[llvm] [polly] [SCEV] Add initial support for ptrtoaddr. (PR #158032)

[Nikita Popov via llvm-commits]

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nikic wrote:

We shouldn't test `-disable-verify` here. Unlike ptrtoint, the ptrtoaddr result type is fixed (and equal to the "effective SCEV type" of the pointer), so any zext/trunc handling is not applicable for this instruction. `getPtrToAddrExpr()` should probably not even accept a type argument?

https://github.com/llvm/llvm-project/pull/158032