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/**
 * @test
 * @bug 8282711
 * @summary Accelerate Math.signum function for AVX and AVX512.
 * @requires vm.compiler2.enabled
 * @requires vm.cpu.features ~= ".*avx.*"
 * @requires os.simpleArch == "x64"
 * @library /test/lib /
 * @run driver compiler.vectorization.TestSignumVector
 */

package compiler.vectorization;

import compiler.lib.ir_framework.*;

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

  private static double [] dinp;
  private static double [] dout;
  private static float  [] finp;
  private static float  [] fout;

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

  @Test
  @IR(counts = {"SignumVD" , " > 0 "})
  public void test_signum_double(double[] dout, double[] dinp) {
      for (int i = 0; i < dout.length; i+=1) {
          dout[i] = Math.signum(dinp[i]);
      }
  }

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

  @Test
  @IR(counts = {"SignumVF" , " > 0 "})
  public void test_signum_float(float[] fout, float[] finp) {
      for (int i = 0; i < finp.length; i+=1) {
          fout[i] = Math.signum(finp[i]);
      }
  }

  @Run(test = {"test_signum_float"}, mode = RunMode.STANDALONE)
  public void kernel_test_round() {
      finp = new float[ARRLEN];
      fout = new float[ARRLEN];
      for(int i = 0 ; i < ARRLEN; i++) {
          finp[i] = (float)i*1.4f;
      }
      for (int i = 0; i < ITERS; i++) {
          test_signum_float(fout , finp);
      }
  }
}