Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotLoadFieldPlugin.java @ 20003:422e60a2f4b9
Implement dynamic instruction counters on assembly level
author | Stefan Anzinger <stefan.anzinger@oracle.com> |
---|---|
date | Mon, 23 Mar 2015 15:58:36 +0100 |
parents | 87736c089259 |
children | 2d51a92a301a |
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/* * Copyright (c) 2015, 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.hotspot.meta; import static com.oracle.graal.compiler.common.GraalOptions.*; import static com.oracle.graal.java.AbstractBytecodeParser.Options.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.api.replacements.*; import com.oracle.graal.graphbuilderconf.*; import com.oracle.graal.nodes.*; public final class HotSpotLoadFieldPlugin implements LoadFieldPlugin { private final MetaAccessProvider metaAccess; private final ConstantReflectionProvider constantReflection; public HotSpotLoadFieldPlugin(MetaAccessProvider metaAccess, ConstantReflectionProvider constantReflection) { this.metaAccess = metaAccess; this.constantReflection = constantReflection; } static final ThreadLocal<Boolean> FieldReadEnabledInImmutableCode = new ThreadLocal<>(); public boolean apply(GraphBuilderContext b, ValueNode receiver, ResolvedJavaField field) { if ((InlineDuringParsing.getValue() && !ImmutableCode.getValue()) || b.parsingReplacement()) { if (receiver.isConstant()) { JavaConstant asJavaConstant = receiver.asJavaConstant(); return tryReadField(b, field, asJavaConstant); } } return false; } private boolean tryReadField(GraphBuilderContext b, ResolvedJavaField field, JavaConstant receiver) { if (ImmutableCode.getValue()) { FieldReadEnabledInImmutableCode.set(Boolean.TRUE); } try { return tryConstantFold(b, metaAccess, constantReflection, field, receiver); } finally { if (ImmutableCode.getValue()) { FieldReadEnabledInImmutableCode.set(null); } } } public boolean apply(GraphBuilderContext b, ResolvedJavaField staticField) { if ((InlineDuringParsing.getValue() && !ImmutableCode.getValue()) || b.parsingReplacement()) { // Javac does not allow use of "$assertionsDisabled" for a field name but // Eclipse does in which case a suffix is added to the generated field. if (b.parsingReplacement() && staticField.isSynthetic() && staticField.getName().startsWith("$assertionsDisabled")) { // For methods called indirectly from intrinsics, we (silently) disable // assertions so that the parser won't see calls to the AssertionError // constructor (all Invokes must be removed from intrinsics - see // HotSpotInlineInvokePlugin.notifyOfNoninlinedInvoke). Direct use of // assertions in intrinsics is forbidden. assert b.getMethod().getAnnotation(MethodSubstitution.class) == null : "cannot use assertions in " + b.getMethod().format("%H.%n(%p)"); ConstantNode trueNode = b.append(ConstantNode.forBoolean(true)); b.push(trueNode.getKind().getStackKind(), trueNode); return true; } return tryReadField(b, staticField, null); } return false; } }