add extra node to the symbol ref for better insertion per

src/linker/lnk.c

@@ -1783,8 +1783,8 @@ lnk_link_inputs(TP_Context      *tp,
           local_persist LNK_Symbol *null_symbol = 0;
           if (null_symbol == 0) {
             null_symbol                   = push_array(inputer->arena, LNK_Symbol, 1);
-            null_symbol->refs        = push_array(inputer->arena, LNK_ObjSymbolRefNode, 1);
+            null_symbol->first_ref        = push_array(inputer->arena, LNK_ObjSymbolRefNode, 1);
-            null_symbol->refs->v.obj = &link->objs.first->data;
+            null_symbol->first_ref->v.obj = &link->objs.first->data;
           }
           LNK_LibMemberRef *member_refs = push_array(scratch.arena, LNK_LibMemberRef, lib->member_count);
           for EachIndex(member_idx, lib->member_count) {
@@ -1876,10 +1876,11 @@ lnk_link_inputs(TP_Context      *tp,
             LNK_Symbol *import_stub = lnk_symbol_table_search(symtab, str8_lit(LNK_IMPORT_STUB));
 
             // same import symbol must never be queued more than once, if it is, there is a bug in the link set logic
-            AssertAlways(member_ref->link_symbol->refs != import_stub->refs);
+            AssertAlways(member_ref->link_symbol->first_ref != import_stub->first_ref);
 
             // replace the import symbol with a stub, which is later replaced with the real import symbol once import obj is ready.
-            member_ref->link_symbol->refs = import_stub->refs;
+            member_ref->link_symbol->first_ref = import_stub->first_ref;
+            member_ref->link_symbol->last_ref = import_stub->last_ref;
 
             // push import member for import obj generation
             lnk_lib_member_ref_list_push_node(&link->imports, member_ref);

src/linker/lnk_symbol_table.c

@@ -10,7 +10,7 @@ lnk_make_symbol(Arena *arena, String8 name, LNK_Obj *obj, U32 symbol_idx)
 
   LNK_Symbol *symbol = push_array(arena, LNK_Symbol, 1);
   symbol->name       = name;
-  symbol->refs           = ref;
+  SLLQueuePush(symbol->first_ref, symbol->last_ref, ref);
 
   return symbol;
 }
@@ -351,9 +351,8 @@ lnk_on_symbol_replace(LNK_Symbol *dst, LNK_Symbol *src)
   }
 
   // merge symbol refs
-  LNK_ObjSymbolRefNode *src_last_ref;
+  src->last_ref->next = dst->first_ref;
-  for (src_last_ref = src->refs; src_last_ref->next != 0; src_last_ref = src_last_ref->next);
+  src->last_ref = dst->last_ref;
-  src_last_ref->next = dst->refs;
 
   // assert leader section is live
 #if BUILD_DEBUG
@@ -494,14 +493,14 @@ lnk_array_from_symbol_hash_trie_chunk_list(Arena *arena, LNK_SymbolHashTrieChunk
 internal LNK_ObjSymbolRef
 lnk_ref_from_symbol(LNK_Symbol *symbol)
 {
-  return symbol->refs->v;
+  return symbol->first_ref->v;
 }
 
 internal U64
 lnk_ref_count_from_symbol(LNK_Symbol *symbol)
 {
   U64 count = 0;
-  for (LNK_ObjSymbolRefNode *node = symbol->refs; node != 0; node = node->next, count += 1);
+  for (LNK_ObjSymbolRefNode *node = symbol->first_ref; node != 0; node = node->next, count += 1);
   return count;
 }
 
@@ -512,7 +511,7 @@ lnk_ref_from_symbol_many(Arena *arena, LNK_Symbol *symbol, U64 *count_out)
   U64                refs_count = lnk_ref_count_from_symbol(symbol);
   LNK_ObjSymbolRef **refs       = push_array(arena, LNK_ObjSymbolRef *, refs_count);
   U64                i          = 0;
-  for (LNK_ObjSymbolRefNode *node = symbol->refs; node != 0; node = node->next, i += 1) {
+  for (LNK_ObjSymbolRefNode *node = symbol->first_ref; node != 0; node = node->next, i += 1) {
     refs[i] = &node->v;
   }
   radsort(refs, refs_count, lnk_obj_symbol_ref_ptr_is_before);
@@ -785,7 +784,7 @@ THREAD_POOL_TASK_FUNC(lnk_replace_weak_with_default_symbol_task)
               symbol16->storage_class  = COFF_SymStorageClass_External;
             }
           } else {
-            symbol->refs->v = resolve;
+            symbol->first_ref->v = resolve;
           }
         }
       }

src/linker/lnk_symbol_table.h

@@ -20,7 +20,8 @@ typedef struct LNK_ObjSymbolRefNode
 typedef struct LNK_Symbol
 {
   String8               name;
-  LNK_ObjSymbolRefNode *refs;
+  LNK_ObjSymbolRefNode *first_ref;
+  LNK_ObjSymbolRefNode *last_ref;
 } LNK_Symbol;
 
 // --- Symbol Containers -------------------------------------------------------