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

[Vitaly Buka via cfe-commits]

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@@ -1463,17 +1504,18 @@ void SanitizerArgs::addArgs(const ToolChain &TC, const llvm::opt::ArgList &Args,
 }
 
 SanitizerMask parseArgValues(const Driver &D, const llvm::opt::Arg *A,
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vitalybuka wrote:

Instead of extending this function, it would be cleaner to create another one.

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