_bytes + 520, 14}},
+    {.refcount = &g_refcnts[50].base, .data.refcounted = {g_bytes + 534, 11}},
+    {.refcount = &g_refcnts[51].base, .data.refcounted = {g_bytes + 545, 12}},
+    {.refcount = &g_refcnts[52].base, .data.refcounted = {g_bytes + 557, 16}},
+    {.refcount = &g_refcnts[53].base, .data.refcounted = {g_bytes + 573, 4}},
+    {.refcount = &g_refcnts[54].base, .data.refcounted = {g_bytes + 577, 13}},
+    {.refcount = &g_refcnts[55].base, .data.refcounted = {g_bytes + 590, 4}},
+    {.refcount = &g_refcnts[56].base, .data.refcounted = {g_bytes + 594, 4}},
+    {.refcount = &g_refcnts[57].base, .data.refcounted = {g_bytes + 598, 5}},
+    {.refcount = &g_refcnts[58].base, .data.refcounted = {g_bytes + 603, 8}},
+    {.refcount = &g_refcnts[59].base, .data.refcounted = {g_bytes + 611, 16}},
+    {.refcount = &g_refcnts[60].base, .data.refcounted = {g_bytes + 627, 21}},
+    {.refcount = &g_refcnts[61].base, .data.refcounted = {g_bytes + 648, 13}},
+    {.refcount = &g_refcnts[62].base, .data.refcounted = {g_bytes + 661, 8}},
+    {.refcount = &g_refcnts[63].base, .data.refcounted = {g_bytes + 669, 17}},
+    {.refcount = &g_refcnts[64].base, .data.refcounted = {g_bytes + 686, 13}},
+    {.refcount = &g_refcnts[65].base, .data.refcounted = {g_bytes + 699, 8}},
+    {.refcount = &g_refcnts[66].base, .data.refcounted = {g_bytes + 707, 19}},
+    {.refcount = &g_refcnts[67].base, .data.refcounted = {g_bytes + 726, 13}},
+    {.refcount = &g_refcnts[68].base, .data.refcounted = {g_bytes + 739, 11}},
+    {.refcount = &g_refcnts[69].base, .data.refcounted = {g_bytes + 750, 8}},
+    {.refcount = &g_refcnts[70].base, .data.refcounted = {g_bytes + 758, 4}},
+    {.refcount = &g_refcnts[71].base, .data.refcounted = {g_bytes + 762, 8}},
+    {.refcount = &g_refcnts[72].base, .data.refcounted = {g_bytes + 770, 12}},
+    {.refcount = &g_refcnts[73].base, .data.refcounted = {g_bytes + 782, 7}},
+    {.refcount = &g_refcnts[74].base, .data.refcounted = {g_bytes + 789, 5}},
+    {.refcount = &g_refcnts[75].base, .data.refcounted = {g_bytes + 794, 4}},
+    {.refcount = &g_refcnts[76].base, .data.refcounted = {g_bytes + 798, 18}},
+    {.refcount = &g_refcnts[77].base, .data.refcounted = {g_bytes + 816, 19}},
+    {.refcount = &g_refcnts[78].base, .data.refcounted = {g_bytes + 835, 3}},
+    {.refcount = &g_refcnts[79].base, .data.refcounted = {g_bytes + 838, 5}},
+    {.refcount = &g_refcnts[80].base, .data.refcounted = {g_bytes + 843, 7}},
+    {.refcount = &g_refcnts[81].base, .data.refcounted = {g_bytes + 850, 7}},
+    {.refcount = &g_refcnts[82].base, .data.refcounted = {g_bytes + 857, 11}},
+    {.refcount = &g_refcnts[83].base, .data.refcounted = {g_bytes + 868, 7}},
+    {.refcount = &g_refcnts[84].base, .data.refcounted = {g_bytes + 875, 6}},
+    {.refcount = &g_refcnts[85].base, .data.refcounted = {g_bytes + 881, 10}},
+    {.refcount = &g_refcnts[86].base, .data.refcounted = {g_bytes + 891, 1}},
+    {.refcount = &g_refcnts[87].base, .data.refcounted = {g_bytes + 892, 36}},
+    {.refcount = &g_refcnts[88].base, .data.refcounted = {g_bytes + 928, 11}},
+    {.refcount = &g_refcnts[89].base, .data.refcounted = {g_bytes + 939, 7}},
+    {.refcount = &g_refcnts[90].base, .data.refcounted = {g_bytes + 946, 25}},
+    {.refcount = &g_refcnts[91].base, .data.refcounted = {g_bytes + 971, 2}},
+    {.refcount = &g_refcnts[92].base, .data.refcounted = {g_bytes + 973, 8}},
+    {.refcount = &g_refcnts[93].base, .data.refcounted = {g_bytes + 981, 17}},
+    {.refcount = &g_refcnts[94].base, .data.refcounted = {g_bytes + 998, 10}},
+    {.refcount = &g_refcnts[95].base, .data.refcounted = {g_bytes + 1008, 4}},
+    {.refcount = &g_refcnts[96].base, .data.refcounted = {g_bytes + 1012, 3}},
+    {.refcount = &g_refcnts[97].base, .data.refcounted = {g_bytes + 1015, 16}},
 };
 
-static const uint8_t g_revmap[] = {
-    0,   1,   2,   3,   255, 255, 4,   255, 255, 5,   255, 255, 6,   255, 255,
-    7,   255, 255, 8,   255, 255, 9,   255, 255, 10,  255, 255, 255, 255, 255,
-    11,  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 12,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 13,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 14,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 15,  255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 16,  255, 255, 17,  255, 255,
-    255, 255, 18,  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 19,  255, 255, 255, 255, 255, 255, 255, 255, 255, 20,  255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 21,  255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 22,  255, 255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 23,  255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 24,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-    25,  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 26,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-    27,  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 28,  255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 29,  255, 255, 255, 255,
