tree 2fb2d1cb6a1cf0526913fa9347b0d5cd82bd2a10
parent 99f6cb89352f7491e8cd3cc58c6d1ba687c99b27
author Nikita Popov <npopov@redhat.com> 1749565185 +0200
committer GitHub <noreply@github.com> 1749565185 +0200
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[InstCombine] Preserve flags for difference of gep chains (#143488)

When expanding the offset of a GEP chain via a series of adds, try to
preserve the nsw/nuw flags based on inbounds/nuw. This is a followup to
https://github.com/llvm/llvm-project/pull/142958.

Proof: https://alive2.llvm.org/ce/z/8HiFYY (note that preserving nsw in
the nusw case is not valid)