java/12 : jdk.internal.vm.compiler/org/graalvm/compiler/phases/common/InsertGuardFencesPhase.class

InsertGuardFencesPhase
https://openjdk.java.net/
GPLv2 + Classpath Exception
public class org.graalvm.compiler.phases.common.InsertGuardFencesPhase extends org.graalvm.compiler.phases.Phase
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.graalvm.compiler.phases.common.InsertGuardFencesPhase
  super_class: org.graalvm.compiler.phases.Phase
{
  public static final org.graalvm.compiler.core.common.type.IntegerStamp POSITIVE_ARRAY_INDEX_STAMP;
    descriptor: Lorg/graalvm/compiler/core/common/type/IntegerStamp;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  static final boolean $assertionsDisabled;
    descriptor: Z
    flags: (0x1018) ACC_STATIC, ACC_FINAL, ACC_SYNTHETIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=5, locals=0, args_size=0
         0: .line 58
            ldc Lorg/graalvm/compiler/phases/common/InsertGuardFencesPhase;
            invokevirtual java.lang.Class.desiredAssertionStatus:()Z
            ifne 1
            iconst_1
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_0
      StackMap locals:
      StackMap stack: int
         2: putstatic org.graalvm.compiler.phases.common.InsertGuardFencesPhase.$assertionsDisabled:Z
         3: .line 106
            bipush 32
            lconst_0
            ldc 2147483646
            invokestatic org.graalvm.compiler.core.common.type.StampFactory.forInteger:(IJJ)Lorg/graalvm/compiler/core/common/type/IntegerStamp;
            putstatic org.graalvm.compiler.phases.common.InsertGuardFencesPhase.POSITIVE_ARRAY_INDEX_STAMP:Lorg/graalvm/compiler/core/common/type/IntegerStamp;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.graalvm.compiler.phases.common.InsertGuardFencesPhase this
         0: .line 58
            aload 0 /* this */
            invokespecial org.graalvm.compiler.phases.Phase.<init>:()V
            return
        end local 0 // org.graalvm.compiler.phases.common.InsertGuardFencesPhase this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/compiler/phases/common/InsertGuardFencesPhase;

  protected void run(org.graalvm.compiler.nodes.StructuredGraph);
    descriptor: (Lorg/graalvm/compiler/nodes/StructuredGraph;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=5, locals=4, args_size=2
        start local 0 // org.graalvm.compiler.phases.common.InsertGuardFencesPhase this
        start local 1 // org.graalvm.compiler.nodes.StructuredGraph graph
         0: .line 61
            aload 1 /* graph */
            getstatic org.graalvm.compiler.nodes.AbstractBeginNode.TYPE:Lorg/graalvm/compiler/graph/NodeClass;
            invokevirtual org.graalvm.compiler.nodes.StructuredGraph.getNodes:(Lorg/graalvm/compiler/graph/NodeClass;)Lorg/graalvm/compiler/graph/iterators/NodeIterable;
            invokeinterface org.graalvm.compiler.graph.iterators.NodeIterable.iterator:()Ljava/util/Iterator;
            astore 3
            goto 18
      StackMap locals: org.graalvm.compiler.phases.common.InsertGuardFencesPhase org.graalvm.compiler.nodes.StructuredGraph top java.util.Iterator
      StackMap stack:
         1: aload 3
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast org.graalvm.compiler.nodes.AbstractBeginNode
            astore 2 /* beginNode */
        start local 2 // org.graalvm.compiler.nodes.AbstractBeginNode beginNode
         2: .line 62
            aload 2 /* beginNode */
            invokestatic org.graalvm.compiler.phases.common.InsertGuardFencesPhase.hasGuardUsages:(Lorg/graalvm/compiler/graph/Node;)Z
            ifeq 17
         3: .line 63
            getstatic org.graalvm.compiler.core.common.SpeculativeExecutionAttacksMitigations$Options.MitigateSpeculativeExecutionAttacks:Lorg/graalvm/compiler/options/EnumOptionKey;
            aload 1 /* graph */
            invokevirtual org.graalvm.compiler.nodes.StructuredGraph.getOptions:()Lorg/graalvm/compiler/options/OptionValues;
            invokevirtual org.graalvm.compiler.options.EnumOptionKey.getValue:(Lorg/graalvm/compiler/options/OptionValues;)Ljava/lang/Object;
            getstatic org.graalvm.compiler.core.common.SpeculativeExecutionAttacksMitigations.NonDeoptGuardTargets:Lorg/graalvm/compiler/core/common/SpeculativeExecutionAttacksMitigations;
            if_acmpne 7
         4: .line 64
            aload 2 /* beginNode */
