[llvm] [Attributor] Change allocation size and load/store offsets using AAPointerInfo for Alloca instructions (PR #72029)

[Johannes Doerfert via llvm-commits]

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@@ -12811,6 +13056,21 @@ struct AAAllocationInfoImpl : public AAAllocationInfo {
     }
     return false;
   }
+
+  // Maps an old byte range to its new Offset range in the new allocation.
+  // Returns (bool) weather the old byte range's offsets changed or not.
+  bool setNewOffsets(const AA::RangeTy &OldRange, int64_t OldOffset,
+                     int64_t NewComputedOffset, int64_t Size) {
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jdoerfert wrote:

Can we ignore the size? What if there are multiple (maybe new) bins with the same offset but different sizes?

https://github.com/llvm/llvm-project/pull/72029