8027754: Enable loop optimizations for loops with MathExact inside
Reviewed-by: kvn, iveresov
/*
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*
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* version 2 for more details (a copy is included in the LICENSE file that
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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 8026844
* @summary Test repeating multiplyExact
* @compile MulExactIRepeatTest.java Verify.java
* @run main MulExactIRepeatTest
*
*/
public class MulExactIRepeatTest {
public static void main(String[] args) {
runTest(new Verify.MulExactI());
}
public static int nonExact(int x, int y, Verify.BinaryMethod method) {
int result = method.unchecked(x, y);
result += method.unchecked(x, y);
result += method.unchecked(x, y);
result += method.unchecked(x, y);
return result;
}
public static void runTest(Verify.BinaryMethod method) {
java.util.Random rnd = new java.util.Random();
for (int i = 0; i < 50000; ++i) {
int x = Integer.MAX_VALUE - 10;
int y = Integer.MAX_VALUE - 10 + rnd.nextInt(5);
int c = rnd.nextInt() / 10;
int d = rnd.nextInt(9);
int a = catchingExact(x, y, method);
if (a != 36) {
throw new RuntimeException("a != 36 : " + a);
}
int b = nonExact(c, d, method);
int n = exact(c, d, method);
if (n != b) {
throw new RuntimeException("n != b : " + n + " != " + b);
}
}
}
public static int exact(int x, int y, Verify.BinaryMethod method) {
int result = 0;
result += method.checkMethod(x, y);
result += method.checkMethod(x, y);
result += method.checkMethod(x, y);
result += method.checkMethod(x, y);
return result;
}
public static int catchingExact(int x, int y, Verify.BinaryMethod method) {
int result = 0;
try {
result += 5;
result = method.checkMethod(x, y);
} catch (ArithmeticException e) {
result += 1;
}
try {
result += 6;
result += method.checkMethod(x, y);
} catch (ArithmeticException e) {
result += 2;
}
try {
result += 7;
result += method.checkMethod(x, y);
} catch (ArithmeticException e) {
result += 3;
}
try {
result += 8;
result += method.checkMethod(x, y);
} catch (ArithmeticException e) {
result += 4;
}
return result;
}
}