Re: Trying to track down problem with packed.com from testsuite

[john o goyo]

Greetings, Gaius.

On 2024-08-11 14:30, Gaius Mulley wrote (in part):
> john o goyo <jog37@riddermarkfarm.ca> writes:
>
> > Greetings, Gaius.
> >
> > Here is an oddity:
> >
> > [~/opt/gm2/testsuite]=> gm2-14 -c -O -fomit-frame-pointer
> > -finline-functions -fiso packed.mod
> > [~/opt/gm2/testsuite]=> gm2-14 -c -O0 -fomit-frame-pointer
> > -finline-functions -fiso packed.mod
> > [~/opt/gm2/testsuite]=> gm2-14 -c -O1 -fomit-frame-pointer
> > -finline-functions -fiso packed.mod
> > [~/opt/gm2/testsuite]=> gm2-14 -c -O2 -fomit-frame-pointer
> > -finline-functions -fiso packed.mod
> > gm2: internal compiler error: Segmentation Fault signal terminated
> > program cc1gm2
> > Please submit a full bug report, with preprocessed source (by using
> > -freport-bug).
> > See <https://gcc.gnu.org/bugs/> for instructions.
> > [~/opt/gm2/testsuite]=> gm2-14 -c -Ofast -fomit-frame-pointer
> > -finline-functions -fiso packed.mod
> > gm2: internal compiler error: Segmentation Fault signal terminated
> > program cc1gm2
> > Please submit a full bug report, with preprocessed source (by using
> > -freport-bug).
> > See <https://gcc.gnu.org/bugs/> for instructions.
> >
> > Basically, optimisation level 2 and above causes problems.
> >
> > I am trying to chase down the problem but I have clue where the gm2
> > compilation starts. Please inform me on which function to break.
> >
> > Sincerely,
> > john
> Hi John,
>
> that is an interesting observation.
>
> One way to debug is to set a break point on: gimplify_function_tree(tree_node*)
>
> which is called by the front end at each end of function when the
> statement tree is complete.  The statement tree can be dumped as follows
> below.  For small test programs this can be useful - even to see which
> function causes the sigsegv.  You can also dump the gimple IR via
> command line -fm2-dump=all.

Your option is not recognised:

[~/opt/gm2/testsuite]=> gm2-14 -c -O1 -fomit-frame-pointer 
-finline-functions -fiso -fm2-dump=all packed.mod
gm2: error: unrecognized command-line option "-fm2-dump=all"

Remember that I am using gm2-14.2.0.

Sincerely,
john