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Re: [RFC PATCH, alpha]: ABI change: pass SFmode and SCmode variable arguments by reference
On Fri, Sep 2, 2016 at 2:37 PM, Uros Bizjak <ubizjak@gmail.com> wrote:
> On Fri, Sep 2, 2016 at 2:11 PM, Jakub Jelinek <jakub@redhat.com> wrote:
>> 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.
>
> It looks to me that we have no tests for _Complex float variable
> arguments passing in g*.dg/compat/. There are no xfails for alpha* in
> this directory, and these arguments would fail for sure for this
> target.
Indeed. The only scalar _Complex float processing is in
scalar-by-value-4*, and the test lacks varargs.
Uros.