            invokestatic org.graalvm.compiler.phases.common.InsertGuardFencesPhase.isDeoptGuard:(Lorg/graalvm/compiler/nodes/AbstractBeginNode;)Z
            ifeq 7
         5: .line 65
            aload 1 /* graph */
            invokevirtual org.graalvm.compiler.nodes.StructuredGraph.getDebug:()Lorg/graalvm/compiler/debug/DebugContext;
            iconst_3
            ldc "Skipping deoptimizing guard speculation fence at %s"
            aload 2 /* beginNode */
            invokevirtual org.graalvm.compiler.debug.DebugContext.log:(ILjava/lang/String;Ljava/lang/Object;)V
         6: .line 66
            goto 18
         7: .line 69
      StackMap locals: org.graalvm.compiler.phases.common.InsertGuardFencesPhase org.graalvm.compiler.nodes.StructuredGraph org.graalvm.compiler.nodes.AbstractBeginNode java.util.Iterator
      StackMap stack:
            getstatic org.graalvm.compiler.core.common.SpeculativeExecutionAttacksMitigations$Options.UseIndexMasking:Lorg/graalvm/compiler/options/OptionKey;
            aload 1 /* graph */
            invokevirtual org.graalvm.compiler.nodes.StructuredGraph.getOptions:()Lorg/graalvm/compiler/options/OptionValues;
            invokevirtual org.graalvm.compiler.options.OptionKey.getValue:(Lorg/graalvm/compiler/options/OptionValues;)Ljava/lang/Object;
            checkcast java.lang.Boolean
            invokevirtual java.lang.Boolean.booleanValue:()Z
            ifeq 11
         8: .line 70
            aload 2 /* beginNode */
            invokestatic org.graalvm.compiler.phases.common.InsertGuardFencesPhase.isBoundsCheckGuard:(Lorg/graalvm/compiler/nodes/AbstractBeginNode;)Z
            ifeq 11
         9: .line 71
            aload 1 /* graph */
            invokevirtual org.graalvm.compiler.nodes.StructuredGraph.getDebug:()Lorg/graalvm/compiler/debug/DebugContext;
            iconst_3
            ldc "Skipping bounds-check speculation fence at %s"
            aload 2 /* beginNode */
            invokevirtual org.graalvm.compiler.debug.DebugContext.log:(ILjava/lang/String;Ljava/lang/Object;)V
        10: .line 72
            goto 18
        11: .line 75
      StackMap locals:
      StackMap stack:
            aload 1 /* graph */
            invokevirtual org.graalvm.compiler.nodes.StructuredGraph.getDebug:()Lorg/graalvm/compiler/debug/DebugContext;
            iconst_4
            invokevirtual org.graalvm.compiler.debug.DebugContext.isLogEnabled:(I)Z
            ifeq 14
        12: .line 76
            aload 1 /* graph */
            invokevirtual org.graalvm.compiler.nodes.StructuredGraph.getDebug:()Lorg/graalvm/compiler/debug/DebugContext;
            iconst_4
            ldc "Adding speculation fence for %s at %s"
            aload 2 /* beginNode */
            invokestatic org.graalvm.compiler.phases.common.InsertGuardFencesPhase.guardUsages:(Lorg/graalvm/compiler/graph/Node;)Ljava/util/List;
            aload 2 /* beginNode */
            invokevirtual org.graalvm.compiler.debug.DebugContext.log:(ILjava/lang/String;Ljava/lang/Object;Ljava/lang/Object;)V
        13: .line 77
            goto 15
        14: .line 78
      StackMap locals:
      StackMap stack:
            aload 1 /* graph */
            invokevirtual org.graalvm.compiler.nodes.StructuredGraph.getDebug:()Lorg/graalvm/compiler/debug/DebugContext;
            iconst_3
            ldc "Adding speculation fence at %s"
            aload 2 /* beginNode */
            invokevirtual org.graalvm.compiler.debug.DebugContext.log:(ILjava/lang/String;Ljava/lang/Object;)V
        15: .line 80
      StackMap locals:
      StackMap stack:
            aload 2 /* beginNode */
            invokevirtual org.graalvm.compiler.nodes.AbstractBeginNode.setWithSpeculationFence:()V
        16: .line 81
            goto 18
        17: .line 82
      StackMap locals:
      StackMap stack:
            aload 1 /* graph */
            invokevirtual org.graalvm.compiler.nodes.StructuredGraph.getDebug:()Lorg/graalvm/compiler/debug/DebugContext;
            iconst_4
            ldc "No guards on %s"
            aload 2 /* beginNode */
            invokevirtual org.graalvm.compiler.debug.DebugContext.log:(ILjava/lang/String;Ljava/lang/Object;)V
        end local 2 // org.graalvm.compiler.nodes.AbstractBeginNode beginNode
        18: .line 61
