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package org.graalvm.compiler.hotspot.amd64.test;

import org.junit.Test;
import org.junit.Assert;

Tests Bit Manipulation Instruction andn pattern matching and result.
/** * Tests Bit Manipulation Instruction andn pattern matching and result. */
public class BmiAndn extends BmiCompilerTest { // from Intel manual VEX.NDS.LZ.0F38.W0 F2 /r, example c4e260f2c2 private final byte[] instrMask = new byte[]{ (byte) 0xFF, (byte) 0x1F, (byte) 0x00, (byte) 0xFF}; private final byte[] instrPattern = new byte[]{ (byte) 0xC4, // prefix for 3-byte VEX instruction (byte) 0x02, // 00010 implied 0F 38 leading opcode bytes (byte) 0x00, (byte) 0xF2}; public int andni(int n1, int n2) { return (n1 & (~n2)); } public long andnl(long n1, long n2) { return (n1 & (~n2)); } // Pattern matching check for andni @Test public void test1() { Assert.assertTrue(verifyPositive("andni", instrMask, instrPattern)); } // Pattern matching check for andnl @Test public void test2() { Assert.assertTrue(verifyPositive("andnl", instrMask, instrPattern)); } // Result correctness check @Test public void test3() { int n1 = 42; int n2 = 100; test("andni", n1, n2); } @Test public void test4() { long n1 = 420000000; long n2 = 1000000000; test("andnl", n1, n2); } }