[clang] [clang-tools-extra] [clang] Extend diagnose_if to accept more detailed warning information (PR #70976)

[kadir çetinkaya via cfe-commits]

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@@ -489,13 +485,7 @@ static DiagnosticIDs::Level toLevel(diag::Severity SV) {
 DiagnosticIDs::Level
 DiagnosticIDs::getDiagnosticLevel(unsigned DiagID, SourceLocation Loc,
                                   const DiagnosticsEngine &Diag) const {
-  // Handle custom diagnostics, which cannot be mapped.
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kadircet wrote:

ok, putting together a revert for https://github.com/llvm/llvm-project/commit/e39205654dc11c50bd117e8ccac243a641ebd71f

https://github.com/llvm/llvm-project/pull/70976