      StackMap locals: org.graalvm.compiler.phases.common.InsertGuardFencesPhase org.graalvm.compiler.nodes.StructuredGraph top java.util.Iterator
      StackMap stack:
            aload 3
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 1
        19: .line 85
            return
        end local 1 // org.graalvm.compiler.nodes.StructuredGraph graph
        end local 0 // org.graalvm.compiler.phases.common.InsertGuardFencesPhase this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   20     0       this  Lorg/graalvm/compiler/phases/common/InsertGuardFencesPhase;
            0   20     1      graph  Lorg/graalvm/compiler/nodes/StructuredGraph;
            2   18     2  beginNode  Lorg/graalvm/compiler/nodes/AbstractBeginNode;
    MethodParameters:
       Name  Flags
      graph  

  private static boolean isDeoptGuard(org.graalvm.compiler.nodes.AbstractBeginNode);
    descriptor: (Lorg/graalvm/compiler/nodes/AbstractBeginNode;)Z
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=4, args_size=1
        start local 0 // org.graalvm.compiler.nodes.AbstractBeginNode beginNode
         0: .line 88
            aload 0 /* beginNode */
            invokevirtual org.graalvm.compiler.nodes.AbstractBeginNode.predecessor:()Lorg/graalvm/compiler/graph/Node;
            instanceof org.graalvm.compiler.nodes.IfNode
            ifne 2
         1: .line 89
            iconst_0
            ireturn
         2: .line 91
      StackMap locals:
      StackMap stack:
            aload 0 /* beginNode */
            invokevirtual org.graalvm.compiler.nodes.AbstractBeginNode.predecessor:()Lorg/graalvm/compiler/graph/Node;
            checkcast org.graalvm.compiler.nodes.IfNode
            astore 1 /* ifNode */
        start local 1 // org.graalvm.compiler.nodes.IfNode ifNode
         3: .line 93
            aload 1 /* ifNode */
            invokevirtual org.graalvm.compiler.nodes.IfNode.trueSuccessor:()Lorg/graalvm/compiler/nodes/AbstractBeginNode;
            aload 0 /* beginNode */
            if_acmpne 6
         4: .line 94
            aload 1 /* ifNode */
            invokevirtual org.graalvm.compiler.nodes.IfNode.falseSuccessor:()Lorg/graalvm/compiler/nodes/AbstractBeginNode;
            astore 2 /* otherBegin */
        start local 2 // org.graalvm.compiler.nodes.AbstractBeginNode otherBegin
         5: .line 95
            goto 8
        end local 2 // org.graalvm.compiler.nodes.AbstractBeginNode otherBegin
         6: .line 96
      StackMap locals: org.graalvm.compiler.nodes.IfNode
      StackMap stack:
            getstatic org.graalvm.compiler.phases.common.InsertGuardFencesPhase.$assertionsDisabled:Z
            ifne 7
            aload 1 /* ifNode */
            invokevirtual org.graalvm.compiler.nodes.IfNode.falseSuccessor:()Lorg/graalvm/compiler/nodes/AbstractBeginNode;
            aload 0 /* beginNode */
            if_acmpeq 7
            new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
         7: .line 97
      StackMap locals:
      StackMap stack:
            aload 1 /* ifNode */
            invokevirtual org.graalvm.compiler.nodes.IfNode.trueSuccessor:()Lorg/graalvm/compiler/nodes/AbstractBeginNode;
            astore 2 /* otherBegin */
        start local 2 // org.graalvm.compiler.nodes.AbstractBeginNode otherBegin
         8: .line 99
      StackMap locals: org.graalvm.compiler.nodes.AbstractBeginNode
      StackMap stack:
            aload 2 /* otherBegin */
            invokevirtual org.graalvm.compiler.nodes.AbstractBeginNode.next:()Lorg/graalvm/compiler/nodes/FixedNode;
            instanceof org.graalvm.compiler.nodes.DeoptimizeNode
            ifne 10
         9: .line 100
            iconst_0
            ireturn
        10: .line 102
      StackMap locals:
      StackMap stack:
            aload 2 /* otherBegin */
            invokevirtual org.graalvm.compiler.nodes.AbstractBeginNode.next:()Lorg/graalvm/compiler/nodes/FixedNode;
            checkcast org.graalvm.compiler.nodes.DeoptimizeNode
            astore 3 /* deopt */
        start local 3 // org.graalvm.compiler.nodes.DeoptimizeNode deopt
        11: .line 103
            aload 3 /* deopt */
            invokevirtual org.graalvm.compiler.nodes.DeoptimizeNode.getAction:()Ljdk/vm/ci/meta/DeoptimizationAction;
            invokevirtual jdk.vm.ci.meta.DeoptimizationAction.doesInvalidateCompilation:()Z
            ireturn