-    255, 30,  255, 255, 255, 31,  255, 255, 255, 255, 255, 255, 32,  255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 34,  255, 255, 255, 35,  255,
-    255, 255, 255, 255, 36,  255, 255, 255, 255, 255, 255, 37,  255, 255, 255,
-    38,  255, 255, 39,  255, 255, 255, 40,  255, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 41,  255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 42,  255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 43,  255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 44,  255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 45,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 46,  255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 47,  255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 48,  255, 255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 49,  255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 50,  255, 255, 255, 255, 255,
-    255, 255, 255, 255, 255, 51,  255, 255, 255, 255, 255, 255, 255, 255, 255,
-    255, 255, 52,  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 53,  255, 255, 255, 54,  255, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 255, 255, 55,  255, 255, 255, 56,  255, 255, 255, 57,  255,
-    255, 255, 255, 58,  255, 255, 255, 255, 255, 255, 255, 59,  255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 60,  255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 61,  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-    255, 62,  255, 255, 255, 255, 255, 255, 255, 63,  255, 255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 64,  255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 65,  255, 255, 255, 255, 255,
-    255, 255, 66,  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 67,  255, 255, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 255, 68,  255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-    69,  255, 255, 255, 255, 255, 255, 255, 70,  255, 255, 255, 71,  255, 255,
-    255, 255, 255, 255, 255, 72,  255, 255, 255, 255, 255, 255, 255, 255, 255,
-    255, 255, 73,  255, 255, 255, 255, 255, 255, 74,  255, 255, 255, 255, 75,
-    255, 255, 255, 76,  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 77,  255, 255, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 78,  255, 255, 79,  255,
-    255, 255, 255, 80,  255, 255, 255, 255, 255, 255, 81,  255, 255, 255, 255,
-    255, 255, 82,  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 83,  255,
-    255, 255, 255, 255, 255, 84,  255, 255, 255, 255, 255, 85,  255, 255, 255,
-    255, 255, 255, 255, 255, 255, 86,  87,  255, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 88,  255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 89,  255, 255, 255, 255, 255,
-    255, 90,  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 91,  255, 92,  255,
-    255, 255, 255, 255, 255, 255, 93,  255, 255, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 94,  255, 255, 255, 255, 255, 255,
-    255, 255, 255, 95,  255, 255, 255, 96,  255, 255, 97,  255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255};
-
 int grpc_static_metadata_index(grpc_slice slice) {
-  if (GRPC_SLICE_LENGTH(slice) == 0) return 33;
-  if (slice.refcount != &g_refcnt) return -1;
-  size_t ofs = (size_t)(slice.data.refcounted.bytes - g_raw_bytes);
-  if (ofs > sizeof(g_revmap)) return -1;
-  uint8_t id = g_revmap[ofs];
-  return id == 255 ? -1 : (grpc_static_slice_table[id].data.refcounted.length ==
-                                   slice.data.refcounted.length
-                               ? id
-                               : -1);
+  static_slice_refcount *r = (static_slice_refcount *)slice.refcount;
+  if (slice.data.refcounted.bytes == g_bytes + r->offset &&
+      slice.data.refcounted.length == r->length)
+    return (int)(r - g_refcnts);
+  return -1;
 }
 
 uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT] = {
@@ -465,330 +347,168 @@ grpc_mdelem grpc_static_mdelem_for_static_strings(int a, int b) {
 }
 
 grpc_mdelem_data grpc_static_mdelem_table[GRPC_STATIC_MDELEM_COUNT] = {
