Revert of Remove SIMD.js from V8.

test/mjsunit/harmony/simd.js

+// Copyright 2015 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: --harmony-simd
+// Flags: --allow-natives-syntax --expose-natives-as natives --noalways-opt
+
+function lanesForType(typeName) {
+  // The lane count follows the first 'x' in the type name, which begins with
+  // 'float', 'int', or 'bool'.
+  return Number.parseInt(typeName.substr(typeName.indexOf('x') + 1));
+}
+
+
+// Creates an instance that has been zeroed, so it can be used for equality
+// testing.
+function createInstance(type) {
+  // Provide enough parameters for the longest type (currently 16). It's
+  // important that instances be consistent to better test that different SIMD
+  // types can't be compared and are never equal or the same in any sense.
+  return SIMD[type](0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15);
+}
+
+
+function isValidSimdString(string, value, type, lanes) {
+  var simdFn = SIMD[type],
+      parseFn =
+          type.indexOf('Float') === 0 ? Number.parseFloat : Number.parseInt,
+      indexOfOpenParen = string.indexOf('(');
+  // Check prefix (e.g. SIMD.Float32x4.)
+  if (string.substr(0, indexOfOpenParen) !== 'SIMD.' + type)
+    return false;
+  // Remove type name (e.g. SIMD.Float32x4) and open parenthesis.
+  string = string.substr(indexOfOpenParen + 1);
+  var laneStrings = string.split(',');
+  if (laneStrings.length !== lanes)
+    return false;
+  for (var i = 0; i < lanes; i++) {
+    var fromString = parseFn(laneStrings[i]),
+        fromValue = simdFn.extractLane(value, i);
+    if (Math.abs(fromString - fromValue) > Number.EPSILON)
+      return false;
+  }
+  return true;
+}
+
+
+var simdTypeNames = ['Float32x4', 'Int32x4', 'Uint32x4', 'Bool32x4',
+                                  'Int16x8', 'Uint16x8', 'Bool16x8',
+                                  'Int8x16', 'Uint8x16', 'Bool8x16'];
+
+var nonSimdValues = [347, 1.275, NaN, "string", null, undefined, {},
+                     function() {}];
+
+function checkTypeMatrix(type, fn) {
+  // Check against non-SIMD types.
+  nonSimdValues.forEach(fn);
+  // Check against SIMD values of a different type.
+  for (var i = 0; i < simdTypeNames.length; i++) {
+    var otherType = simdTypeNames[i];
+    if (type != otherType) fn(createInstance(otherType));
+  }
+}
+
+
+// Test different forms of constructor calls.
+function TestConstructor(type, lanes) {
+  var simdFn = SIMD[type];
+  var instance = createInstance(type);
+
+  assertFalse(Object === simdFn.prototype.constructor)
+  assertFalse(simdFn === Object.prototype.constructor)
+  assertSame(simdFn, simdFn.prototype.constructor)
+
+  assertSame(simdFn, instance.__proto__.constructor)
+  assertSame(simdFn, Object(instance).__proto__.constructor)
+  assertSame(simdFn.prototype, instance.__proto__)
+  assertSame(simdFn.prototype, Object(instance).__proto__)
+}
+
+
+function TestType(type, lanes) {
+  var simdFn = SIMD[type];
+  var instance = createInstance(type);
+  var typeofString = type.charAt(0).toLowerCase() + type.slice(1);
+
+  assertEquals(typeofString, typeof instance)
+  assertTrue(typeof instance === typeofString)
+  assertTrue(typeof Object(instance) === 'object')
+  assertEquals(null, %_ClassOf(instance))
+  assertEquals(type, %_ClassOf(Object(instance)))
+}
+
+
+function TestPrototype(type, lanes) {
+  var simdFn = SIMD[type];
+  var instance = createInstance(type);
+
+  assertSame(Object.prototype, simdFn.prototype.__proto__)
+  assertSame(simdFn.prototype, instance.__proto__)
+  assertSame(simdFn.prototype, Object(instance).__proto__)
+}
+
+
+function TestValueOf(type, lanes) {
