[clang] [CIR] Add assume_separate_storage operation (PR #149696)

[Henrich Lauko via cfe-commits]

================
@@ -3004,6 +3004,26 @@ def CIR_AssumeOp : CIR_Op<"assume"> {
   }];
 }
 
+def CIR_AssumeSepStorageOp : CIR_Op<"assume_separate_storage",
+                                    [SameTypeOperands]> {
----------------
xlauko wrote:

```suggestion
def CIR_AssumeSepStorageOp : CIR_Op<"assume_separate_storage", [
  SameTypeOperands
]> {
```

https://github.com/llvm/llvm-project/pull/149696