Implement a new command line option, -debug, which is meant to unify all of

[oota-llvm.git] / include / Support / Statistic.h

diff --git a/include/Support/Statistic.h b/include/Support/Statistic.h
index 5c464865ed1933bfc61edc25414c97909db5d14e..453af34fe019d91020a1ac5f0bc9347ff5dd116a 100644 (file)
--- a/include/Support/Statistic.h
+++ b/include/Support/Statistic.h
@@ -19,6 +19,27 @@
 
 #include <iosfwd>
 
+// DebugFlag - This boolean is set to true if the '-debug' command line option
+// is specified.  This should probably not be referenced directly, instead, use
+// the DEBUG macro below.
+//
+extern bool DebugFlag;
+
+// DEBUG macro - This macro should be used by passes to emit debug information.
+// In the '-debug' option is specified on the commandline, and if this is a
+// debug build, then the code specified as the option to the macro will be
+// executed.  Otherwise it will not be.  Example:
+//
+// DEBUG(cerr << "Bitset contains: " << Bitset << "\n");
+//
+#ifdef NDEBUG
+#define DEBUG(X)
+#else
+#define DEBUG(X) \
+  do { if (DebugFlag) { X; } } while (0)
+#endif
+
+
 // StatisticBase - Nontemplated base class for Statistic<> class...
 class StatisticBase {
   const char *Name;