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/**
 * @test
 * @bug 8279508
 * @summary Auto-vectorize Math.round API
 * @requires vm.compiler2.enabled
 * @requires vm.cpu.features ~= ".*avx512dq.*"
 * @requires os.simpleArch == "x64"
 * @library /test/lib /
 * @run driver compiler.vectorization.TestRoundVectDouble
 */

package compiler.vectorization;

import compiler.lib.ir_framework.*;

public class TestRoundVectDouble {
  private static final int ARRLEN = 1024;
  private static final int ITERS  = 11000;

  private static double [] dinp;
  private static long   [] lout;

  public static void main(String args[]) {
      TestFramework.runWithFlags("-XX:-TieredCompilation",
                                  "-XX:UseAVX=3",
                                  "-XX:CompileThresholdScaling=0.3");
      System.out.println("PASSED");
  }

  @Test
  @IR(applyIf = {"UseAVX", "3"}, counts = {IRNode.ROUND_VD, " > 0 "})
  public void test_round_double(long[] lout, double[] dinp) {
      for (int i = 0; i < lout.length; i+=1) {
          lout[i] = Math.round(dinp[i]);
      }
  }

  @Run(test = {"test_round_double"}, mode = RunMode.STANDALONE)
  public void kernel_test_round_double() {
      dinp = new double[ARRLEN];
      lout = new long[ARRLEN];
      for(int i = 0 ; i < ARRLEN; i++) {
          dinp[i] = (double)i*1.4;
      }
      for (int i = 0; i < ITERS; i++) {
          test_round_double(lout , dinp);
      }
  }
}