LLVM.opcode mismatch with opcode type

[1m1-github]

from the julia code

function ApprovalProgram(a::UInt64)::UInt64
    if a % UInt64(2) == UInt64(0) return UInt64(1) end
    return UInt64(0)
end

code_llvm gives as the 1st instruction: %0 = and i64 %"a::UInt64", 1

which inspected using LLVM.jl (instruction = collect(LLVM.instructions(bb))[1])

gives typeof(instruction) == LLVM.AndInst which seems like the and opcode of LLVM,

but LLVM.opcode(instruction) gives LLVMAnd::LLVMOpcode = 0x00000017

and 0x17=23 in https://github.com/llvm/llvm-project/blob/main/llvm/include/llvm/IR/Instruction.def corresponds to srem in line 157

Why this mismatch?

[1m1-github]

found the correct mapping

https://github.com/hdoc/llvm-project/blob/release/15.x//llvm/include/llvm-c/Core.h#L2159