I've gotten back as far as here, and it's still bad:
commit 7fbda0e0e8b1d071e72ccbc5e487dbb1c2173c63 (HEAD)
Author: Jonas Maebe <jo...@freepascal.org>
Date: Wed Mar 24 14:33:09 2021 +0000
* support building with FPC 3.2.2
git-svn-id: trunk@49045 -
I can't check earlier without difficulty because 3.2.2 doesn't work.
However the hang (and also an eventual out of memory error) doesn't
occur if -OoNOPEEPHOLE is specified, meaning the problem is located in
the peephole optimizer. So it looks like I'll have to try to debug this
the hard way!
Kit
On 23/04/2024 17:27, J. Gareth Moreton via fpc-devel wrote:
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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