+  var simdFn = SIMD[type];
+  var instance = createInstance(type);
+
+  assertTrue(instance === Object(instance).valueOf())
+  assertTrue(instance === instance.valueOf())
+  assertTrue(simdFn.prototype.valueOf.call(Object(instance)) === instance)
+  assertTrue(simdFn.prototype.valueOf.call(instance) === instance)
+}
+
+
+function TestGet(type, lanes) {
+  var simdFn = SIMD[type];
+  var instance = createInstance(type);
+
+  assertEquals(undefined, instance.a)
+  assertEquals(undefined, instance["a" + "b"])
+  assertEquals(undefined, instance["" + "1"])
+  assertEquals(undefined, instance[42])
+}
+
+
+function TestToBoolean(type, lanes) {
+  var simdFn = SIMD[type];
+  var instance = createInstance(type);
+
+  assertTrue(Boolean(Object(instance)))
+  assertFalse(!Object(instance))
+  assertTrue(Boolean(instance).valueOf())
+  assertFalse(!instance)
+  assertTrue(!!instance)
+  assertTrue(instance && true)
+  assertFalse(!instance && false)
+  assertTrue(!instance || true)
+  assertEquals(1, instance ? 1 : 2)
+  assertEquals(2, !instance ? 1 : 2)
+  if (!instance) assertUnreachable();
+  if (instance) {} else assertUnreachable();
+}
+
+
+function TestToString(type, lanes) {
+  var simdFn = SIMD[type];
+  var instance = createInstance(type);
+
+  assertEquals(instance.toString(), String(instance))
+  assertTrue(isValidSimdString(instance.toString(), instance, type, lanes))
+  assertTrue(
+      isValidSimdString(Object(instance).toString(), instance, type, lanes))
+  assertTrue(isValidSimdString(
+      simdFn.prototype.toString.call(instance), instance, type, lanes))
+}
+
+
+function TestToNumber(type, lanes) {
+  var simdFn = SIMD[type];
+  var instance = createInstance(type);
+
+  assertThrows(function() { Number(Object(instance)) }, TypeError)
+  assertThrows(function() { +Object(instance) }, TypeError)
+  assertThrows(function() { Number(instance) }, TypeError)
+  assertThrows(function() { instance + 0 }, TypeError)
+}
+
+
+function TestCoercions(type, lanes) {
+  var simdFn = SIMD[type];
+  var instance = createInstance(type);
+  // Test that setting a lane to value 'a' results in a lane with value 'b'.
+  function test(a, b) {
+    for (var i = 0; i < lanes; i++) {
+      var ainstance = simdFn.replaceLane(instance, i, a);
+      var lane_value = simdFn.extractLane(ainstance, i);
+      assertSame(b, lane_value);
+    }
+  }
+
+  switch (type) {
+    case 'Float32x4':
+      test(0, 0);
+      test(-0, -0);
+      test(NaN, NaN);
+      test(null, 0);
+      test(undefined, NaN);
+      test("5.25", 5.25);
+      test(Number.MAX_VALUE, Infinity);
+      test(-Number.MAX_VALUE, -Infinity);
+      test(Number.MIN_VALUE, 0);
+      break;
+    case 'Int32x4':
+      test(Infinity, 0);
+      test(-Infinity, 0);
+      test(NaN, 0);
+      test(0, 0);
+      test(-0, 0);
+      test(Number.MIN_VALUE, 0);
+      test(-Number.MIN_VALUE, 0);
+      test(0.1, 0);
+      test(-0.1, 0);
+      test(1, 1);
+      test(1.1, 1);
+      test(-1, -1);
+      test(-1.6, -1);
+      test(2147483647, 2147483647);
+      test(2147483648, -2147483648);
+      test(2147483649, -2147483647);
+      test(4294967295, -1);
+      test(4294967296, 0);
+      test(4294967297, 1);
+      break;
+    case 'Uint32x4':
+      test(Infinity, 0);
+      test(-Infinity, 0);
+      test(NaN, 0);
+      test(0, 0);
+      test(-0, 0);
+      test(Number.MIN_VALUE, 0);
+      test(-Number.MIN_VALUE, 0);
+      test(0.1, 0);
+      test(-0.1, 0);
+      test(1, 1);
+      test(1.1, 1);
+      test(-1, 4294967295);
+      test(-1.6, 4294967295);
+      test(4294967295, 4294967295);
