Add extra sign extension to the same bit width before int sign
extension to another bit width. This is needed to get correct singed value.
Patch by Artur Pietrek!

llvm-svn: 75629
diff --git a/llvm/lib/Target/MSIL/MSILWriter.h b/llvm/lib/Target/MSIL/MSILWriter.h
index 2ef8a85..ea0dfad 100644
--- a/llvm/lib/Target/MSIL/MSILWriter.h
+++ b/llvm/lib/Target/MSIL/MSILWriter.h
@@ -187,7 +187,7 @@
     void printIndirectSave(const Type* Ty);
 
     void printCastInstruction(unsigned int Op, const Value* V,
-                              const Type* Ty);
+                              const Type* Ty, const Type* SrcTy=0);
 
     void printGepInstruction(const Value* V, gep_type_iterator I,
                              gep_type_iterator E);