8346984: Remove ASM-based benchmarks from Class-File API benchmarks

Reviewed-by: liach, redestad, erikj

make/test/BuildMicrobenchmark.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2018, 2024, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2018, 2025, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -96,8 +96,6 @@ $(eval $(call SetupJavaCompilation, BUILD_JDK_MICROBENCHMARK, \
         --add-exports java.base/jdk.internal.foreign=ALL-UNNAMED \
         --add-exports java.base/jdk.internal.misc=ALL-UNNAMED \
         --add-exports java.base/jdk.internal.util=ALL-UNNAMED \
-        --add-exports java.base/jdk.internal.org.objectweb.asm.tree=ALL-UNNAMED \
-        --add-exports java.base/jdk.internal.org.objectweb.asm=ALL-UNNAMED \
         --add-exports java.base/jdk.internal.vm=ALL-UNNAMED \
         --add-exports java.base/sun.invoke.util=ALL-UNNAMED \
         --add-exports java.base/sun.security.util=ALL-UNNAMED \

test/micro/org/openjdk/bench/jdk/classfile/AbstractCorpusBenchmark.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2022, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -44,8 +44,6 @@
 @Warmup(iterations = 2)
 @Measurement(iterations = 4)
 @Fork(value = 1, jvmArgs = {
-        "--add-exports", "java.base/jdk.internal.org.objectweb.asm=ALL-UNNAMED",
-        "--add-exports", "java.base/jdk.internal.org.objectweb.asm.tree=ALL-UNNAMED",
         "--add-exports", "java.base/jdk.internal.classfile.components=ALL-UNNAMED",
         "--add-exports", "java.base/jdk.internal.classfile.impl=ALL-UNNAMED"})
 @State(Scope.Benchmark)

test/micro/org/openjdk/bench/jdk/classfile/AdaptNull.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2022, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -35,10 +35,6 @@ public class AdaptNull extends AbstractCorpusBenchmark {
 
     @Param({
 //            "ARRAYCOPY",
-            "ASM_1",
-            "ASM_3",
-            "ASM_UNSHARED_3",
-//            "ASM_TREE",
             "SHARED_1",
             "SHARED_2",
             "SHARED_3",

test/micro/org/openjdk/bench/jdk/classfile/ReadDeep.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2022, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -29,12 +29,6 @@
 import java.lang.classfile.CompoundElement;
 import java.lang.classfile.MethodModel;
 import java.lang.classfile.instruction.LoadInstruction;
-import jdk.internal.org.objectweb.asm.ClassReader;
-import jdk.internal.org.objectweb.asm.ClassVisitor;
-import jdk.internal.org.objectweb.asm.MethodVisitor;
-import jdk.internal.org.objectweb.asm.Opcodes;
-import jdk.internal.org.objectweb.asm.tree.ClassNode;
-import jdk.internal.org.objectweb.asm.tree.MethodNode;
 import org.openjdk.jmh.annotations.Benchmark;
 import org.openjdk.jmh.annotations.BenchmarkMode;
 import org.openjdk.jmh.annotations.Mode;
@@ -45,55 +39,6 @@
  */
 public class ReadDeep extends AbstractCorpusBenchmark {
 
