[llvm] [Attributor]: AApointerInfo - store the full chain of instructions that make up the access (PR #96526)

[Shilei Tian via llvm-commits]

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@@ -6078,11 +6222,56 @@ struct AAPointerInfo : public AbstractAttribute {
       }
     }
 
+    void mergeAccessPaths(const AccessPathSetTy *AccessPathsNew) const {
+
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shiltian wrote:

```suggestion
```

https://github.com/llvm/llvm-project/pull/96526