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From: "H.J. Lu" <hjl.tools@gmail.com>
To: Hongtao Liu <crazylht@gmail.com>
Cc: Jakub Jelinek <jakub@redhat.com>,
	liuhongt <hongtao.liu@intel.com>,
	gcc-patches@gcc.gnu.org,  ubizjak@gmail.com
Subject: Re: [PATCH V2 2/2] [x86] x86: Add a new option -mdaz-ftz to enable FTZ and DAZ flags in MXCSR.
Date: Wed, 21 Dec 2022 12:20:23 -0800	[thread overview]
Message-ID: <CAMe9rOpoghjE8mSqq-d5PbMtd1z_b8hxGX2w3wtuXx=JPiMMfw@mail.gmail.com> (raw)
In-Reply-To: <CAMZc-bwdiQS5HFrMmoTiD8tjFevs=-8-qQDNDdi1_p5YEMf_-A@mail.gmail.com>

On Mon, Dec 19, 2022 at 8:52 PM Hongtao Liu <crazylht@gmail.com> wrote:
>
> On Thu, Dec 15, 2022 at 3:45 PM Hongtao Liu <crazylht@gmail.com> wrote:
> >
> > On Thu, Dec 15, 2022 at 3:39 PM Jakub Jelinek <jakub@redhat.com> wrote:
> > >
> > > On Thu, Dec 15, 2022 at 02:21:37PM +0800, liuhongt via Gcc-patches wrote:
> > > > --- a/gcc/config/i386/i386.opt
> > > > +++ b/gcc/config/i386/i386.opt
> > > > @@ -420,6 +420,10 @@ mpc80
> > > >  Target RejectNegative
> > > >  Set 80387 floating-point precision to 80-bit.
> > > >
> > > > +mdaz-ftz
> > > > +Target
> > >
> > > s/Target/Driver/
> > Change to Driver and Got error like:cc1: error: command-line option
> > ‘-mdaz-ftz’ is valid for the driver but not for C.
> Hi Jakub:
>   I didn't find a good solution to handle this error after changing
> *Target* to *Driver*, Could you give some hints how to solve this
> problem?
> Or is it ok for you to mark this as *Target*(there won't be any save
> and restore in cfun since there's no variable defined here.)

Since all -m* options are passed to cc1, -mdaz-ftz can't be marked
as Driver.  We need to give it a different name to mark it as Driver.


-- 
H.J.

  reply	other threads:[~2022-12-21 20:21 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-14  2:18 [PATCH] [x86] x86: Don't add crtfastmath.o for -shared and add " liuhongt
2022-12-14  8:08 ` Richard Biener
2022-12-14  8:16   ` Jakub Jelinek
2022-12-14  8:23     ` Richard Biener
2022-12-14  8:34       ` Liu, Hongtao
2022-12-14  8:52         ` Richard Biener
2022-12-14  9:07           ` Uros Bizjak
2022-12-15  6:21             ` [PATCH V2 1/2] x86: Don't add crtfastmath.o for -shared liuhongt
2022-12-15  6:21               ` [PATCH V2 2/2] [x86] x86: Add a new option -mdaz-ftz to enable FTZ and DAZ flags in MXCSR liuhongt
2022-12-15  7:39                 ` Jakub Jelinek
2022-12-15  7:45                   ` Hongtao Liu
2022-12-20  4:51                     ` Hongtao Liu
2022-12-21 20:20                       ` H.J. Lu [this message]
2022-12-21 22:35                         ` Jakub Jelinek
2022-12-21 22:43                           ` H.J. Lu
2022-12-21 22:46                             ` Jakub Jelinek
2022-12-22  4:40                               ` Hongtao Liu
2022-12-22  8:04                                 ` Uros Bizjak
2023-05-04  5:35                                   ` Hongtao Liu
2023-05-04  5:36                                     ` Hongtao Liu
2023-05-04  9:49                                       ` Richard Biener
2023-05-10  1:41                                         ` Hongtao Liu
2023-05-10  6:41                                           ` Richard Biener
2023-05-10  9:07                                             ` [PATCH] " liuhongt
2023-05-12  5:43                                               ` Hongtao Liu
2023-05-15  1:16                                                 ` Hongtao Liu
2022-12-16  9:50               ` [PATCH V2 1/2] x86: Don't add crtfastmath.o for -shared Uros Bizjak

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