[PATCH] [SCCP] Calculate Null Pointer Comparisons

[Daniel Berlin]

On Fri, May 15, 2015 at 10:34 AM, Philip Reames
<listmail at philipreames.com> wrote:
> To my knowledge, post-dominance information is not currently used within LLVM's existing passes.  As a result, you'd need to justify the cost of the post-dom-tree computation.

FWIW: I'd really like us to get to the point where we use
post-dominance info more broadly.
But yes, we need to justify the cost here.