[all-commits] [llvm/llvm-project] 25d0f3: [Assignment Tracking] Fix fragment index error in ...

[Orlando Cazalet-Hyams via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 25d0f3c4d0d9f01755b008b5af92448ba593adf9
      https://github.com/llvm/llvm-project/commit/25d0f3c4d0d9f01755b008b5af92448ba593adf9
  Author: OCHyams <orlando.hyams at sony.com>
  Date:   2023-02-10 (Fri, 10 Feb 2023)

  Changed paths:
    M llvm/lib/CodeGen/AssignmentTrackingAnalysis.cpp
    M llvm/test/DebugInfo/assignment-tracking/X86/lower-to-value.ll
    M llvm/test/DebugInfo/assignment-tracking/X86/mem-loc-frag-fill.ll
    M llvm/test/DebugInfo/assignment-tracking/X86/nested-loop-frags.ll

  Log Message:
  -----------
  [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