Give NamedRegionTimer an Enabled flag, allowing all its clients to
switch from this:

  if (TimePassesIsEnabled) {
    NamedRegionTimer T(Name, GroupName);
    do_something();
  } else {
    do_something(); // duplicate the code, this time without a timer!
  }

to this:

  {
    NamedRegionTimer T(Name, GroupName, TimePassesIsEnabled);
    do_something();
  }


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106285 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 7da363f..5f55a3d 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -322,11 +322,9 @@
   DwarfStrSectionSym = TextSectionSym = 0;
   DwarfDebugRangeSectionSym = DwarfDebugLocSectionSym = 0; 
   FunctionBeginSym = FunctionEndSym = 0;
-  if (TimePassesIsEnabled) {
-      NamedRegionTimer T(DbgTimerName, DWARFGroupName);
-      beginModule(M);
-  } else {
-      beginModule(M);
+  {
+    NamedRegionTimer T(DbgTimerName, DWARFGroupName, TimePassesIsEnabled);
+    beginModule(M);
   }
 }
 DwarfDebug::~DwarfDebug() {