Where does the openjdk JVM interpreter execute the bytecode instanceof operation

[zhengxianwei]

Hello everyone, I'm a simulator developer working on ARM <-> X86 simulator
development. I've run into an issue , the crash occurred while running an
x86 version of dbeaver on an ARM processor. (
https://github.com/dbeaver/dbeaver). As a Java novice, I tried debugging
with jdb and initially found that the instanceof operation returns
different results on x86 and ARM architectures. So, I wanted to examine the
specific execution process of instanceof using the -Xint mode. However, I
could only find the instanceof execution during the JIT process (
https://github.com/openjdk/jdk/blob/6bef0474c8b8773d0d20c0f25c36a2ce9cdbd7e8/src/hotspot/cpu/x86/templateTable_x86.cpp#L4243
). I couldn't locate where instanceof is executed in the interpreter. I
tried searching all files within the project containing instanceof and
adding print statements, but to no avail. Perhaps I made a mistake somewhere
. I thought the most likely place where the interpreter executes instanceof
would be:
https://github.com/openjdk/jdk/blob/6bef0474c8b8773d0d20c0f25c36a2ce9cdbd7e8/src/hotspot/share/interpreter/zero/bytecodeInterpreter.cpp#L2079
. However, it seems that it didn't execute there either. So, my question is,
where does the openjdk JVM interpreter execute the bytecode instanceof
operation?
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