[all-commits] [llvm/llvm-project] 673e54: MC: Fix fragment-in-BSS check

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 673e5422ea4089805afa2a2c548c85be7c228a42
      https://github.com/llvm/llvm-project/commit/673e5422ea4089805afa2a2c548c85be7c228a42
  Author: Fangrui Song <i at maskray.me>
  Date:   2025-07-20 (Sun, 20 Jul 2025)

  Changed paths:
    M llvm/include/llvm/MC/MCSection.h
    M llvm/include/llvm/MC/MCSectionCOFF.h
    M llvm/include/llvm/MC/MCSectionELF.h
    M llvm/lib/MC/MCAssembler.cpp
    M llvm/lib/MC/MCParser/AsmParser.cpp
    M llvm/lib/MC/MCSection.cpp
    M llvm/lib/MC/MCSectionCOFF.cpp
    M llvm/lib/MC/MCSectionELF.cpp
    M llvm/test/MC/COFF/bss-text.s
    M llvm/test/MC/ELF/nobits-non-zero-value.s

  Log Message:
  -----------
  MC: Fix fragment-in-BSS check

* Handle non-zero fill values for `.fill` and `.org` directives.
* Restore the fragment type check
  (5ee34ff1e5cc952116f0da943ddaeb1a71db2940 removed a reachable
  `llvm_unreachable`) to detect unintended API usage.

Remove virtual functions `getVirtualSectionKind` (added in
https://reviews.llvm.org/D78138) as they are unnecessary in diagnostics.
The a.out object file format has the BSS concept, which has been
inherited by COFF, XCOFF, Mach-O, and ELF object file formats.

Pull Request: https://github.com/llvm/llvm-project/pull/149721



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