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Re: gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?

From: Jakub Jelinek <jakub at redhat dot com>
To: Jim Bos <jim876 at xs4all dot nl>
Cc: Andi Kleen <andi at firstfloor dot org>, Linus Torvalds <torvalds at linux-foundation dot org>, James Cloos <cloos at jhcloos dot com>, Linux Kernel Mailing List <linux-kernel at vger dot kernel dot org>, Andreas Schwab <schwab at redhat dot com>, Michael Matz <matz at suse dot de>, Dave Korn <dave dot korn dot cygwin at gmail dot com>, Richard Guenther <richard dot guenther at gmail dot com>, gcc at gcc dot gnu dot org
Date: Mon, 15 Nov 2010 19:26:27 +0100
Subject: Re: gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?
References: <m31v6nmmr3.fsf@jhcloos.com> <AANLkTim2rCuF4p0719YQ3=0s7jhk5FOuTHHAeBWBhvR=@mail.gmail.com> <20101115085605.GE2583@sunsite.ms.mff.cuni.cz> <20101115100331.GG2583@sunsite.ms.mff.cuni.cz> <20101115105446.GD7269@basil.fritz.box> <20101115111642.GU29412@tyan-ft48-01.lab.bos.redhat.com> <20101115113739.GH7269@basil.fritz.box> <4CE16F86.40808@xs4all.nl> <20101115174449.GW29412@tyan-ft48-01.lab.bos.redhat.com> <4CE1793B.2010109@xs4all.nl>
Reply-to: Jakub Jelinek <jakub at redhat dot com>

On Mon, Nov 15, 2010 at 07:17:31PM +0100, Jim Bos wrote:
>  # gcc -v
> Reading specs from /usr/lib/gcc/i486-slackware-linux/4.5.1/specs
> COLLECT_GCC=gcc
> COLLECT_LTO_WRAPPER=/usr/libexec/gcc/i486-slackware-linux/4.5.1/lto-wrapper
> Target: i486-slackware-linux
> Configured with: ../gcc-4.5.1/configure --prefix=/usr --libdir=/usr/lib
> --mandir=/usr/man --infodir=/usr/info --enable-shared --enable-bootstrap
> --enable-languages=ada,c,c++,fortran,java,objc --enable-threads=posix
> --enable-checking=release --with-system-zlib
> --with-python-dir=/lib/python2.6/site-packages
> --disable-libunwind-exceptions --enable-__cxa_atexit --enable-libssp
> --with-gnu-ld --verbose --with-arch=i486 --target=i486-slackware-linux
> --build=i486-slackware-linux --host=i486-slackware-linux
> Thread model: posix
> gcc version 4.5.1 (GCC)

Does it have any patches applied?  The gcc options look the same as what
I've been already trying earlier.
Thus, can you run gcc with those options on i8k.i and add -fverbose-asm
to make it easier to read and post i8k.s you get?

	Jakub

Follow-Ups:
- Re: gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?
  - From: Jim Bos

References:
- Re: gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?
  - From: James Cloos
- Re: gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?
  - From: Linus Torvalds
- Re: gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?
  - From: Jakub Jelinek
- Re: gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?
  - From: Jakub Jelinek
- Re: gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?
  - From: Andi Kleen
- Re: gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?
  - From: Jakub Jelinek
- Re: gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?
  - From: Andi Kleen
- Re: gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?
  - From: Jim Bos
- Re: gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?
  - From: Jakub Jelinek
- Re: gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?
  - From: Jim Bos

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