[llvm] Attributor: Infer noalias.addrspace metadata for memory instructions (PR #136553)

[Matt Arsenault via llvm-commits]

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@@ -12778,6 +12779,191 @@ struct AAAddressSpaceCallSiteArgument final : AAAddressSpaceImpl {
 };
 } // namespace
 
+/// ------------------------ No Alias Address Space  ---------------------------
+// This attrubte assumes flat address space can alias all other address space
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arsenm wrote:

```suggestion
// This attribute assumes flat address space can alias all other address space
```

Comment is slightly off; it's an abstract attribute but it's metadata on memory instructions 

https://github.com/llvm/llvm-project/pull/136553