[llvm] [Attributor] Change allocation size and load/store offsets using AAPointerInfo for Alloca instructions and keep track of instructions causing an Access (PR #72029)

[Shilei Tian via llvm-commits]

================
@@ -1394,30 +1522,34 @@ struct AAPointerInfoImpl
         const auto &RAcc = State.getAccess(Index);
         if (!IsMustAcc && RAcc.isAssumption())
           continue;
-        for (auto Offset : Offsets) {
-          auto NewRanges = Offset == AA::RangeTy::Unknown
+        for (auto Range : Ranges) {
+          auto NewRanges = Range.Offset == AA::RangeTy::Unknown
                                ? AA::RangeTy::getUnknown()
                                : RAcc.getRanges();
           if (!NewRanges.isUnknown()) {
-            NewRanges.addToAllOffsets(Offset);
+            NewRanges.addToAllOffsets(Range.Offset);
           }
           AccessKind AK = RAcc.getKind();
           if (!IsMustAcc)
             AK = AccessKind((AK & ~AK_MUST) | AK_MAY);
-          Changed |= addAccess(A, NewRanges, CB, RAcc.getContent(), AK,
-                               RAcc.getType(), RAcc.getRemoteInst());
+          Changed |=
+              addAccess(A, NewRanges, CB, RAcc.getContent(), AK, RAcc.getType(),
+                        OffsetInfoMap, RAcc.getRemoteInst());
         }
       }
     }
     return Changed;
   }
 
+  // /// Offsets Info Map
----------------
shiltian wrote:

unused code?

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