[PATCH] D153988: [DWARFv5][DWARFLinker] Remove dsymutil-classic compatibility feature as it leads to an error.
Alexey Lapshin via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Jun 28 09:35:44 PDT 2023
avl created this revision.
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DWARFLinker has a compatibility feature with dsymutil-classic.
It may keep location expression attribute even if does not
reference live address. Current llvm-dwarfdump --verify
reports a error if variable references an address but is not
added into the .debug_names table.
error: Name Index @ 0x0: Entry for DIE @ 0xf35 (DW_TAG_variable) with name seed missing.
DW_TAG_variable
DW_AT_name ("seed")
DW_AT_type (0x00000000000047b7 "uint64_t")
DW_AT_location (DW_OP_addr 0x9ff8) <<<< dead address
DWARFLinker does not add the variable into .debug_names table
because it references dead address. To have a valid variable and
consistent accelerator table it is necessary to remove location expression
referencing dead address. This patch removes dsymutil-classic
compatibilty feature.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D153988
Files:
llvm/include/llvm/DWARFLinker/DWARFLinker.h
llvm/include/llvm/DWARFLinker/DWARFLinkerCompileUnit.h
llvm/lib/DWARFLinker/DWARFLinker.cpp
llvm/test/tools/dsymutil/X86/dead-stripped.cpp
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