Hi,
I may have found a bug when I was trying to port my private backend to new LRA
pass (using gcc 4.9.2+patches).
In lra-constraints.c, in function simple_move_p, the target hook
targetm.register_move_cost is called with two badly swapped parameters :
targetm.register_move_cost (GET_MODE (src), sclass, dclass)
should be :
targetm.register_move_cost (GET_MODE (src), dclass, sclass)
In my port of GCC it leads to an error when checking constrain_operands at the
end of LRA pass
Regards,
Selim Belbachir