[llvm] [SampleFDO][TypeProf]Support vtable type profiling for ext-binary and text format (PR #148002)

[Paschalis Mpeis via llvm-commits]

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@@ -197,8 +197,30 @@ enum class LineType {
   CallSiteProfile,
   BodyProfile,
   Metadata,
+  VirtualCallTypeProfile,
 };
 
+static bool parseTypeCountMap(StringRef Input,
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paschalis-mpeis wrote:

optional: may worth listing a dummy `Input` example here.

https://github.com/llvm/llvm-project/pull/148002