ADDITIONAL SYSTEM INFORMATION :
OS: Ubuntu 20.04.5 LTS
ARCH: x86_64
JAVA
- openjdk version "11.0.19-internal" 2023-04-18
- OpenJDK Runtime Environment (fastdebug build 11.0.19-internal+0-adhoc.simon.jdk11u-dev)
- OpenJDK 64-Bit Server VM (fastdebug build 11.0.19-internal+0-adhoc.simon.jdk11u-dev, mixed mode)
JAVAC: javac 11.0.19-internal

A DESCRIPTION OF THE PROBLEM :
The code makes JVM crash with the following assertion error:

# Internal Error (/home/simon/JVMs/jdk11u-dev/src/hotspot/cpu/x86/macroAssembler_x86.cpp:903), pid=2070734, tid=2070735
# assert(false) failed: DEBUG MESSAGE: duplicated predicate failed which is impossible

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. javac T.java
2. java -XX:-BackgroundCompilation -XX:-PrintCompilation --illegal-access=deny T

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
No crash
ACTUAL -
JVM crashed

---------- BEGIN SOURCE ----------
class T {
  long a;
  float f;
  boolean b;
  int g[] = new int[256];

  void foo() {
    int j = 1, k;
    do {
      for (k = 22 + 256; k > 1; --k) f -= j;
      switch (j + 49) {
        case 50:
          switch (92) {
            case 92:
              b = b;
          }
        case 51:
          g[j] += a;
      }
    } while (++j < 228);
  }

  public static void main(String[] g) {
    T t = new T();
    for (; ; ) t.foo();
  }
}

---------- END SOURCE ----------

FREQUENCY : always