[fpc-devel] error target i386 -Cp80486

[J. Gareth Moreton]

I've reproduced the hang doing "make clean all CPU_TARGET=i386 
OS_TARGET=win32 OPT="-Cp80486 -Op80486"" on my x86_64-win64 machine.

So far I haven't found the bad commit - this problem has been here a while.

Kit

I still haven't found the bad commit!

On 23/04/2024 12:46, J. Gareth Moreton via fpc-devel wrote:
> Absolutely I can.  I'll see what I can find.
>
> Gareth aka. Kit
>
> On 23/04/2024 12:09, Tomas Hajny via fpc-devel wrote:
>> On 2024-04-23 11:50, Marģers . via fpc-devel wrote:
>>> 1) does not work
>>> make clean singlezipinstall OS_TARGET=win32 CPU_TARGET=i386
>>> ALLOW_WARNINGS=1 OPT="  -O2 -vxitl -Cp80486 -Op80486"
>>>
>>> hangs on
>>> system.inc(421,2) Start reading includefile
>>> C:\Users\Lietotajs\Downloads\fora\a\486\gh\rtl\inc\generic.inc
>>  .
>>  .
>>
>> Indeed. This is clearly an issue related to optimizations. The 
>> important point missing here is that it happens when compiling with 
>> ppc1.exe. I just tried building a trunk compiler (make rtl_all 
>> compiler_all) with "OPT=-O- -Cp80486 -Op80486" and then started 
>> another compilation round with compiler built this way, but using -O2 
>> this time, in order to make sure that it wasn't an optimization bug 
>> in the released 3.2.2 compiler. The new compilation round (using a 
>> non-optimized compiler) hangs at an exactly the same place, i.e. it's 
>> a bug (probably endless loop?) in the optimization code specific to 
>> the trunk compiler. @Gareth, could you please have a look at it?
>>
>> Tomas
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