CmmFloat f rep -> hsep [ rational f, dcolon, ppr rep ]
CmmLabel clbl -> pprCLabel clbl
CmmLabelOff clbl i -> pprCLabel clbl <> ppr_offset i
+ CmmLabelDiffOff clbl1 clbl2 i -> pprCLabel clbl1 <> char '-'
+ <> pprCLabel clbl2 <> ppr_offset i
pprLit1 lit@(CmmLabelOff clbl i) = parens (pprLit lit)
pprLit1 lit = pprLit lit