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 30, .length = 14}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 24, .length = 6}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 44, .length = 15}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 44, .length = 15}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 577, .length = 13}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 59, .length = 15}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 74, .length = 13}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 87, .length = 27}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 114, .length = 3}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 117, .length = 5}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 138, .length = 10}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 148, .length = 13}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 161, .length = 13}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 174, .length = 19}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 193, .length = 16}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 209, .length = 16}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 225, .length = 14}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 239, .length = 16}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 255, .length = 13}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 268, .length = 12}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 122, .length = 16}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 268, .length = 12}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 280, .length = 6}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 286, .length = 4}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 4}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 313, .length = 6}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 319, .length = 7}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 326, .length = 4}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 337, .length = 20}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 290, .length = 7}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 337, .length = 20}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 297, .length = 12}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 337, .length = 20}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 573, .length = 4}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 337, .length = 20}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 603, .length = 8}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 337, .length = 20}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 611, .length = 16}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 337, .length = 20}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 627, .length = 21}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 337, .length = 20}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 648, .length = 13}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 449, .length = 13}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 290, .length = 7}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 449, .length = 13}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 573, .length = 4}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 449, .length = 13}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 603, .length = 8}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 534, .length = 11}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 0, .length = 1}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 534, .length = 11}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 1, .length = 1}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 534, .length = 11}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 2, .length = 1}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 590, .length = 4}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 661, .length = 8}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 669, .length = 17}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 686, .length = 13}},
-     {.refcount = &g_refcnt,
-      .data.refcounted = {.bytes = g_raw_bytes + 309, .length = 0}}},
-    {{.refcount = &g_refcnt,
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+    {{.refcount = &g_refcnts[89].base, .data.refcounted = {g_bytes + 939, 7}},
+     {.refcount = &g_refcnts[3].base, .data.refcounted = {g_bytes + 3, 3}}},
+    {{.refcount = &g_refcnts[89].base, .data.refcounted = {g_bytes + 939, 7}},
+     {.refcount = &g_refcnts[4].base, .data.refcounted = {g_bytes + 6, 3}}},
+    {{.refcount = &g_refcnts[89].base, .data.refcounted = {g_bytes + 939, 7}},
+     {.refcount = &g_refcnts[5].base, .data.refcounted = {g_bytes + 9, 3}}},
+    {{.refcount = &g_refcnts[89].base, .data.refcounted = {g_bytes + 939, 7}},
+     {.refcount = &g_refcnts[6].base, .data.refcounted = {g_bytes + 12, 3}}},
+    {{.refcount = &g_refcnts[89].base, .data.refcounted = {g_bytes + 939, 7}},
+     {.refcount = &g_refcnts[7].base, .data.refcounted = {g_bytes + 15, 3}}},
+    {{.refcount = &g_refcnts[89].base, .data.refcounted = {g_bytes + 939, 7}},
+     {.refcount = &g_refcnts[8].base, .data.refcounted = {g_bytes + 18, 3}}},
