v8/test/mjsunit/asm/construct-double.js
bmeurer 4436c2642a [turbofan] Support for %_DoubleHi, %_DoubleLo and %_ConstructDouble.
This adds support for the double bits intrinsics to TurboFan, and is
a first step towards fast Math functions inlined into TurboFan code
or even compiled by themselves with TurboFan.

Review URL: https://codereview.chromium.org/974313002

Cr-Commit-Position: refs/heads/master@{#27006}
2015-03-05 09:22:38 +00:00

34 lines
870 B
JavaScript

// 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: --allow-natives-syntax
var stdlib = this;
var foreign = {};
var heap = new ArrayBuffer(64 * 1024);
var m = (function(stdlib, foreign, heap) {
"use asm";
function cd1(i, j) {
i = i|0;
j = j|0;
return +%_ConstructDouble(i, j);
}
function cd2(i) {
i = i|0;
return +%_ConstructDouble(0, i);
}
return { cd1: cd1, cd2: cd2 };
})(stdlib, foreign, heap);
assertEquals(0.0, m.cd1(0, 0));
assertEquals(%ConstructDouble(0, 1), m.cd2(1));
for (var i = -2147483648; i < 2147483648; i += 3999773) {
assertEquals(%ConstructDouble(0, i), m.cd2(i));
for (var j = -2147483648; j < 2147483648; j += 3999773) {
assertEquals(%ConstructDouble(i, j), m.cd1(i, j));
}
}