[PATCH V3][gcc] libgccjit: introduce version entry points

[David Malcolm]

On Wed, 2020-03-18 at 23:51 +0100, Andrea Corallo wrote:
> Hi all,
> 
> Updated version of the patch mainly addressing comments on the
> concurrency issues.
> 
> I came to the conclusions that the caching should be done in the
> function that we decide to be thread safe.  However I haven't touched
> parse_basever in any direction in the hope of having this still in
> stage4.  As result I've mostly applied the mutex solution.
> 
> 'make check-jit' runs clean
> 
> Bests
> 
>   Andrea
> 
> gcc/jit/ChangeLog
> 2020-??-??  Andrea Corallo  <andrea.corallo@arm.com>
> 	    David Malcolm  <dmalcolm@redhat.com>
> 
> 	* docs/topics/compatibility.rst (LIBGCCJIT_ABI_13): New ABI tag
> 	plus add version paragraph.
> 	* libgccjit++.h (namespace gccjit::version): Add new namespace.
> 	* libgccjit.c (gcc_jit_version_major, gcc_jit_version_minor)
> 	(gcc_jit_version_patchlevel): New functions.
> 	* libgccjit.h (LIBGCCJIT_HAVE_gcc_jit_version): New macro.
> 	(gcc_jit_version_major, gcc_jit_version_minor)
> 	(gcc_jit_version_patchlevel): New functions.
> 	* libgccjit.map (LIBGCCJIT_ABI_13) New ABI tag.
> 
> gcc/testsuite/ChangeLog
> 2020-??-??  Andrea Corallo  <andrea.corallo@arm.com>
> 
> 	* jit.dg/test-version.c: New testcase.
> 	* jit.dg/all-non-failing-tests.h: Add test-version.c.

> diff --git a/gcc/testsuite/jit.dg/all-non-failing-tests.h b/gcc/testsuite/jit.dg/all-non-failing-tests.h
> index 0272e6f846f..cba4ac51cc9 100644
> --- a/gcc/testsuite/jit.dg/all-non-failing-tests.h
> +++ b/gcc/testsuite/jit.dg/all-non-failing-tests.h
> @@ -8,6 +8,13 @@
>     hooks provided by each test case.  */
>  #define COMBINED_TEST
>  
> +/* test-version.c */
> +#define create_code create_code_version
> +#define verify_code verify_code_version
> +#include "test-version.c"
> +#undef create_code
> +#undef verify_code
> +
>  /* test-accessing-bitfield.c */
>  #define create_code create_code_accessing_bitfield
>  #define verify_code verify_code_accessing_bitfield

Please add the new test to the header in its alphabetical location,
i.e. between:

  /* test-vector-types.cc: We don't use this, since it's C++.  */

and

  /* test-volatile.c */

An entry also needs to be added to the "testcases" array at the end of
the header (again, in the alphabetical-sorted location).

OK by me with that change (assuming you re-test the patch), but given
we're in stage 4, it's probably worth double-checking with a release
manager.  I've CCed Jakub and Richi.

Dave