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

[Marco Elver via cfe-commits]

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@@ -34,6 +34,7 @@ class SanitizerArgs {
   std::vector<std::string> CoverageIgnorelistFiles;
   std::vector<std::string> BinaryMetadataIgnorelistFiles;
   int CoverageFeatures = 0;
+  int StackDepthCallbackMin = 0;
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melver wrote:

`CoverageStackDepthCallbackMin`

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