+    {{.refcount = &g_refcnts[89].base, .data.refcounted = {g_bytes + 939, 7}},
+     {.refcount = &g_refcnts[9].base, .data.refcounted = {g_bytes + 21, 3}}},
+    {{.refcount = &g_refcnts[90].base, .data.refcounted = {g_bytes + 946, 25}},
+     {.refcount = &g_refcnts[33].base, .data.refcounted = {g_bytes + 309, 0}}},
+    {{.refcount = &g_refcnts[91].base, .data.refcounted = {g_bytes + 971, 2}},
+     {.refcount = &g_refcnts[92].base, .data.refcounted = {g_bytes + 973, 8}}},
+    {{.refcount = &g_refcnts[93].base, .data.refcounted = {g_bytes + 981, 17}},
+     {.refcount = &g_refcnts[33].base, .data.refcounted = {g_bytes + 309, 0}}},
+    {{.refcount = &g_refcnts[94].base, .data.refcounted = {g_bytes + 998, 10}},
+     {.refcount = &g_refcnts[33].base, .data.refcounted = {g_bytes + 309, 0}}},
+    {{.refcount = &g_refcnts[95].base, .data.refcounted = {g_bytes + 1008, 4}},
+     {.refcount = &g_refcnts[33].base, .data.refcounted = {g_bytes + 309, 0}}},
+    {{.refcount = &g_refcnts[96].base, .data.refcounted = {g_bytes + 1012, 3}},
+     {.refcount = &g_refcnts[33].base, .data.refcounted = {g_bytes + 309, 0}}},
+    {{.refcount = &g_refcnts[97].base, .data.refcounted = {g_bytes + 1015, 16}},
+     {.refcount = &g_refcnts[33].base, .data.refcounted = {g_bytes + 309, 0}}},
 };
 const uint8_t grpc_static_accept_encoding_metadata[8] = {0,  29, 26, 30,
                                                          28, 32, 27, 31};

tools/codegen/core/gen_static_metadata.py

@@ -300,6 +300,14 @@ print >>C
 print >>C, '#include "src/core/lib/slice/slice_internal.h"'
 print >>C
 
+str_ofs = 0
+id2strofs = {}
+for i, elem in enumerate(all_strs):
+  id2strofs[i] = str_ofs
+  str_ofs += len(elem);
+def slice_def(i):
+  return '{.refcount = &g_refcnts[%d].base, .data.refcounted = {g_bytes+%d, %d}}' % (i, id2strofs[i], len(all_strs[i]))
+
 print >>H, '#define GRPC_STATIC_MDSTR_COUNT %d' % len(all_strs)
 print >>H, 'extern const grpc_slice grpc_static_slice_table[GRPC_STATIC_MDSTR_COUNT];'
 for i, elem in enumerate(all_strs):
@@ -308,42 +316,31 @@ for i, elem in enumerate(all_strs):
 print >>H
 print >>H, 'bool grpc_is_static_metadata_string(grpc_slice slice);'
 print >>H
-print >>C, 'static uint8_t g_raw_bytes[] = {%s};' % (','.join('%d' % ord(c) for c in ''.join(all_strs)))
+print >>C, 'static uint8_t g_bytes[] = {%s};' % (','.join('%d' % ord(c) for c in ''.join(all_strs)))
 print >>C
 print >>C, 'static void static_ref(void *unused) {}'
 print >>C, 'static void static_unref(grpc_exec_ctx *exec_ctx, void *unused) {}'
 print >>C, 'static const grpc_slice_refcount_vtable static_vtable = {static_ref, static_unref, grpc_static_slice_eq, grpc_static_slice_hash};';
-print >>C, 'static grpc_slice_refcount g_refcnt = {&static_vtable};'
+print >>C, 'typedef struct { grpc_slice_refcount base; const uint16_t offset; const uint16_t length; } static_slice_refcount;'
+print >>C, 'static static_slice_refcount g_refcnts[GRPC_STATIC_MDSTR_COUNT] = {'
+for i, elem in enumerate(all_strs):
+  print >>C, '  {{&static_vtable}, %d, %d},' % (id2strofs[i], len(elem))
+print >>C, '};'
 print >>C
 print >>C, 'bool grpc_is_static_metadata_string(grpc_slice slice) {'
 print >>C, '  return slice.refcount != NULL && slice.refcount->vtable == &static_vtable;'
 print >>C, '}'
 print >>C
 print >>C, 'const grpc_slice grpc_static_slice_table[GRPC_STATIC_MDSTR_COUNT] = {'
-str_ofs = 0
-revmap = {}
-zero_length_idx = None
-id2strofs = {}
-def slice_def(i):
-  return '{.refcount = &g_refcnt, .data.refcounted = {.bytes = g_raw_bytes+%d, .length=%d}}' % (id2strofs[i], len(all_strs[i]))
 for i, elem in enumerate(all_strs):
-  id2strofs[i] = str_ofs
   print >>C, slice_def(i) + ','
-  revmap[str_ofs] = i
-  if len(elem) == 0: zero_length_idx = i
-  str_ofs += len(elem);
 print >>C, '};'
 print >>C
-print >>C, 'static const uint8_t g_revmap[] = {%s};' % ','.join('%d' % (revmap[i] if i in revmap else 255) for i in range(0, str_ofs))
-print >>C
 print >>H, 'int grpc_static_metadata_index(grpc_slice slice);'
 print >>C, 'int grpc_static_metadata_index(grpc_slice slice) {'
-print >>C, '  if (GRPC_SLICE_LENGTH(slice) == 0) return %d;' % zero_length_idx
-print >>C, '  if (slice.refcount != &g_refcnt) return -1;'
-print >>C, '  size_t ofs = (size_t)(slice.data.refcounted.bytes - g_raw_bytes);'
-print >>C, '  if (ofs > sizeof(g_revmap)) return -1;'
-print >>C, '  uint8_t id = g_revmap[ofs];'
-print >>C, '  return id == 255 ? -1 : (grpc_static_slice_table[id].data.refcounted.length == slice.data.refcounted.length? id : -1);'
+print >>C, '  static_slice_refcount *r = (static_slice_refcount *)slice.refcount;'
+print >>C, '  if (slice.data.refcounted.bytes == g_bytes + r->offset && slice.data.refcounted.length == r->length) return (int)(r - g_refcnts);'
+print >>C, '  return -1;'
 print >>C, '}'
 print >>C