[llvm] [Attributor][FIX] Track returned pointer offsets (PR #110534)

[Shilei Tian via llvm-commits]

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@@ -1495,16 +1477,16 @@ struct AAPointerInfoFloating : public AAPointerInfoImpl {
       Size = AccessSize.getFixedValue();
 
     // Make a strictly ascending list of offsets as required by addAccess()
-    llvm::sort(Offsets);
-    auto *Last = llvm::unique(Offsets);
-    Offsets.erase(Last, Offsets.end());
+    SmallVector<int64_t> OffsetsSorted(Offsets.begin(), Offsets.end());
+    llvm::sort(OffsetsSorted);
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shiltian wrote:

Why was the "removal of redundancy" part removed? You might be able to use `SmallVectorSet`?

https://github.com/llvm/llvm-project/pull/110534