[llvm] [InstCombine] Fold Carry-Save Adder identities: `(A ^ B) + ((A & B) << 1)` to `A + B` and `(A + B) - ((A & B) << 1)` to `A ^ B` (PR #229511)

Nikita Popov via llvm-commits llvm-commits at lists.llvm.org
Tue Oct 6 12:48:21 PDT 2026

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https://github.com/nikic closed https://github.com/llvm/llvm-project/pull/229511

Previous message: [llvm] [InferAddressSpaces] Do not rewrite index operands of a constant GEP (PR #229491)
Next message: [llvm] [InstCombine] Fold Carry-Save Adder identities: `(A ^ B) + ((A & B) << 1)` to `A + B` and `(A + B) - ((A & B) << 1)` to `A ^ B` (PR #229511)
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