        end local 3 // org.graalvm.compiler.nodes.DeoptimizeNode deopt
        end local 2 // org.graalvm.compiler.nodes.AbstractBeginNode otherBegin
        end local 1 // org.graalvm.compiler.nodes.IfNode ifNode
        end local 0 // org.graalvm.compiler.nodes.AbstractBeginNode beginNode
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0   12     0   beginNode  Lorg/graalvm/compiler/nodes/AbstractBeginNode;
            3   12     1      ifNode  Lorg/graalvm/compiler/nodes/IfNode;
            5    6     2  otherBegin  Lorg/graalvm/compiler/nodes/AbstractBeginNode;
            8   12     2  otherBegin  Lorg/graalvm/compiler/nodes/AbstractBeginNode;
           11   12     3       deopt  Lorg/graalvm/compiler/nodes/DeoptimizeNode;
    MethodParameters:
           Name  Flags
      beginNode  

  private static boolean isBoundsCheckGuard(org.graalvm.compiler.nodes.AbstractBeginNode);
    descriptor: (Lorg/graalvm/compiler/nodes/AbstractBeginNode;)Z
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=7, args_size=1
        start local 0 // org.graalvm.compiler.nodes.AbstractBeginNode beginNode
         0: .line 109
            aload 0 /* beginNode */
            invokevirtual org.graalvm.compiler.nodes.AbstractBeginNode.predecessor:()Lorg/graalvm/compiler/graph/Node;
            instanceof org.graalvm.compiler.nodes.IfNode
            ifne 2
         1: .line 110
            iconst_0
            ireturn
         2: .line 112
      StackMap locals:
      StackMap stack:
            aload 0 /* beginNode */
            invokevirtual org.graalvm.compiler.nodes.AbstractBeginNode.predecessor:()Lorg/graalvm/compiler/graph/Node;
            checkcast org.graalvm.compiler.nodes.IfNode
            astore 1 /* ifNode */
        start local 1 // org.graalvm.compiler.nodes.IfNode ifNode
         3: .line 114
            aload 1 /* ifNode */
            invokevirtual org.graalvm.compiler.nodes.IfNode.trueSuccessor:()Lorg/graalvm/compiler/nodes/AbstractBeginNode;
            aload 0 /* beginNode */
            if_acmpne 6
         4: .line 115
            aload 1 /* ifNode */
            invokevirtual org.graalvm.compiler.nodes.IfNode.falseSuccessor:()Lorg/graalvm/compiler/nodes/AbstractBeginNode;
            astore 2 /* otherBegin */
        start local 2 // org.graalvm.compiler.nodes.AbstractBeginNode otherBegin
         5: .line 116
            goto 8
        end local 2 // org.graalvm.compiler.nodes.AbstractBeginNode otherBegin
         6: .line 117
      StackMap locals: org.graalvm.compiler.nodes.IfNode
      StackMap stack:
            getstatic org.graalvm.compiler.phases.common.InsertGuardFencesPhase.$assertionsDisabled:Z
            ifne 7
            aload 1 /* ifNode */
            invokevirtual org.graalvm.compiler.nodes.IfNode.falseSuccessor:()Lorg/graalvm/compiler/nodes/AbstractBeginNode;
            aload 0 /* beginNode */
            if_acmpeq 7
            new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
         7: .line 118
      StackMap locals:
      StackMap stack:
            aload 1 /* ifNode */
            invokevirtual org.graalvm.compiler.nodes.IfNode.trueSuccessor:()Lorg/graalvm/compiler/nodes/AbstractBeginNode;
            astore 2 /* otherBegin */
        start local 2 // org.graalvm.compiler.nodes.AbstractBeginNode otherBegin
         8: .line 120
      StackMap locals: org.graalvm.compiler.nodes.AbstractBeginNode
      StackMap stack:
            aload 2 /* otherBegin */
            invokevirtual org.graalvm.compiler.nodes.AbstractBeginNode.next:()Lorg/graalvm/compiler/nodes/FixedNode;
            instanceof org.graalvm.compiler.nodes.DeoptimizeNode
            ifeq 12
         9: .line 121
            aload 2 /* otherBegin */
            invokevirtual org.graalvm.compiler.nodes.AbstractBeginNode.next:()Lorg/graalvm/compiler/nodes/FixedNode;
            checkcast org.graalvm.compiler.nodes.DeoptimizeNode
            astore 3 /* deopt */
        start local 3 // org.graalvm.compiler.nodes.DeoptimizeNode deopt
        10: .line 122
            aload 3 /* deopt */
            invokevirtual org.graalvm.compiler.nodes.DeoptimizeNode.getReason:()Ljdk/vm/ci/meta/DeoptimizationReason;
            getstatic jdk.vm.ci.meta.DeoptimizationReason.BoundsCheckException:Ljdk/vm/ci/meta/DeoptimizationReason;
            if_acmpne 14
            aload 0 /* beginNode */
