Example usage for org.objectweb.asm.tree InsnList get

Introduction

In this page you can find the example usage for org.objectweb.asm.tree InsnList get.

Prototype

public AbstractInsnNode get(final int index) 

Source Link

Document

Returns the instruction whose index is given.

Usage

From source file:de.tuberlin.uebb.jbop.optimizer.controlflow.ConstantIfInlinerTest.java

License:Open Source License

/**
 * Tests that constantIfInliner is working correctly.
 * //from ww w .j a  va2  s.  c  o m
 * Input is
 * 
 * <pre>
 * if(1==1)
 * ...
 * </pre>
 * 
 * @throws JBOPClassException
 *           the jBOP class exception
 */
@Test
public void testConstantIfInlinerIF_ICMPNE() throws JBOPClassException {
    // INIT
    final LabelNode label = new LabelNode();
    builder.addInsn(new InsnNode(Opcodes.ICONST_1)).//
            addInsn(new InsnNode(Opcodes.ICONST_1)).//
            addInsn(new JumpInsnNode(Opcodes.IF_ICMPNE, label)).//
            addInsn(new InsnNode(Opcodes.NOP)).//
            addInsn(label).//
            addInsn(new InsnNode(Opcodes.RETURN));

    // RUN
    assertEquals(6, method.instructions.size());
    final InsnList optimized = constantIfInliner.optimize(method.instructions, method);

    // ASSERT
    assertEquals(3, optimized.size());
    assertEquals(Opcodes.NOP, optimized.get(0).getOpcode());
}

---

From source file:de.tuberlin.uebb.jbop.optimizer.controlflow.ConstantIfInlinerTest.java

License:Open Source License

/**
 * Tests that constantIfInliner is working correctly.
 * //from  w w  w  .  j a  v a  2  s.c o m
 * Input is
 * 
 * <pre>
 * if(1!=2)
 * ...
 * </pre>
 * 
 * @throws JBOPClassException
 *           the jBOP class exception
 */
@Test
public void testConstantIfInlinerIF_ICMPEQ() throws JBOPClassException {
    // INIT
    final LabelNode label = new LabelNode();
    builder.addInsn(new InsnNode(Opcodes.ICONST_1)).//
            addInsn(new InsnNode(Opcodes.ICONST_2)).//
            addInsn(new JumpInsnNode(Opcodes.IF_ICMPEQ, label)).//
            addInsn(new InsnNode(Opcodes.NOP)).//
            addInsn(label).//
            addInsn(new InsnNode(Opcodes.RETURN));

    // RUN
    assertEquals(6, method.instructions.size());
    final InsnList optimized = constantIfInliner.optimize(method.instructions, method);

    // ASSERT
    assertEquals(3, optimized.size());
    assertEquals(Opcodes.NOP, optimized.get(0).getOpcode());
}

---

From source file:de.tuberlin.uebb.jbop.optimizer.controlflow.ConstantIfInlinerTest.java

License:Open Source License

/**
 * Tests that constantIfInliner is working correctly.
 * /* w  ww  .j av a 2s . co m*/
 * Input is
 * 
 * <pre>
 * if(a)
 * ...
 * </pre>
 * 
 * where a is true
 * 
 * @throws JBOPClassException
 *           the jBOP class exception
 */
@Test
public void testConstantIfInlinerIFEQ() throws JBOPClassException {
    // INIT
    final LabelNode label = new LabelNode();
    builder.addInsn(new InsnNode(Opcodes.ICONST_1)).//
            addInsn(new JumpInsnNode(Opcodes.IFEQ, label)).//
            addInsn(new InsnNode(Opcodes.NOP)).//
            addInsn(label).//
            addInsn(new InsnNode(Opcodes.RETURN));

    // RUN
    assertEquals(5, method.instructions.size());
    final InsnList optimized = constantIfInliner.optimize(method.instructions, method);

    // ASSERT
    assertEquals(3, optimized.size());
    assertEquals(Opcodes.NOP, optimized.get(0).getOpcode());
}

