Add support for explicit calling conventions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21745 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Function.h

@@ -66,6 +66,7 @@ private:
   ArgumentListType ArgumentList;        // The formal arguments
 
   SymbolTable *SymTab;
+  unsigned CallingConvention;
 
   friend class SymbolTableListTraits<Function, Module, Module>;
 
@@ -106,6 +107,12 @@ public:
   unsigned getIntrinsicID() const;
   bool isIntrinsic() const { return getIntrinsicID() != 0; }
 
+  /// getCallingConv()/setCallingConv(uint) - These method get and set the
+  /// calling convention of this function.  The enum values for the known
+  /// calling conventions are defined in CallingConv.h.
+  unsigned getCallingConv() const { return CallingConvention; }
+  void setCallingConv(unsigned CC) { CallingConvention = CC; }
+
   /// renameLocalSymbols - This method goes through the Function's symbol table
   /// and renames any symbols that conflict with symbols at global scope.  This
   /// is required before printing out to a textual form, to ensure that there is