Expose SIMD.Float32x4 type to Javascript.

src/harmony-simd.js

Index: src/harmony-simd.js
diff --git a/src/harmony-simd.js b/src/harmony-simd.js
new file mode 100644
index 0000000000000000000000000000000000000000..e12e1dc8dc23fcfcae25e08db9fd4942f36e767e
--- /dev/null
+++ b/src/harmony-simd.js
@@ -0,0 +1,89 @@
+// 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.
+
+var $float32x4ToString;
+
+(function(global, utils) {
+
+"use strict";
+
+%CheckIsBootstrapping();
+
+// -------------------------------------------------------------------
+// Imports
+
+var GlobalSIMD = global.SIMD;
+var GlobalFloat32x4 = GlobalSIMD.Float32x4;
+
+//-------------------------------------------------------------------
+
+function Float32x4Constructor(x, y, z, w) {
+  if (%_IsConstructCall()) throw MakeTypeError(kNotConstructor, "Float32x4");
+  if (!IS_NUMBER(x) || !IS_NUMBER(y) || !IS_NUMBER(z) || !IS_NUMBER(w)) {
+    throw MakeTypeError(kInvalidArgument);
+  }
+  return %CreateFloat32x4(x, y, z, w);
+}
+
+function Float32x4SplatConstructor(s) {

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

Nit: just 'Float32x4Splat' is more consistent

[bbudge, 2015/07/06 23:59:04]

Done.

+  return %CreateFloat32x4(s, s, s, s);
+}
+
+function Float32x4CheckJS(a) {
+  return %Float32x4Check(a);
+}
+
+function Float32x4ToString() {
+  if (!(IS_FLOAT32X4(this) || IS_FLOAT32X4_WRAPPER(this))) {
+    throw MakeTypeError(kIncompatibleMethodReceiver,
+                        "Float32x4.prototype.toString", this);
+  }
+  var value = %_ValueOf(this);
+  var w = GlobalFloat32x4.extractLane(value, 0),
+      x = GlobalFloat32x4.extractLane(value, 1),
+      y = GlobalFloat32x4.extractLane(value, 2),
+      z = GlobalFloat32x4.extractLane(value, 3);
+  return "Float32x4(" + w + ", " + x + ", " + y + ", " + z + ")";
+}
+
+function Float32x4ValueOf() {
+  if (!(IS_FLOAT32X4(this) || IS_FLOAT32X4_WRAPPER(this))) {
+    throw MakeTypeError(kIncompatibleMethodReceiver,
+                        "Float32x4.prototype.valueOf", this);
+  }
+  return %_ValueOf(this);
+}
+
+//-------------------------------------------------------------------
+
+function Float32x4ExtractLaneJS(value, lane) {
+  return %Float32x4ExtractLane(value, lane);
+}
+
+// -------------------------------------------------------------------
+
+%AddNamedProperty(GlobalSIMD, symbolToStringTag, 'SIMD', READ_ONLY | DONT_ENUM);
+%AddNamedProperty(GlobalSIMD, 'float32x4', GlobalFloat32x4, DONT_ENUM);
+
+%SetCode(GlobalFloat32x4, Float32x4Constructor);
+%FunctionSetPrototype(GlobalFloat32x4, {});
+%AddNamedProperty(
+    GlobalFloat32x4.prototype, 'constructor', GlobalFloat32x4, DONT_ENUM);
+%AddNamedProperty(
+    GlobalFloat32x4, symbolToStringTag, 'Float32x4', DONT_ENUM | READ_ONLY);
+
+utils.InstallFunctions(GlobalFloat32x4.prototype, DONT_ENUM, [
+  'valueOf', Float32x4ValueOf,
+  'toString', Float32x4ToString,
+]);
+
+utils.InstallFunctions(GlobalFloat32x4, DONT_ENUM, [
+  'splat', Float32x4SplatConstructor,
+  'check', Float32x4CheckJS,
+  'extractLane', Float32x4ExtractLaneJS,
+]);
+
+$float32x4ToString = Float32x4ToString;
+
+})