[cfe-dev] Emitting full clang command line into Debug Info

[David Blaikie via cfe-dev]

GCC produces the full command line in its producer string, Clang doesn't.
This may've come up in previous discussions/review threads, but I'm not
entirely sure.

There's this: https://reviews.llvm.org/D30760 - -grecord-gcc-switches. So
there's already a "flags" field in DICompileUnit you can use, and maybe
just add your condition ("if codeview") to the code in clang that
conditionally populates that field.

On Thu, Feb 8, 2018 at 4:00 PM Zachary Turner via cfe-dev <
cfe-dev at lists.llvm.org> wrote:

> For CodeView compatibility purposes, we need to be able to emit the full
> command line of the clang driver into the debug info (cc1 command line is
> fine, at least for CV purposes).
>
> rnk@ tells me that he vaguely recalls some people needing this before,
> but he can't recall if there's been an actual effort to submit patches to
> this effect that got blocked on something, or if people are maintaining
> similar patches downstream, or none of the above / something else.
>
> Has anyone attempted something like this before?
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