[llvm] [NVPTX] Add TTI support for folding isspacep in InferAS (PR #114486)

[Alex MacLean via llvm-commits]

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@@ -458,7 +459,7 @@ handleSpaceCheckIntrinsics(InstCombiner &IC, IntrinsicInst &II) {
       if (auto *ASCO = dyn_cast<AddrSpaceCastOperator>(Op0))
         AS = ASCO->getOperand(0)->getType()->getPointerAddressSpace();
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AlexMaclean wrote:

Looks like it is only run in `llc`. I see AMDGPU runs this pass in `opt` so we should maybe consider doing the same, but I'm not sure how we'd make that decision. 

https://github.com/llvm/llvm-project/pull/114486