            invokestatic org.graalvm.compiler.phases.common.InsertGuardFencesPhase.hasMultipleGuardUsages:(Lorg/graalvm/compiler/graph/Node;)Z
            ifne 14
        11: .line 123
            iconst_1
            ireturn
        end local 3 // org.graalvm.compiler.nodes.DeoptimizeNode deopt
        12: .line 125
      StackMap locals:
      StackMap stack:
            aload 2 /* otherBegin */
            instanceof org.graalvm.compiler.nodes.LoopExitNode
            ifeq 14
            aload 0 /* beginNode */
            invokevirtual org.graalvm.compiler.nodes.AbstractBeginNode.usages:()Lorg/graalvm/compiler/graph/iterators/NodeIterable;
            ldc Lorg/graalvm/compiler/nodes/extended/MultiGuardNode;
            invokeinterface org.graalvm.compiler.graph.iterators.NodeIterable.filter:(Ljava/lang/Class;)Lorg/graalvm/compiler/graph/iterators/NodeIterable;
            invokeinterface org.graalvm.compiler.graph.iterators.NodeIterable.isNotEmpty:()Z
            ifeq 14
            aload 0 /* beginNode */
            invokestatic org.graalvm.compiler.phases.common.InsertGuardFencesPhase.hasMultipleGuardUsages:(Lorg/graalvm/compiler/graph/Node;)Z
            ifne 14
        13: .line 126
            iconst_1
            ireturn
        14: .line 129
      StackMap locals:
      StackMap stack:
            aload 0 /* beginNode */
            invokevirtual org.graalvm.compiler.nodes.AbstractBeginNode.usages:()Lorg/graalvm/compiler/graph/iterators/NodeIterable;
            invokeinterface org.graalvm.compiler.graph.iterators.NodeIterable.iterator:()Ljava/util/Iterator;
            astore 4
            goto 27
      StackMap locals: org.graalvm.compiler.nodes.AbstractBeginNode org.graalvm.compiler.nodes.IfNode org.graalvm.compiler.nodes.AbstractBeginNode top java.util.Iterator
      StackMap stack:
        15: aload 4
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast org.graalvm.compiler.graph.Node
            astore 3 /* usage */
        start local 3 // org.graalvm.compiler.graph.Node usage
        16: .line 130
            aload 3 /* usage */
            invokevirtual org.graalvm.compiler.graph.Node.inputPositions:()Ljava/lang/Iterable;
            invokeinterface java.lang.Iterable.iterator:()Ljava/util/Iterator;
            astore 6
            goto 26
      StackMap locals: org.graalvm.compiler.nodes.AbstractBeginNode org.graalvm.compiler.nodes.IfNode org.graalvm.compiler.nodes.AbstractBeginNode org.graalvm.compiler.graph.Node java.util.Iterator top java.util.Iterator
      StackMap stack:
        17: aload 6
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast org.graalvm.compiler.graph.Position
            astore 5 /* pos */
        start local 5 // org.graalvm.compiler.graph.Position pos
        18: .line 131
            aload 5 /* pos */
            invokevirtual org.graalvm.compiler.graph.Position.getInputType:()Lorg/graalvm/compiler/nodeinfo/InputType;
            getstatic org.graalvm.compiler.nodeinfo.InputType.Guard:Lorg/graalvm/compiler/nodeinfo/InputType;
            if_acmpne 26
            aload 5 /* pos */
            aload 3 /* usage */
            invokevirtual org.graalvm.compiler.graph.Position.get:(Lorg/graalvm/compiler/graph/Node;)Lorg/graalvm/compiler/graph/Node;
            aload 0 /* beginNode */
            if_acmpne 26
        19: .line 132
            aload 3 /* usage */
            instanceof org.graalvm.compiler.nodes.PiNode
            ifeq 22
        20: .line 133
            aload 3 /* usage */
            checkcast org.graalvm.compiler.nodes.PiNode
            invokevirtual org.graalvm.compiler.nodes.PiNode.piStamp:()Lorg/graalvm/compiler/core/common/type/Stamp;
            getstatic org.graalvm.compiler.phases.common.InsertGuardFencesPhase.POSITIVE_ARRAY_INDEX_STAMP:Lorg/graalvm/compiler/core/common/type/IntegerStamp;
            invokevirtual java.lang.Object.equals:(Ljava/lang/Object;)Z
            ifne 27
        21: .line 134
            iconst_0
            ireturn
        22: .line 136
      StackMap locals: org.graalvm.compiler.nodes.AbstractBeginNode org.graalvm.compiler.nodes.IfNode org.graalvm.compiler.nodes.AbstractBeginNode org.graalvm.compiler.graph.Node java.util.Iterator org.graalvm.compiler.graph.Position java.util.Iterator
      StackMap stack:
            aload 3 /* usage */
