[clang] [llvm] Use global TimerGroups for both new pass manager and old pass manager timers (PR #130375)

[Arthur Eubanks via llvm-commits]

================
@@ -115,7 +103,9 @@ void PassTimingInfo::init() {
 
 /// Prints out timing information and then resets the timers.
 void PassTimingInfo::print(raw_ostream *OutStream) {
-  TG.print(OutStream ? *OutStream : *CreateInfoOutputFile(), true);
+  NamedRegionTimer::getNamedTimerGroup(TimePassesHandler::PassGroupName,
----------------
aeubanks wrote:

`PassTG`? (and all the other instances of `getNamedTimerGroup`)

https://github.com/llvm/llvm-project/pull/130375