[patch] Make the llvm mangler depend only on DataLayout.

[Chris Lattner]

On Dec 11, 2013, at 4:24 PM, Rafael Espíndola <rafael.espindola at gmail.com> wrote:

> Hi Chris,
> 
> At the dev meeting we talked about how, because of the mangler, any
> program that wants to know the final symbol name of a GlobalValue has
> to link with Target, and how that is undesirable for llvm-ar.

This patch looks like a great improvement and a big cleanup!

What does this mean for auto-upgrading of bitcode files?  Will old files continue to be readable with new tools?

-Chris