v8/test/mjsunit/regress/regress-1084953.js
Ross McIlroy f34771f79a [TurboProp] Don't try to rewire unreachable blocks to end.
We can't consistently rewire the successor blocks of an unreachable node to
disconnect them from the graph when we are trying to maintain the schedule.
Instead simply leave the code there. As a future optimization we could add a
proper scheduled dead code elimination phase which can deal with this.

As a side-effect, one of the tests sees a int64 DeadValue, so add support for that
in the instruction selector.

BUG=chromium:1083272,chromium:1083763,chromium:1084953,v8:9684

Change-Id: I69a6feaeef4eae62110392e27ea848b28bccf787
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2209061
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Auto-Submit: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67953}
2020-05-25 10:42:52 +00:00

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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 --turboprop
function foo() {
try {
+Symbol();
} catch {
}
}
%PrepareFunctionForOptimization(foo);
foo();
%OptimizeFunctionOnNextCall(foo);
foo();