[PATCH] D158673: [SDAG][RISCV] Avoid neg instructions when lowering atomic_load_sub with a constant rhs

Jessica Clarke via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Thu Aug 24 12:31:27 PDT 2023

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jrtc27 added a comment.

Can we not just teach SelectionDAG to handle ATOMIC_LOAD_SUB=Expand, ATOMIC_LOAD_ADD=Legal?


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  https://reviews.llvm.org/D158673/new/

https://reviews.llvm.org/D158673

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