1 /*
   2  * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 
  25 package org.graalvm.compiler.hotspot;
  26 
  27 import jdk.internal.vm.compiler.collections.EconomicMap;
  28 import jdk.internal.vm.compiler.collections.Equivalence;
  29 import org.graalvm.compiler.core.common.CompilationIdentifier;
  30 import org.graalvm.compiler.hotspot.stubs.Stub;
  31 import org.graalvm.compiler.lir.LIR;
  32 import org.graalvm.compiler.lir.LIRFrameState;
  33 import org.graalvm.compiler.lir.StandardOp.SaveRegistersOp;
  34 import org.graalvm.compiler.lir.framemap.FrameMapBuilder;
  35 import org.graalvm.compiler.lir.gen.LIRGenerationResult;
  36 
  37 import jdk.vm.ci.code.CallingConvention;
  38 import jdk.vm.ci.code.StackSlot;
  39 
  40 public class HotSpotLIRGenerationResult extends LIRGenerationResult {
  41 
  42     /**
  43      * The slot reserved for storing the original return address when a frame is marked for
  44      * deoptimization. The return address slot in the callee is overwritten with the address of a
  45      * deoptimization stub.
  46      */
  47     private StackSlot deoptimizationRescueSlot;
  48     protected final Object stub;
  49     private final boolean requiresReservedStackAccessCheck;
  50 
  51     private int maxInterpreterFrameSize;
  52 
  53     /**
  54      * Map from debug infos that need to be updated with callee save information to the operations
  55      * that provide the information.
  56      */
  57     private EconomicMap<LIRFrameState, SaveRegistersOp> calleeSaveInfo = EconomicMap.create(Equivalence.IDENTITY_WITH_SYSTEM_HASHCODE);
  58 
  59     public HotSpotLIRGenerationResult(CompilationIdentifier compilationId, LIR lir, FrameMapBuilder frameMapBuilder, CallingConvention callingConvention, Object stub,
  60                     boolean requiresReservedStackAccessCheck) {
  61         super(compilationId, lir, frameMapBuilder, callingConvention);
  62         this.stub = stub;
  63         this.requiresReservedStackAccessCheck = requiresReservedStackAccessCheck;
  64     }
  65 
  66     public EconomicMap<LIRFrameState, SaveRegistersOp> getCalleeSaveInfo() {
  67         return calleeSaveInfo;
  68     }
  69 
  70     public Stub getStub() {
  71         return (Stub) stub;
  72     }
  73 
  74     public StackSlot getDeoptimizationRescueSlot() {
  75         return deoptimizationRescueSlot;
  76     }
  77 
  78     public final void setDeoptimizationRescueSlot(StackSlot stackSlot) {
  79         this.deoptimizationRescueSlot = stackSlot;
  80     }
  81 
  82     public void setMaxInterpreterFrameSize(int maxInterpreterFrameSize) {
  83         this.maxInterpreterFrameSize = maxInterpreterFrameSize;
  84     }
  85 
  86     public int getMaxInterpreterFrameSize() {
  87         return maxInterpreterFrameSize;
  88     }
  89 
  90     public boolean requiresReservedStackAccessCheck() {
  91         return requiresReservedStackAccessCheck;
  92     }
  93 }