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

[Thurston Dang via cfe-commits]

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@@ -44,6 +92,19 @@ void clang::serializeSanitizerSet(SanitizerSet Set,
 #include "clang/Basic/Sanitizers.def"
 }
 
+void clang::serializeSanitizerMaskCutoffs(
+    const SanitizerMaskCutoffs &Cutoffs, SmallVectorImpl<std::string> &Values) {
+#define SANITIZER(NAME, ID)                                                    \
+  if (auto C = Cutoffs[SanitizerKind::SO_##ID]) {                              \
+    llvm::APFloat F(*C);                                                       \
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thurstond wrote:

I agree floating-point is ugly (especially with imprecision), but a range of [1,1000000] feels too arbitrary. I suspect we'd get a lot of confused users putting in a value of 1 and getting the opposite result.

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