Mercurial > hg > graal-jvmci-8
view graal/GraalCompiler/src/com/sun/c1x/graph/ProfileInformationStub.java @ 2675:bcd20d26d52d
Refactoring of BlockMap so that it doesn't create BlockBegin objects, but maintains its own Block data structure
author | Christian.Wimmer@Oracle.com |
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date | Fri, 13 May 2011 13:59:32 -0700 |
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/* * Copyright (c) 2011, 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.sun.c1x.graph; import static com.sun.cri.bytecode.Bytecodes.*; import com.sun.c1x.*; import com.sun.cri.bytecode.*; import com.sun.cri.ri.*; /** * A temporary placeholder to bring in profile information to Graal, until we have a definitive interface. * That allows us to mark dependencies in code that will need fixup in the future. * * TODO this class and the signature of its methods i temporary */ public class ProfileInformationStub { public static boolean trappedFrequently(RiMethod method, int bci) { // TODO: Currently, the runtime system does not support deoptimization when a call trhows an exception, // so mark is a trapping so that explicit exception handler edges are generated. switch (Bytes.beU1(method.code(), bci)) { case INVOKESTATIC: case INVOKESPECIAL: case INVOKEVIRTUAL: case INVOKEINTERFACE: { return true; } } if (C1XOptions.StressImplicitExceptions && canTrap(method.code()[bci])) { return true; } return false; } }