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Re: Bug#254626: gcc-3.3: wrong optimization on sparc32 when building linux kernel

On Sat, Jun 19, 2004 at 12:27:49PM +0200, Matthias Klose wrote:
> Do you know earlier gcc versions not showing the miscompilation?
> Please can you recheck with gcc-3.4 (found in the experimental
> distribution, or http://http.us.debian.org/debian/pool/main/g/gcc-3.4/)
> Thanks, Matthias

These are all the versions I tried:
ii  gcc-2.95                  2.95.4-22                 The GNU C compiler
ii  gcc-3.2                   3.2.3-9                   The GNU C compiler
ii  gcc-3.3                   3.3.4-1                   The GNU C compiler
ii  gcc-3.4                   3.4.0-2                   The GNU C compiler

Out of these, only the kernel compiled with gcc-2.95 boots when using the -Os
gcc-3.2 and gcc-3.3 work ok when using the -O2 option. I have not tried
that on gcc-3.4, but I expect that to work as far as this issue is concerned.

When I get some time I'll try turning on the flags one by one that -Os
turns off, e.g. -Os -falign-functions. Hope that will work as expected and
narrow down the problem.


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