Document ASM version as 9.x (effectively 9.1 at present)

spring-core/src/main/java/org/springframework/asm/AnnotationVisitor.java

@@ -77,7 +77,7 @@ public abstract class AnnotationVisitor {
         && api != Opcodes.ASM10_EXPERIMENTAL) {
       throw new IllegalArgumentException("Unsupported api " + api);
     }
-    // SPRING PATCH: no preview mode check for ASM 9 experimental
+    // SPRING PATCH: no preview mode check for ASM experimental
     this.api = api;
     this.av = annotationVisitor;
   }

spring-core/src/main/java/org/springframework/asm/ClassVisitor.java

@@ -77,7 +77,7 @@ public abstract class ClassVisitor {
         && api != Opcodes.ASM10_EXPERIMENTAL) {
       throw new IllegalArgumentException("Unsupported api " + api);
     }
-    // SPRING PATCH: no preview mode check for ASM 9 experimental
+    // SPRING PATCH: no preview mode check for ASM experimental
     this.api = api;
     this.cv = classVisitor;
   }

spring-core/src/main/java/org/springframework/asm/FieldVisitor.java

@@ -76,7 +76,7 @@ public abstract class FieldVisitor {
         && api != Opcodes.ASM10_EXPERIMENTAL) {
       throw new IllegalArgumentException("Unsupported api " + api);
     }
-    // SPRING PATCH: no preview mode check for ASM 9 experimental
+    // SPRING PATCH: no preview mode check for ASM experimental
     this.api = api;
     this.fv = fieldVisitor;
   }

spring-core/src/main/java/org/springframework/asm/MethodVisitor.java

@@ -89,7 +89,7 @@ public abstract class MethodVisitor {
         && api != Opcodes.ASM10_EXPERIMENTAL) {
       throw new IllegalArgumentException("Unsupported api " + api);
     }
-    // SPRING PATCH: no preview mode check for ASM 9 experimental
+    // SPRING PATCH: no preview mode check for ASM experimental
     this.api = api;
     this.mv = methodVisitor;
   }

spring-core/src/main/java/org/springframework/asm/ModuleVisitor.java

@@ -75,7 +75,7 @@ public abstract class ModuleVisitor {
         && api != Opcodes.ASM10_EXPERIMENTAL) {
       throw new IllegalArgumentException("Unsupported api " + api);
     }
-    // SPRING PATCH: no preview mode check for ASM 9 experimental
+    // SPRING PATCH: no preview mode check for ASM experimental
     this.api = api;
     this.mv = moduleVisitor;
   }

spring-core/src/main/java/org/springframework/asm/RecordComponentVisitor.java

@@ -75,7 +75,7 @@ public abstract class RecordComponentVisitor {
         && api != Opcodes.ASM10_EXPERIMENTAL) {
       throw new IllegalArgumentException("Unsupported api " + api);
     }
-    // SPRING PATCH: no preview mode check for ASM 9 experimental
+    // SPRING PATCH: no preview mode check for ASM experimental
     this.api = api;
     this.delegate = recordComponentVisitor;
   }

spring-core/src/main/java/org/springframework/asm/SpringAsmInfo.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,7 +18,7 @@ package org.springframework.asm;
 
 /**
  * Utility class exposing constants related to Spring's internal repackaging
- * of the ASM bytecode library: currently based on ASM 9.0 plus minor patches.
+ * of the ASM bytecode library: currently based on ASM 9.x plus minor patches.
  *
  * <p>See <a href="package-summary.html">package-level javadocs</a> for more
  * information on {@code org.springframework.asm}.

spring-core/src/main/java/org/springframework/asm/package-info.java

@@ -1,6 +1,6 @@
 /**
  * Spring's repackaging of
- * <a href="https://gitlab.ow2.org/asm/asm">ASM 9.0</a>
+ * <a href="https://gitlab.ow2.org/asm/asm">ASM 9.x</a>
  * (with Spring-specific patches; for internal use only).
  *
  * <p>This repackaging technique avoids any potential conflicts with