[wasm] Allocate a single script per wasm module

src/wasm/wasm-objects.h

Index: src/wasm/wasm-objects.h
diff --git a/src/wasm/wasm-objects.h b/src/wasm/wasm-objects.h
index d91bcc4fa075f68f23c1a37108b80f68f24165c5..f74661f6520e0069a7a662bfda7556e895af7e08 100644
--- a/src/wasm/wasm-objects.h
+++ b/src/wasm/wasm-objects.h
@@ -189,11 +189,13 @@ class WasmCompiledModule : public FixedArray {
 #define CORE_WCM_PROPERTY_TABLE(MACRO)                \
   MACRO(OBJECT, FixedArray, code_table)               \
   MACRO(OBJECT, Foreign, module_wrapper)              \
+  /* For debugging: */                                \
   MACRO(OBJECT, SeqOneByteString, module_bytes)       \
-  MACRO(OBJECT, Script, asm_js_script)                \
+  MACRO(OBJECT, Script, script)                       \
+  MACRO(OBJECT, ByteArray, asm_js_offset_tables)      \
+  /* End of debugging stuff */                        \
   MACRO(OBJECT, FixedArray, function_tables)          \
   MACRO(OBJECT, FixedArray, empty_function_tables)    \
-  MACRO(OBJECT, ByteArray, asm_js_offset_tables)      \
   MACRO(OBJECT, JSArrayBuffer, memory)                \
   MACRO(SMALL_NUMBER, uint32_t, min_mem_pages)        \
   MACRO(SMALL_NUMBER, uint32_t, max_mem_pages)        \
@@ -251,6 +253,12 @@ class WasmCompiledModule : public FixedArray {
   static void RecreateModuleWrapper(Isolate* isolate,
                                     Handle<FixedArray> compiled_module);
 
+  // Extract a function name from the given wasm instance.
+  // Returns a null handle if the function is unnamed or the name is not a valid
+  // UTF-8 string.
+  static MaybeHandle<String> GetFunctionName(
+      Handle<WasmCompiledModule> compiled_module, uint32_t func_index);
+
  private:
   void InitId();