[PATCH] D61600: [DebugInfo] More precise variable range for stack locations

[Nikola Prica via Phabricator via llvm-commits]

NikolaPrica updated this revision to Diff 201236.
NikolaPrica added a comment.

- Represent DbgVariable's single value representation by DebugLocEntry::Value insted of representing it with MachineInstr. Such representation will allow us to produce fragment single value representation (for now it is not supported).
- Update DwarfDebug::buildLocationList to check if produced list has single entry that is valid throughout whole variable's scope.

If this seems as a proper way, I suppose that we can make DebugLoc::Value now as a separate class ValueLoc or ValueLocation? Such refactor could go as a separate NFC patch if it is fine?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D61600/new/

https://reviews.llvm.org/D61600

Files:
  lib/CodeGen/AsmPrinter/DbgEntityHistoryCalculator.cpp
  lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
  lib/CodeGen/AsmPrinter/DwarfDebug.cpp
  lib/CodeGen/AsmPrinter/DwarfDebug.h
  lib/CodeGen/AsmPrinter/DwarfUnit.cpp
  lib/CodeGen/AsmPrinter/DwarfUnit.h
  test/DebugInfo/MIR/X86/dbg-stack-value-range.mir
  test/DebugInfo/X86/fission-ranges.ll

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