            instanceof org.graalvm.compiler.nodes.memory.Access
            ifeq 25
        23: .line 137
            aload 3 /* usage */
            checkcast org.graalvm.compiler.nodes.memory.Access
            invokeinterface org.graalvm.compiler.nodes.memory.Access.getLocationIdentity:()Ljdk/internal/vm/compiler/word/LocationIdentity;
            invokestatic org.graalvm.compiler.nodes.NamedLocationIdentity.isArrayLocation:(Ljdk/internal/vm/compiler/word/LocationIdentity;)Z
            ifne 27
        24: .line 138
            iconst_0
            ireturn
        25: .line 141
      StackMap locals:
      StackMap stack:
            iconst_0
            ireturn
        end local 5 // org.graalvm.compiler.graph.Position pos
        26: .line 130
      StackMap locals: org.graalvm.compiler.nodes.AbstractBeginNode org.graalvm.compiler.nodes.IfNode org.graalvm.compiler.nodes.AbstractBeginNode org.graalvm.compiler.graph.Node java.util.Iterator top java.util.Iterator
      StackMap stack:
            aload 6
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 17
        end local 3 // org.graalvm.compiler.graph.Node usage
        27: .line 129
      StackMap locals: org.graalvm.compiler.nodes.AbstractBeginNode org.graalvm.compiler.nodes.IfNode org.graalvm.compiler.nodes.AbstractBeginNode top java.util.Iterator
      StackMap stack:
            aload 4
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 15
        28: .line 148
            iconst_1
            ireturn
        end local 2 // org.graalvm.compiler.nodes.AbstractBeginNode otherBegin
        end local 1 // org.graalvm.compiler.nodes.IfNode ifNode
        end local 0 // org.graalvm.compiler.nodes.AbstractBeginNode beginNode
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0   29     0   beginNode  Lorg/graalvm/compiler/nodes/AbstractBeginNode;
            3   29     1      ifNode  Lorg/graalvm/compiler/nodes/IfNode;
            5    6     2  otherBegin  Lorg/graalvm/compiler/nodes/AbstractBeginNode;
            8   29     2  otherBegin  Lorg/graalvm/compiler/nodes/AbstractBeginNode;
           10   12     3       deopt  Lorg/graalvm/compiler/nodes/DeoptimizeNode;
           16   27     3       usage  Lorg/graalvm/compiler/graph/Node;
           18   26     5         pos  Lorg/graalvm/compiler/graph/Position;
    MethodParameters:
           Name  Flags
      beginNode  

  private static boolean hasGuardUsages(org.graalvm.compiler.graph.Node);
    descriptor: (Lorg/graalvm/compiler/graph/Node;)Z
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=5, args_size=1
        start local 0 // org.graalvm.compiler.graph.Node n
         0: .line 152
            aload 0 /* n */
            invokevirtual org.graalvm.compiler.graph.Node.usages:()Lorg/graalvm/compiler/graph/iterators/NodeIterable;
            invokeinterface org.graalvm.compiler.graph.iterators.NodeIterable.iterator:()Ljava/util/Iterator;
            astore 2
            goto 7
      StackMap locals: org.graalvm.compiler.graph.Node top java.util.Iterator
      StackMap stack:
         1: aload 2
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast org.graalvm.compiler.graph.Node
            astore 1 /* usage */
        start local 1 // org.graalvm.compiler.graph.Node usage
         2: .line 153
            aload 1 /* usage */
            invokevirtual org.graalvm.compiler.graph.Node.inputPositions:()Ljava/lang/Iterable;
            invokeinterface java.lang.Iterable.iterator:()Ljava/util/Iterator;
            astore 4
            goto 6
      StackMap locals: org.graalvm.compiler.graph.Node org.graalvm.compiler.graph.Node java.util.Iterator top java.util.Iterator
      StackMap stack:
         3: aload 4
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast org.graalvm.compiler.graph.Position
            astore 3 /* pos */
        start local 3 // org.graalvm.compiler.graph.Position pos
         4: .line 154
            aload 3 /* pos */
            invokevirtual org.graalvm.compiler.graph.Position.getInputType:()Lorg/graalvm/compiler/nodeinfo/InputType;
            getstatic org.graalvm.compiler.nodeinfo.InputType.Guard:Lorg/graalvm/compiler/nodeinfo/InputType;
            if_acmpne 6
            aload 3 /* pos */
            aload 1 /* usage */
            invokevirtual org.graalvm.compiler.graph.Position.get:(Lorg/graalvm/compiler/graph/Node;)Lorg/graalvm/compiler/graph/Node;
