diff --git a/include/llvm/Target/TargetMachine.h b/include/llvm/Target/TargetMachine.h
index 3b128b0a469..db3fc206a96 100644
--- a/include/llvm/Target/TargetMachine.h
+++ b/include/llvm/Target/TargetMachine.h
@@ -38,11 +38,13 @@ public:
   
 protected:
   TargetMachine(const std::string &targetname, // Can only create subclasses...
+                unsigned char IntRegSize = 8,
 		unsigned char PtrSize = 8, unsigned char PtrAl = 8,
 		unsigned char DoubleAl = 8, unsigned char FloatAl = 4,
 		unsigned char LongAl = 8, unsigned char IntAl = 4,
 		unsigned char ShortAl = 2, unsigned char ByteAl = 1)
-    : TargetName(targetname), DataLayout(targetname, PtrSize, PtrAl,
+    : TargetName(targetname), DataLayout(targetname, IntRegSize,
+                                         PtrSize, PtrAl,
 					 DoubleAl, FloatAl, LongAl, IntAl, 
 					 ShortAl, ByteAl) { }
 public: