[clang] [flang] [clang][flang] Support -time in both clang and flang (PR #109165)

[Kiran Chandramohan via cfe-commits]

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@@ -194,11 +197,29 @@ int Compilation::ExecuteCommand(const Command &C,
   if (LogOnly)
     return 0;
 
+  // We don't use any timers or llvm::TimeGroup's because those are tied into
+  // the global static timer list which, in principle, could be cleared without
+  // us knowing about it.
+  llvm::TimeRecord StartTime;
+  if (getArgs().hasArg(options::OPT_time)) {
+    StartTime = llvm::TimeRecord::getCurrentTime(/*Start=*/true);
+  }
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kiranchandramohan wrote:

Nit: The braces are not required here.

https://github.com/llvm/llvm-project/pull/109165