40f9cf49d7
Adds a 'performance' test which tracks the number of expressions which can be nested before the compiler runs out of stack space. This isn't really a performance test, but is created as a js-perf-test to enable regression tracking in the dashboards. Change-Id: Iee0c00df53b38b083e2dde09676ac9b13e439461 Reviewed-on: https://chromium-review.googlesource.com/539419 Reviewed-by: Leszek Swirski <leszeks@chromium.org> Commit-Queue: Ross McIlroy <rmcilroy@chromium.org> Cr-Commit-Position: refs/heads/master@{#46019}
65 lines
1.7 KiB
JavaScript
65 lines
1.7 KiB
JavaScript
// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Logical Expressions
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AddTest('Or-Value', '||', false);
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AddTest('Or-Test', '||', true);
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AddTest('And-Value', '&&', false);
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AddTest('And-Test', '&&', true);
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AddTest('Comma-Value', ',', false);
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AddTest('Comma-Test', ',', true);
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AddTest('Comma-Test', ',', true);
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// Compare Expressions
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AddTest('Equals-Value', '==', false);
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AddTest('Equals-Test', '==', true);
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AddTest('StrictEquals-Value', '===', false);
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AddTest('StrictEquals-Test', '===', true);
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AddTest('GreaterThan-Value', '>', false);
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AddTest('GreaterThan-Test', '>', true);
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// Binary Expressions
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AddTest('Add', '+');
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AddTest('Sub', '-');
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AddTest('BitwiseOr', '|');
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AddTestCustomPrologue('StringConcat', '+', '"string" +');
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function TestExpressionDepth(depth, expression, prologue, epilogue) {
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var func = '(function f(a) {\n' + prologue;
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for (var i = 0; i < depth; i++) {
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func += 'a ' + expression;
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}
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func += 'a' + epilogue + '})();'
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eval(func);
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}
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function RunTest(name, expression, prologue, epilogue) {
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var depth;
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try {
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for (depth = 0; depth < 20000; depth += 100) {
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TestExpressionDepth(depth, expression, prologue, epilogue);
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}
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} catch (e) {
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if (!e instanceof RangeError) {
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print(name + '-ExpressionDepth(Score): ERROR');
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return;
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}
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}
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print(name + '-ExpressionDepth(Score): ' + depth);
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}
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function AddTest(name, expression, in_test) {
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prologue = '';
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epilogue = '';
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if (in_test) {
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prologue = 'if (';
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epilogue = ') { return 1; }';
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}
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RunTest(name, expression, prologue, epilogue);
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}
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function AddTestCustomPrologue(name, expression, prologue) {
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RunTest(name, expression, prologue, '');
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}
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