1 cananian 1.1.2.4 // TempBuilder.java, created Tue Nov 2 2:07:04 1999 by andyb
2 andyb 1.1.2.1 // Copyright (C) 1999 Andrew Berkheimer <andyb@mit.edu>
3 andyb 1.1.2.1 // Licensed under the terms of the GNU GPL; see COPYING for details
4 andyb 1.1.2.1 package harpoon.Backend.Sparc;
5 andyb 1.1.2.1
6 andyb 1.1.2.1 import harpoon.Temp.Temp;
7 andyb 1.1.2.1 import harpoon.Temp.TempFactory;
8 andyb 1.1.2.1 import harpoon.IR.Tree.Typed;
9 andyb 1.1.2.3 import harpoon.Util.Util;
10 andyb 1.1.2.1
11 andyb 1.1.2.1 import java.util.Set;
12 andyb 1.1.2.1 import java.util.HashSet;
13 andyb 1.1.2.3 import java.util.Map;
14 andyb 1.1.2.3 import java.util.HashMap;
15 andyb 1.1.2.1
16 andyb 1.1.2.1 /**
17 andyb 1.1.2.2 * <code>TempBuilder</code> for creating Temps for the Sparc architecture,
18 andyb 1.1.2.2 * and providing an interface for querying whether these Temps require
19 andyb 1.1.2.2 * two words of storage or use floating point registers.
20 andyb 1.1.2.1 *
21 andyb 1.1.2.1 * @author Andrew Berkheimer <andyb@mit.edu>
22 cananian 1.4 * @version $Id: TempBuilder.java,v 1.4 2002/04/10 03:03:51 cananian Exp $
23 andyb 1.1.2.1 */
24 andyb 1.1.2.1 public class TempBuilder extends harpoon.Backend.Generic.TempBuilder {
25 andyb 1.1.2.1 private Set twoWordTemps;
26 andyb 1.1.2.1 private Set floatingTemps;
27 andyb 1.1.2.3 private Map lowToHighMap;
28 andyb 1.1.2.1
29 andyb 1.1.2.1 public TempBuilder() {
30 andyb 1.1.2.3 twoWordTemps = new HashSet();
31 andyb 1.1.2.3 floatingTemps = new HashSet();
32 andyb 1.1.2.3 lowToHighMap = new HashMap();
33 andyb 1.1.2.1 }
34 andyb 1.1.2.1
35 andyb 1.1.2.1 public Temp makeTemp(Typed typed, TempFactory tf) {
36 andyb 1.1.2.3 Temp temp = new Temp(tf);
37 andyb 1.1.2.3
38 andyb 1.1.2.3 if (typed.isDoubleWord()) {
39 andyb 1.1.2.3 twoWordTemps.add(temp);
40 andyb 1.1.2.3 Temp high = new Temp(tf);
41 andyb 1.1.2.3 lowToHighMap.put(temp, high);
42 andyb 1.1.2.3 }
43 andyb 1.1.2.3 if (typed.isFloatingPoint()) {
44 andyb 1.1.2.3 floatingTemps.add(temp);
45 andyb 1.1.2.3 }
46 andyb 1.1.2.3 return temp;
47 andyb 1.1.2.1 }
48 andyb 1.1.2.1
49 andyb 1.1.2.1 // Sparc Backend specific functions
50 andyb 1.1.2.1 // Since the Temps are created here, I couldn't think of a better
51 andyb 1.1.2.3 // place to store and query this information - andyb
52 andyb 1.1.2.1
53 andyb 1.1.2.3 boolean isTwoWord(Temp temp) {
54 andyb 1.1.2.3 return twoWordTemps.contains(temp);
55 andyb 1.1.2.1 }
56 andyb 1.1.2.1
57 andyb 1.1.2.3 Temp getLow(Temp temp) {
58 andyb 1.1.2.3 return temp;
59 andyb 1.1.2.3 }
60 andyb 1.1.2.3
61 andyb 1.1.2.3 Temp getHigh(Temp temp) {
62 cananian 1.3.2.1 assert isTwoWord(temp);
63 andyb 1.1.2.3 return (Temp) lowToHighMap.get(temp);
64 andyb 1.1.2.3 }
65 andyb 1.1.2.3
66 andyb 1.1.2.3 boolean isFloatingPoint(Temp temp) {
67 andyb 1.1.2.3 return floatingTemps.contains(temp);
68 andyb 1.1.2.1 }
69 cananian 1.2 }