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...://llvm.org/viewvc/llvm-project?view=revision&revision=57465 In order to understand the details, I tried to revert the change but the test case still passes which is not very surprising after 6 years :(. I am seeing a related new bug that causes a load that was stashed on the NodeStack and in RecordedNodes during iSel to get deleted because the RAUW during MatchAddress CSE’s the load. I am hoping that you’d still remember some of the details of why we need to modify the DAG like this. Thanks. Adam

Hello, Tim, Thank you for your advice. Indeed, the problem with "LLVM ERROR: Cannot select" was a false predicate that should have been true. I solved the problem by simply making the C++ function implementing the TableGen predicate used in my store instruction (very similar to the selectIntAddrMSA predicate from the Mips back end) return true instead of false. But