Mercurial > hg > truffle
comparison agent/src/share/classes/sun/jvm/hotspot/oops/BranchData.java @ 3939:f6f3bb0ee072
7088955: add C2 IR support to the SA
Reviewed-by: kvn
author | never |
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date | Sun, 11 Sep 2011 14:48:24 -0700 |
parents | |
children | 4bec1b1f7b33 |
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3938:e6b1331a51d2 | 3939:f6f3bb0ee072 |
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1 /* | |
2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. | |
3 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. | |
4 * | |
5 * | |
6 * | |
7 * | |
8 * | |
9 * | |
10 * | |
11 * | |
12 * | |
13 * | |
14 * | |
15 * | |
16 * | |
17 * | |
18 * | |
19 * | |
20 * | |
21 * | |
22 * | |
23 */ | |
24 | |
25 package sun.jvm.hotspot.oops; | |
26 | |
27 import java.io.*; | |
28 import java.util.*; | |
29 import sun.jvm.hotspot.debugger.*; | |
30 import sun.jvm.hotspot.runtime.*; | |
31 import sun.jvm.hotspot.types.*; | |
32 import sun.jvm.hotspot.utilities.*; | |
33 | |
34 // BranchData | |
35 // | |
36 // A BranchData is used to access profiling data for a two-way branch. | |
37 // It consists of taken and notTaken counts as well as a data displacement | |
38 // for the taken case. | |
39 public class BranchData extends JumpData { | |
40 | |
41 static final int notTakenOffSet = jumpCellCount; | |
42 static final int branchCellCount = notTakenOffSet + 1; | |
43 | |
44 public BranchData(DataLayout layout) { | |
45 super(layout); | |
46 //assert(layout.tag() == DataLayout.branchDataTag, "wrong type"); | |
47 } | |
48 | |
49 static int staticCellCount() { | |
50 return branchCellCount; | |
51 } | |
52 | |
53 public int cellCount() { | |
54 return staticCellCount(); | |
55 } | |
56 | |
57 // Direct accessor | |
58 int notTaken() { | |
59 return uintAt(notTakenOffSet); | |
60 } | |
61 | |
62 // Code generation support | |
63 static int notTakenOffset() { | |
64 return cellOffset(notTakenOffSet); | |
65 } | |
66 static int branchDataSize() { | |
67 return cellOffset(branchCellCount); | |
68 } | |
69 | |
70 public void printDataOn(PrintStream st) { | |
71 printShared(st, "BranchData"); | |
72 st.println("taken(" + taken() + ") displacement(" + displacement() + ")"); | |
73 tab(st); | |
74 st.println("not taken(" + notTaken() + ")"); | |
75 } | |
76 } |