10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 8063086
  27  * @summary X^2 special case for C2 yields different result than interpreter
  28  * @library /testlibrary /test/lib /
  29  * @modules java.base/jdk.internal.misc
  30  * @modules java.management
  31  * @build TestPow2

  32  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  33  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  34  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
  35  *                   -XX:-BackgroundCompilation -XX:-UseOnStackReplacement TestPow2
  36  *
  37  */
  38 
  39 import java.lang.reflect.*;
  40 import sun.hotspot.WhiteBox;
  41 import compiler.whitebox.CompilerWhiteBoxTest;

  42 


  43 public class TestPow2 {
  44 
  45     private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
  46 
  47     private static final double base = 5350.456329377186;
  48     private static final double exp = 2.0;
  49 
  50     static double m() {
  51         return Math.pow(base, exp);
  52     }
  53 
  54     static public void main(String[] args) throws NoSuchMethodException {
  55         Method test_method = TestPow2.class.getDeclaredMethod("m");
  56 
  57         double interpreter_result = m();
  58 
  59         // Compile with C1 if possible
  60         WHITE_BOX.enqueueMethodForCompilation(test_method, CompilerWhiteBoxTest.COMP_LEVEL_SIMPLE);
  61 
  62         double c1_result = m();

  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 8063086
  27  * @summary X^2 special case for C2 yields different result than interpreter
  28  * @library /testlibrary /test/lib /
  29  * @modules java.base/jdk.internal.misc
  30  *          java.management
  31  *
  32  * @build compiler.floatingpoint.TestPow2
  33  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  34  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  35  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
  36  *                   -XX:-BackgroundCompilation -XX:-UseOnStackReplacement
  37  *                   compiler.floatingpoint.TestPow2
  38  */
  39 
  40 package compiler.floatingpoint;
  41 
  42 import compiler.whitebox.CompilerWhiteBoxTest;
  43 import sun.hotspot.WhiteBox;
  44 
  45 import java.lang.reflect.Method;
  46 
  47 public class TestPow2 {
  48 
  49     private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
  50 
  51     private static final double base = 5350.456329377186;
  52     private static final double exp = 2.0;
  53 
  54     static double m() {
  55         return Math.pow(base, exp);
  56     }
  57 
  58     static public void main(String[] args) throws NoSuchMethodException {
  59         Method test_method = TestPow2.class.getDeclaredMethod("m");
  60 
  61         double interpreter_result = m();
  62 
  63         // Compile with C1 if possible
  64         WHITE_BOX.enqueueMethodForCompilation(test_method, CompilerWhiteBoxTest.COMP_LEVEL_SIMPLE);
  65 
  66         double c1_result = m();