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comparison graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/ArrayLengthNode.java @ 11682:976ebd1973d1

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The runtime might not always be able to report an array length
author Christian Wimmer <christian.wimmer@oracle.com>
date Tue, 17 Sep 2013 10:31:22 -0700
parents ae619d70bf4b
children 43bc62c78f77
comparison
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11681:39f98ffd187f 11682:976ebd1973d1
53 } 53 }
54 MetaAccessProvider runtime = tool.runtime(); 54 MetaAccessProvider runtime = tool.runtime();
55 if (runtime != null && array().isConstant() && !array().isNullConstant()) { 55 if (runtime != null && array().isConstant() && !array().isNullConstant()) {
56 Constant constantValue = array().asConstant(); 56 Constant constantValue = array().asConstant();
57 if (constantValue != null && constantValue.isNonNull()) { 57 if (constantValue != null && constantValue.isNonNull()) {
58 return ConstantNode.forInt(runtime.lookupArrayLength(constantValue), graph()); 58 Integer constantLength = runtime.lookupArrayLength(constantValue);
59 if (constantLength != null) {
60 return ConstantNode.forInt(constantLength, graph());
61 }
59 } 62 }
60 } 63 }
61 return this; 64 return this;
62 } 65 }
63 66