[cfe-commits] [patch] Adds support for -Oz

[Chad Rosier]

On Apr 28, 2011, at 5:25 PM, Jakob Stoklund Olesen wrote:

> 
> On Apr 28, 2011, at 3:19 PM, Chad Rosier wrote:
> 
>> Attached is a patch (against trunk r130433) to add support for the -Oz command line option.  The -Oz option lowers the inlining threshold to 25.
> 
> Would it make sense to lower the threshold all the way to 0 for -Oz? The InlineCost can actually become negative when it looks like inlining will decrease code size, so that wouldn't disable inlining completely.

The value of 25 was chosen to match that in llvm-gcc.  Further performance studies are necessary to determine what would be considered an "optimal" value.  For now the value remains at 25.


> /jakob
>