[llvm] [llvm/llvm-project][Coroutines] Improve debugging and minor refactoring (PR #104642)

[Adrian Vogelsgesang via llvm-commits]

================
@@ -6,7 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 // This file contains classes used to discover if for a particular value
-// there from sue to definition that crosses a suspend block.
+// its definition preceeds and its uses follow a suspend block. This is
----------------
vogelsgesang wrote:

```suggestion
// its definition precedes and its uses follow a suspend block. This is
```

https://github.com/llvm/llvm-project/pull/104642