https://www.graalvm.org/ 
final class com.oracle.svm.graal.Target_org_graalvm_compiler_core_match_MatchRuleRegistry
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: com.oracle.svm.graal.Target_org_graalvm_compiler_core_match_MatchRuleRegistry
  super_class: java.lang.Object
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.svm.graal.Target_org_graalvm_compiler_core_match_MatchRuleRegistry this
         0: .line 239
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.oracle.svm.graal.Target_org_graalvm_compiler_core_match_MatchRuleRegistry this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/svm/graal/Target_org_graalvm_compiler_core_match_MatchRuleRegistry;

  public static org.graalvm.collections.EconomicMap<java.lang.Class<? extends org.graalvm.compiler.graph.Node>, java.util.List<org.graalvm.compiler.core.match.MatchStatement>> lookup(java.lang.Class<? extends org.graalvm.compiler.core.gen.NodeLIRBuilder>, org.graalvm.compiler.options.OptionValues, org.graalvm.compiler.debug.DebugContext);
    descriptor: (Ljava/lang/Class;Lorg/graalvm/compiler/options/OptionValues;Lorg/graalvm/compiler/debug/DebugContext;)Lorg/graalvm/collections/EconomicMap;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=4, args_size=3
        start local 0 // java.lang.Class theClass
        start local 1 // org.graalvm.compiler.options.OptionValues options
        start local 2 // org.graalvm.compiler.debug.DebugContext debug
         0: .line 244
            invokestatic com.oracle.svm.graal.GraalSupport.get:()Lcom/oracle/svm/graal/GraalSupport;
            getfield com.oracle.svm.graal.GraalSupport.matchRuleRegistry:Ljava/util/HashMap;
            aload 0 /* theClass */
            invokevirtual java.util.HashMap.get:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast org.graalvm.collections.EconomicMap
            astore 3 /* result */
        start local 3 // org.graalvm.collections.EconomicMap result
         1: .line 245
            aload 3 /* result */
            ifnonnull 3
         2: .line 246
            new java.lang.StringBuilder
            dup
            ldc "MatchRuleRegistry.lookup(): unexpected class "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* theClass */
            invokevirtual java.lang.Class.getName:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokestatic com.oracle.svm.core.util.VMError.shouldNotReachHere:(Ljava/lang/String;)Ljava/lang/RuntimeException;
            pop
         3: .line 248
      StackMap locals: org.graalvm.collections.EconomicMap
      StackMap stack:
            aload 3 /* result */
            areturn
        end local 3 // org.graalvm.collections.EconomicMap result
        end local 2 // org.graalvm.compiler.debug.DebugContext debug
        end local 1 // org.graalvm.compiler.options.OptionValues options
        end local 0 // java.lang.Class theClass
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    4     0  theClass  Ljava/lang/Class<+Lorg/graalvm/compiler/core/gen/NodeLIRBuilder;>;
            0    4     1   options  Lorg/graalvm/compiler/options/OptionValues;
            0    4     2     debug  Lorg/graalvm/compiler/debug/DebugContext;
            1    4     3    result  Lorg/graalvm/collections/EconomicMap<Ljava/lang/Class<+Lorg/graalvm/compiler/graph/Node;>;Ljava/util/List<Lorg/graalvm/compiler/core/match/MatchStatement;>;>;
    Signature: (Ljava/lang/Class<+Lorg/graalvm/compiler/core/gen/NodeLIRBuilder;>;Lorg/graalvm/compiler/options/OptionValues;Lorg/graalvm/compiler/debug/DebugContext;)Lorg/graalvm/collections/EconomicMap<Ljava/lang/Class<+Lorg/graalvm/compiler/graph/Node;>;Ljava/util/List<Lorg/graalvm/compiler/core/match/MatchStatement;>;>;
    RuntimeVisibleAnnotations: 
      com.oracle.svm.core.annotate.Substitute()
    MethodParameters:
          Name  Flags
      theClass  
      options   
      debug     
}
SourceFile: "GraalSubstitutions.java"
    RuntimeVisibleAnnotations: 
      com.oracle.svm.core.annotate.TargetClass(value = Lorg/graalvm/compiler/core/match/MatchRuleRegistry;, onlyWith = {Lcom/oracle/svm/graal/hosted/GraalFeature$IsEnabled;})