https://www.graalvm.org/ 
class com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor$Execute
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor$Execute
  super_class: java.lang.Object
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor$Execute this
         0: .line 151
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor$Execute this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor$Execute;

  static java.lang.Object doDescriptor(com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor, java.lang.Object[], com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor, com.oracle.truffle.api.nodes.DirectCallNode);
    descriptor: (Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;[Ljava/lang/Object;Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;Lcom/oracle/truffle/api/nodes/DirectCallNode;)Ljava/lang/Object;
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=4, args_size=4
        start local 0 // com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor self
        start local 1 // java.lang.Object[] args
        start local 2 // com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor cachedSelf
        start local 3 // com.oracle.truffle.api.nodes.DirectCallNode call
         0: .line 157
            aload 3 /* call */
            aload 1 /* args */
            invokevirtual com.oracle.truffle.api.nodes.DirectCallNode.call:([Ljava/lang/Object;)Ljava/lang/Object;
            areturn
        end local 3 // com.oracle.truffle.api.nodes.DirectCallNode call
        end local 2 // com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor cachedSelf
        end local 1 // java.lang.Object[] args
        end local 0 // com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor self
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    1     0        self  Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;
            0    1     1        args  [Ljava/lang/Object;
            0    1     2  cachedSelf  Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;
            0    1     3        call  Lcom/oracle/truffle/api/nodes/DirectCallNode;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.dsl.Specialization(limit = "5", guards = {"self == cachedSelf"}, assumptions = {"singleContextAssumption()"})
    RuntimeInvisibleParameterAnnotations: 
      0:
      1:
      2:
        com.oracle.truffle.api.dsl.Cached(value = "self")
      3:
        com.oracle.truffle.api.dsl.Cached(value = "createCall(cachedSelf)")
    MethodParameters:
            Name  Flags
      self        
      args        
      cachedSelf  
      call        

  static java.lang.Object doCached(com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor, java.lang.Object[], com.oracle.truffle.llvm.runtime.LLVMFunctionCode, com.oracle.truffle.api.nodes.DirectCallNode);
    descriptor: (Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;[Ljava/lang/Object;Lcom/oracle/truffle/llvm/runtime/LLVMFunctionCode;Lcom/oracle/truffle/api/nodes/DirectCallNode;)Ljava/lang/Object;
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=4, args_size=4
        start local 0 // com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor self
        start local 1 // java.lang.Object[] args
        start local 2 // com.oracle.truffle.llvm.runtime.LLVMFunctionCode cachedFunctionCode
        start local 3 // com.oracle.truffle.api.nodes.DirectCallNode call
         0: .line 164
            aload 3 /* call */
            aload 1 /* args */
            invokevirtual com.oracle.truffle.api.nodes.DirectCallNode.call:([Ljava/lang/Object;)Ljava/lang/Object;
            areturn
        end local 3 // com.oracle.truffle.api.nodes.DirectCallNode call
        end local 2 // com.oracle.truffle.llvm.runtime.LLVMFunctionCode cachedFunctionCode
        end local 1 // java.lang.Object[] args
        end local 0 // com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor self
      LocalVariableTable:
        Start  End  Slot                Name  Signature
            0    1     0                self  Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;
            0    1     1                args  [Ljava/lang/Object;
            0    1     2  cachedFunctionCode  Lcom/oracle/truffle/llvm/runtime/LLVMFunctionCode;
            0    1     3                call  Lcom/oracle/truffle/api/nodes/DirectCallNode;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.dsl.Specialization(replaces = {"doDescriptor"}, limit = "5", guards = {"self.getFunctionCode() == cachedFunctionCode"})
    RuntimeInvisibleParameterAnnotations: 
      0:
      1:
      2:
        com.oracle.truffle.api.dsl.Cached(value = "self.getFunctionCode()")
      3:
        com.oracle.truffle.api.dsl.Cached(value = "createCall(self)")
    MethodParameters:
                    Name  Flags
      self                
      args                
      cachedFunctionCode  
      call                

