[project @ 2001-05-04 08:09:42 by simonpj]

[project @ 2001-05-04 08:09:42 by simonpj]
****	MERGE WITH 5.00 BRANCH     ********

	--------------------------------
	Make CPR work only for small products
	--------------------------------

GHC was barfing when doing CPR for programs involving very large
products.  A one-line fix in MkId.mkDataCon makes it only do CPR for
smaller products (I chose 10).  Comments

-- We do not treat very big tuples as CPR-ish:
--	a) for a start we get into trouble because there aren't
--	   "enough" unboxed tuple types (a tiresome restriction,
--	   but hard to fix),
--	b) more importantly, big unboxed tuples get returned mainly
--	   on the stack, and are often then allocated in the heap
--	   by the caller.  So doing CPR for them may in fact make
--	   things worse.

This should fix the error
	Failed to find interface decl for
		PrelGHC.(#,,,,,,,,,,,,,,,,,,,,,,,,
			  ,,,,,,,,,,,,,,,,,,,,,,,,,,,
			  ,,,,,,,,,,,,,,,,,,,,,,,#)

I hope.