Re: ICE with your gcc 3.3 toolchain

[Bernardo Innocenti <bernie at develer dot com>]

(I've Cc'd this reply to all involved people and on the GCC ml)

Christophe Fergeau wrote:

> I have been working on a 5249 based board for a few months, and have
> been using a 2.95 toolchain until now. I decided to try your gcc 3.3
> toolchain today, for that I downloaded
> m68k-elf-tools-gcc3.3.1-20030807.sh from your website.
> I ran make clean in my uClinux-dist directory, and rerun make using the
> new toolchain, and I got an internal compiler error when it tried to
> compile uClibC. Here is the output:

Yes, this has already been reported in the past. It appears to be
a bug somewhere in the reload phase of GCC. I thought it had
already been fixed by this ugly patch:

  http://www.develer.com/uclinux/uclinux-elf-tools/gcc-3.3.1-coldfire-reload.patch

Peter Barada was investigating the ICE with other GCC developers.

Another work-around to get it to work is removing '-O2' from
uClibc's Makefile. The '-Os' flag passed from the top-level
Makefile will then be used instead.


> m68k-elf-gcc  -Wall -Wstrict-prototypes -Wno-trigraphs
> -fno-strict-aliasing  -Os  -m5200 -O2 -g -fomit-frame-pointer
> -fno-builtin -msep-data -DEMBED
> -I/home/teuf/Work/PikaPlatform/uClinux-dist/lib/uClibc/include
> -I/home/teuf/Work/PikaPlatform/uClinux-dist -Dlinux -D__linux__
> -D__uClinux__ -Dunix
> -I/home/teuf/Work/PikaPlatform/uClinux-dist/linux-2.4.x/include  
> -fno-builtin -nostdinc -D_LIBC -I../../include -I.
> -I/usr/local/lib/gcc-lib/m68k-elf/3.3.1/include -DNDEBUG -msoft-float
> -fPIC -DL__dtostr printf.c -c -o _dtostr.o
> printf.c: In function `_dtostr':
> printf.c:2004: error: insn does not satisfy its constraints:
> (insn 1525 541 542 34 (nil) (set (reg:QI 8 %a0)
>         (mem:QI (plus:SI (reg/f:SI 15 %sp)
>                 (const_int 67 [0x43])) [0 mode S1 A8])) 37
> {*m68k.md:1060} (nil)    (nil))
> printf.c:2004: internal compiler error: in reload_cse_simplify_operands,
> at reload1.c:8350
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <URL:http://gcc.gnu.org/bugs.html> for instructions.
>
> My uClibc has the tag uClinux-dist-20030522.

Please note that erlier uClinux distributions require several
trivial fixes in order to build everything with GCC 3.3.x.
The latest stable distribution already contains all required
patches.


> I don't know if this report is of any use to you, I just thought I'd
> give you some feedback about your work :)

Thank you very much!


> Thanks for working on this toolchain,

My pleasure :)

--
 // Bernardo Innocenti - Develer S.r.l., R&D dept.
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