---

From source file:de.tuberlin.uebb.jbop.optimizer.controlflow.ConstantIfInlinerTest.java

License:Open Source License

/**
 * Tests that constantIfInliner is working correctly.
 * //from   w w w.  j  ava 2 s.c  o m
 * Input is
 * 
 * <pre>
 * if(!a)
 * ...
 * </pre>
 * 
 * where a is false
 * 
 * @throws JBOPClassException
 *           the jBOP class exception
 */
@Test
public void testConstantIfInlinerIFNE() throws JBOPClassException {
    // INIT
    final LabelNode label = new LabelNode();
    builder.addInsn(new InsnNode(Opcodes.ICONST_0)).//
            addInsn(new JumpInsnNode(Opcodes.IFNE, label)).//
            addInsn(new InsnNode(Opcodes.NOP)).//
            addInsn(label).//
            addInsn(new InsnNode(Opcodes.RETURN));

    // RUN
    assertEquals(5, method.instructions.size());
    final InsnList optimized = constantIfInliner.optimize(method.instructions, method);

    // ASSERT
    assertEquals(3, optimized.size());
    assertEquals(Opcodes.NOP, optimized.get(0).getOpcode());
}

---

From source file:de.tuberlin.uebb.jbop.optimizer.controlflow.ConstantIfInlinerTest.java

License:Open Source License

/**
 * Tests that constantIfInliner is working correctly.
 * //from   w  ww  . j a  v  a 2s  .com
 * Input is
 * 
 * <pre>
 * if(a==null)
 * ...
 * </pre>
 * 
 * where a is not null
 * 
 * @throws JBOPClassException
 *           the jBOP class exception
 */
@Test
public void testConstantIfInlinerIFNULL() throws JBOPClassException {
    // INIT
    when(nonNullValue.is(Matchers.<AbstractInsnNode>any(), Matchers.<AbstractInsnNode>any(),
            Matchers.<List<AbstractInsnNode>>any(), Matchers.<List<AbstractInsnNode>>any()))
                    .thenReturn(Boolean.valueOf(true));
    final LabelNode label = new LabelNode();
    builder.addInsn(new TypeInsnNode(Opcodes.NEW, Type.getDescriptor(Object.class))).//
            addInsn(new JumpInsnNode(Opcodes.IFNULL, label)).//
            addInsn(new InsnNode(Opcodes.NOP)).//
            addInsn(label).//
            addInsn(new InsnNode(Opcodes.RETURN));

    // RUN
    assertEquals(5, method.instructions.size());
    final InsnList optimized = constantIfInliner.optimize(method.instructions, method);

    // ASSERT
    assertEquals(3, optimized.size());
    assertEquals(Opcodes.NOP, optimized.get(0).getOpcode());
}

---

From source file:de.tuberlin.uebb.jbop.optimizer.controlflow.ConstantIfInlinerTest.java

License:Open Source License

/**
 * Tests that constantIfInliner is working correctly.
 * //  w  w w  .j  a  v a2  s.  c o m
 * Input is
 * 
 * <pre>
 * if(a==null)
 * ...
 * </pre>
 * 
 * where a is null
 * 
 * @throws JBOPClassException
 *           the jBOP class exception
 */
@Test
public void testConstantIfInlinerIFNONNULL() throws JBOPClassException {
    // INIT
    final LabelNode label = new LabelNode();
    builder.addInsn(new InsnNode(Opcodes.ACONST_NULL)).//
            addInsn(new JumpInsnNode(Opcodes.IFNONNULL, label)).//
            addInsn(new InsnNode(Opcodes.NOP)).//
            addInsn(label).//
            addInsn(new InsnNode(Opcodes.RETURN));

    // RUN
    assertEquals(5, method.instructions.size());
    final InsnList optimized = constantIfInliner.optimize(method.instructions, method);

    // ASSERT
    assertEquals(3, optimized.size());
    assertEquals(Opcodes.NOP, optimized.get(0).getOpcode());
}

