On Fri, Aug 05, 2016 at 02:20:40PM +0930, Alan Modra wrote: > Here are the reload costs for the various alternatives of > movsf_hardfloat: > "=!r, !r, m, f, ww, ww, !r, f, wb, m, wY, wu, Z,?wn, ?r,*c*l, !r, *h" > "r, m, r, f, ww, j, j, m, wY, f, wb, Z, wu, r, wn, r, *h, 0" > 617 609 17 17 8 8 617 9 8 17 17 8 17 23 23 17 617 17
I agree reg-reg moves should come after reg-mem moves, but is it such a good idea to put e.g. f->f after r->*c*l? The costs look in pretty bad shape anyway. I'm not comfortable acking this patch without some more investigation, sorry. Segher