-    @Benchmark
-    @BenchmarkMode(Mode.Throughput)
-    public void asmStreamCountLoads(Blackhole bh) {
-        for (byte[] bytes : classes) {
-            ClassReader cr = new ClassReader(bytes);
-
-            var mv = new MethodVisitor(Opcodes.ASM9) {
-                int count = 0;
-
-                @Override
-                public void visitVarInsn(int opcode, int var) {
-                    ++count;
-                }
-            };
-
-            var visitor = new ClassVisitor(Opcodes.ASM9) {
-                @Override
-                public MethodVisitor visitMethod(int access, String name, String descriptor, String signature, String[] exceptions) {
-                    return mv;
-                }
-            };
-            cr.accept(visitor, 0);
-            bh.consume(mv.count);
-        }
-    }
-
-    @Benchmark
-    @BenchmarkMode(Mode.Throughput)
-    public void asmTreeCountLoads(Blackhole bh) {
-        for (byte[] bytes : classes) {
-            var mv = new MethodVisitor(Opcodes.ASM9) {
-                int count = 0;
-
-                @Override
-                public void visitVarInsn(int opcode, int var) {
-                    ++count;
-                }
-            };
-
-            ClassNode node = new ClassNode();
-            ClassReader cr = new ClassReader(bytes);
-            cr.accept(node, 0);
-            for (MethodNode mn : node.methods) {
-                mn.accept(mv);
-            }
-            bh.consume(mv.count);
-        }
-    }
-
     @Benchmark
     @BenchmarkMode(Mode.Throughput)
     public void jdkElementsCountLoads(Blackhole bh) {

test/micro/org/openjdk/bench/jdk/classfile/ReadMetadata.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2022, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,42 +27,11 @@
 import java.lang.classfile.ClassModel;
 import java.lang.classfile.ClassFile;
 import java.lang.classfile.FieldModel;
-import jdk.internal.org.objectweb.asm.*;
-import jdk.internal.org.objectweb.asm.tree.*;
 import org.openjdk.jmh.annotations.*;
 import org.openjdk.jmh.infra.Blackhole;
 
 public class ReadMetadata extends AbstractCorpusBenchmark {
 
-    @Benchmark
-    @BenchmarkMode(Mode.Throughput)
-    public void asmStreamReadName(Blackhole bh) {
-        for (byte[] bytes : classes) {
-            ClassReader cr = new ClassReader(bytes);
-            var  visitor = new ClassVisitor(Opcodes.ASM9) {
-                String theName;
-
-                @Override
-                public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
-                    theName = name;
-                }
-            };
-            cr.accept(visitor, 0);
-            bh.consume(visitor.theName);
-        }
-    }
-
-    @Benchmark
-    @BenchmarkMode(Mode.Throughput)
-    public void asmTreeReadName(Blackhole bh) {
-        for (byte[] bytes : classes) {
-            ClassNode node = new ClassNode();
-            ClassReader cr = new ClassReader(bytes);
-            cr.accept(node, 0);
-            bh.consume(node.name);
-        }
-    }
-
     @Benchmark
     @BenchmarkMode(Mode.Throughput)
     public void jdkReadName(Blackhole bh) {
@@ -90,43 +59,6 @@ public void jdkReadMemberNames(Blackhole bh) {
         }
     }
 
-    @Benchmark
-    @BenchmarkMode(Mode.Throughput)
-    public void asmStreamCountFields(Blackhole bh) {
-        for (byte[] bytes : classes) {
-            ClassReader cr = new ClassReader(bytes);
-            var visitor = new ClassVisitor(Opcodes.ASM9) {
-                int count;
-
-                @Override
-                public FieldVisitor visitField(int access, String name, String descriptor, String signature, Object value) {
-                    if ((access & Opcodes.ACC_PUBLIC) != 1) {
-                        ++count;
-                    }
-                    return null;
-                }
-            };
-            cr.accept(visitor, 0);
-            bh.consume(visitor.count);
-        }
-    }
-
-    @Benchmark
-    @BenchmarkMode(Mode.Throughput)
-    public void asmTreeCountFields(Blackhole bh) {
-        for (byte[] bytes : classes) {
-            int count = 0;
-            ClassNode node = new ClassNode();
-            ClassReader cr = new ClassReader(bytes);
-            cr.accept(node, 0);
-            for (FieldNode fn : node.fields)
-                if ((fn.access & Opcodes.ACC_PUBLIC) != 1) {
-                    ++count;
-                }
-            bh.consume(count);
-        }
-    }
-
     @Benchmark
     @BenchmarkMode(Mode.Throughput)
     public void jdkTreeCountFields(Blackhole bh) {