---

From source file:de.tuberlin.uebb.jbop.optimizer.controlflow.ConstantIfInlinerTest.java

License:Open Source License

/**
 * Tests that constantIfInliner is working correctly.
 * /*from  w  w  w  . j a va  2 s.c  om*/
 * Input is
 * 
 * <pre>
 * if(1>2)
 * ...
 * else
 * ...
 * </pre>
 * 
 * @throws JBOPClassException
 *           the jBOP class exception
 */
@Test
public void testConstantIfInlinerIF_ICMPLEWithElseChooseIf() throws JBOPClassException {
    // INIT
    final LabelNode label = new LabelNode();
    final LabelNode label2 = new LabelNode();
    builder.addInsn(new InsnNode(Opcodes.ICONST_2)).//
            addInsn(new InsnNode(Opcodes.ICONST_1)).//
            addInsn(new JumpInsnNode(Opcodes.IF_ICMPLE, label)).//
            addInsn(new InsnNode(Opcodes.NOP)).//
            addInsn(new InsnNode(Opcodes.NOP)).//
            addInsn(new JumpInsnNode(Opcodes.GOTO, label2)).//
            addInsn(label).//
            addInsn(new InsnNode(Opcodes.NOP)).//
            addInsn(label2).//
            addInsn(new InsnNode(Opcodes.RETURN));

    // RUN
    assertEquals(10, method.instructions.size());
    final InsnList optimized = constantIfInliner.optimize(method.instructions, method);

    // ASSERT
    assertEquals(4, optimized.size());
    assertEquals(Opcodes.NOP, optimized.get(0).getOpcode());
    assertEquals(Opcodes.NOP, optimized.get(1).getOpcode());
}

---

From source file:de.tuberlin.uebb.jbop.optimizer.controlflow.ConstantIfInlinerTest.java

License:Open Source License

/**
 * Tests that constantIfInliner is working correctly.
 * //w ww  . ja va2s  . c om
 * Input is
 * 
 * <pre>
 * if(2>1)
 * ...
 * else
 * ...
 * </pre>
 * 
 * @throws JBOPClassException
 *           the jBOP class exception
 */
@Test
public void testConstantIfInlinerIF_ICMPLEWithElseChooseElse() throws JBOPClassException {
    // INIT
    final LabelNode label = new LabelNode();
    final LabelNode label2 = new LabelNode();
    builder.addInsn(new InsnNode(Opcodes.ICONST_2)).//
            addInsn(new InsnNode(Opcodes.ICONST_1)).//
            addInsn(new JumpInsnNode(Opcodes.IF_ICMPLE, label)).//
            addInsn(new InsnNode(Opcodes.NOP)).//
            addInsn(new JumpInsnNode(Opcodes.GOTO, label2)).//
            addInsn(label).//
            addInsn(new InsnNode(Opcodes.NOP)).//
            addInsn(new InsnNode(Opcodes.NOP)).//
            addInsn(label2).//
            addInsn(new InsnNode(Opcodes.RETURN));

    // RUN
    assertEquals(10, method.instructions.size());
    final InsnList optimized = constantIfInliner.optimize(method.instructions, method);

    // ASSERT
    assertEquals(3, optimized.size());
    assertEquals(Opcodes.NOP, optimized.get(0).getOpcode());
    assertEquals(-1, optimized.get(1).getOpcode());
}

