[new-regalloc-branch] bootstrap failure on SPARC

[Daniel Berlin]

Dan Nicolaescu <dann@ics.uci.edu> writes:

> Daniel Berlin <dan@cgsoftware.com> writes:
> 
>   > Dan Nicolaescu <dann@godzilla.ICS.UCI.EDU> writes:
>   > 
>   > > On sparc-sun-solaris2.8
>   > > 
>   > > configured with:
>   > > 
>   > > configure --disable-nls --disable-multilib --enable-languages=c
>   > > 
>   > > I get:
>   > > 
>   > > stage1/xgcc -Bstage1/ -B/home/dann/gcc-newRA/sparc-sun-solaris2.8/bin/ -c  -DIN_GCC    -g -O2 -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wtraditional -pedantic -Wno-long-long  -DHAVE_CONFIG_H    -I. -I. -I../../gcc-CVS/gcc -I../../gcc-CVS/gcc/. -I../../gcc-CVS/gcc/config -I../../gcc-CVS/gcc/../include ../../gcc-CVS/gcc/cpplex.c -o cpplex.o
>   > > ../../gcc-CVS/gcc/cpplex.c: In function `cpp_parse_escape':
>   > > ../../gcc-CVS/gcc/cpplex.c:1883: Internal compiler error in subreg_hard_regno, at emit-rtl.c:713
>   > > Please submit a full bug report,
>   > > with preprocessed source if appropriate.
>   > > See <URL: http://www.gnu.org/software/gcc/bugs.html > for instructions.
>   > > 
>   > > about 20 or so other files fail at this stage with the same ICE in subreg_hard_regno, at emit-rtl.c:713
>   > > all other files are compiled without an error. 
>   > Whee.
>   > This is because denis removed a supposedly incorrect test in
>   > get_free_reg.
>   > I don't think it was really incorrect.
>   > Reverting his patch makes these failures go away.
>   > Denis, what exactly about the get_free_reg test was incorrect?
> 
> [Did you intend to Cc: Denis on this message? He is not in the Cc:
> list... ]
Yes.
I thought I did.
Oh well.

> 
> After reverting that change there's a different it crashes earlier:
> 
> ./xgcc -B./ -B/home/dann/gcc-newRA/sparc-sun-solaris2.8/bin/ -isystem /home/dann/gcc-newRA/sparc-sun-solaris2.8/include -O2    -DIN_GCC    -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -isystem ./include  -fPIC -g1 -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED  -I. -I. -I../../gcc-CVS/gcc -I../../gcc-CVS/gcc/. -I../../gcc-CVS/gcc/config -I../../gcc-CVS/gcc/../include  -DL_muldi3 -c ../../gcc-CVS/gcc/libgcc2.c -o libgcc/./_muldi3.o
> cc1: warning: changing search order for system directory "include"
> cc1: warning:   as it has already been specified as a system directory
> ../../gcc-CVS/gcc/libgcc2.c: In function `__muldi3':
> ../../gcc-CVS/gcc/libgcc2.c:367: Unrecognizable insn:
> (insn 3172 1609 3175 (set (mem:SI (plus:SI (reg/f:SI 30 %fp)
>                 (const_int -4100 [0xffffffffffffeffc])) 0)
>         (subreg:SI (reg/v:DI 111) 4)) -1 (nil)
>     (nil))
> ../../gcc-CVS/gcc/libgcc2.c:367: Internal compiler error in extract_insn, at recog.c:2127
> 

I wonder why reload didn't fix this for us.

> 
>         --dan

-- 
"I looked out my apartment window, and I saw a bird wearing
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I don't know who thought this stuff up, but it certainly wasn't
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