[patch] Special case aliases in GlobalValue::getSection

[Rafael Espíndola]

On 6 May 2014 12:54, Reid Kleckner <rnk at google.com> wrote:
> David, is this consistent with the new section IR design?  Will aliases just
> have the section of the aliased global value?

Note that we already require aliases to not have a section of their
own. The patch simply makes getSection return something useful instead
of always returning the empty string for aliases.

A rebased patch is attached.

Cheers,
Rafael
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