Mercurial > hg > truffle
view graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/phases/InsertStateAfterPlaceholderPhase.java @ 5672:272ad540c464
Canoncialize < to |<| for positive values
Canoncialize IndexedLocation even for long constant index if the final displacement fits in an int
remove PlaceHolderNodes when they don't hold a state
author | Gilles Duboscq <duboscq@ssw.jku.at> |
---|---|
date | Thu, 21 Jun 2012 16:29:14 +0200 |
parents | a9b615da0cba |
children |
line wrap: on
line source
/* * Copyright (c) 2012, 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.compiler.phases; import com.oracle.graal.graph.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; public class InsertStateAfterPlaceholderPhase extends Phase { private static class PlaceholderNode extends AbstractStateSplit implements StateSplit, Node.IterableNodeType, LIRLowerable, Canonicalizable { public PlaceholderNode() { super(StampFactory.forVoid()); } @Override public void generate(LIRGeneratorTool gen) { // nothing to do } @Override public boolean hasSideEffect() { return false; } @Override public ValueNode canonical(CanonicalizerTool tool) { if (stateAfter() == null) { return null; } return this; } } @Override protected void run(StructuredGraph graph) { for (ReturnNode ret : graph.getNodes(ReturnNode.class)) { PlaceholderNode p = graph.add(new PlaceholderNode()); p.setStateAfter(graph.add(new FrameState(FrameState.AFTER_BCI))); graph.addBeforeFixed(ret, p); } } }