v8/test/mjsunit/compiler/regress-786521.js
Tobias Tebbi 2290ad8b55 [turbofan] do not remove speculative Number operations when they can deopt
We cannot remove a speculative operation when it's type relies on it to deopt.
Fix this by only relying on the lowering to remove operations.

Bug: chromium:786521
Change-Id: I2cf45e8d45b76cfeb06e6329f323cade74719124
Reviewed-on: https://chromium-review.googlesource.com/793043
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49882}
2017-12-06 09:16:58 +00:00

24 lines
526 B
JavaScript

// Copyright 2017 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
// Provoke type None as result of a SpeculativeNumberMultiply to
// ensure that Turbofan can handle this.
function inlined(b, x) {
if (b) {
x * 2 * 2
}
}
inlined(true, 1);
inlined(true, 2);
inlined(false, 1);
function foo(b) { inlined(b, "") }
foo(false); foo(false);
%OptimizeFunctionOnNextCall(foo);
foo(true);