temporary

2 files changed, 12 insertions, 0 deletions

diff --git a/llvm/include/llvm/LTO/Config.h b/llvm/include/llvm/LTO/Config.h
index 754e3126f8a..6db1235a692 100644
--- a/llvm/include/llvm/LTO/Config.h
+++ b/llvm/include/llvm/LTO/Config.h
@@ -117,6 +117,12 @@ struct Config {
   /// Statistics output file path.
   std::string StatsFile;
 
+  /// Time trace enabled
+  bool TimeTraceEnabled = false;
+
+  /// Time trace granularity
+  unsigned TimeTraceGranularity = 500;
+
   bool ShouldDiscardValueNames = true;
   DiagnosticHandlerFunction DiagHandler;
 
diff --git a/llvm/lib/LTO/LTO.cpp b/llvm/lib/LTO/LTO.cpp
index 0d48090e426..e2c8aa15989 100644
--- a/llvm/lib/LTO/LTO.cpp
+++ b/llvm/lib/LTO/LTO.cpp
@@ -39,6 +39,7 @@
 #include "llvm/Support/TargetRegistry.h"
 #include "llvm/Support/ThreadPool.h"
 #include "llvm/Support/Threading.h"
+#include "llvm/Support/TimeProfiler.h"
 #include "llvm/Support/VCSRevision.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Target/TargetMachine.h"
@@ -1133,6 +1134,9 @@ public:
                 &ResolvedODR,
             const GVSummaryMapTy &DefinedGlobals,
             MapVector<StringRef, BitcodeModule> &ModuleMap) {
+          if (Conf.TimeTraceEnabled)
+            timeTraceProfilerInitialize(Conf.TimeTraceGranularity,
+                                        "thin backend");
           Error E = runThinLTOBackendThread(
               AddStream, Cache, Task, BM, CombinedIndex, ImportList, ExportList,
               ResolvedODR, DefinedGlobals, ModuleMap);
@@ -1143,6 +1147,8 @@ public:
             else
               Err = std::move(E);
           }
+          if (timeTraceProfilerEnabled())
+            timeTraceProfilerFinishThread();
         },
         BM, std::ref(CombinedIndex), std::ref(ImportList), std::ref(ExportList),
         std::ref(ResolvedODR), std::ref(DefinedGlobals), std::ref(ModuleMap));