Expose SIMD.Float32x4 type to Javascript.

test/mjsunit/harmony/simd.js

+// Copyright 2015 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --harmony-simd --harmony-tostring --allow-natives-syntax
+
+function isValidSimdString(string, value, type, lanes) {
+  var simdFn = SIMD[type],
+      parseFn =
+          type.indexOf('float') === 0 ? Number.parseFloat : Number.parseInt;
+  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;
+}
+
+

[rossberg, 2015/07/02 13:35:43]

Add tests for the SIMD object itself, e.g.:

assertSame(typeof SIMD, 'object');
assertSame(SIMD.constructor, Object);
assertSame(Object.getPrototypeOf(SIMD), Object.prototype);
assertSame(SIMD + "", "[object SIMD]");

[bbudge, 2015/07/06 23:59:05]

Thanks. Done.

+// Test different forms of constructor calls.
+function TestConstructor(type, lanes, values) {
+  var simdFn = SIMD[type];
+  assertFalse(Object === simdFn.prototype.constructor)
+  assertFalse(simdFn === Object.prototype.constructor)
+  assertSame(simdFn, simdFn.prototype.constructor)
+
+  // Constructors expect values for all lanes.
+  assertThrows(function () { simdFn() }, TypeError)
+  assertThrows(function () { simdFn(0) }, TypeError)
+  switch (lanes) {
+    case 4:
+      values.push(simdFn(0, 1, 2, 3));
+      values.push(simdFn(-0, NaN, 0, 0.5));
+      // Constructors expect values for all lanes.
+      assertThrows(function () { simdFn(0, 1) }, TypeError)
+      assertThrows(function () { simdFn(0, 1, 2) }, TypeError)
+      break
+  }
+  for (var i in values) {
+    assertSame(simdFn, values[i].__proto__.constructor)
+    assertSame(simdFn, Object(values[i]).__proto__.constructor)

[rossberg, 2015/07/02 13:35:43]

assertSame(simdFn.prototype, value[i].__proto__)  etc

[bbudge, 2015/07/06 23:59:05]

Done.

+  }
+}
+
+
+function TestType(type, lanes, values) {
+  for (var i in values) {
+    assertEquals(type, typeof values[i])
+    assertTrue(typeof values[i] === type)
+    assertTrue(typeof Object(values[i]) === 'object')
+    assertEquals(null, %_ClassOf(values[i]))
+    assertEquals("Float32x4", %_ClassOf(Object(values[i])))
+  }
+}
+
+
+function TestPrototype(type, lanes, values) {
+  var simdFn = SIMD[type];
+  assertSame(Object.prototype, simdFn.prototype.__proto__)
+  for (var i in values) {
+    assertSame(simdFn.prototype, values[i].__proto__)
+    assertSame(simdFn.prototype, Object(values[i]).__proto__)
+  }
+}
+
+
+function TestValueOf(type, lanes, values) {
+  var simdFn = SIMD[type];
+  for (var i in values) {
+    assertTrue(values[i] === Object(values[i]).valueOf())
+    assertTrue(values[i] === values[i].valueOf())
+    assertTrue(simdFn.prototype.valueOf.call(Object(values[i])) === values[i])
+    assertTrue(simdFn.prototype.valueOf.call(values[i]) === values[i])
+  }
+}
+
+
+function TestGet(type, lanes, values) {
+  var simdFn = SIMD[type];
+  for (var i in values) {
+    assertEquals(undefined, values[i].a)
+    assertEquals(undefined, values[i]["a" + "b"])
+    assertEquals(undefined, values[i]["" + "1"])
+    assertEquals(undefined, values[i][42])
+  }
+}
+
+
+function TestToBoolean(type, lanes, values) {
+  for (var i in values) {
+    assertTrue(Boolean(Object(values[i])))
+    assertFalse(!Object(values[i]))
+    assertTrue(Boolean(values[i]).valueOf())
+    assertFalse(!values[i])
+    assertTrue(!!values[i])
+    assertTrue(values[i] && true)
+    assertFalse(!values[i] && false)
+    assertTrue(!values[i] || true)
+    assertEquals(1, values[i] ? 1 : 2)
+    assertEquals(2, !values[i] ? 1 : 2)
+    if (!values[i]) assertUnreachable();
+    if (values[i]) {} else assertUnreachable();
+  }
+}
+
+
+function TestToString(type, lanes, values) {
+  var simdFn = SIMD[type];
+  for (var i in values) {
+    assertEquals(values[i].toString(), String(values[i]))
+    assertTrue(isValidSimdString(values[i].toString(), values[i], type, lanes))
+    assertTrue(
+        isValidSimdString(Object(values[i]).toString(), values[i], type, lanes))
+    assertTrue(isValidSimdString(
+        simdFn.prototype.toString.call(values[i]), values[i], type, lanes))
+  }
+}
+
+
+function TestToNumber(type, lanes, values) {
+  for (var i in values) {
+    assertThrows(function() { Number(Object(values[i])) }, TypeError)
+    assertThrows(function() { +Object(values[i]) }, TypeError)
+    assertThrows(function() { Number(values[i]) }, TypeError)
+    assertThrows(function() { values[i] + 0 }, TypeError)
+  }
+}
+
+
+function TestEquality(type, lanes, values) {
+  // Every SIMD value should equal itself, and non-strictly equal its wrapper.

