Jim Wilson <[EMAIL PROTECTED]> writes: > Dave Korn wrote: >> But it is ok to use a define_expand (that accepts all alternatives) for >> movsf and use that to generate one of several movsf_XXXX insns, isn't it? > > Reload doesn't use the move define_expands. It can't. A define_expand > is allowed to do stuff like generate new RTL that would completely mess > up what reload is trying to do.
That isn't unconditionally true, is it? reload1.c:gen_reload uses gen_move_insn, which is just a start_sequence/end_sequence wrapper for emit_move_insn_1, which in turn calls the move expanders. Richard
