/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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public class Main {
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private static int willInline(int a, int b) {
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return a & b;
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}
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static int[] a = new int[4];
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static int field = 42;
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public static void main(String[] args) throws Exception {
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// The order of optimizations that would lead to the problem was:
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// 1) Inlining of `willInline`.
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// 2) Bounds check elimination inserting a deopt at a[0] and removing the HBoundsCheck.
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// 3) Instruction simplifier simpilifying the inlined willInline to just `field`.
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//
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// At this point, if the environment of the HDeoptimization instruction was
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// just a pointer to the one in a[0], the uses lists would have not been updated
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// and the HBoundsCheck being dead code after the HDeoptimization, the simplifcation
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// at step 3) would not updated that environment.
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int inEnv = willInline(field, field);
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int doAdds = a[0] + a[1] + a[2] + a[3];
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if (inEnv != 42) {
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throw new Error("Expected 42");
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}
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if (doAdds != 0) {
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throw new Error("Expected 0");
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}
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}
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}
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