v8/test/mjsunit/compiler/osr-manual1.js
titzer 4c302ca290 Make it easier to test OSR with %OptimizeOsr() runtime call.
This call triggers OSR for the current function. And also allows explicitly testing OSR on the top-level code.

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/906243002

Cr-Commit-Position: refs/heads/master@{#26523}
2015-02-09 12:47:43 +00:00

36 lines
894 B
JavaScript

// Copyright 2014 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 --use-osr --turbo-osr
var counter = 111;
function gen(w) { // defeat compiler cache.
var num = counter++;
var Z = [ "", "", "", ];
Z[w] = "%OptimizeOsr()";
var src =
"function f" + num + "(a,b,c) {" +
" var x = 0;" +
" var y = 0;" +
" var z = 0;" +
" while (a > 0) { " + Z[0] + "; x += 19; a--; }" +
" while (b > 0) { " + Z[1] + "; y += 23; b--; }" +
" while (c > 0) { " + Z[2] + "; z += 29; c--; }" +
" return x + y + z;" +
"} f" + num;
return eval(src);
}
function check(x,a,b,c) {
for (var i = 0; i < 3; i++) {
var f = gen(i);
assertEquals(x, f(a, b, c));
}
}
check(213, 3,3,3);
check(365, 4,5,6);
check(6948, 99,98,97);