1 /*
   2  * Copyright (c) 2011, 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 package org.graalvm.compiler.nodes;
  24 
  25 import org.graalvm.compiler.graph.Node;
  26 import org.graalvm.compiler.nodes.CallTargetNode.InvokeKind;
  27 import org.graalvm.compiler.nodes.extended.GuardedNode;
  28 import org.graalvm.compiler.nodes.java.MethodCallTargetNode;
  29 import org.graalvm.compiler.nodes.spi.Lowerable;
  30 import org.graalvm.compiler.nodes.type.StampTool;
  31 
  32 import jdk.vm.ci.meta.ResolvedJavaMethod;
  33 import jdk.vm.ci.meta.ResolvedJavaType;
  34 
  35 public interface Invoke extends StateSplit, Lowerable, DeoptimizingNode.DeoptDuring, GuardedNode, FixedNodeInterface {
  36 
  37     FixedNode next();
  38 
  39     void setNext(FixedNode x);
  40 
  41     CallTargetNode callTarget();
  42 
  43     int bci();
  44 
  45     Node predecessor();
  46 
  47     ValueNode classInit();
  48 
  49     void setClassInit(ValueNode node);
  50 
  51     void intrinsify(Node node);
  52 
  53     boolean useForInlining();
  54 
  55     void setUseForInlining(boolean value);
  56 
  57     /**
  58      * True if this invocation is almost certainly polymorphic, false when in doubt.
  59      */
  60     boolean isPolymorphic();
  61 
  62     void setPolymorphic(boolean value);
  63 
  64     /**
  65      * Returns the {@linkplain ResolvedJavaMethod method} from which this invoke is executed. This
  66      * is the caller method and in the case of inlining may be different from the method of the
  67      * graph this node is in.
  68      *
  69      * @return the method from which this invoke is executed.
  70      */
  71     default ResolvedJavaMethod getContextMethod() {
  72         FrameState state = stateAfter();
  73         if (state == null) {
  74             state = stateDuring();
  75         }
  76         return state.getMethod();
  77     }
  78 
  79     /**
  80      * Returns the {@linkplain ResolvedJavaType type} from which this invoke is executed. This is
  81      * the declaring type of the caller method.
  82      *
  83      * @return the type from which this invoke is executed.
  84      */
  85     default ResolvedJavaType getContextType() {
  86         ResolvedJavaMethod contextMethod = getContextMethod();
  87         if (contextMethod == null) {
  88             return null;
  89         }
  90         return contextMethod.getDeclaringClass();
  91     }
  92 
  93     @Override
  94     default void computeStateDuring(FrameState stateAfter) {
  95         FrameState newStateDuring = stateAfter.duplicateModifiedDuringCall(bci(), asNode().getStackKind());
  96         setStateDuring(newStateDuring);
  97     }
  98 
  99     default ValueNode getReceiver() {
 100         assert getInvokeKind().hasReceiver();
 101         return callTarget().arguments().get(0);
 102     }
 103 
 104     default ResolvedJavaType getReceiverType() {
 105         ResolvedJavaType receiverType = StampTool.typeOrNull(getReceiver());
 106         if (receiverType == null) {
 107             receiverType = ((MethodCallTargetNode) callTarget()).targetMethod().getDeclaringClass();
 108         }
 109         return receiverType;
 110     }
 111 
 112     default InvokeKind getInvokeKind() {
 113         return callTarget().invokeKind();
 114     }
 115 }