[llvm] [LICM] Prevent LICM of ptrtoint and inttoptr when using non-integral pointers (PR #97272)

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=?utf-8?q?Csanád_Hajdú?= <csanad.hajdu at arm.com>,
=?utf-8?q?Csanád_Hajdú?= <csanad.hajdu at arm.com>
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In-Reply-To: <llvm.org/llvm/llvm-project/pull/97272 at github.com>


arpilipe wrote:

There was a bit of discussion about LICM in the review that allowed such casts for non-integral pointers.
https://reviews.llvm.org/D104547

At that time, we considered LICM valid because the cast is allowed to produce the same result every time. 

What kind of problem are you trying to solve with this restriction?

https://github.com/llvm/llvm-project/pull/97272