[all-commits] [llvm/llvm-project] 3b5b81: Add support for using foreign type units in .debug...

[Greg Clayton via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3b5b814647ef83ab763cf7871b6d74edfca67438
      https://github.com/llvm/llvm-project/commit/3b5b814647ef83ab763cf7871b6d74edfca67438
  Author: Greg Clayton <gclayton at fb.com>
  Date:   2024-06-24 (Mon, 24 Jun 2024)

  Changed paths:
    M lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfo.cpp
    M lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfo.h
    M lldb/source/Plugins/SymbolFile/DWARF/DebugNamesDWARFIndex.cpp
    M lldb/source/Plugins/SymbolFile/DWARF/DebugNamesDWARFIndex.h
    M lldb/source/Plugins/SymbolFile/DWARF/ManualDWARFIndex.cpp
    M lldb/source/Plugins/SymbolFile/DWARF/ManualDWARFIndex.h
    M lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
    M lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.h
    M lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDwo.cpp
    M lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDwo.h
    A lldb/test/Shell/SymbolFile/DWARF/x86/dwp-foreign-type-units.cpp
    M llvm/include/llvm/DebugInfo/DWARF/DWARFAcceleratorTable.h
    M llvm/lib/DebugInfo/DWARF/DWARFAcceleratorTable.cpp

  Log Message:
  -----------
  Add support for using foreign type units in .debug_names. (#87740)

This patch adds support for the new foreign type unit support in
.debug_names. Features include:
- don't manually index foreign TUs if we have info for them
- only use the type unit entries that match the .dwo files when we have
a .dwp file
- fix type unit lookups for .dwo files
- fix crashers that happen due to PeekDIEName() using wrong offsets where an entry had DW_IDX_comp_unit and DW_IDX_type_unit entries and when we had no type unit support, it would cause us to think it was a normal DIE in .debug_info from the main executable.

---------

Co-authored-by: paperchalice <liujunchang97 at outlook.com>



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