--- dyld/dyld-1284.13/cache_builder/Chunk.cpp
+++ dyld/dyld-1235.2/cache_builder/Chunk.cpp
@@ -68,9 +68,6 @@
             // FIXME: Not sure why this is 16.  Seems like 8 would be sufficient.
             nlist       = 16,
 
-            // This chunk points to data which contains a uint128_t or similar, so needs 128-bit alignment
-            struct128   = 16,
-
             // Inside the cache there is minimal overhead for 16K alignment even on 4K hardware
             page        = 16*1024,
         };
@@ -635,37 +632,12 @@
     return "cache patch table";
 }
 
-
-//
-// MARK: --- FunctionVariantsPatchTableChunk methods ---
-//
-
-FunctionVariantsPatchTableChunk::FunctionVariantsPatchTableChunk()
-: Chunk(Kind::cacheFunctionVariantsPatchTable, Alignment::struct64)
-{
-}
-
-FunctionVariantsPatchTableChunk::~FunctionVariantsPatchTableChunk()
-{
-}
-
-void FunctionVariantsPatchTableChunk::dump() const
-{
-    printf("FunctionVariantsPatchTableChunk\n");
-}
-
-const char* FunctionVariantsPatchTableChunk::name() const
-{
-    return "function variants table";
-}
-
-
 //
 // MARK: --- PrebuiltLoaderChunk methods ---
 //
 
 PrebuiltLoaderChunk::PrebuiltLoaderChunk(Kind kind)
-    : Chunk(kind, Alignment::struct128)
+    : Chunk(kind, Alignment::struct64)
 {
 }
 
@@ -780,10 +752,7 @@
             chunkName = "linkedit function starts";
             break;
         case Chunk::Kind::linkeditDataInCode:
-            chunkName = "linkedit data-in-code";
-            break;
-        case Chunk::Kind::linkeditFunctionVariants  :
-            chunkName = "linkedit function-variants-table";
+            chunkName = "linkedit Mr Data (in code)";
             break;
         case Chunk::Kind::linkeditExportTrie:
             chunkName = "linkedit export trie";
@@ -815,12 +784,6 @@
     return this->kind == Chunk::Kind::linkeditSymbolStrings;
 }
 
-bool LinkeditDataChunk::isFunctionVariantsTable() const
-{
-    return this->kind == Chunk::Kind::linkeditFunctionVariants;
-}
-
-
 //
 // MARK: --- NListChunk methods ---
 //
@@ -988,27 +951,3 @@
 const AlignChunk* AlignChunk::isAlignChunk() const {
     return this;
 }
-
-//
-// MARK: --- PrewarmingChunk methods ---
-//
-
-PrewarmingChunk::PrewarmingChunk(Kind kind)
-    : Chunk(kind, Alignment::uleb)
-{
-}
-
-PrewarmingChunk::~PrewarmingChunk()
-{
-
-}
-
-void PrewarmingChunk::dump() const
-{
-    printf("PrewarmingChunk\n");
-}
-
-const char* PrewarmingChunk::name() const
-{
-    return "prewarming data";
-}