+      test(4294967296, 0);
+      test(4294967297, 1);
+      break;
+    case 'Int16x8':
+      test(Infinity, 0);
+      test(-Infinity, 0);
+      test(NaN, 0);
+      test(0, 0);
+      test(-0, 0);
+      test(Number.MIN_VALUE, 0);
+      test(-Number.MIN_VALUE, 0);
+      test(0.1, 0);
+      test(-0.1, 0);
+      test(1, 1);
+      test(1.1, 1);
+      test(-1, -1);
+      test(-1.6, -1);
+      test(32767, 32767);
+      test(32768, -32768);
+      test(32769, -32767);
+      test(65535, -1);
+      test(65536, 0);
+      test(65537, 1);
+      break;
+    case 'Uint16x8':
+      test(Infinity, 0);
+      test(-Infinity, 0);
+      test(NaN, 0);
+      test(0, 0);
+      test(-0, 0);
+      test(Number.MIN_VALUE, 0);
+      test(-Number.MIN_VALUE, 0);
+      test(0.1, 0);
+      test(-0.1, 0);
+      test(1, 1);
+      test(1.1, 1);
+      test(-1, 65535);
+      test(-1.6, 65535);
+      test(65535, 65535);
+      test(65536, 0);
+      test(65537, 1);
+      break;
+    case 'Int8x16':
+      test(Infinity, 0);
+      test(-Infinity, 0);
+      test(NaN, 0);
+      test(0, 0);
+      test(-0, 0);
+      test(Number.MIN_VALUE, 0);
+      test(-Number.MIN_VALUE, 0);
+      test(0.1, 0);
+      test(-0.1, 0);
+      test(1, 1);
+      test(1.1, 1);
+      test(-1, -1);
+      test(-1.6, -1);
+      test(127, 127);
+      test(128, -128);
+      test(129, -127);
+      test(255, -1);
+      test(256, 0);
+      test(257, 1);
+      break;
+    case 'Uint8x16':
+      test(Infinity, 0);
+      test(-Infinity, 0);
+      test(NaN, 0);
+      test(0, 0);
+      test(-0, 0);
+      test(Number.MIN_VALUE, 0);
+      test(-Number.MIN_VALUE, 0);
+      test(0.1, 0);
+      test(-0.1, 0);
+      test(1, 1);
+      test(1.1, 1);
+      test(-1, 255);
+      test(-1.6, 255);
+      test(255, 255);
+      test(256, 0);
+      test(257, 1);
+      break;
+    case 'Bool32x4':
+    case 'Bool16x8':
+    case 'Bool8x16':
+      test(true, true);
+      test(false, false);
+      test(0, false);
+      test(1, true);
+      test(0.1, true);
+      test(NaN, false);
+      test(null, false);
+      test("", false);
+      test("false", true);
+      break;
+  }
+}
+
+
+function TestEquality(type, lanes) {
+  var simdFn = SIMD[type];
+  var instance = createInstance(type);
+
+  // Every SIMD value should equal itself, and non-strictly equal its wrapper.
+  assertSame(instance, instance)
+  assertEquals(instance, instance)
+  assertTrue(Object.is(instance, instance))
+  assertTrue(instance === instance)
+  assertTrue(instance == instance)
+  assertFalse(instance === Object(instance))
+  assertFalse(Object(instance) === instance)
+  assertTrue(instance == Object(instance))
+  assertTrue(Object(instance) == instance)
+  assertTrue(instance === instance.valueOf())
+  assertTrue(instance.valueOf() === instance)
+  assertTrue(instance == instance.valueOf())
+  assertTrue(instance.valueOf() == instance)
+  assertFalse(Object(instance) === Object(instance))
+  assertEquals(Object(instance).valueOf(), Object(instance).valueOf())
+
+  function notEqual(other) {
+    assertFalse(instance === other)
+    assertFalse(other === instance)
+    assertFalse(instance == other)
+    assertFalse(other == instance)
+  }
+
+  // SIMD values should not be equal to instances of different types.
+  checkTypeMatrix(type, function(other) {
+    assertFalse(instance === other)
+    assertFalse(other === instance)
+    assertFalse(instance == other)
+    assertFalse(other == instance)
+  });
+
+  // Test that f(a, b) is the same as f(SIMD(a), SIMD(b)) for equality and
+  // strict equality, at every lane.
