[PATCH] D30080: MC/COFF: Do not emit forward associative section referenceds.

[David Majnemer via llvm-commits]

Does MSCOFF permit chains of associated sections? I can't remember if they
do.


On Thu, Feb 16, 2017 at 6:35 PM Rui Ueyama via Phabricator via llvm-commits
<llvm-commits at lists.llvm.org> wrote:

> ruiu created this revision.
>
> MSVC link.exe cannot handle associative sections that refer later
> sections in the section header. Technically, such COFF object doesn't
> violate the Microsoft COFF spec, as the spec doesn't say anything
> about that, but still we should avoid doing that to make it compatible
> with MS tools.
>
> This patch assigns smaller section numbers to non-associative sections
> and larger numbers to associative sections. This should resolve the
> compatibility issue.
>
>
> https://reviews.llvm.org/D30080
>
> Files:
>   llvm/lib/MC/WinCOFFObjectWriter.cpp
>   llvm/test/DebugInfo/COFF/globals.ll
>   llvm/test/DebugInfo/COFF/types-data-members.ll
>   llvm/test/MC/COFF/section-comdat.s
>
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