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comparison graal/GraalCompiler/src/com/sun/c1x/ir/Switch.java @ 2602:0c6564c254af

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new node layout: BlockBegin, BlockEnd -Dc1x.dot=regex for pdf output escape dot graph labels (<, >, &)
author Lukas Stadler <lukas.stadler@jku.at>
date Fri, 06 May 2011 10:25:37 +0200
parents 16b9a8b5ad39
children a0dd2b907806
comparison
equal deleted inserted replaced
2601:224e8b4007bd 2602:0c6564c254af
22 */ 22 */
23 package com.sun.c1x.ir; 23 package com.sun.c1x.ir;
24 24
25 import java.util.*; 25 import java.util.*;
26 26
27 import com.oracle.graal.graph.*;
27 import com.sun.c1x.value.*; 28 import com.sun.c1x.value.*;
28 import com.sun.cri.ci.*; 29 import com.sun.cri.ci.*;
29 30
30 /** 31 /**
31 * The {@code Switch} class is the base of both lookup and table switches. 32 * The {@code Switch} class is the base of both lookup and table switches.
32 *
33 * @author Ben L. Titzer
34 */ 33 */
35 public abstract class Switch extends BlockEnd { 34 public abstract class Switch extends BlockEnd {
36 35
37 Value value; 36 private static final int INPUT_COUNT = 1;
37 private static final int INPUT_VALUE = 0;
38
39 private static final int SUCCESSOR_COUNT = 0;
40
41 @Override
42 protected int inputCount() {
43 return super.inputCount() + INPUT_COUNT;
44 }
45
46 @Override
47 protected int successorCount() {
48 return super.successorCount() + SUCCESSOR_COUNT;
49 }
50
51 /**
52 * The instruction that provides the input value to this switch.
53 */
54 public Value value() {
55 return (Value) inputs().get(super.inputCount() + INPUT_VALUE);
56 }
57
58 public Value setValue(Value n) {
59 return (Value) inputs().set(super.inputCount() + INPUT_VALUE, n);
60 }
38 61
39 /** 62 /**
40 * Constructs a new Switch. 63 * Constructs a new Switch.
41 * @param value the instruction that provides the value to be switched over 64 * @param value the instruction that provides the value to be switched over
42 * @param successors the list of successors of this switch 65 * @param successors the list of successors of this switch
43 * @param stateBefore the state before the switch 66 * @param stateBefore the state before the switch
44 * @param isSafepoint {@code true} if this switch is a safepoint 67 * @param isSafepoint {@code true} if this switch is a safepoint
68 * @param graph
45 */ 69 */
46 public Switch(Value value, List<BlockBegin> successors, FrameState stateBefore, boolean isSafepoint) { 70 public Switch(Value value, List<BlockBegin> successors, FrameState stateBefore, boolean isSafepoint, int inputCount, int successorCount, Graph graph) {
47 super(CiKind.Illegal, stateBefore, isSafepoint, successors); 71 super(CiKind.Illegal, stateBefore, isSafepoint, successors, inputCount + INPUT_COUNT, successorCount + SUCCESSOR_COUNT, graph);
48 this.value = value; 72 setValue(value);
49 }
50
51 /**
52 * Gets the instruction that provides the input value to this switch.
53 * @return the instruction producing the input value
54 */
55 public Value value() {
56 return value;
57 } 73 }
58 74
59 /** 75 /**
60 * Gets the number of cases that this switch covers (excluding the default case). 76 * Gets the number of cases that this switch covers (excluding the default case).
61 * @return the number of cases 77 * @return the number of cases
62 */ 78 */
63 public int numberOfCases() { 79 public int numberOfCases() {
64 return successors.size() - 1; 80 return blockSuccessorCount() - 1;
65 } 81 }
66 82
67 /**
68 * Iterates over the inputs to this instruction.
69 * @param closure the closure to apply
70 */
71 @Override
72 public void inputValuesDo(ValueClosure closure) {
73 value = closure.apply(value);
74 }
75 } 83 }