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/*
* Copyright (C) 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
class Main {
public static void $noinline$testMain(Main m) {
expectEquals(0, m.myField);
}
public static void main(String[] args) {
$noinline$doTest(true);
$noinline$doTest(false);
}
public static void $noinline$doTest(boolean testValue) {
Main m = new Main();
// LSE will find that this store can be removed, as both branches override the value with a new
// one.
m.myField = 42;
if (testValue) {
// LSE will remove this store as well, as it's the value after the store of 42 is removed.
m.myField = 0;
// This makes sure `m` gets materialized. At this point, the bug is that the partial LSE
// optimization thinks the value incoming this block for `m.myField` is 42, however that
// store, as well as the store to 0, have been removed.
$noinline$testMain(m);
} else {
m.myField = 3;
expectEquals(3, m.myField);
}
}
public static void expectEquals(int expected, int actual) {
if (expected != actual) {
throw new Error("Expected " + expected + ", got " + actual);
}
}
int myField = 0;
}
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