diff --git a/include/llvm/CodeGen/RegAllocCommon.h b/include/llvm/CodeGen/RegAllocCommon.h
new file mode 100644
index 00000000000..f7c30e6d58f
--- /dev/null
+++ b/include/llvm/CodeGen/RegAllocCommon.h
@@ -0,0 +1,23 @@
+//===-- RegAllocCommon.h --------------------------------------------------===//
+// 
+//  Shared declarations for register allocation.
+// 
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_REGALLOCCOMMON_H
+#define LLVM_CODEGEN_REGALLOCCOMMON_H
+
+#include "Support/CommandLine.h"
+
+enum RegAllocDebugLevel_t {
+  RA_DEBUG_None         = 0,
+  RA_DEBUG_Results      = 1,
+  RA_DEBUG_Coloring     = 2,
+  RA_DEBUG_Interference = 3,
+  RA_DEBUG_LiveRanges   = 4,
+  RA_DEBUG_Verbose      = 5
+};
+
+extern RegAllocDebugLevel_t DEBUG_RA;
+
+#endif
diff --git a/lib/CodeGen/RegAlloc/RegAllocCommon.h b/lib/CodeGen/RegAlloc/RegAllocCommon.h
new file mode 100644
index 00000000000..f7c30e6d58f
--- /dev/null
+++ b/lib/CodeGen/RegAlloc/RegAllocCommon.h
@@ -0,0 +1,23 @@
+//===-- RegAllocCommon.h --------------------------------------------------===//
+// 
+//  Shared declarations for register allocation.
+// 
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_REGALLOCCOMMON_H
+#define LLVM_CODEGEN_REGALLOCCOMMON_H
+
+#include "Support/CommandLine.h"
+
+enum RegAllocDebugLevel_t {
+  RA_DEBUG_None         = 0,
+  RA_DEBUG_Results      = 1,
+  RA_DEBUG_Coloring     = 2,
+  RA_DEBUG_Interference = 3,
+  RA_DEBUG_LiveRanges   = 4,
+  RA_DEBUG_Verbose      = 5
+};
+
+extern RegAllocDebugLevel_t DEBUG_RA;
+
+#endif
diff --git a/lib/Target/SparcV9/RegAlloc/RegAllocCommon.h b/lib/Target/SparcV9/RegAlloc/RegAllocCommon.h
new file mode 100644
index 00000000000..f7c30e6d58f
--- /dev/null
+++ b/lib/Target/SparcV9/RegAlloc/RegAllocCommon.h
@@ -0,0 +1,23 @@
+//===-- RegAllocCommon.h --------------------------------------------------===//
+// 
+//  Shared declarations for register allocation.
+// 
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_REGALLOCCOMMON_H
+#define LLVM_CODEGEN_REGALLOCCOMMON_H
+
+#include "Support/CommandLine.h"
+
+enum RegAllocDebugLevel_t {
+  RA_DEBUG_None         = 0,
+  RA_DEBUG_Results      = 1,
+  RA_DEBUG_Coloring     = 2,
+  RA_DEBUG_Interference = 3,
+  RA_DEBUG_LiveRanges   = 4,
+  RA_DEBUG_Verbose      = 5
+};
+
+extern RegAllocDebugLevel_t DEBUG_RA;
+
+#endif