[all-commits] [llvm/llvm-project] bbd0d1: Implement -frecord-command-line for XCOFF

[Jake Egan via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: bbd0d123d3aaa67d8bed9d16d9001b33540fc04d
      https://github.com/llvm/llvm-project/commit/bbd0d123d3aaa67d8bed9d16d9001b33540fc04d
  Author: Jake Egan <5326451+jakeegan at users.noreply.github.com>
  Date:   2023-07-10 (Mon, 10 Jul 2023)

  Changed paths:
    M clang/lib/Driver/ToolChains/Clang.cpp
    M llvm/include/llvm/CodeGen/AsmPrinter.h
    M llvm/include/llvm/MC/MCStreamer.h
    M llvm/include/llvm/MC/MCXCOFFStreamer.h
    M llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
    M llvm/lib/MC/MCAsmStreamer.cpp
    M llvm/lib/MC/MCStreamer.cpp
    M llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
    A llvm/test/CodeGen/PowerPC/aix-command-line-metadata.ll

  Log Message:
  -----------
  Implement -frecord-command-line for XCOFF

This patch extends support of the option `-frecord-command-line` to XCOFF. XCOFF doesn’t have custom sections like ELF, so the command line data is emitted to a .info section instead. A C_INFO symbol is generated with the .info section to preserve the command line data past the link step. Multiple command lines are separated by newlines and null bytes. The command line data can be retrieved on AIX with command `what file_name`.

Reviewed By: scott.linder

Differential Revision: https://reviews.llvm.org/D153600