[all-commits] [llvm/llvm-project] 7a3e66: [DebugInfo] Do not error on unsupported CIE version

[Rafael Auler via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7a3e664db5761e27a3cf7d67580f43470f927624
      https://github.com/llvm/llvm-project/commit/7a3e664db5761e27a3cf7d67580f43470f927624
  Author: Rafael Auler <rafaelauler at fb.com>
  Date:   2021-03-08 (Mon, 08 Mar 2021)

  Changed paths:
    M llvm/lib/DebugInfo/DWARF/DWARFDebugFrame.cpp
    M llvm/test/DebugInfo/X86/eh-frame-invalid-version-zero.s
    M llvm/test/DebugInfo/X86/eh-frame-invalid-version.s

  Log Message:
  -----------
  [DebugInfo] Do not error on unsupported CIE version

D81469 introduced a check to error on CIE version different
than 1 for eh_frame, but older compilers mistakenly create binaries
with this version set to 3 for DWARF4 or 4 to DWARF5. Move the check
to dump time instead of eh_frame parse time, so we can be tolerant
with older binaries.

Reviewed By: aprantl

Differential Revision: https://reviews.llvm.org/D97830