[clang] [llvm] [clang] Add `-verify-directives` cc1 flag (PR #179835)

[Aaron Ballman via cfe-commits]

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@@ -30,6 +30,13 @@ class LangOptions;
 class SourceManager;
 class TextDiagnosticBuffer;
 
+enum class DiagnosticMatchResult {
+  None,
+  Partial,        /// Match, but not a full match
+  AtLeastPartial, /// Match, but we didn't check for full match
----------------
AaronBallman wrote:

```suggestion
  Partial,        /// Match, but not a full match.
  AtLeastPartial, /// Match, but we didn't check for full match.
```

https://github.com/llvm/llvm-project/pull/179835