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Re: Running the compat testsuite in "non-mirror" mode
> I'm sorry, I still don't understand what you mean my mirror and non-mirror
> modes.
OK, sorry for being obtuse.
The compat testsuite is currently automatically run only once, in what I call
mirror mode, that is the newly built compiler is tested against (an identical
copy of) itself. While this is useful for catching problems in the
argument/return value handling machinery of the back-end, this is only
moderately useful for compatibility purposes. Of course this is
customizable, but only externally (i.e. manually or with an external Makefile
for example).
What I would like to have is the possibility to automatically run (i.e. with a
bare make -k check-gcc) the compat testsuite twice, once in the mirror mode
described above and once in a non-mirror mode. The latter would mean that
the newly built compiler is tested against a slight variation of itself, i.e.
typically with a non-default option, that could have an impact on the calling
conventions, turned on. So it would be possible to specify in the compat
testsuite harness (e.g. a platform-specific driver) that it should be
automatically run twice on a particular platform, in mirror mode and with an
hardcoded pair (-mfoo/-mno-foo) of options.
--
Eric Botcazou