Eric, do you have a hint what could cause romcc to produce incorrect code without -fno-simplify-phi ?
Stefan On 4/26/10 4:23 PM, Myles Watson wrote: > On Mon, Apr 26, 2010 at 7:43 AM, Stefan Reinauer <[email protected]> > wrote: > >> On 4/26/10 3:34 PM, Myles Watson wrote: >> >>>> The problem with Truxton booting in trunk seems to have appeared in the >>>> migration to the new Makefile system. >>>> >>>> If I drop a CONFIG_SSE=y into the .config file using a trunk build I can >>>> boot! >>>> >>>> However, I don't really see how this flag gets set. Doing a 'grep -RH >>>> CONFIG_SSE' points to the two makefile includes that add the enable_sse >>>> code, but no references to setting the flag. >>>> >>>> >>> I added it in 5505. I think we should put an #error in the file that >>> uses these instructions if CONFIG_SSE isn't set. >>> >>> >> There is no specific instruction in our code causing this, but a hard >> code of ROMCCFLAGS in mainboard/intel/truxton/Makefile.inc: >> > I forgot that romcc was using the SSE registers. > > >> ROMCCFLAGS := -mcpu=p4 -fno-simplify-phi -O2 >> > Without the line it fails to build. > > It builds with this line: > ROMCCFLAGS += -fno-simplify-phi > > With this line it fails to allocate enough registers: > ROMCCFLAGS := -fno-simplify-phi -O2 > > Thanks, > Myles > > -- coresystems GmbH • Brahmsstr. 16 • D-79104 Freiburg i. Br. Tel.: +49 761 7668825 • Fax: +49 761 7664613 Email: [email protected] • http://www.coresystems.de/ Registergericht: Amtsgericht Freiburg • HRB 7656 Geschäftsführer: Stefan Reinauer • Ust-IdNr.: DE245674866 -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
