You'll have to be more specific.
Sorry -- I realise now that I was a bit vague.
[one might infer this is the `attribute unused' aversion that has
been bantered about]
In extract_sfmt_break (which is a typical instruction which has no
operands), CGEN includes the following:
CGEN_INSN_INT insn = entire_insn;
This is never used by the extraction routine.
Ben