v8/test/mjsunit/compiler/fast-api-helpers.js
Maya Lekova be1fcdc9d2 [test] Introduce a d8-only flag for fast calls
This CL introduces a d8-only flag --expose-fast-api which enables the
test FastCAPI object if the --turbo-fast-api-calls flag is enabled. It
also disables --stress-snapshot, which is incompatible with fast calls.

Bug: v8:12137
Change-Id: I01e8321726b78be660fd6554225999bfc94006c3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3117485
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76505}
2021-08-26 13:07:52 +00:00

37 lines
1.1 KiB
JavaScript

// Copyright 2021 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: --turbo-fast-api-calls --expose-fast-api --allow-natives-syntax --opt
// Helper for sequence tests.
function optimize_and_check(func, fast_count, slow_count, expected) {
%PrepareFunctionForOptimization(func);
let result = func();
assertEqualsDelta(expected, result, 0.001);
fast_c_api.reset_counts();
%OptimizeFunctionOnNextCall(func);
result = func();
assertEqualsDelta(expected, result, 0.001);
assertOptimized(func);
assertEquals(fast_count, fast_c_api.fast_call_count());
assertEquals(slow_count, fast_c_api.slow_call_count());
}
function ExpectFastCall(func, expected) {
optimize_and_check(func, 1, 0, expected);
}
function ExpectSlowCall(func, expected) {
optimize_and_check(func, 0, 1, expected);
}
function assert_throws_and_optimized(func, arg) {
fast_c_api.reset_counts();
assertThrows(() => func(arg));
assertOptimized(func);
assertEquals(0, fast_c_api.fast_call_count());
assertEquals(1, fast_c_api.slow_call_count());
}