https://www.graalvm.org/ 
abstract class com.oracle.truffle.llvm.runtime.SulongLibrary$LookupNode extends com.oracle.truffle.llvm.runtime.nodes.api.LLVMNode
  minor version: 0
  major version: 59
  flags: flags: (0x0420) ACC_SUPER, ACC_ABSTRACT
  this_class: com.oracle.truffle.llvm.runtime.SulongLibrary$LookupNode
  super_class: com.oracle.truffle.llvm.runtime.nodes.api.LLVMNode
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.llvm.runtime.SulongLibrary$LookupNode this
         0: .line 136
            aload 0 /* this */
            invokespecial com.oracle.truffle.llvm.runtime.nodes.api.LLVMNode.<init>:()V
            return
        end local 0 // com.oracle.truffle.llvm.runtime.SulongLibrary$LookupNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/llvm/runtime/SulongLibrary$LookupNode;

  abstract com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor execute(com.oracle.truffle.llvm.runtime.SulongLibrary, java.lang.String);
    descriptor: (Lcom/oracle/truffle/llvm/runtime/SulongLibrary;Ljava/lang/String;)Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;
    flags: (0x0400) ACC_ABSTRACT
    MethodParameters:
         Name  Flags
      library  
      name     

  com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor doCached(com.oracle.truffle.llvm.runtime.SulongLibrary, java.lang.String, com.oracle.truffle.llvm.runtime.SulongLibrary, java.lang.String, com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor);
    descriptor: (Lcom/oracle/truffle/llvm/runtime/SulongLibrary;Ljava/lang/String;Lcom/oracle/truffle/llvm/runtime/SulongLibrary;Ljava/lang/String;Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;)Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;
    flags: (0x0000) 
    Code:
      stack=1, locals=6, args_size=6
        start local 0 // com.oracle.truffle.llvm.runtime.SulongLibrary$LookupNode this
        start local 1 // com.oracle.truffle.llvm.runtime.SulongLibrary library
        start local 2 // java.lang.String name
        start local 3 // com.oracle.truffle.llvm.runtime.SulongLibrary cachedLibrary
        start local 4 // java.lang.String cachedName
        start local 5 // com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor cachedDescriptor
         0: .line 150
            aload 5 /* cachedDescriptor */
            areturn
        end local 5 // com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor cachedDescriptor
        end local 4 // java.lang.String cachedName
        end local 3 // com.oracle.truffle.llvm.runtime.SulongLibrary cachedLibrary
        end local 2 // java.lang.String name
        end local 1 // com.oracle.truffle.llvm.runtime.SulongLibrary library
        end local 0 // com.oracle.truffle.llvm.runtime.SulongLibrary$LookupNode this
      LocalVariableTable:
        Start  End  Slot              Name  Signature
            0    1     0              this  Lcom/oracle/truffle/llvm/runtime/SulongLibrary$LookupNode;
            0    1     1           library  Lcom/oracle/truffle/llvm/runtime/SulongLibrary;
            0    1     2              name  Ljava/lang/String;
            0    1     3     cachedLibrary  Lcom/oracle/truffle/llvm/runtime/SulongLibrary;
            0    1     4        cachedName  Ljava/lang/String;
            0    1     5  cachedDescriptor  Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.dsl.Specialization(guards = {"library == cachedLibrary", "name.equals(cachedName)"}, assumptions = {"singleContextAssumption()"})
    RuntimeInvisibleParameterAnnotations: 
      0:
      1:
      2:
        com.oracle.truffle.api.dsl.Cached(value = "library")
      3:
        com.oracle.truffle.api.dsl.Cached(value = "name")
      4:
        com.oracle.truffle.api.dsl.Cached(value = "lookupFunctionDescriptor(cachedLibrary, cachedName)")
    MethodParameters:
                  Name  Flags
      library           
      name              
      cachedLibrary     
      cachedName        
      cachedDescriptor  

  static com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor doGeneric(com.oracle.truffle.llvm.runtime.SulongLibrary, java.lang.String);
    descriptor: (Lcom/oracle/truffle/llvm/runtime/SulongLibrary;Ljava/lang/String;)Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.llvm.runtime.SulongLibrary library
        start local 1 // java.lang.String name
         0: .line 156
            aload 0 /* library */
            aload 1 /* name */
            invokestatic com.oracle.truffle.llvm.runtime.SulongLibrary$LookupNode.lookupFunctionDescriptor:(Lcom/oracle/truffle/llvm/runtime/SulongLibrary;Ljava/lang/String;)Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;
            areturn
        end local 1 // java.lang.String name
        end local 0 // com.oracle.truffle.llvm.runtime.SulongLibrary library
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    1     0  library  Lcom/oracle/truffle/llvm/runtime/SulongLibrary;
            0    1     1     name  Ljava/lang/String;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.dsl.Specialization(replaces = {"doCached"})
      com.oracle.truffle.api.CompilerDirectives$TruffleBoundary()
    MethodParameters:
         Name  Flags
      library  
      name     

  protected static com.oracle.truffle.llvm.runtime.LLVMFunctionDescriptor lookupFunctionDescriptor(com.oracle.truffle.llvm.runtime.SulongLibrary, java.lang.String);
    descriptor: (Lcom/oracle/truffle/llvm/runtime/SulongLibrary;Ljava/lang/String;)Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;
    flags: (0x000c) ACC_PROTECTED, ACC_STATIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.llvm.runtime.SulongLibrary library
        start local 1 // java.lang.String name
         0: .line 160
            aload 0 /* library */
            aload 1 /* name */
            invokevirtual com.oracle.truffle.llvm.runtime.SulongLibrary.lookupFunctionDescriptor:(Ljava/lang/String;)Lcom/oracle/truffle/llvm/runtime/LLVMFunctionDescriptor;
            areturn
        end local 1 // java.lang.String name
        end local 0 // com.oracle.truffle.llvm.runtime.SulongLibrary library
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    1     0  library  Lcom/oracle/truffle/llvm/runtime/SulongLibrary;
            0    1     1     name  Ljava/lang/String;
    MethodParameters:
         Name  Flags
      library  
      name     
}
SourceFile: "SulongLibrary.java"
NestHost: com.oracle.truffle.llvm.runtime.SulongLibrary
InnerClasses:
  public abstract TruffleBoundary = com.oracle.truffle.api.CompilerDirectives$TruffleBoundary of com.oracle.truffle.api.CompilerDirectives
  abstract LookupNode = com.oracle.truffle.llvm.runtime.SulongLibrary$LookupNode of com.oracle.truffle.llvm.runtime.SulongLibrary
    RuntimeInvisibleAnnotations: 
      com.oracle.truffle.api.dsl.GenerateUncached()