[wasm] Remove redundant SharedFunctionInfo allocation.

R=clemensh@chromium.org

Change-Id: Icc3882377c8e40411d556bf7165eed061f600f18
Reviewed-on: https://chromium-review.googlesource.com/965064Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#51995}

src/wasm/wasm-debug.cc

@@ -777,16 +777,13 @@ Handle<JSFunction> WasmDebugInfo::GetCWasmEntry(
     Handle<Code> new_entry_code = compiler::CompileCWasmEntry(isolate, sig);
     Handle<String> name = isolate->factory()->InternalizeOneByteString(
         STATIC_CHAR_VECTOR("c-wasm-entry"));
-    Handle<SharedFunctionInfo> shared =
-        isolate->factory()->NewSharedFunctionInfo(name, new_entry_code, false);
-    shared->set_internal_formal_parameter_count(
-        compiler::CWasmEntryParameters::kNumParameters);
     NewFunctionArgs args = NewFunctionArgs::ForWasm(
         name, new_entry_code, isolate->sloppy_function_map());
     Handle<JSFunction> new_entry = isolate->factory()->NewFunction(args);
     new_entry->set_context(
         debug_info->wasm_instance()->compiled_module()->native_context());
-    new_entry->set_shared(*shared);
+    new_entry->shared()->set_internal_formal_parameter_count(
+        compiler::CWasmEntryParameters::kNumParameters);
     entries->set(index, *new_entry);
   }
   return handle(JSFunction::cast(entries->get(index)));

src/wasm/wasm-objects.cc

@@ -808,18 +808,15 @@ Handle<WasmExportedFunction> WasmExportedFunction::New(
                    Vector<uint8_t>::cast(buffer.SubVector(0, length)))
                .ToHandleChecked();
   }
-  Handle<SharedFunctionInfo> shared =
-      isolate->factory()->NewSharedFunctionInfo(name, export_wrapper, false);
-  shared->set_length(arity);
-  shared->set_internal_formal_parameter_count(arity);
   NewFunctionArgs args = NewFunctionArgs::ForWasm(
       name, export_wrapper, isolate->sloppy_function_without_prototype_map());
   Handle<JSFunction> js_function = isolate->factory()->NewFunction(args);
   // According to the spec, exported functions should not have a [[Construct]]
   // method.
   DCHECK(!js_function->IsConstructor());
+  js_function->shared()->set_length(arity);
+  js_function->shared()->set_internal_formal_parameter_count(arity);
 
-  js_function->set_shared(*shared);
   Handle<Symbol> instance_symbol(isolate->factory()->wasm_instance_symbol());
   JSObject::AddProperty(js_function, instance_symbol, instance, DONT_ENUM);