---

From source file:de.tuberlin.uebb.jbop.optimizer.loop.ForLoopUnrollerTest.java

License:Open Source License

/**
 * Tests that ForLoopUnroller is working correctly.
 * /* w  ww  .ja  v  a2  s.com*/
 * Used is a loop of the kind:
 * 
 * for(int i=0; i< 3; ++i)
 */
@Test
public void testForLoopUnrollerStrictForward() {
    // INIT
    final LabelNode label1 = new LabelNode();
    final LabelNode label2 = new LabelNode();
    builder.addInsn(new InsnNode(Opcodes.ICONST_0)).//
            addInsn(new VarInsnNode(Opcodes.ISTORE, 1)).//
            addInsn(new JumpInsnNode(Opcodes.GOTO, label1)).//
            addInsn(label2).//
            addInsn(new VarInsnNode(Opcodes.ILOAD, 1)).//
            addInsn(new VarInsnNode(Opcodes.ILOAD, 1)).//
            addInsn(new InsnNode(Opcodes.IADD)).//
            addInsn(new IincInsnNode(1, 1)).//
            addInsn(label1).//
            addInsn(NodeHelper.getInsnNodeFor(3)).//
            addInsn(new VarInsnNode(Opcodes.ILOAD, 1)).//
            addInsn(new JumpInsnNode(Opcodes.IF_ICMPLT, label2)).//
            addInsn(new InsnNode(Opcodes.RETURN));

    // RUN
    assertEquals(13, method.instructions.size());
    final InsnList optimized = optimizer.optimize(method.instructions, method);

    // ASSERT
    assertEquals(19, optimized.size());

    int node = 0;
    for (int i = 0; i < 3; ++i) {
        assertEquals(i, NodeHelper.getNumberValue(optimized.get(node)).intValue());
        node++;
        assertEquals(Opcodes.ISTORE, optimized.get(node).getOpcode());
        node++;
        assertEquals(Opcodes.ILOAD, optimized.get(node).getOpcode());
        node++;
        assertEquals(Opcodes.ILOAD, optimized.get(node).getOpcode());
        node++;
        assertEquals(Opcodes.IADD, optimized.get(node).getOpcode());
        node++;
        assertEquals(Opcodes.NOP, optimized.get(node).getOpcode()); // this is the SkipMarkNode
        node++;
    }
}

---

From source file:de.tuberlin.uebb.jbop.optimizer.loop.ForLoopUnrollerTest.java

License:Open Source License

/**
 * Tests that ForLoopUnroller is working correctly.
 * //  w  w  w.ja  va 2  s  . co m
 * Used is a loop of the kind:
 * 
 * for(int i=6; i> 0; i=i-2)
 */
@Test
public void testForLoopUnrollerBackward() {
    // INIT
    final LabelNode label1 = new LabelNode();
    final LabelNode label2 = new LabelNode();
    builder.addInsn(NodeHelper.getInsnNodeFor(6)).//
            addInsn(new VarInsnNode(Opcodes.ISTORE, 1)).//
            addInsn(new JumpInsnNode(Opcodes.GOTO, label1)).//
            addInsn(label2).//
            addInsn(new VarInsnNode(Opcodes.ILOAD, 1)).//
            addInsn(new VarInsnNode(Opcodes.ILOAD, 1)).//
            addInsn(new InsnNode(Opcodes.IADD)).//
            addInsn(new IincInsnNode(1, -2)).//
            addInsn(label1).//
            addInsn(new VarInsnNode(Opcodes.ILOAD, 1)).//
            addInsn(new JumpInsnNode(Opcodes.IFGT, label2)).//
            addInsn(new InsnNode(Opcodes.RETURN));

    // RUN
    assertEquals(12, method.instructions.size());
    final InsnList optimized = optimizer.optimize(method.instructions, method);

    // ASSERT
    assertEquals(19, optimized.size());

    int node = 0;
    for (int i = 6; i > 0; i -= 2) {
        assertEquals(i, NodeHelper.getNumberValue(optimized.get(node)).intValue());
        node++;
        assertEquals(Opcodes.ISTORE, optimized.get(node).getOpcode());
        node++;
        assertEquals(Opcodes.ILOAD, optimized.get(node).getOpcode());
        node++;
        assertEquals(Opcodes.ILOAD, optimized.get(node).getOpcode());
        node++;
        assertEquals(Opcodes.IADD, optimized.get(node).getOpcode());
        node++;
        assertEquals(Opcodes.NOP, optimized.get(node).getOpcode());
        node++;
    }
}

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