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Re: [PATCH] PR85678: Change default to -fno-common
- From: Jeff Law <law at redhat dot com>
- To: Richard Biener <richard dot guenther at gmail dot com>, gcc-patches at gcc dot gnu dot org, David Edelsohn <dje dot gcc at gmail dot com>, Wilco Dijkstra <Wilco dot Dijkstra at arm dot com>
- Cc: nd <nd at arm dot com>
- Date: Mon, 28 Oct 2019 13:45:55 -0600
- Subject: Re: [PATCH] PR85678: Change default to -fno-common
- References: <CAGWvny=ycjnnM+Pbe+wGGUdEPkqNyWi8KrpkasKtOSqUazUPtQ@mail.gmail.com> <30E7FA47-6132-4DA2-A3D0-03CB13B043EA@gmail.com>
On 10/28/19 1:43 PM, Richard Biener wrote:
> On October 28, 2019 7:43:33 PM GMT+01:00, David Edelsohn <dje.gcc@gmail.com> wrote:
>>>> Has this been bootstrapped and regression tested?
>>>
>>> Yes, it bootstraps OK of course. I ran regression over the weekend,
>> there
>>> are a few minor regressions in lto due to relying on tentative
>> definitions
>>> and a few latent bugs. I'd expect there will be a few similar
>> failures on
>>> other targets but nothing major since few testcases rely on -fcommon.
>>
>> This almost certainly will break AIX.
>
> I suppose targets can override this decision.
I think they probably could via the override_options mechanism.
Jeff