[wasm] Implement parallel compilation.

test/mjsunit/wasm/parallel_compilation.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 --wasm-num-compilation-tasks=10
+
+load("test/mjsunit/wasm/wasm-constants.js");
+load("test/mjsunit/wasm/wasm-module-builder.js");
+
+function assertModule(module, memsize) {
+  // Check the module exists.
+  assertFalse(module === undefined);
+  assertFalse(module === null);
+  assertFalse(module === 0);
+  assertEquals("object", typeof module);
+
+  // Check the memory is an ArrayBuffer.
+  var mem = module.exports.memory;
+  assertFalse(mem === undefined);
+  assertFalse(mem === null);
+  assertFalse(mem === 0);
+  assertEquals("object", typeof mem);
+  assertTrue(mem instanceof ArrayBuffer);
+  for (var i = 0; i < 4; i++) {
+    module.exports.memory = 0;  // should be ignored
+    assertEquals(mem, module.exports.memory);
+  }
+
+  assertEquals(memsize, module.exports.memory.byteLength);
+}
+
+function assertFunction(module, func) {
+  assertEquals("object", typeof module.exports);
+
+  var exp = module.exports[func];
+  assertFalse(exp === undefined);
+  assertFalse(exp === null);
+  assertFalse(exp === 0);
+  assertEquals("function", typeof exp);
+  return exp;
+}
+
+(function CompileFunctionsTest() {
+
+  var builder = new WasmModuleBuilder();
+
+  builder.addMemory(1, 1, true);
+  for (i = 0; i < 1000; i++) {
+    builder.addFunction("sub" + i, kSig_i_i)
+      .addBody([                // --
+        kExprGetLocal, 0,       // --
+        kExprI32Const, i % 61,  // --
+        kExprI32Sub])           // --
+      .exportFunc()
+  }
+
+  var module = builder.instantiate();
+  assertModule(module, kPageSize);
+
+  // Check the properties of the functions.
+  for (i = 0; i < 1000; i++) {
+    var sub = assertFunction(module, "sub" + i);
+    assertEquals(33 - (i % 61), sub(33));
+  }
+})();
+
+(function CallFunctionsTest() {
+
+  var builder = new WasmModuleBuilder();
+
+  var f = []
+
+  f[0] = builder.addFunction("add0", kSig_i_ii)
+  .addBody([
+            kExprGetLocal, 0,             // --
+            kExprGetLocal, 1,             // --
+            kExprI32Add,                  // --
+          ])
+          .exportFunc()
+
+  builder.addMemory(1, 1, true);
+  for (i = 1; i < 256; i++) {
+    f[i] = builder.addFunction("add" + i, kSig_i_ii)
+      .addBody([                                            // --
+        kExprGetLocal, 0,                                   // --
+        kExprGetLocal, 1,                                   // --
+        kExprCallFunction, kArity2, f[i >>> 1].index])      // --
+      .exportFunc()
+  }
+  var module = builder.instantiate();
+  assertModule(module, kPageSize);
+
+  // Check the properties of the functions.
+  for (i = 0; i < 256; i++) {
+    var add = assertFunction(module, "add" + i);
+    assertEquals(88, add(33, 55));
+    assertEquals(88888, add(33333, 55555));
+    assertEquals(8888888, add(3333333, 5555555));
+  }
+})();