[all-commits] [llvm/llvm-project] 8c8d1d: [BOLT] Fix DWARF4/5 file index handling in debug i...

[Grigory Pastukhov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8c8d1d45a6dcafb7d9255fe629d829ab5426ed7a
      https://github.com/llvm/llvm-project/commit/8c8d1d45a6dcafb7d9255fe629d829ab5426ed7a
  Author: Grigory Pastukhov <99913765+grigorypas at users.noreply.github.com>
  Date:   2025-08-29 (Fri, 29 Aug 2025)

  Changed paths:
    M bolt/lib/Core/BinaryContext.cpp
    A bolt/test/X86/dwarf5-debug-line-print.s
    A bolt/test/X86/dwarf5-two-cus.s

  Log Message:
  -----------
  [BOLT] Fix DWARF4/5 file index handling in debug info functions (#151401)

Fix incorrect file index handling that differed between DWARF4 and
DWARF5.

DWARF4 file indices start at 1, while DWARF5 starts at 0. The code was 
manually adjusting indices with `Row.File - 1`, which works for DWARF4 
but breaks DWARF5.

Replace manual indexing with `getFileNameEntry()` which abstracts away 
the DWARF version differences.

Fixed in:
- printDebugInfo()  
- addDebugFilenameToUnit()



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