OCHyams 25d0f3c4d0 [Assignment Tracking] Fix fragment index error in getDerefOffsetInBytes
Without this patch `getDerefOffsetInBytes` incorrectly always returns
`std::nullopt` for expressions with fragments due to an off-by-one error with
fragment element indices.

Reviewed By: StephenTozer

Differential Revision: https://reviews.llvm.org/D143567
2023-02-10 13:49:05 +00:00
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