[all-commits] [llvm/llvm-project] 700baa: [MC][ELF] Accept abbreviated form with sh_flags an...

[Tom Stellard via All-commits]

  Branch: refs/heads/release/11.x
  Home:   https://github.com/llvm/llvm-project
  Commit: 700baa009dc685a0adc5f94d258be4ae24742471
      https://github.com/llvm/llvm-project/commit/700baa009dc685a0adc5f94d258be4ae24742471
  Author: Tobias Burnus <tobias at codesourcery.com>
  Date:   2020-12-14 (Mon, 14 Dec 2020)

  Changed paths:
    M llvm/lib/MC/MCParser/ELFAsmParser.cpp
    M llvm/test/MC/ELF/section-flags-changed.s
    A llvm/test/MC/ELF/section-omitted-attributes.s

  Log Message:
  -----------
  [MC][ELF] Accept abbreviated form with sh_flags and sh_entsize

D73999 / commit 75af9da755721123e62b45cd0bc0c5e688a9722a
added for LLVM 11 a check that sh_flags and sh_entsize (and sh_type)
changes are an error, in line with GNU assembler.

However, GNU assembler accepts and GCC generates an abbreviated form:
while the first .section contains the flags and entsize, subsequent
sections simply contain the name without repeating entsize or flags.

Do likewise for better compatibility.

See https://bugs.llvm.org/show_bug.cgi?id=48201

Reviewed By: jhenderson, MaskRay

Differential Revision: https://reviews.llvm.org/D92052

(cherry picked from commit 1deff4009e0ae661b03682901bf6932297ce7ea1)