1 cananian 1.1.2.1 // POPER.java, created Wed Jan 20 23:39:35 1999 by cananian
2 cananian 1.1.2.1 // Copyright (C) 1999 C. Scott Ananian <cananian@alumni.princeton.edu>
3 cananian 1.1.2.1 // Licensed under the terms of the GNU GPL; see COPYING for details.
4 cananian 1.1.2.1 package harpoon.IR.LowQuad;
5 cananian 1.1.2.1
6 cananian 1.1.2.1 import harpoon.ClassFile.HClass;
7 cananian 1.1.2.1 import harpoon.ClassFile.HCodeElement;
8 cananian 1.1.2.1 import harpoon.Temp.Temp;
9 cananian 1.1.2.1 import harpoon.Temp.TempMap;
10 cananian 1.1.2.1 import harpoon.Util.Util;
11 cananian 1.1.2.1 /**
12 cananian 1.1.2.1 * <code>POPER</code> is an extended version of
13 cananian 1.1.2.2 * <code>harpoon.IR.Quads.OPER</code>, with new opcodes defined in
14 cananian 1.1.2.2 * <code>LQop</code>.
15 cananian 1.1.2.1 *
16 cananian 1.1.2.1 * @author C. Scott Ananian <cananian@alumni.princeton.edu>
17 cananian 1.4 * @version $Id: POPER.java,v 1.4 2002/04/10 03:04:57 cananian Exp $
18 cananian 1.1.2.1 */
19 cananian 1.1.2.1 public class POPER extends harpoon.IR.Quads.OPER {
20 cananian 1.1.2.1
21 cananian 1.1.2.1 /** Creates a <code>POPER</code>. */
22 cananian 1.1.2.1 public POPER(LowQuadFactory qf, HCodeElement source,
23 cananian 1.1.2.1 int opcode, Temp dst, Temp[] operands) {
24 cananian 1.1.2.1 super(qf, source, opcode, dst, operands);
25 cananian 1.1.2.1 if (kind()==LowQuadKind.POPER) // allow subclassing
26 cananian 1.3.2.1 assert LQop.isValid(opcode);
27 cananian 1.1.2.1 }
28 cananian 1.1.2.1 public int kind() { return LowQuadKind.POPER; }
29 cananian 1.1.2.1
30 cananian 1.1.2.1 public harpoon.IR.Quads.Quad rename(harpoon.IR.Quads.QuadFactory qf,
31 cananian 1.1.2.1 TempMap defMap, TempMap useMap) {
32 cananian 1.1.2.1 return new POPER((LowQuadFactory)qf, this, opcode,
33 cananian 1.1.2.1 map(defMap, dst), map(useMap, operands));
34 cananian 1.1.2.1 }
35 cananian 1.1.2.1
36 cananian 1.1.2.3 public void accept(harpoon.IR.Quads.QuadVisitor v) {
37 cananian 1.1.2.1 ((LowQuadVisitor)v).visit(this);
38 cananian 1.1.2.1 }
39 cananian 1.1.2.1
40 cananian 1.1.2.1 /** Returns a human-readable representation of this Quad. */
41 cananian 1.1.2.1 public String toString() {
42 cananian 1.1.2.1 StringBuffer sb = new StringBuffer(dst.toString());
43 cananian 1.1.2.1 sb.append(" = POPER " + LQop.toString(opcode) + "(");
44 cananian 1.1.2.1 for (int i=0; i<operands.length; i++) {
45 cananian 1.1.2.1 sb.append(operands[i].toString());
46 cananian 1.1.2.1 if (i<operands.length-1)
47 cananian 1.1.2.1 sb.append(", ");
48 cananian 1.1.2.1 }
49 cananian 1.1.2.1 sb.append(')');
50 cananian 1.1.2.1 return sb.toString();
51 cananian 1.1.2.1 }
52 cananian 1.1.2.1
53 cananian 1.1.2.1 // -------------------------------------------------------
54 cananian 1.1.2.1 // Evaluation functions.
55 cananian 1.1.2.1
56 cananian 1.1.2.1 /** Determines the result type of an <code>OPER</code>. */
57 cananian 1.1.2.1 public HClass evalType() {
58 cananian 1.1.2.1 return LQop.resultType(opcode);
59 cananian 1.1.2.1 }
60 cananian 1.1.2.1
61 cananian 1.1.2.1 /** Evaluates a constant value for the result of an <code>OPER</code>,
62 cananian 1.1.2.1 * given constant values for the operands. */
63 cananian 1.1.2.1 public Object evalValue(Object[] opvalues) {
64 cananian 1.1.2.1 return LQop.evaluate(opcode, opvalues);
65 cananian 1.1.2.1 }
66 cananian 1.2 }