[clang] [sanitizer] Parse weighted sanitizer args and -fno-sanitize-top-hot (PR #121619)

[Vitaly Buka via cfe-commits]

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@@ -154,6 +154,8 @@ struct SanitizerKind {
 #include "clang/Basic/Sanitizers.def"
 }; // SanitizerKind
 
+using SanitizerMaskCutoffs = std::array<float, SanitizerKind::SO_Count>;
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vitalybuka wrote:

I was thinking what could be  a better implementation to store values. I can be different depending how use those constants.

Let's create a special class for there. 
Maybe SanitizerMaskCutoffs?
and put array and NoSanitizeTopHot into that.


https://github.com/llvm/llvm-project/pull/121619