llvm dev - May 2021 - How Instruction and ConstExpr derived from Operator?

Hi,

Looking at https://llvm.org/doxygen/classllvm_1_1User.html, I don't see any
hierarchical relationship between Instruction and Operator, and the same is
true with ConstExpr and Operator. Then, I am not getting how
Operator::getOpcode() will successfully dyn_cast<> Operator either to
Instruction or to ConstExpr.

Thanks,
Mahesha
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20210518/43e2fcf9/attachment.html>