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

[Vitaly Buka via cfe-commits]

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@@ -3602,6 +3602,7 @@ void CodeGenFunction::EmitCheck(
   llvm::Value *RecoverableCond = nullptr;
   llvm::Value *TrapCond = nullptr;
   bool NoMerge = false;
+  bool SanitizeGuardChecks = ClSanitizeGuardChecks;
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vitalybuka wrote:

Usually we parse Cls as `if (ClSanitizeGuardChecks.count())  override the value calculated normal way.`

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