v8/test/mjsunit/regress/regress-1125871.js
Jakob Gruber 3edf54337a [compiler] Rename --turboprop-dynamic-map-checks
... to --turbo-dynamic-map-checks. With the upcoming use in NCI code,
this feature is no longer used exclusively by Turboprop.

Bug: v8:8888
Change-Id: I61e01db086fd2e8566d2e2a09574be74b6e5a7bd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2546693
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Auto-Submit: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71263}
2020-11-18 15:52:55 +00:00

26 lines
626 B
JavaScript

// Copyright 2020 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 --turbo-dynamic-map-checks --opt --no-always-opt
function bar(obj) {
// Add two dummy loads to make sure obj.b is in the same slot index as obj.a
// in foo.
obj.y;
obj.x;
return obj.b
}
function foo(obj) {
bar(obj);
return obj.a;
}
var obj = { a: 10, b: 20};
%PrepareFunctionForOptimization(foo);
%EnsureFeedbackVectorForFunction(bar);
foo(obj);
%OptimizeFunctionOnNextCall(foo);
assertEquals(10, foo(obj));