New growth strategy for growable arrays

runtime/vm/precompiler.cc

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/precompiler.h"
 
 #include "vm/aot_optimizer.h"
 #include "vm/assembler.h"
 #include "vm/ast_printer.h"
 #include "vm/branch_optimizer.h"
@@ skipping 1754 matching lines @@
         } else {
           dropped_function_count_++;
           if (FLAG_trace_precompiler) {
             THR_Print("Dropping function %s\n",
                       function.ToLibNamePrefixedQualifiedCString());
           }
         }
       }
 
       if (retained_functions.Length() > 0) {
-        functions = Array::MakeArray(retained_functions);
+        functions = Array::MakeFixedLength(retained_functions);
         cls.SetFunctions(functions);
       } else {
         cls.SetFunctions(Object::empty_array());
       }
     }
   }
 
   closures = isolate()->object_store()->closure_functions();
   retained_functions = GrowableObjectArray::New();
   for (intptr_t j = 0; j < closures.Length(); j++) {
@@ skipping 41 matching lines @@
           AddType(type);
         } else {
           dropped_field_count_++;
           if (FLAG_trace_precompiler) {
             THR_Print("Dropping field %s\n", field.ToCString());
           }
         }
       }
 
       if (retained_fields.Length() > 0) {
-        fields = Array::MakeArray(retained_fields);
+        fields = Array::MakeFixedLength(retained_fields);
         cls.SetFields(fields);
       } else {
         cls.SetFields(Object::empty_array());
       }
     }
   }
 }
 
 
 void Precompiler::DropTypes() {
@@ skipping 133 matching lines @@
       for (intptr_t j = 0; j < constants.Length(); j++) {
         constant ^= constants.At(j);
         bool retain = consts_to_retain_.HasKey(&constant);
         if (retain) {
           retained_constants.Add(constant);
         }
       }
       intptr_t cid = cls.id();
       if ((cid == kMintCid) || (cid == kBigintCid) || (cid == kDoubleCid)) {
         // Constants stored as a plain list, no rehashing needed.
-        constants = Array::MakeArray(retained_constants);
+        constants = Array::MakeFixedLength(retained_constants);
         cls.set_constants(constants);
       } else {
         // Rehash.
         cls.set_constants(Object::empty_array());
         for (intptr_t j = 0; j < retained_constants.Length(); j++) {
           constant ^= retained_constants.At(j);
           cls.InsertCanonicalConstant(Z, constant);
         }
       }
 
@@ skipping 1387 matching lines @@
 
   ASSERT(FLAG_precompiled_mode);
   const bool optimized = function.IsOptimizable();  // False for natives.
   DartPrecompilationPipeline pipeline(zone, field_type_map);
   return PrecompileFunctionHelper(precompiler, &pipeline, function, optimized);
 }
 
 #endif  // DART_PRECOMPILER
 
 }  // namespace dart