v8/test/mjsunit/compiler/regress-f64-w32-change.js
jarin a9fa0498e1 [turbofan] Only infer signedness for Float64->Word32 representation change from the input type.
If the input type does not help us, we are conservative and truncate (rather than guessing signed).

Review URL: https://codereview.chromium.org/1455103002

Cr-Commit-Position: refs/heads/master@{#32075}
2015-11-18 10:02:33 +00:00

24 lines
491 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 f = (function () {
"use asm";
var f64use = 0;
function f(x, b) {
x = x|0;
b = b >>> 0;
var f64 = x ? -1 : b;
f64use = f64 + 0.5;
var w32 = x ? 1 : f64;
return (w32 + 1)|0;
}
return f;
})();
%OptimizeFunctionOnNextCall(f);
assertEquals(0, f(0, -1));