[patch] Enable column information by default

[Diego Novillo]

On Wed, Jul 9, 2014 at 10:10 PM, Diego Novillo <dnovillo at google.com> wrote:
> On Wed, Jul 9, 2014 at 9:35 PM, Nico Weber <thakis at chromium.org> wrote:
>> Did you measure the compile time impact of this?
>
> Yes, in the message I mentioned in my patch description:
>
>>>
>>> http://lists.cs.uiuc.edu/pipermail/llvmdev/2014-June/074290.html

Pushed send too soon. Sorry.

The compile time effect is nil. The effect on generated debug info
size is ~1% (less than 1% overall) and approximately 3% for -gmlt. I
tested this over our whole internal code base.


Diego.