http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14483
Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |4.8.0
--- Comment #4 from Steven Bosscher <steven at gcc dot gnu.org> 2012-10-25
23:36:13 UTC ---
(In reply to comment #2)
> The problem with extending cse_condition_code_reg() in cse.c is that
> we have to determine the result of "testl", (reg 17) dies at the conditional
> jump insn, but cse_condition_code_reg() is run before the flow analysis.
> So we don't have liveness information. If this is to be implemented,
> we may have to do this after the combine or something.
This is not a problem anymore since the DF merge. Liveness is now
available (and used) in all CSE passes.
