http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51821
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
AssignedTo|unassigned at gcc dot |ebotcazou at gcc dot
|gnu.org |gnu.org
--- Comment #7 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-01-11
22:03:16 UTC ---
> RTL infrastructure bug, adding some CCs that might find it interesting.
Ugh. The problem is that the df_simulate_* routines don't correctly handle
hard registers. Oddly enough, there is an isolated use of hard_regno_nregs in
the df_simulate_one_insn_forwards routine, but with no comment whatsoever.
We need to do something, but the impact of the change isn't very clear.
