[llvm] r277413 - [Verifier] Disallow illegal ptr<->int casts in ConstantExprs

[Matt Arsenault via llvm-commits]

On 08/01/2016 08:31 PM, Sanjoy Das via llvm-commits wrote:
> Addressed this inhttps://reviews.llvm.org/rL277414   Let me know if I
> should add more tests.
Maybe some that roundtrip? Also maybe a cycle? I remember running into a 
lot of annoying constantexpr cast cases when I was fixing address 
spaces. See r187506 for the kinds of things I'm thinking of (although 
not all apply in this case)

-Matt