  static java.lang.Object doPolymorphic(com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor, java.lang.Object[], com.oracle.truffle.api.nodes.IndirectCallNode);
    descriptor: (Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;[Ljava/lang/Object;Lcom/oracle/truffle/api/nodes/IndirectCallNode;)Ljava/lang/Object;
    flags: (0x0008) ACC_STATIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor self
        start local 1 // java.lang.Object[] args
        start local 2 // com.oracle.truffle.api.nodes.IndirectCallNode call
         0: .line 170
            aload 2 /* call */
            aload 0 /* self */
            invokevirtual com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor.getFunctionCode:()Lcom/oracle/truffle/llvm/runtime/LLVMFunctionCode;
            aload 0 /* self */
            invokevirtual com.oracle.truffle.llvm.runtime.LLVMFunctionCode.getForeignCallTarget:(Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;)Lcom/oracle/truffle/api/CallTarget;
            aload 1 /* args */
            invokevirtual com.oracle.truffle.api.nodes.IndirectCallNode.call:(Lcom/oracle/truffle/api/CallTarget;[Ljava/lang/Object;)Ljava/lang/Object;
            areturn
        end local 2 // com.oracle.truffle.api.nodes.IndirectCallNode call
        end local 1 // java.lang.Object[] args
        end local 0 // com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor self
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  self  Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;
            0    1     1  args  [Ljava/lang/Object;
            0    1     2  call  Lcom/oracle/truffle/api/nodes/IndirectCallNode;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.dsl.Specialization(replaces = {"doCached"})
    RuntimeInvisibleParameterAnnotations: 
      0:
      1:
      2:
        com.oracle.truffle.api.dsl.Cached$Exclusive()
        com.oracle.truffle.api.dsl.Cached()
    MethodParameters:
      Name  Flags
      self  
      args  
      call  

  protected static com.oracle.truffle.api.nodes.DirectCallNode createCall(com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor);
    descriptor: (Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;)Lcom/oracle/truffle/api/nodes/DirectCallNode;
    flags: (0x000c) ACC_PROTECTED, ACC_STATIC
    Code:
      stack=2, locals=2, args_size=1
        start local 0 // com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor self
         0: .line 174
            aload 0 /* self */
            invokevirtual com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor.getFunctionCode:()Lcom/oracle/truffle/llvm/runtime/LLVMFunctionCode;
            aload 0 /* self */
            invokevirtual com.oracle.truffle.llvm.runtime.LLVMFunctionCode.getForeignCallTarget:(Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;)Lcom/oracle/truffle/api/CallTarget;
            invokestatic com.oracle.truffle.api.nodes.DirectCallNode.create:(Lcom/oracle/truffle/api/CallTarget;)Lcom/oracle/truffle/api/nodes/DirectCallNode;
            astore 1 /* callNode */
        start local 1 // com.oracle.truffle.api.nodes.DirectCallNode callNode
         1: .line 175
            aload 1 /* callNode */
            invokevirtual com.oracle.truffle.api.nodes.DirectCallNode.forceInlining:()V
         2: .line 176
            aload 1 /* callNode */
            areturn
        end local 1 // com.oracle.truffle.api.nodes.DirectCallNode callNode
        end local 0 // com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor self
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    3     0      self  Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;
            1    3     1  callNode  Lcom/oracle/truffle/api/nodes/DirectCallNode;
    MethodParameters:
      Name  Flags
      self  

  protected static com.oracle.truffle.api.Assumption singleContextAssumption();
    descriptor: ()Lcom/oracle/truffle/api/Assumption;
    flags: (0x000c) ACC_PROTECTED, ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 180
            invokestatic com.oracle.truffle.llvm.runtime.LLVMLanguage.getLanguage:()Lcom/oracle/truffle/llvm/runtime/LLVMLanguage;
            getfield com.oracle.truffle.llvm.runtime.LLVMLanguage.singleContextAssumption:Lcom/oracle/truffle/api/Assumption;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "LLVMFunctionDescriptor.java"
NestHost: com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor
InnerClasses:
  public abstract Exclusive = com.oracle.truffle.api.dsl.Cached$Exclusive of com.oracle.truffle.api.dsl.Cached
  Execute = com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor$Execute of com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()