On Tue, May 18, 2010 at 3:26 PM, Dave Korn <dave.korn.cyg...@gmail.com> wrote: >> >> This however causes an unrecognizable insn error during the compiler >> runtime when I have TARGET_X defined. >> I was expecting the clobbers not to influence the recognition but it >> seems I was wrong. > > Actually, IIUC the clobbers don't influence the recognition, that is > correct, so both those patterns look identical to the recognizer and > effectively only the first one will ever be matched by combine, then too late > the target condition kicks in and the second one pops up and goes "oi, where's > my clobbers?". Or something like that. >
Got it, thanks for the explanation. It makes sense. > I think what you need to do is explicitly (TARGET_X ? gen_call_value_complex > : gen_call_value); DONE in your expander. > So I guess i need something like emit_call_insn(TARGET_X ? gen_call_value_complex(...) : gen_call_value(...)); DONE but what do I pass to the gen_* functions? I don't really have anything to pass to them at this point, I just want gcc to expand those. However if I pass no arguments it claims I haven't passed enough arguments. -- PMatos
