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From: Aldy Hernandez <aldyh@redhat.com>
To: Jakub Jelinek <jakub@redhat.com>
Cc: "MacLeod, Andrew" <amacleod@redhat.com>,
	GCC patches <gcc-patches@gcc.gnu.org>
Subject: Re: [PATCH] [PR24021] Implement PLUS_EXPR range-op entry for floats.
Date: Mon, 7 Nov 2022 13:48:28 +0100	[thread overview]
Message-ID: <CAGm3qMXPqVZ8FEYR-k0CMvkG_80EYvugKCoZF=h1hC7zv_pvkg@mail.gmail.com> (raw)
In-Reply-To: <Y2j9gXcJkEHB6pMb@tucnak>

On Mon, Nov 7, 2022 at 1:43 PM Jakub Jelinek <jakub@redhat.com> wrote:
>
> On Mon, Nov 07, 2022 at 01:35:35PM +0100, Aldy Hernandez wrote:
> > Let me see if I understand you correctly...
> >
> > real_isdenormal is always returning false for our uses in frange?  So
> > instead of using real_isdenormal in flush_denormals_to_zero, perhaps
> > we should be using:
> >
> > REAL_EXP (r) < REAL_MODE_FORMAT (mode)->emin
> >
> > ??
> >
> > Could we perhaps make real_isdenormal always work for all values?  Is
> > that possible?
>
> Yes.  Or have real_isdenormal_target for the uses in real.cc
> which would be private to real.cc and would do what real_isdenormal
> currently does, and then real_isdenormal with the above definition
> (well, r->cl == rvc_normal && ...).

If the REAL_EXP(r)... definition works for everyone, can't we just use
that?  Or do you think there'd be a measurable performance impact?

Aldy


  reply	other threads:[~2022-11-07 12:48 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-13 12:36 Aldy Hernandez
2022-10-13 13:02 ` Toon Moene
2022-10-13 13:44   ` Aldy Hernandez
2022-10-13 13:52     ` Toon Moene
2022-10-14  8:04       ` Aldy Hernandez
2022-10-13 17:57 ` Jakub Jelinek
2022-10-17  6:21   ` Aldy Hernandez
2022-10-24  6:04     ` Aldy Hernandez
2022-10-29  4:55       ` Jeff Law
2022-10-31  8:42       ` Aldy Hernandez
2022-11-04 13:16     ` Jakub Jelinek
2022-11-04 19:14     ` Jakub Jelinek
2022-11-04 19:53       ` Jakub Jelinek
2022-11-07 12:35         ` Aldy Hernandez
2022-11-07 12:43           ` Jakub Jelinek
2022-11-07 12:48             ` Aldy Hernandez [this message]
2022-11-07 12:56               ` Jakub Jelinek
2022-11-07 15:38                 ` Aldy Hernandez
2022-11-08 11:07                   ` Jakub Jelinek
2022-11-08 12:47                     ` Aldy Hernandez
2022-11-08 13:15                       ` Jakub Jelinek
2022-11-08 14:02                         ` Aldy Hernandez
2022-11-08 14:03                           ` Jakub Jelinek
2022-11-07 15:41       ` Aldy Hernandez
2022-11-08 11:20         ` Jakub Jelinek
2022-11-08 13:06           ` Aldy Hernandez
2022-11-08 13:24             ` Jakub Jelinek
2022-11-08 13:47               ` Aldy Hernandez
2022-11-08 13:50                 ` Jakub Jelinek
2022-11-08 14:06                   ` Aldy Hernandez
2022-11-08 14:11                     ` Jakub Jelinek
2022-11-08 14:14                       ` Aldy Hernandez
2022-11-08 23:05                       ` Aldy Hernandez
2022-11-09  6:59                         ` Aldy Hernandez
2022-11-08 17:44           ` Andrew Waterman
2022-11-08 18:11             ` Jakub Jelinek
2022-11-08 18:17               ` Andrew Waterman

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