------- Comment #28 from steven at gcc dot gnu dot org 2009-06-14 19:54 ------- Created an attachment (id=17995) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=17995&action=view) Patch agains r148322, works pre-RA only
Joern's original ifcvt.c patch only dealt with pre-reload if-conversion. The subsequent changes to make struct-equiv work for crossjumping and after reload, made the code too complicated IMHO. So I've gone back to the roots of the patch. I've simplified things a bit -- mostly by using the DF machinery. This new attached patch is far from complete though. The struct-equiv code should use rtx_equal_p_cb, but the rtx_equal_p_cb needs to be modified first (to be more like for_each_rtx: 3-state and passing around a pointer to auxiliary data). The local_reg_p stuff should probably go into df-problems.c as a _p function. And so on. But the patch does work. I wanted to let folks now that this bug is not yet forgotten! -- steven at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|unassigned at gcc dot gnu |steven at gcc dot gnu dot |dot org |org Status|NEW |ASSIGNED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20070