962fd4ae4b
This makes sure we are not inserting {OsrPoll} instructions for any
statements that are not actually loops and have no back edges. Without
back edges the {BytecodeGraphBuilder} is unable to deduce loop ranges
and hence cannot construct a graph for OSR entry.
R=neis@chromium.org
TEST=mjsunit/regress/regress-5252
BUG=v8:5252
Review-Url: https://codereview.chromium.org/2200733002
Cr-Commit-Position: refs/heads/master@{#38233}
32 lines
767 B
JavaScript
32 lines
767 B
JavaScript
// Copyright 2016 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 --ignition --ignition-osr --turbo-from-bytecode
|
|
|
|
(function TestNonLoopyLoop() {
|
|
function f() {
|
|
do {
|
|
%OptimizeOsr();
|
|
return 23;
|
|
} while(false)
|
|
}
|
|
assertEquals(23, f());
|
|
assertEquals(23, f());
|
|
})();
|
|
|
|
(function TestNonLoopyGenerator() {
|
|
function* g() {
|
|
do {
|
|
%OptimizeOsr();
|
|
yield 23;
|
|
yield 42;
|
|
} while(false)
|
|
return 999;
|
|
}
|
|
var gen = g();
|
|
assertEquals({ value:23, done:false }, gen.next());
|
|
assertEquals({ value:42, done:false }, gen.next());
|
|
assertEquals({ value:999, done:true }, gen.next());
|
|
})();
|