[llvm] [ValueTracking] Allow getUnderlyingPointer to look through inttoptr/ptrtoint round trip casts (PR #146432)

[Drew Kersnar via llvm-commits]

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@@ -1602,6 +1602,8 @@ AliasResult BasicAAResult::aliasCheck(const Value *V1, LocationSize V1Size,
   // Figure out what objects these things are pointing to if we can.
   const Value *O1 = getUnderlyingObject(V1, MaxLookupSearchDepth);
   const Value *O2 = getUnderlyingObject(V2, MaxLookupSearchDepth);
+  removeRoundTripCasts(O1);
+  removeRoundTripCasts(O2);
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dakersnar wrote:

Thanks for the explanation, that makes sense to me. Closing this PR. Appreciate the time!

https://github.com/llvm/llvm-project/pull/146432