[wasm] Allocate a single script per wasm module

src/objects-inl.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 5897 matching lines @@
 SMI_ACCESSORS(Script, type, kTypeOffset)
 ACCESSORS(Script, line_ends, Object, kLineEndsOffset)
 ACCESSORS_CHECKED(Script, eval_from_shared, Object, kEvalFromSharedOffset,
                   this->type() != TYPE_WASM)
 SMI_ACCESSORS_CHECKED(Script, eval_from_position, kEvalFromPositionOffset,
                       this->type() != TYPE_WASM)
 ACCESSORS(Script, shared_function_infos, Object, kSharedFunctionInfosOffset)
 SMI_ACCESSORS(Script, flags, kFlagsOffset)
 ACCESSORS(Script, source_url, Object, kSourceUrlOffset)
 ACCESSORS(Script, source_mapping_url, Object, kSourceMappingUrlOffset)
-ACCESSORS_CHECKED(Script, wasm_instance, JSObject, kEvalFromSharedOffset,
+ACCESSORS_CHECKED(Script, wasm_compiled_module, Object, kEvalFromSharedOffset,
                   this->type() == TYPE_WASM)
-SMI_ACCESSORS_CHECKED(Script, wasm_function_index, kEvalFromPositionOffset,
-                      this->type() == TYPE_WASM)
 
 Script::CompilationType Script::compilation_type() {
   return BooleanBit::get(flags(), kCompilationTypeBit) ?
       COMPILATION_TYPE_EVAL : COMPILATION_TYPE_HOST;
 }
 void Script::set_compilation_type(CompilationType type) {
   set_flags(BooleanBit::set(flags(), kCompilationTypeBit,
       type == COMPILATION_TYPE_EVAL));
 }
 bool Script::hide_source() { return BooleanBit::get(flags(), kHideSourceBit); }
@@ skipping 2488 matching lines @@
 #undef WRITE_INT64_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_OBJECTS_INL_H_