Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/SLException.java @ 21359:c4b87ad2c4c8
Improve code generation for zero extend on AMD64.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Wed, 13 May 2015 11:53:17 +0200 |
parents | 158c9ba66e45 |
children |
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/* * Copyright (c) 2014, 2014, 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.truffle.sl; import java.util.*; import com.oracle.truffle.api.*; import com.oracle.truffle.api.frame.*; import com.oracle.truffle.api.nodes.*; import com.oracle.truffle.api.source.*; import com.oracle.truffle.sl.nodes.*; /** * SL does not need a sophisticated error checking and reporting mechanism, so all unexpected * conditions just abort execution. This exception class is used when we abort from within the SL * implementation. */ public class SLException extends RuntimeException { private static final long serialVersionUID = -6799734410727348507L; public SLException(String message) { super(message); initCause(new Throwable("Java stack trace")); } @Override public synchronized Throwable fillInStackTrace() { return fillInSLStackTrace(this); } /** * Uses the Truffle API to iterate the stack frames and to create and set Java * {@link StackTraceElement} elements based on the source sections of the call nodes on the * stack. */ static Throwable fillInSLStackTrace(Throwable t) { final List<StackTraceElement> stackTrace = new ArrayList<>(); Truffle.getRuntime().iterateFrames(new FrameInstanceVisitor<Void>() { public Void visitFrame(FrameInstance frame) { Node callNode = frame.getCallNode(); if (callNode == null) { return null; } RootNode root = callNode.getRootNode(); /* * There should be no RootNodes other than SLRootNodes on the stack. Just for the * case if this would change. */ String methodName = "$unknownFunction"; if (root instanceof SLRootNode) { methodName = ((SLRootNode) root).getName(); } SourceSection sourceSection = callNode.getEncapsulatingSourceSection(); Source source = sourceSection != null ? sourceSection.getSource() : null; String sourceName = source != null ? source.getName() : null; int lineNumber; try { lineNumber = sourceSection != null ? sourceSection.getLineLocation().getLineNumber() : -1; } catch (UnsupportedOperationException e) { /* * SourceSection#getLineLocation() may throw an UnsupportedOperationException. */ lineNumber = -1; } stackTrace.add(new StackTraceElement("SL", methodName, sourceName, lineNumber)); return null; } }); t.setStackTrace(stackTrace.toArray(new StackTraceElement[stackTrace.size()])); return t; } }