            aload 0 /* n */
            if_acmpne 6
         5: .line 155
            iconst_1
            ireturn
        end local 3 // org.graalvm.compiler.graph.Position pos
         6: .line 153
      StackMap locals:
      StackMap stack:
            aload 4
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 3
        end local 1 // org.graalvm.compiler.graph.Node usage
         7: .line 152
      StackMap locals: org.graalvm.compiler.graph.Node top java.util.Iterator
      StackMap stack:
            aload 2
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 1
         8: .line 159
            iconst_0
            ireturn
        end local 0 // org.graalvm.compiler.graph.Node n
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    9     0      n  Lorg/graalvm/compiler/graph/Node;
            2    7     1  usage  Lorg/graalvm/compiler/graph/Node;
            4    6     3    pos  Lorg/graalvm/compiler/graph/Position;
    MethodParameters:
      Name  Flags
      n     

  private static boolean hasMultipleGuardUsages(org.graalvm.compiler.graph.Node);
    descriptor: (Lorg/graalvm/compiler/graph/Node;)Z
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=6, args_size=1
        start local 0 // org.graalvm.compiler.graph.Node n
         0: .line 163
            iconst_0
            istore 1 /* foundOne */
        start local 1 // boolean foundOne
         1: .line 164
            aload 0 /* n */
            invokevirtual org.graalvm.compiler.graph.Node.usages:()Lorg/graalvm/compiler/graph/iterators/NodeIterable;
            invokeinterface org.graalvm.compiler.graph.iterators.NodeIterable.iterator:()Ljava/util/Iterator;
            astore 3
            goto 10
      StackMap locals: org.graalvm.compiler.graph.Node int top java.util.Iterator
      StackMap stack:
         2: aload 3
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast org.graalvm.compiler.graph.Node
            astore 2 /* usage */
        start local 2 // org.graalvm.compiler.graph.Node usage
         3: .line 165
            aload 2 /* usage */
            invokevirtual org.graalvm.compiler.graph.Node.inputPositions:()Ljava/lang/Iterable;
            invokeinterface java.lang.Iterable.iterator:()Ljava/util/Iterator;
            astore 5
            goto 9
      StackMap locals: org.graalvm.compiler.graph.Node int org.graalvm.compiler.graph.Node java.util.Iterator top java.util.Iterator
      StackMap stack:
         4: aload 5
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast org.graalvm.compiler.graph.Position
            astore 4 /* pos */
        start local 4 // org.graalvm.compiler.graph.Position pos
         5: .line 166
            aload 4 /* pos */
            invokevirtual org.graalvm.compiler.graph.Position.getInputType:()Lorg/graalvm/compiler/nodeinfo/InputType;
            getstatic org.graalvm.compiler.nodeinfo.InputType.Guard:Lorg/graalvm/compiler/nodeinfo/InputType;
            if_acmpne 9
            aload 4 /* pos */
            aload 2 /* usage */
            invokevirtual org.graalvm.compiler.graph.Position.get:(Lorg/graalvm/compiler/graph/Node;)Lorg/graalvm/compiler/graph/Node;
            aload 0 /* n */
            if_acmpne 9
         6: .line 167
            iload 1 /* foundOne */
            ifeq 8
         7: .line 168
            iconst_1
            ireturn
         8: .line 170
      StackMap locals: org.graalvm.compiler.graph.Node int org.graalvm.compiler.graph.Node java.util.Iterator org.graalvm.compiler.graph.Position java.util.Iterator
      StackMap stack:
            iconst_1
            istore 1 /* foundOne */
        end local 4 // org.graalvm.compiler.graph.Position pos
         9: .line 165
      StackMap locals: org.graalvm.compiler.graph.Node int org.graalvm.compiler.graph.Node java.util.Iterator top java.util.Iterator
      StackMap stack:
            aload 5
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 4
        end local 2 // org.graalvm.compiler.graph.Node usage
        10: .line 164
      StackMap locals: org.graalvm.compiler.graph.Node int top java.util.Iterator
      StackMap stack:
            aload 3
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 2
        11: .line 174
            iconst_0
            ireturn
        end local 1 // boolean foundOne
        end local 0 // org.graalvm.compiler.graph.Node n
