[clang] [IRPGO][ValueProfile] Instrument virtual table address that could be used to do virtual table address comparision for indirect-call-promotion. (PR #66825)

[David Li via cfe-commits]

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@@ -276,6 +286,12 @@ uint64_t __llvm_profile_get_num_counters(const char *Begin, const char *End);
 /*! \brief Get the size of the profile counters section in bytes. */
 uint64_t __llvm_profile_get_counters_size(const char *Begin, const char *End);
 
+uint64_t __llvm_profile_get_num_vtable(const VTableProfData *Begin,
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david-xl wrote:

add brief documentation.

https://github.com/llvm/llvm-project/pull/66825