v8/test/mjsunit/compiler/diamond-followedby-branch.js
Ross McIlroy 2990658ea2 [Tests] Add %OptimizeFunctionForTopTier test function
And use it to remove the set of TurboProp test skips.

BUG=v8:9684,v8:12013

Change-Id: I878e2b9c595449c954735290959d3b38eead5a5b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3043963
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75865}
2021-07-22 16:05:36 +00:00

23 lines
687 B
JavaScript

// Copyright 2019 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
// Check that the branch elimination replace the redundant branch condition with
// a phi node, and then the branch is folded in EffectControlLinearizationPhase.
function foo(cond, v1, v2) {
cond = cond | 0;
var a = cond == 1 ? v1 : v2;
if(cond == 1) {
%TurbofanStaticAssert(a == v1);
} else {
%TurbofanStaticAssert(a == v2);
}
}
%PrepareFunctionForOptimization(foo);
foo(1, 10, 20); foo(2, 30, 40);
%OptimizeFunctionForTopTier(foo);
foo(1, 10, 20); foo(2, 30, 40);