http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54963
--- Comment #3 from Oleg Endo <olegendo at gcc dot gnu.org> 2012-10-28 23:01:24 UTC --- Created attachment 28551 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28551 Proposed patch This patch fixes the problem, by using 'emit_move_insn' instead of manually doing the DImode reg copy. I've seized the moment and refactored the abs patterns -- the T_REG clobber handling was a bit confusing and using mode iterators saves a few lines. Kaz, could you please have a look at this one? Only briefly tested with make-gcc and compiling CSiBE. There are no code size changes in the CSiBE set, except for one: jikespg-1.3 src/prntstat 3576 -> 3568 -8 / -0.223714 % I guess it's the T_REG clobber thing that has a positive impact on register allocation in this case.
