[clang] [llvm] [sancov] Introduce optional callback for stack-depth tracking (PR #138323)

[Marco Elver via cfe-commits]

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@@ -2361,6 +2361,13 @@ def fsanitize_coverage_ignorelist : Joined<["-"], "fsanitize-coverage-ignorelist
     HelpText<"Disable sanitizer coverage instrumentation for modules and functions "
              "that match the provided special case list, even the allowed ones">,
     MarshallingInfoStringVector<CodeGenOpts<"SanitizeCoverageIgnorelistFiles">>;
+def fsanitize_coverage_stack_depth_callback_min_EQ
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melver wrote:

Yeah LLVM has a bunch of these hidden features, and when you find them to solve your problem it's like hitting the jackpot. ;-)

https://github.com/llvm/llvm-project/pull/138323