[clang] [llvm] [mlir] [LLVM] Improve IR parsing and printing for target memory locations (PR #176968)

[Antonio Frighetto via cfe-commits]

================
@@ -240,6 +240,28 @@ template <typename LocationEnum> class MemoryEffectsBase {
     return getWithoutLoc(Location::InaccessibleMem).doesNotAccessMemory();
   }
 
+  bool isTargetMemLoc(IRMemLocation Loc) {
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antoniofrighetto wrote:

```suggestion
  bool isTargetMemLoc(IRMemLocation Loc) const {
```

https://github.com/llvm/llvm-project/pull/176968