[wasm] Increase WebAssembly.Memory maximum size to ~2GB

test/mjsunit/wasm/large-offset.js

+// Copyright 2017 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.
+
+load("test/mjsunit/wasm/wasm-constants.js");
+load("test/mjsunit/wasm/wasm-module-builder.js");
+
+function testGrowMemoryOutOfBoundsOffset() {
+  print("testGrowMemoryOutOfBoundsOffset2");
+  var builder = new WasmModuleBuilder();
+  builder.addMemory(16, 128, false);
+  builder.addFunction("main", kSig_v_v)
+      .addBody([
+          kExprI32Const, 20,
+          kExprI32Const, 29,
+          kExprGrowMemory, kMemoryZero,
+          kExprI32StoreMem, 0, 0xFF, 0xFF, 0xFF, 0x7a

[Eric Holk, 2017/06/13 16:19:48]

Ah, here's the way out of bounds test! Thanks.

Could you add a comment with what 0xFF, 0xFF, 0xFF, 0x7a decodes to?

[gdeepti, 2017/06/13 21:25:43]

Done.

+          ])
+      .exportAs("main");
+  var module = builder.instantiate();
+  assertTraps(kTrapMemOutOfBounds, module.exports.main);
+}
+
+testGrowMemoryOutOfBoundsOffset();