8031498: Cleanup and re-factorize PhaseChaitin::build_ifg_physical
Summary: Created sub-functions, added data structures, improved naming and removed unnecessary code
Reviewed-by: kvn, roland, rbackman
/*
* Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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* questions.
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*/
/**
* @test
* @bug 7199742
* @summary A lot of C2 OSR compilations of the same method's bci
*
* @run main/othervm -Xmx32m -Xbatch Test7199742
*/
public class Test7199742 {
private static final int ITERS = 10000000;
public static void main(String args[]) {
Test7199742 t = new Test7199742();
for (int i=0; i<10; i++) {
test(t, 7);
}
}
static Test7199742 test(Test7199742 t, int m) {
int i = -(ITERS/2);
if (i == 0) return null;
Test7199742 v = null;
while(i < ITERS) {
if ((i&m) == 0) {
v = t;
}
i++;
}
return v;
}
}