1 cananian 1.1.2.28 // LowQuadSSA.java, created Wed May 31 16:18:58 2000 by cananian
2 cananian 1.1.2.28 // Copyright (C) 2000 C. Scott Ananian <cananian@alumni.princeton.edu>
3 cananian 1.1.2.16 // Licensed under the terms of the GNU GPL; see COPYING for details.
4 cananian 1.1.2.17 package harpoon.IR.LowQuad;
5 duncan 1.1.2.1
6 duncan 1.1.2.7 import harpoon.ClassFile.HClass;
7 duncan 1.1.2.1 import harpoon.ClassFile.HCode;
8 cananian 1.1.2.29 import harpoon.ClassFile.HCodeAndMaps;
9 cananian 1.1.2.5 import harpoon.ClassFile.HCodeElement;
10 duncan 1.1.2.1 import harpoon.ClassFile.HCodeFactory;
11 duncan 1.1.2.1 import harpoon.ClassFile.HMethod;
12 cananian 1.1.2.28 import harpoon.IR.Quads.SSIToSSA;
13 duncan 1.1.2.1 import harpoon.IR.Quads.Quad;
14 cananian 1.1.2.21 import harpoon.IR.Quads.QuadSSI;
15 duncan 1.1.2.1 /**
16 cananian 1.1.2.28 * The <code>LowQuadSSA</code> codeview exposes a lowquad based
17 cananian 1.1.2.28 * representation in SSA form.
18 cananian 1.1.2.28 *
19 cananian 1.1.2.28 * @author C. Scott Ananian <cananian@alumni.princeton.edu>
20 cananian 1.3 * @version $Id: LowQuadSSA.java,v 1.3 2003/03/10 22:19:15 cananian Exp $
21 duncan 1.1.2.1 */
22 cananian 1.1.2.28 public class LowQuadSSA extends Code /*which extends harpoon.IR.Quads.Code*/ {
23 duncan 1.1.2.18 /** The name of this code view. */
24 cananian 1.1.2.28 public static final String codename = "low-quad-ssa";
25 cananian 1.1.2.28
26 cananian 1.1.2.28 /** Creates a <code>LowQuadSSA</code> object from a
27 cananian 1.1.2.28 * <code>LowQuadSSI</code> object. */
28 cananian 1.1.2.28 public LowQuadSSA(final LowQuadSSI code) {
29 cananian 1.1.2.28 super(code.getMethod(), null);
30 cananian 1.1.2.28 SSIToSSA ssi2ssa = new SSIToSSA(code, qf);
31 cananian 1.1.2.28 quads = ssi2ssa.rootQuad;
32 cananian 1.1.2.28 setDerivation(ssi2ssa.derivation);
33 cananian 1.1.2.28 setAllocationInformation(ssi2ssa.allocInfo);
34 duncan 1.1.2.1 }
35 duncan 1.1.2.4
36 duncan 1.1.2.18 /**
37 duncan 1.1.2.18 * Create a new code object given a quadruple representation of the
38 duncan 1.1.2.18 * method instructions.
39 duncan 1.1.2.18 */
40 duncan 1.1.2.18 protected LowQuadSSA(HMethod method, Quad quads) {
41 cananian 1.1.2.28 super(method, quads);
42 cananian 1.1.2.28 setDerivation(null);
43 cananian 1.1.2.28 setAllocationInformation(null);
44 duncan 1.1.2.18 }
45 duncan 1.1.2.18
46 duncan 1.1.2.18 /**
47 duncan 1.1.2.18 * Clone this code representation. The clone has its own copy of the
48 duncan 1.1.2.18 * quad graph.
49 cananian 1.1.2.28 * <p><b>WARNING: does not preserve derivation or allocation info.</b>
50 duncan 1.1.2.18 */
51 cananian 1.3 public HCodeAndMaps<Quad> clone(HMethod newMethod) {
52 cananian 1.1.2.29 return cloneHelper(new LowQuadSSA(newMethod, null));
53 duncan 1.1.2.18 }
54 duncan 1.1.2.18
55 duncan 1.1.2.18 /**
56 duncan 1.1.2.18 * Return the name of this code view.
57 duncan 1.1.2.18 * @return the string <code>"low-quad-ssa"</code>
58 duncan 1.1.2.18 */
59 duncan 1.1.2.18 public String getName() { return codename; }
60 duncan 1.1.2.18
61 duncan 1.1.2.18 /**
62 duncan 1.1.2.18 * Return a code factory for <code>LowQuadSSA</code>, given a
63 cananian 1.1.2.28 * code factory for <code>LowQuadSSI</code>.
64 duncan 1.1.2.18 * <BR> <B>effects:</B> if <code>hcf</code> is a code factory for
65 cananian 1.1.2.28 * <code>LowQuadSSI</code>, then creates and returns a code
66 duncan 1.1.2.18 * factory for <code>LowQuadSSA</code>. Else passes
67 duncan 1.1.2.18 * <code>hcf</code> to
68 cananian 1.1.2.28 * <code>LowQuadSSI.codeFactory()</code>, and reattempts to
69 duncan 1.1.2.18 * create a code factory for <code>LowQuadSSA</code> from the
70 cananian 1.1.2.28 * code factory returned by <code>LowQuadSSI</code>.
71 cananian 1.1.2.28 * @see LowQuadSSI#codeFactory(HCodeFactory)
72 duncan 1.1.2.18 */
73 duncan 1.1.2.18 public static HCodeFactory codeFactory(final HCodeFactory hcf) {
74 cananian 1.1.2.30 if (hcf.getCodeName().equals(codename)) return hcf;
75 cananian 1.1.2.28 if (hcf.getCodeName().equals(LowQuadSSI.codename)) {
76 cananian 1.1.2.28 return new harpoon.ClassFile.SerializableCodeFactory() {
77 cananian 1.1.2.28 public HCode convert(HMethod m) {
78 cananian 1.1.2.28 HCode c = hcf.convert(m);
79 cananian 1.1.2.28 return (c==null) ? null : new LowQuadSSA((LowQuadSSI)c);
80 cananian 1.1.2.28 }
81 cananian 1.1.2.28 public void clear(HMethod m) { hcf.clear(m); }
82 cananian 1.1.2.28 public String getCodeName() { return codename; }
83 cananian 1.1.2.28 };
84 cananian 1.1.2.28 } else {
85 cananian 1.1.2.28 return codeFactory(LowQuadSSI.codeFactory(hcf));
86 cananian 1.1.2.28 }
87 duncan 1.1.2.1 }
88 duncan 1.1.2.1
89 duncan 1.1.2.18 /**
90 cananian 1.1.2.28 * Return a code factory for <code>LowQuadSSA</code>, using the default
91 cananian 1.1.2.28 * code factory for <code>LowQuadSSI</code>
92 duncan 1.1.2.18 */
93 duncan 1.1.2.18 public static HCodeFactory codeFactory() {
94 cananian 1.1.2.28 return codeFactory(LowQuadSSI.codeFactory());
95 duncan 1.1.2.18 }
96 cananian 1.2 }