[PATCH] MIR Serialization: Serialize the external symbol machine operands.

[Duncan P. N. Exon Smith]

> On 2015-Jul-20, at 14:45, Alex L <arphaman at gmail.com> wrote:
> 
> Hi,
> 
> This patch serialized the external symbol machine operands. They use the following syntax:
> 
>    $<name>
> 
> The names can be quoted.
> 
> This patch also extracts the function that prints the LLVM value names without any prefixes
> and makes it publicly accessible so I can reuse it when printing the external symbol's name.
> 
> Cheers,
> Alex
> <0001-MIR-Serialization-Serialize-external-symbol-machine-.patch>

Please split out refactoring the IR functions into a separate NFC
commit.  Otherwise, LGTM.