+ CmmLabelDiffOff clbl1 clbl2 i
+ -- WARNING:
+ -- * the lit must occur in the info table clbl2
+ -- * clbl1 must be an SRT, a slow entry point or a large bitmap
+ -- The Mangler is expected to convert any reference to an SRT,
+ -- a slow entry point or a large bitmap
+ -- from an info table to an offset.
+ -> mkW_ <> pprCLabel clbl1 <> char '+' <> int i