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0   12     0         n  Lorg/graalvm/compiler/graph/Node;
            1   12     1  foundOne  Z
            3   10     2     usage  Lorg/graalvm/compiler/graph/Node;
            5    9     4       pos  Lorg/graalvm/compiler/graph/Position;
    MethodParameters:
      Name  Flags
      n     

  private static java.util.List<org.graalvm.compiler.graph.Node> guardUsages(org.graalvm.compiler.graph.Node);
    descriptor: (Lorg/graalvm/compiler/graph/Node;)Ljava/util/List;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=6, args_size=1
        start local 0 // org.graalvm.compiler.graph.Node n
         0: .line 178
            new java.util.ArrayList
            dup
            invokespecial java.util.ArrayList.<init>:()V
            astore 1 /* ret */
        start local 1 // java.util.List ret
         1: .line 179
            aload 0 /* n */
            invokevirtual org.graalvm.compiler.graph.Node.usages:()Lorg/graalvm/compiler/graph/iterators/NodeIterable;
            invokeinterface org.graalvm.compiler.graph.iterators.NodeIterable.iterator:()Ljava/util/Iterator;
            astore 3
            goto 8
      StackMap locals: org.graalvm.compiler.graph.Node java.util.List top java.util.Iterator
      StackMap stack:
         2: aload 3
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast org.graalvm.compiler.graph.Node
            astore 2 /* usage */
        start local 2 // org.graalvm.compiler.graph.Node usage
         3: .line 180
            aload 2 /* usage */
            invokevirtual org.graalvm.compiler.graph.Node.inputPositions:()Ljava/lang/Iterable;
            invokeinterface java.lang.Iterable.iterator:()Ljava/util/Iterator;
            astore 5
            goto 7
      StackMap locals: org.graalvm.compiler.graph.Node java.util.List org.graalvm.compiler.graph.Node java.util.Iterator top java.util.Iterator
      StackMap stack:
         4: aload 5
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast org.graalvm.compiler.graph.Position
            astore 4 /* pos */
        start local 4 // org.graalvm.compiler.graph.Position pos
         5: .line 181
            aload 4 /* pos */
            invokevirtual org.graalvm.compiler.graph.Position.getInputType:()Lorg/graalvm/compiler/nodeinfo/InputType;
            getstatic org.graalvm.compiler.nodeinfo.InputType.Guard:Lorg/graalvm/compiler/nodeinfo/InputType;
            if_acmpne 7
            aload 4 /* pos */
            aload 2 /* usage */
            invokevirtual org.graalvm.compiler.graph.Position.get:(Lorg/graalvm/compiler/graph/Node;)Lorg/graalvm/compiler/graph/Node;
            aload 0 /* n */
            if_acmpne 7
         6: .line 182
            aload 1 /* ret */
            aload 2 /* usage */
            invokeinterface java.util.List.add:(Ljava/lang/Object;)Z
            pop
        end local 4 // org.graalvm.compiler.graph.Position pos
         7: .line 180
      StackMap locals:
      StackMap stack:
            aload 5
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 4
        end local 2 // org.graalvm.compiler.graph.Node usage
         8: .line 179
      StackMap locals: org.graalvm.compiler.graph.Node java.util.List top java.util.Iterator
      StackMap stack:
            aload 3
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 2
         9: .line 186
            aload 1 /* ret */
            areturn
        end local 1 // java.util.List ret
        end local 0 // org.graalvm.compiler.graph.Node n
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0   10     0      n  Lorg/graalvm/compiler/graph/Node;
            1   10     1    ret  Ljava/util/List<Lorg/graalvm/compiler/graph/Node;>;
            3    8     2  usage  Lorg/graalvm/compiler/graph/Node;
            5    7     4    pos  Lorg/graalvm/compiler/graph/Position;
    Signature: (Lorg/graalvm/compiler/graph/Node;)Ljava/util/List<Lorg/graalvm/compiler/graph/Node;>;
    MethodParameters:
      Name  Flags
      n     
}
SourceFile: "InsertGuardFencesPhase.java"
InnerClasses:
  public Options = org.graalvm.compiler.core.common.SpeculativeExecutionAttacksMitigations$Options of org.graalvm.compiler.core.common.SpeculativeExecutionAttacksMitigations
/

java/ 12/ jdk.internal.vm.compiler/org/graalvm/compiler/phases/common/InsertGuardFencesPhase.class
