[llvm] [AArch64] Add support for 16/32/64-bit floating-point atomic read-modify-write ops (PR #125686)

[Tomas Matheson via llvm-commits]

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@@ -13,20 +13,37 @@
 ]
 
 
-# Type name size
-class Type(enum.Enum):
-    # Value is the size in bytes
-    i8 = 1
-    i16 = 2
-    i32 = 4
-    i64 = 8
-    i128 = 16
-
-    def align(self, aligned: bool) -> int:
-        return self.value if aligned else 1
+class byteSizes:
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tmatheson-arm wrote:

```suggestion
class ByteSizes:
```

https://github.com/llvm/llvm-project/pull/125686