On 02/11/2012 07:09 AM, Uros Bizjak wrote: > On Sat, Feb 11, 2012 at 1:26 AM, Richard Henderson <r...@redhat.com> wrote: >> On 02/09/2012 03:47 PM, Uros Bizjak wrote: >>> 2012-02-10 Uros Bizjak <ubiz...@gmail.com> >>> >>> * compare-elim.c (find_comparisons_in_bb): Eliminate only compares >>> having mode compatible with the mode of previous compare. Substitute >>> compare mode of previous compare with the mode, compatible >>> with eliminated and previous compare. >> >> This patch is ok for 4.8. > > Unfortunately, we need to update all uses of flag register with a new, > compatible mode, as well, similar to how compatible mode is handled in > CSE2 pass with cse_condition_code_reg in cse.c
We do? What subsequent pass really cares? What goes wrong leaving things as they are? r~
