1 files changed, 76 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/wasm/huge-memory.js b/deps/v8/test/mjsunit/wasm/huge-memory.js
new file mode 100644
index 0000000000..9719ad4a28
--- /dev/null
+++ b/deps/v8/test/mjsunit/wasm/huge-memory.js
@@ -0,0 +1,76 @@
+// 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.
+
+// Flags: --wasm-max-mem-pages=49152
+
+// This test makes sure things don't break once we support >2GB wasm memories.
+load("test/mjsunit/wasm/wasm-constants.js");
+load("test/mjsunit/wasm/wasm-module-builder.js");
+
+function testHugeMemory() {
+  var builder = new WasmModuleBuilder();
+
+  const num_pages = 49152;  // 3GB
+
+  builder.addMemory(num_pages, num_pages, true);
+  builder.addFunction("geti", kSig_i_ii)
+    .addBody([
+      kExprGetLocal, 0,
+      kExprGetLocal, 1,
+      kExprI32Mul,
+      kExprI32LoadMem, 0, 0,
+    ])
+    .exportFunc();
+
+  var module = builder.instantiate();
+  const geti = module.exports.geti;
+
+  print("In bounds");
+  assertEquals(0, geti(2500, 1 << 20));
+  print("Out of bounds");
+  assertTraps(kTrapMemOutOfBounds, () => geti(3500, 1 << 20));
+}
+testHugeMemory();
+
+function testHugeMemoryConstInBounds() {
+  var builder = new WasmModuleBuilder();
+
+  const num_pages = 49152;  // 3GB
+
+  builder.addMemory(num_pages, num_pages, true);
+  builder.addFunction("geti", kSig_i_v)
+    .addBody([
+      kExprI32Const, 0x80, 0x80, 0x80, 0x80, 0x7A, // 0xA0000000, 2.5GB
+      kExprI32LoadMem, 0, 0,
+    ])
+    .exportFunc();
+
+  var module = builder.instantiate();
+  const geti = module.exports.geti;
+
+  print("In bounds");
+  assertEquals(0, geti());
+}
+testHugeMemoryConstInBounds();
+
+function testHugeMemoryConstOutOfBounds() {
+  var builder = new WasmModuleBuilder();
+
+  const num_pages = 49152;  // 3GB
+
+  builder.addMemory(num_pages, num_pages, true);
+  builder.addFunction("geti", kSig_i_v)
+    .addBody([
+      kExprI32Const, 0x80, 0x80, 0x80, 0x80, 0x7E, // 0xE0000000, 3.5GB
+      kExprI32LoadMem, 0, 0,
+    ])
+    .exportFunc();
+
+  var module = builder.instantiate();
+  const geti = module.exports.geti;
+
+  print("Out of bounds");
+  assertTraps(kTrapMemOutOfBounds, geti);
+}
+testHugeMemoryConstOutOfBounds();