[clang] [llvm] Added instant events and marking defered templated instantiation. (PR #103039)

[Ilya Biryukov via cfe-commits]

================
@@ -83,6 +83,8 @@ namespace llvm {
 
 class raw_pwrite_stream;
 
+enum class TimeTraceEventType { CompleteEvent, InstantEvent, AsyncEvent };
----------------
ilya-biryukov wrote:

It would be useful to add a comment explaining what different event types are about (e.g. it would mention which fields are ignored by instant events)

https://github.com/llvm/llvm-project/pull/103039