[cfe-commits] r70249 - /cfe/trunk/tools/clang-cc/clang-cc.cpp

[Chris Lattner]

On Apr 27, 2009, at 6:28 PM, Daniel Dunbar wrote:

> It isn't, but for automatically making breakdowns like the ones at
>   http://clang.llvm.org/performance.html
> its much simpler to just use "-Xclang -empty-input-only" than to try  
> and modify the build system.

Wow, that page is old..

-Chris

>
>  - Daniel
>
> On Mon, Apr 27, 2009 at 4:20 PM, Eli Friedman  
> <eli.friedman at gmail.com> wrote:
> On Mon, Apr 27, 2009 at 2:19 PM, Daniel Dunbar <daniel at zuster.org>  
> wrote:
> > Author: ddunbar
> > Date: Mon Apr 27 16:19:07 2009
> > New Revision: 70249
> >
> > URL: http://llvm.org/viewvc/llvm-project?rev=70249&view=rev
> > Log:
> > Add -empty-input-only option, for timing.
> >  - Forces input file to be empty to time startup/shutdown costs.
>
> How is this different from just using /dev/null as the input?
>
> -Eli
>
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