[PATCH][GCC] Simplification of 1U << (31 - x)

[Jakub Jelinek]

On Tue, Sep 26, 2017 at 12:44:10PM +0000, Sudi Das wrote:
> 
> Still waiting on Jakub's comment on whether there are more things needed
> at the backend.  But I have updated the patch according to Richard's
> comments.

Well, we don't want to regress performance wise on one of the most important
primary targets.  I don't care that much if the RTL/backend work is done
together with the patch, or as a follow-up during stage1/3, but it should be
done, the testcases I've posted can be used as a basis of a P1 runtime
performance regression.

	Jakub