[llvm] [GSYM] Callsites: Add data format support and loading from YAML (PR #109781)

[Kyungwoo Lee via llvm-commits]

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@@ -96,6 +97,7 @@ static bool Quiet;
 static std::vector<uint64_t> LookupAddresses;
 static bool LookupAddressesFromStdin;
 static bool StoreMergedFunctionInfo = false;
+static std::vector<std::string> CallSiteYamlPaths;
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kyulee-com wrote:

Now you use the last arg only.
```suggestion
static std::string CallSiteYamlPath;
```

https://github.com/llvm/llvm-project/pull/109781