[all-commits] [llvm/llvm-project] 46bf5d: Globalopt pass produces invalid debug info (#100654)

[ykhatav via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 46bf5d547fa7f6066019750effaa6c2aa119a8da
      https://github.com/llvm/llvm-project/commit/46bf5d547fa7f6066019750effaa6c2aa119a8da
  Author: ykhatav <yashasvi.khatavkar at intel.com>
  Date:   2024-08-08 (Thu, 08 Aug 2024)

  Changed paths:
    M llvm/lib/IR/Metadata.cpp
    M llvm/lib/Transforms/IPO/GlobalOpt.cpp
    A llvm/test/DebugInfo/X86/undef-dbg-val.ll

  Log Message:
  -----------
  Globalopt pass produces invalid debug info (#100654)

This patch fixes an issue in the GlobalOpt pass where deleting a global
variable fails to update the corresponding dbg.value and it references
an empty metadata entry. The SalvageDebugInfo() function has been
updated to handle dbg.value intrinsic when globals are deleted.



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