On Thursday 10 January 2008, Carmelo AMOROSO wrote: > Mike Frysinger wrote: > > On Tuesday 04 December 2007, Carmelo AMOROSO wrote: > >> Paul Mundt wrote: > >>> On Mon, Dec 03, 2007 at 10:33:39PM +0100, Carmelo Amoroso wrote: > >>>> Carmelo Amoroso wrote: > >>>> while doing some test for SH4 to measure size increase for 'always > >>>> inline' changes, doscovered suddenly that gcc-4.1.1 (cross sh4) fails > >>>> with the following error: > >>>> > >>>> ../ldso/ldso/dl-elf.c: In function '_dl_dprintf': > >>>> ../ldso/ldso/dl-elf.c:858: error: unable to find a register to spill > >>>> in class 'R0_REGS' ../ldso/ldso/dl-elf.c:858: error: this is the insn: > >>>> (insn 916 917 24 1 (set (reg/f:SI 1 r1 [219]) > >>>> (mem/u/c:SI (plus:SI (reg:SI 12 r12) > >>>> (reg/f:SI 1 r1 [220])) [0 S4 A32])) 172 {movsi_ie} > >>>> (nil) (expr_list:REG_DEAD (reg/f:SI 1 r1 [220]) > >>>> (expr_list:REG_EQUIV (symbol_ref:SI ("_dl_pagesize") > >>>> <var_decl 0x313a720 _dl_pagesize>) (nil)))) > >>>> > >>>> either running with -Os or -O0. > >>>> I'll test tomorrow with gcc-4.2.1 to see if it makes difference, > >>>> otherwise I suspect we should go back on my proposal in using always > >>>> inline only for arch strictly requiring it. > >>> > >>> We've noticed this with some versions in buildroot also, so it seems to > >>> be a more common issue: > >> > >> Indeed at home I have gcc from buildroot. Tested just now at office > >> using gcc-4.2.1 from STMicro toolchain > >> and it works fine, either using -O0 or -Os. > >> I'll try to update buildroot at home with gcc 4.2.1 as well and see if > >> it solves. > >> I'll keep you informed. > > > > so what's up ? bug in gcc ? PR opened up stream ? reduced test case > > made ? > > yes is a bug in gcc. It seems that there is already a bug filed > (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28618#c13) > but I'm not sure. gcc-4.2.1 from ST toolchain works fine. I've asked to > our compiler team if it's possible to identify > the single required to solve this. > Also I have filed a bug to track this. See > https://bugzilla.stlinux.com/show_bug.cgi?id=3093
thanks ... didnt want it to get lost in the shuffle :) -mike
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