Implement a new command line option, -debug, which is meant to unify all of
the random debugging macros scattered throughout llvm.

The new DEBUG(x) macro should be used instead of special purpose debug macros.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2709 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/Statistic.cpp b/lib/Support/Statistic.cpp
index 79b1950..249955b 100644
--- a/lib/Support/Statistic.cpp
+++ b/lib/Support/Statistic.cpp
@@ -18,7 +18,10 @@
 #include "Support/CommandLine.h"
 #include <iostream>
 
+bool DebugFlag;  // DebugFlag - Exported boolean set by the -debug option
+
 static cl::Flag Enabled("stats", "Enable statistics output from program");
+static cl::Flag Debug(DebugFlag, "debug", "Enable debug output", cl::Hidden);
 
 // Print information when destroyed, iff command line option is specified
 void StatisticBase::destroy() const {