------- Additional Comments From andrewhutchinson at cox dot net 2005-02-08 01:48 ------- I ran testcase with proposed avr_costs patch applied. The result is unchanged.
The initially generated RTL is unfortunately beyond that which can be fixed by backend. I dont think this problem is avr specific, it should appear on other targets. I have attached initially generated RTL. It is alarmingly complex given starting point. (This is not so apparent in the assembler as the backend has done a rather good job of tidying up what it can.) Perhaps somebody could glance at this to see what exactly went off the rails. It might just be a manifestation of a known problem. Wish I could help more - but trees are beyond me at the moment. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19686