[rossberg, 2015/07/02 13:35:43]

This is lacking tests that make sure that equality is properly structural:

SIMD.float32x4(1, 2, 3, 4) == SIMD.float32x4(1, 2, 3, 4)
SIMD.float32x4(1, 2, 3, 4) === SIMD.float32x4(1, 2, 3, 4)

which probably doesn't work correctly yet.

[bbudge, 2015/07/06 23:59:05]

Added tests for structural equality semantics.

+  for (var i in values) {
+    assertSame(values[i], values[i])
+    assertEquals(values[i], values[i])
+    assertTrue(Object.is(values[i], values[i]))
+    assertTrue(values[i] === values[i])
+    assertTrue(values[i] == values[i])
+    assertFalse(values[i] === Object(values[i]))
+    assertFalse(Object(values[i]) === values[i])
+    assertFalse(values[i] == Object(values[i]))
+    assertFalse(Object(values[i]) == values[i])
+    assertTrue(values[i] === values[i].valueOf())
+    assertTrue(values[i].valueOf() === values[i])
+    assertTrue(values[i] == values[i].valueOf())
+    assertTrue(values[i].valueOf() == values[i])
+    assertFalse(Object(values[i]) === Object(values[i]))
+    assertEquals(Object(values[i]).valueOf(), Object(values[i]).valueOf())
+  }
+
+  // SIMD values should not equal other SIMD values.
+  for (var i = 0; i < values.length; ++i) {
+    for (var j = i + 1; j < values.length; ++j) {
+      assertFalse(Object.is(values[i], values[j]))
+      assertFalse(values[i] === values[j])
+      assertFalse(values[i] == values[j])
+    }
+  }
+
+  // SIMD values should not be equal to any other kind of object.
+  var others = [347, 1.275, NaN, "string", null, undefined, {}, function() {}]
+  for (var i in values) {
+    for (var j in others) {
+      assertFalse(values[i] === others[j])
+      assertFalse(others[j] === values[i])
+      assertFalse(values[i] == others[j])
+      assertFalse(others[j] == values[i])
+    }
+  }
+}
+
+
+function TestComparison(type, lanes, values) {
+  var a = values[0], b = values[1];
+
+  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; }
+
+  var throwFuncs = [lt, gt, le, ge, lt_same, gt_same, le_same, ge_same];
+
+  for (var f of throwFuncs) {
+    assertThrows(f, TypeError);
+    %OptimizeFunctionOnNextCall(f);
+    assertThrows(f, TypeError);
+    assertThrows(f, TypeError);
+  }
+}
+
+
+// Test SIMD value wrapping/boxing over non-builtins.
+function TestCall(type, lanes, values) {
+  var simdFn = SIMD[type];
+  simdFn.prototype.getThisProto = function () {
+    return Object.getPrototypeOf(this);
+  }
+  for (var i in values) {
+    assertTrue(values[i].getThisProto() === simdFn.prototype)
+  }
+}
+
+
+function TestAll() {
+  var types = [ 'float32x4' ];
+
+  function lanesForType(typeName) {
+    return Number.parseInt(typeName[typeName.length - 1]);
+  }
+
+  for (var i = 0; i < types.length; ++i) {
+    var type = types[i],
+        lanes = lanesForType(type);
+    var values = [];
+    TestConstructor(type, lanes, values);
+    TestType(type, lanes, values);
+    TestPrototype(type, lanes, values);
+    TestValueOf(type, lanes, values);
+    TestGet(type, lanes, values);
+    TestToBoolean(type, lanes, values);
+    TestToString(type, lanes, values);
+    TestToNumber(type, lanes, values);
+    TestEquality(type, lanes, values);
+    TestComparison(type, lanes, values);
+    TestCall(type, lanes, values);
+  }
+}
+TestAll()