[patch] Drop support for non-cfi capable assemblers

[Eric Christopher]

I'm down with the general idea, people wanting a cutting edge compiler
with an old assembler would be an odd use case that I'm not sure we
care overly much about.

-eric

On Fri, Mar 21, 2014 at 11:40 AM, Rafael Espíndola
<rafael.espindola at gmail.com> wrote:
> Having the MCStreamer interface feed back to itself via
> EmitDwarfAdvanceLineAddr and EmitDwarfAdvanceFrameAddr to support
> non-cfi assemblers is one of my favorite hacks, but it might no longer
> be necessary.
>
> In llvm, MC itself supports cfi since the end of 2010 (support started
> in r119972, is reported in the 2.9 release notes).
>
> In binutils the support has been around for much longer. It looks like
> support started to be added in May 2003. It is available in 2.15
> (31-Aug-2011, 2.14 is from 12-Jun-2003).
>
> Cheers,
> Rafael