http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59880
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2014-01-19
CC| |uros at gcc dot gnu.org
Summary|Improve REE for implicit |ix86_avoid_lea_for_addr is
|SI->DI zero-extend |buggy
Ever confirmed|0 |1
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ah, indeed, it is split because of the:
(define_insn_and_split "*lea<mode>"
[(set (match_operand:SWI48 0 "register_operand" "=r")
(match_operand:SWI48 1 "address_no_seg_operand" "Ts"))]
splitter. I'd say it is a bug in ix86_avoid_lea_for_addr, that shouldn't have
returned true in this case, where the second operand is (zero_extend:DI
(reg:SI)).
