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

[Fangrui Song via cfe-commits]

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@@ -2649,6 +2649,14 @@ def fsanitize_undefined_strip_path_components_EQ : Joined<["-"], "fsanitize-unde
   HelpText<"Strip (or keep only, if negative) a given number of path components "
            "when emitting check metadata.">,
   MarshallingInfoInt<CodeGenOpts<"EmitCheckPathComponentsToStrip">, "0", "int">;
+def fno_sanitize_top_hot_EQ
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MaskRay wrote:

It could be confusing that a -fno option doesn't have a positive form. Consider fsanitize-skip..

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