[llvm-commits] [Patch] Don't do switch-to-lookup table unless TTI is present

[Andrew Trick]

On Nov 7, 2012, at 11:01 AM, Hans Wennborg <hans at chromium.org> wrote:

> Hi all,
> 
> Currently, SimplifyCFG does the switch-to-lookup table transformation
> unless there is TargetTransformInfo that disables it.
> 
> Andrew pointed out [1] that this might not be desirable.
> 
> The attached patch makes the transformation only run when there is TTI
> present that enables it.
> 
> Please take a look!


LGTM.
Thanks Hans. I think this is a better policy given that we can't undo the transformation.

-Andy