(define_insn "loadsf"
[(set (match_operand:SF 0 "register_operand" "=r")
(mem:SF (match_operand:SI 1 "immediate_operand" "m")))]
This makes no sense, because the constraint means that the mem's operand
is an immediate before reload (and you want it to be a register), and a
mem after reload. What you want is something like
(mem:SF (match_operand:SI 1 "general_operand" "r")))]
which means "the address can be a general operand, but after reload we
only accept registers here", or
(mem:SF (match_operand:SI 1 "register_operand" "r")))]
Why can't I create a new register? So how should I do to implement it?
You can create new registers only at special places. GCC tries passing
a SYMBOL_REF to gen_mov<mode>. To convert it, use a define_expand.
Paolo
