[wasm] Call a runtime function for a MemorySize instruction.

test/mjsunit/regress/wasm/regression-651961.js

+// Copyright 2016 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.
+
+// Flags: --expose-wasm
+
+load("test/mjsunit/wasm/wasm-constants.js");
+load("test/mjsunit/wasm/wasm-module-builder.js");
+
+(function() {
+  var builder = new WasmModuleBuilder();
+  builder.addMemory(1, 1, false);
+  builder.addFunction("foo", kSig_i_v)
+    .addBody([
+              kExprMemorySize,
+              kExprI32Const, 0x10,
+              kExprGrowMemory,
+              kExprI32Mul,
+              ])
+              .exportFunc();
+  var module = builder.instantiate();
+  var result = module.exports.foo();
+  assertEquals(1, result);
+})();