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view graal/com.oracle.graal.word/src/com/oracle/graal/word/phases/WordTypeVerificationPhase.java @ 7530:5e3d1a68664e
applied mx eclipseformat to all Java files
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 23 Jan 2013 16:34:57 +0100 |
parents | f9f40467383e |
children | 47467b2c3fc5 |
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/* * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.graal.word.phases; import java.lang.reflect.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.graph.*; import com.oracle.graal.graph.Node.NodeIntrinsic; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.calc.*; import com.oracle.graal.nodes.java.*; import com.oracle.graal.nodes.util.*; import com.oracle.graal.phases.*; import com.oracle.graal.word.*; import com.oracle.graal.word.Word.Operation; /** * Verifies invariants that must hold for snippet code above and beyond normal bytecode * verification. */ public class WordTypeVerificationPhase extends Phase { private final WordTypeRewriterPhase wordAccess; public WordTypeVerificationPhase(MetaAccessProvider metaAccess, Kind wordKind) { this.wordAccess = new WordTypeRewriterPhase(metaAccess, wordKind); } @Override protected void run(StructuredGraph graph) { for (ValueNode node : graph.getNodes().filter(ValueNode.class)) { for (Node usage : node.usages()) { if (usage instanceof AccessMonitorNode) { verify(!isWord(node), node, usage, "word value has no monitor"); } else if (usage instanceof LoadFieldNode) { verify(!isWord(node) || ((LoadFieldNode) usage).object() != node, node, usage, "cannot load from word value"); } else if (usage instanceof StoreFieldNode) { verify(!isWord(node) || ((StoreFieldNode) usage).object() != node, node, usage, "cannot store to word value"); } else if (usage instanceof CheckCastNode) { boolean expectWord = isWord(node); verify(isWord(node) == expectWord, node, usage, "word cannot be cast to object, and vice versa"); verify(isWord(((CheckCastNode) usage).type()) == expectWord, node, usage, "word cannot be cast to object, and vice versa"); } else if (usage instanceof LoadIndexedNode) { verify(!isWord(node) || ((LoadIndexedNode) usage).array() != node, node, usage, "cannot load from word value"); verify(!isWord(node) || ((LoadIndexedNode) usage).index() != node, node, usage, "cannot use word value as index"); } else if (usage instanceof StoreIndexedNode) { verify(!isWord(node) || ((StoreIndexedNode) usage).array() != node, node, usage, "cannot store to word value"); verify(!isWord(node) || ((StoreIndexedNode) usage).index() != node, node, usage, "cannot use word value as index"); verify(!isWord(node) || ((StoreIndexedNode) usage).value() != node, node, usage, "cannot store word value to array"); } else if (usage instanceof MethodCallTargetNode) { MethodCallTargetNode callTarget = (MethodCallTargetNode) usage; ResolvedJavaMethod method = callTarget.targetMethod(); if (method.getAnnotation(NodeIntrinsic.class) == null) { Invoke invoke = (Invoke) callTarget.usages().first(); NodeInputList<ValueNode> arguments = callTarget.arguments(); boolean isStatic = Modifier.isStatic(method.getModifiers()); int argc = 0; if (!isStatic) { ValueNode receiver = arguments.get(argc); if (receiver == node && isWord(node)) { ResolvedJavaMethod resolvedMethod = wordAccess.getWordImplType().resolveMethod(method); verify(resolvedMethod != null, node, invoke.node(), "cannot resolve method on Word class: " + MetaUtil.format("%H.%n(%P) %r", method)); Operation operation = resolvedMethod.getAnnotation(Word.Operation.class); verify(operation != null, node, invoke.node(), "cannot dispatch on word value to non @Operation annotated method " + resolvedMethod); } argc++; } Signature signature = method.getSignature(); for (int i = 0; i < signature.getParameterCount(false); i++) { ValueNode argument = arguments.get(argc); if (argument == node) { ResolvedJavaType type = (ResolvedJavaType) signature.getParameterType(i, method.getDeclaringClass()); verify(isWord(type) == isWord(argument), node, invoke.node(), "cannot pass word value to non-word parameter " + i + " or vice-versa"); } argc++; } } } else if (usage instanceof ObjectEqualsNode) { ObjectEqualsNode compare = (ObjectEqualsNode) usage; if (compare.x() == node || compare.y() == node) { verify(isWord(compare.x()) == isWord(compare.y()), node, compare.usages().first(), "cannot mixed word and non-word type in use of '==' or '!='"); } } else if (usage instanceof ArrayLengthNode) { verify(!isWord(node) || ((ArrayLengthNode) usage).array() != node, node, usage, "cannot get array length from word value"); } else if (usage instanceof PhiNode) { if (!(node instanceof MergeNode)) { PhiNode phi = (PhiNode) usage; for (ValueNode input : phi.values()) { verify(isWord(node) == isWord(input), node, input, "cannot merge word and non-word values"); } } } } } } private boolean isWord(ValueNode node) { return wordAccess.isWord(node); } private boolean isWord(ResolvedJavaType type) { return wordAccess.isWord(type); } private static void verify(boolean condition, Node node, Node usage, String message) { if (!condition) { error(node, usage, message); } } private static void error(Node node, Node usage, String message) { throw new GraalInternalError(String.format("Snippet verification error: %s" + "%n node: %s (%s)" + "%n usage: %s (%s)", message, node, sourceLocation(node), usage, sourceLocation(usage))); } private static String sourceLocation(Node n) { if (n instanceof PhiNode) { StringBuilder buf = new StringBuilder(); for (Node usage : n.usages()) { String loc = sourceLocation(usage); if (!loc.equals("<unknown>")) { if (buf.length() != 0) { buf.append(", "); } buf.append(loc); } } return buf.toString(); } else { String loc = GraphUtil.approxSourceLocation(n); return loc == null ? "<unknown>" : loc; } } }