%
% (c) The GRASP Project, Glasgow University, 1992-1998
%
-% $Id: CgRetConv.lhs,v 1.29 2000/11/14 17:41:04 sewardj Exp $
+% $Id: CgRetConv.lhs,v 1.31 2002/01/28 16:52:37 simonpj Exp $
%
\section[CgRetConv]{Return conventions for the code generator}
ctrlReturnConvAlg tycon
= case (tyConFamilySize tycon) of
- 0 -> pprPanic "ctrlRetConvAlg" (ppr tycon)
size -> -- we're supposed to know...
if (size > (1::Int) && size <= mAX_FAMILY_SIZE_FOR_VEC_RETURNS) then
VectoredReturn size
else
- UnvectoredReturn size
+ UnvectoredReturn size
+ -- NB: unvectored returns Include size 0 (no constructors), so that
+ -- the following perverse code compiles (it crashed GHC in 5.02)
+ -- data T1
+ -- data T2 = T2 !T1 Int
+ -- The only value of type T1 is bottom, which never returns anyway.
\end{code}
%************************************************************************
dataReturnConvPrim IntRep = VanillaReg IntRep (_ILIT 1)
dataReturnConvPrim WordRep = VanillaReg WordRep (_ILIT 1)
+dataReturnConvPrim Int32Rep = VanillaReg Int32Rep (_ILIT 1)
+dataReturnConvPrim Word32Rep = VanillaReg Word32Rep (_ILIT 1)
dataReturnConvPrim Int64Rep = LongReg Int64Rep (_ILIT 1)
dataReturnConvPrim Word64Rep = LongReg Word64Rep (_ILIT 1)
dataReturnConvPrim AddrRep = VanillaReg AddrRep (_ILIT 1)