+  function test(a, b) {
+    for (var i = 0; i < lanes; i++) {
+      var aval = simdFn.replaceLane(instance, i, a);
+      var bval = simdFn.replaceLane(instance, i, b);
+      assertSame(a == b, aval == bval);
+      assertSame(a === b, aval === bval);
+    }
+  }
+
+  switch (type) {
+    case 'Float32x4':
+      test(1, 2.5);
+      test(1, 1);
+      test(0, 0);
+      test(-0, +0);
+      test(+0, -0);
+      test(-0, -0);
+      test(0, NaN);
+      test(NaN, NaN);
+      break;
+    case 'Int32x4':
+    case 'Uint32x4':
+    case 'Int16x8':
+    case 'Uint16x8':
+    case 'Int8x16':
+    case 'Uint8x16':
+      test(1, 2);
+      test(1, 1);
+      test(1, -1);
+      break;
+    case 'Bool32x4':
+    case 'Bool16x8':
+    case 'Bool8x16':
+      test(true, false);
+      test(false, true);
+      break;
+  }
+}
+
+
+function TestSameValue(type, lanes) {
+  var simdFn = SIMD[type];
+  var instance = createInstance(type);
+  var sameValue = Object.is
+  var sameValueZero = function(x, y) { return %SameValueZero(x, y); }
+
+  // SIMD values should not be the same as instances of different types.
+  checkTypeMatrix(type, function(other) {
+    assertFalse(sameValue(instance, other));
+    assertFalse(sameValueZero(instance, other));
+  });
+
+  // Test that f(a, b) is the same as f(SIMD(a), SIMD(b)) for sameValue and
+  // sameValueZero, at every lane.
+  function test(a, b) {
+    for (var i = 0; i < lanes; i++) {
+      var aval = simdFn.replaceLane(instance, i, a);
+      var bval = simdFn.replaceLane(instance, i, b);
+      assertSame(sameValue(a, b), sameValue(aval, bval));
+      assertSame(sameValueZero(a, b), sameValueZero(aval, bval));
+    }
+  }
+
+  switch (type) {
+    case 'Float32x4':
+      test(1, 2.5);
+      test(1, 1);
+      test(0, 0);
+      test(-0, +0);
+      test(+0, -0);
+      test(-0, -0);
+      test(0, NaN);
+      test(NaN, NaN);
+      break;
+    case 'Int32x4':
+    case 'Uint32x4':
+    case 'Int16x8':
+    case 'Uint16x8':
+    case 'Int8x16':
+    case 'Uint8x16':
+      test(1, 2);
+      test(1, 1);
+      test(1, -1);
+      break;
+    case 'Bool32x4':
+    case 'Bool16x8':
+    case 'Bool8x16':
+      test(true, false);
+      test(false, true);
+      break;
+  }
+}
+
+
+function TestComparison(type, lanes) {
+  var simdFn = SIMD[type];
+  var a = createInstance(type), b = createInstance(type);
+
+  function compare(other) {
+    var throwFuncs = [
+      function lt() { a < b; },
+      function gt() { a > b; },
+      function le() { a <= b; },
+      function ge() { a >= b; },
+      function lt_same() { a < a; },
+      function gt_same() { a > a; },
+      function le_same() { a <= a; },
+      function ge_same() { a >= a; },
+    ];
+
+    for (var f of throwFuncs) {
+      assertThrows(f, TypeError);
+      %OptimizeFunctionOnNextCall(f);
+      assertThrows(f, TypeError);
+      assertThrows(f, TypeError);
+    }
+  }
+
+  // Test comparison against the same SIMD type.
+  compare(b);
+  // Test comparison against other types.
+  checkTypeMatrix(type, compare);
+}
+
+
+// Test SIMD value wrapping/boxing over non-builtins.
+function TestCall(type, lanes) {
+  var simdFn = SIMD[type];
+  var instance = createInstance(type);
+  simdFn.prototype.getThisProto = function () {
+    return Object.getPrototypeOf(this);
+  }
+  assertTrue(instance.getThisProto() === simdFn.prototype)
+}
+
+
+function TestAsSetKey(type, lanes, set) {
+  var simdFn = SIMD[type];
+  var instance = createInstance(type);
+
+  function test(set, key) {
+    assertFalse(set.has(key));
+    assertFalse(set.delete(key));
+    if (!(set instanceof WeakSet)) {
+      assertSame(set, set.add(key));
+      assertTrue(set.has(key));
+      assertTrue(set.delete(key));
+    } else {
+      // SIMD values can't be used as keys in WeakSets.
