[PATCH] D150665: [RISCV] Handle addimm chains in SelectAddrRegImm

[Yingwei Zheng via Phabricator via llvm-commits]

dtcxzyw marked an inline comment as done.
dtcxzyw added a comment.

In D150665#4350578 <https://reviews.llvm.org/D150665#4350578>, @craig.topper wrote:

> I feel like this should be handled where the chain was formed or in DAG combine. The whole reason the chain exists is to provide a common base. If the common base isn't right we should fix that.

I cannot find code about forming chains in `RISCVISelLowering.cpp` and `RISCVISelDAGToDAG.cpp`. Should I implement some virtual member functions of class `TargetLowering`?


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