[llvm] [TBAA] Do not rewrite TBAA tag in `adjustForAccess` if already exists (PR #96483)

[Antonio Frighetto via llvm-commits]

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@@ -846,8 +846,8 @@ struct AAMDNodes {
   AAMDNodes concat(const AAMDNodes &Other) const;
 
   /// Create a new AAMDNode for accessing \p AccessSize bytes of this AAMDNode.
-  /// If his AAMDNode has !tbaa.struct and \p AccessSize matches the size of the
-  /// field at offset 0, get the TBAA tag describing the accessed field.
+  /// If this AAMDNode has !tbaa.struct and \p AccessSize matches the size of
+  /// the field at offset 0, get the TBAA tag describing the accessed field.
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antoniofrighetto wrote:

Adjusted, thanks.

https://github.com/llvm/llvm-project/pull/96483