[PATCH] D28456: DebugInfo: support for DW_FORM_implicit_const

[Victor Leschuk via Phabricator via llvm-commits]

vleschuk created this revision.
vleschuk added reviewers: mehdi_amini, echristo, aprantl, dblaikie.
vleschuk added a subscriber: llvm-commits.

Add support for DW_FORM_implicit_const (http://www.dwarfstd.org/ShowIssue.php?issue=141215.4) DWARFv5 feature. When this form is used attribute value goes to .debug_abbrev section (as SLEB). The functionality is checked with patched binutils-gdb, patch by Jan Kratochvil which will be published upstream this week. As this form would break any debug tool which doesn't support DWARFv5 it is guarded by dwarf version check. Attempt to use this form with dwarf version <= 4 is considered a fatal error.


https://reviews.llvm.org/D28456

Files:
  include/llvm/CodeGen/DIE.h
  include/llvm/DebugInfo/DWARF/DWARFAbbreviationDeclaration.h
  include/llvm/DebugInfo/DWARF/DWARFFormValue.h
  lib/CodeGen/AsmPrinter/DIE.cpp
  lib/CodeGen/AsmPrinter/DwarfUnit.cpp
  lib/DebugInfo/DWARF/DWARFAbbreviationDeclaration.cpp
  lib/DebugInfo/DWARF/DWARFFormValue.cpp
  test/DebugInfo/Inputs/implicit-const-test.o
  test/DebugInfo/dwarfdump-implicit-const.test
  unittests/DebugInfo/DWARF/DWARFDebugInfoTest.cpp

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