- cl::opt<DebugOnlyOpt, true, cl::parser<std::string> >
- DebugOnly("debug-only", cl::desc("Enable a specific type of debug output"),
- cl::Hidden, cl::value_desc("debug string"),
- cl::location(DebugOnlyOptLoc), cl::ValueRequired);
-#endif
+// -debug - Command line option to enable the DEBUG statements in the passes.
+// This flag may only be enabled in debug builds.
+static cl::opt<bool, true>
+Debug("debug", cl::desc("Enable debug output"), cl::Hidden,
+ cl::location(DebugFlag));
+
+// -debug-buffer-size - Buffer the last N characters of debug output
+//until program termination.
+static cl::opt<unsigned>
+DebugBufferSize("debug-buffer-size",
+ cl::desc("Buffer the last N characters of debug output "
+ "until program termination. "
+ "[default 0 -- immediate print-out]"),
+ cl::Hidden,
+ cl::init(0));
+
+static std::string CurrentDebugType;
+
+namespace {
+
+struct DebugOnlyOpt {
+ void operator=(const std::string &Val) const {
+ DebugFlag |= !Val.empty();
+ CurrentDebugType = Val;
+ }
+};
+
+}
+
+static DebugOnlyOpt DebugOnlyOptLoc;
+
+static cl::opt<DebugOnlyOpt, true, cl::parser<std::string> >
+DebugOnly("debug-only", cl::desc("Enable a specific type of debug output"),
+ cl::Hidden, cl::value_desc("debug string"),
+ cl::location(DebugOnlyOptLoc), cl::ValueRequired);
+
+// Signal handlers - dump debug output on termination.
+static void debug_user_sig_handler(void *Cookie) {
+ // This is a bit sneaky. Since this is under #ifndef NDEBUG, we
+ // know that debug mode is enabled and dbgs() really is a
+ // circular_raw_ostream. If NDEBUG is defined, then dbgs() ==
+ // errs() but this will never be invoked.
+ llvm::circular_raw_ostream *dbgout =
+ static_cast<llvm::circular_raw_ostream *>(&llvm::dbgs());
+ dbgout->flushBufferWithBanner();