[Bug rtl-optimization/24762] [killloop-branch] code motion of non-invariant expressions with hard registers.
pinskia at gcc dot gnu dot org
gcc-bugzilla@gcc.gnu.org
Wed Nov 9 21:08:00 GMT 2005
------- Comment #3 from pinskia at gcc dot gnu dot org 2005-11-09 21:08 -------
This is not an ia64 specific issue as far as I can see, on x86_64, we get:
(note 64 61 62 2 [bb 2] NOTE_INSN_BASIC_BLOCK)
(insn 62 64 63 2 (set (reg:DI 63)
(reg:DI 0 ax)) -1 (nil)
(nil))
(insn 63 62 53 2 (set (reg:DI 65)
(reg:DI 1 dx)) -1 (nil)
(nil))
so those could also be moved above the loop also (if you change the cost).
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24762
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