This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: [RFC PATCH, alpha]: ABI change: pass SFmode and SCmode variable arguments by reference
- From: Jakub Jelinek <jakub at redhat dot com>
- To: Joseph Myers <joseph at codesourcery dot com>
- Cc: Uros Bizjak <ubizjak at gmail dot com>, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>, Richard Henderson <rth at twiddle dot net>
- Date: Fri, 2 Sep 2016 14:11:57 +0200
- Subject: Re: [RFC PATCH, alpha]: ABI change: pass SFmode and SCmode variable arguments by reference
- Authentication-results: sourceware.org; auth=none
- References: <CAFULd4atfy2fYm-LP3+7FEzMedFFrTP9FsEnJsaoEo+XUsZ8-A@mail.gmail.com> <alpine.DEB.2.20.1609021206490.21412@digraph.polyomino.org.uk>
- Reply-to: Jakub Jelinek <jakub at redhat dot com>
On Fri, Sep 02, 2016 at 12:09:30PM +0000, Joseph Myers wrote:
> On Fri, 2 Sep 2016, Uros Bizjak wrote:
>
> > argument. Passing _Complex float as a variable argument never
> > worked on alpha. Thus, we have no backward compatibility issues
>
> Presumably there should be an architecture-independent execution test of
> passing _Complex float in variable arguments - either new, or a
> pre-existing one whose XFAIL or skip for alpha can be removed. (That is,
> one in the GCC testsuite rather than relying on a libffi test to test
> GCC.)
And if it is in g*.dg/compat/, it can even test ABI compatibility between
different compilers or their versions.
Jakub