> From: Jeff Law [mailto:l...@redhat.com] > Sent: Saturday, May 23, 2015 6:54 AM > > > > - if (!can_move_invariant_reg (loop, inv, reg)) > > + if (!can_move_invariant_reg (loop, inv, dest)) > Won't this run into into the same problem if DEST is a SUBREG?
One of the very first test in can_move_invariant_reg is: if (!REG_P (reg) || !HARD_REGISTER_P (reg)) return false; So in case of a subreg the insn will not be moved which will execute the same code as before my patch. It would be nicer if it could work with subreg of course but this makes for a much smaller and safer patch. Best regards, Thomas