+      assertThrows(function() { set.add(key) });
+    }
+    assertFalse(set.has(key));
+    assertFalse(set.delete(key));
+    assertFalse(set.has(key));
+  }
+
+  test(set, instance);
+}
+
+
+function TestAsMapKey(type, lanes, map) {
+  var simdFn = SIMD[type];
+  var instance = createInstance(type);
+
+  function test(map, key, value) {
+    assertFalse(map.has(key));
+    assertSame(undefined, map.get(key));
+    assertFalse(map.delete(key));
+    if (!(map instanceof WeakMap)) {
+      assertSame(map, map.set(key, value));
+      assertSame(value, map.get(key));
+      assertTrue(map.has(key));
+      assertTrue(map.delete(key));
+    } else {
+      // SIMD values can't be used as keys in WeakMaps.
+      assertThrows(function() { map.set(key, value) });
+    }
+    assertFalse(map.has(key));
+    assertSame(undefined, map.get(key));
+    assertFalse(map.delete(key));
+    assertFalse(map.has(key));
+    assertSame(undefined, map.get(key));
+  }
+
+  test(map, instance, {});
+}
+
+
+// Test SIMD type with Harmony reflect-apply.
+function TestReflectApply(type) {
+  var simdFn = SIMD[type];
+  var instance = createInstance(type);
+
+  function returnThis() { return this; }
+  function returnThisStrict() { 'use strict'; return this; }
+  function noop() {}
+  function noopStrict() { 'use strict'; }
+  var R = void 0;
+
+  assertSame(SIMD[type].prototype,
+             Object.getPrototypeOf(
+                Reflect.apply(returnThis, instance, [])));
+  assertSame(instance, Reflect.apply(returnThisStrict, instance, []));
+
+  assertThrows(
+      function() { 'use strict'; Reflect.apply(instance); }, TypeError);
+  assertThrows(
+      function() { Reflect.apply(instance); }, TypeError);
+  assertThrows(
+      function() { Reflect.apply(noopStrict, R, instance); }, TypeError);
+  assertThrows(
+      function() { Reflect.apply(noop, R, instance); }, TypeError);
+}
+
+
+function TestSIMDTypes() {
+  for (var i = 0; i < simdTypeNames.length; ++i) {
+    var type = simdTypeNames[i],
+        lanes = lanesForType(type);
+    TestConstructor(type, lanes);
+    TestType(type, lanes);
+    TestPrototype(type, lanes);
+    TestValueOf(type, lanes);
+    TestGet(type, lanes);
+    TestToBoolean(type, lanes);
+    TestToString(type, lanes);
+    TestToNumber(type, lanes);
+    TestCoercions(type, lanes);
+    TestEquality(type, lanes);
+    TestSameValue(type, lanes);
+    TestComparison(type, lanes);
+    TestCall(type, lanes);
+    TestAsSetKey(type, lanes, new Set);
+    TestAsSetKey(type, lanes, new WeakSet);
+    TestAsMapKey(type, lanes, new Map);
+    TestAsMapKey(type, lanes, new WeakMap);
+    TestReflectApply(type);
+  }
+}
+TestSIMDTypes();
+
+// Tests for the global SIMD object.
+function TestSIMDObject() {
+  assertSame(typeof SIMD, 'object');
+  assertSame(SIMD.constructor, Object);
+  assertSame(Object.getPrototypeOf(SIMD), Object.prototype);
+  assertSame(SIMD + "", "[object SIMD]");
+  // The SIMD object is mutable.
+  SIMD.foo = "foo";
+  assertSame(SIMD.foo, "foo");
+  delete SIMD.foo;
+  delete SIMD.Bool8x16;
+  assertSame(SIMD.Bool8x16, undefined);
+}
+TestSIMDObject()
+
+
+function TestStringify(expected, input) {
+  assertEquals(expected, JSON.stringify(input));
+  assertEquals(expected, JSON.stringify(input, (key, value) => value));
+  assertEquals(JSON.stringify(input, null, "="),
+               JSON.stringify(input, (key, value) => value, "="));
+}
+
+TestStringify(undefined, SIMD.Float32x4(1, 2, 3, 4));
+TestStringify('[null]', [SIMD.Float32x4(1, 2, 3, 4)]);
+TestStringify('[{}]', [Object(SIMD.Float32x4(1, 2, 3, 4))]);
+var simd_wrapper = Object(SIMD.Float32x4(1, 2, 3, 4));
+TestStringify('{}', simd_wrapper);
+simd_wrapper.a = 1;
+TestStringify('{"a":1}', simd_wrapper);