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comparison graal/GraalCompiler/src/com/sun/c1x/ir/Value.java @ 2801:2af109bec0c0

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Make block contains a list of nodes instead a list of instructions.
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Fri, 27 May 2011 15:11:34 +0200
parents d3fc4fe063bf
children f57594d3cd78
comparison
equal deleted inserted replaced
2800:e3a0630a1dab 2801:2af109bec0c0
54 */ 54 */
55 private int flags; 55 private int flags;
56 56
57 protected CiValue operand = CiValue.IllegalValue; 57 protected CiValue operand = CiValue.IllegalValue;
58 58
59 /**
60 * Used by {@link InstructionSubstituter}.
61 */
62 public Value subst;
63
64 public abstract Merge block(); 59 public abstract Merge block();
65 60
66 /** 61 /**
67 * Creates a new value with the specified kind. 62 * Creates a new value with the specified kind.
68 * @param kind the type of this value 63 * @param kind the type of this value
85 } 80 }
86 81
87 @Override 82 @Override
88 protected Object clone() throws CloneNotSupportedException { 83 protected Object clone() throws CloneNotSupportedException {
89 throw new CloneNotSupportedException(); 84 throw new CloneNotSupportedException();
90 }
91
92 /////////////////
93
94 /**
95 * Gets the instruction that should be substituted for this one. Note that this
96 * method is recursive; if the substituted instruction has a substitution, then
97 * the final substituted instruction will be returned. If there is no substitution
98 * for this instruction, {@code this} will be returned.
99 * @return the substitution for this instruction
100 */
101 public final Value subst() {
102 if (subst == null) {
103 return this;
104 }
105 return subst.subst();
106 }
107
108 /**
109 * Checks whether this instruction has a substitute.
110 * @return {@code true} if this instruction has a substitution.
111 */
112 public final boolean hasSubst() {
113 return subst != null;
114 } 85 }
115 86
116 /** 87 /**
117 * Check whether this instruction has the specified flag set. 88 * Check whether this instruction has the specified flag set.
118 * @param flag the flag to test 89 * @param flag the flag to test