[polly] Bypass some profitabilty check when polly adds vectorize.enable (PR #227535)

[Michael Kruse via llvm-commits]

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@@ -108,6 +108,17 @@ static cl::opt<bool, true> XPollyProcessUnprofitable(
         "Process scops that are unlikely to benefit from Polly optimizations."),
     cl::location(PollyProcessUnprofitable), cl::cat(PollyCategory));
 
+// This option defines a polly mode that has differences in the polly decisions
+// with a view of vectorizing eventually. This is done by adding a
+// vectorize.enable metadata to the loops analysed and found fit by polly so
+// that the loop vectorizer can handle them.
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Meinersbur wrote:

```suggestion
/// This option defines a polly mode that has differences in the polly decisions
/// with a view of vectorizing eventually. This is done by adding a
/// vectorize.enable metadata to the loops analysed and found fit by polly so
/// that the loop vectorizer can handle them.
```
Use doxygen comments

https://github.com/llvm/llvm-project/pull/227535