[Lldb-commits] [PATCH] D134920: [lldb] Remove scoped timer from high firing and fast running ExtractUnitDIENoDwoIfNeeded

Dave Lee via Phabricator via lldb-commits lldb-commits at lists.llvm.org
Thu Sep 29 16:17:25 PDT 2022


kastiglione created this revision.
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Profiles show that `DWARFUnit::ExtractUnitDIENoDwoIfNeeded` is both high firing (tens of thousands of calls) and fast running (15 µs mean).

Timers like this are noise and load for profiling systems, and can be removed.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D134920

Files:
  lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp


Index: lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp
===================================================================
--- lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp
+++ lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp
@@ -51,8 +51,6 @@
     return; // Already parsed
 
   ElapsedTime elapsed(m_dwarf.GetDebugInfoParseTimeRef());
-  LLDB_SCOPED_TIMERF("%8.8x: DWARFUnit::ExtractUnitDIENoDwoIfNeeded()",
-                     GetOffset());
 
   // Set the offset to that of the first DIE and calculate the start of the
   // next compilation unit header.


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