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
/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* published by the Free Software Foundation.
*
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* 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).
*
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* 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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*/
/**
* @test
* @bug 6769124
* @summary int value might not be correctly decoded on deopt with c1 on 64 bit
*
* @run main/othervm -Xcomp -XX:CompileOnly=TestDeoptInt6769124.m TestDeoptInt6769124
*/
public class TestDeoptInt6769124 {
static class A {
volatile int vl;
A(int v) {
vl = v;
}
}
static void m(int b) {
A a = new A(10);
int c;
c = b + a.vl; //accessing volatile field of class not loaded at compile time forces a deopt
if(c != 20) {
System.out.println("a (= " + a.vl + ") + b (= " + b + ") = c (= " + c + ") != 20");
throw new InternalError();
}
}
public static void main(String[] args) {
m(10);
}
}