From: Segher Boessenkool <segher@kernel.crashing.org>
To: Jakub Jelinek <jakub@redhat.com>
Cc: Michael Meissner <meissner@linux.ibm.com>,
gcc-patches@gcc.gnu.org, "Kewen.Lin" <linkw@linux.ibm.com>,
David Edelsohn <dje.gcc@gmail.com>,
Peter Bergner <bergner@linux.ibm.com>,
Will Schmidt <will_schmidt@vnet.ibm.com>,
William Seurer <seurer@gcc.gnu.org>
Subject: Re: Patch [0/3] for PR target/107299 (GCC does not build on PowerPC when long double is IEEE 128-bit)
Date: Tue, 13 Dec 2022 08:11:37 -0600 [thread overview]
Message-ID: <20221213141137.GK25951@gate.crashing.org> (raw)
In-Reply-To: <Y49Zx0Y96vKS8P8O@tucnak>
On Tue, Dec 06, 2022 at 04:03:35PM +0100, Jakub Jelinek wrote:
> On Tue, Dec 06, 2022 at 08:56:09AM -0600, Segher Boessenkool wrote:
> > > In the past, _Float128 was a C extended type,
> > > but now it is a part of the C/C++ 2x standards.
> >
> > Only if you select a new enough -std=, it still is an extended type if
> > not?
>
> No, as an extension _Float{16,32,64,128}{,x} are available (where the backend
> has support for such IEEE format) even in older C or C++ modes,
> similarly the {f,F}{16,32,64,128} suffixes on literals (with pedwarn
> on everything but C++23). In C++ it is in all language modes treated as
> distinct type from __float128, and _FloatNN is handled as extended floating
> point type per C++23 rules, while __float128 is not.
Right, so there is no "in the past" here, the actual situation is quite
different.
Reviewing these patches is harder and a lot more work than writing them
can ever have been :-( :-( :-(
Segher
prev parent reply other threads:[~2022-12-13 14:12 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-02 2:39 Michael Meissner
2022-11-02 2:40 ` [PATCH 1/3] Rework 128-bit complex multiply and divide, PR target/107299 Michael Meissner
2022-11-07 15:41 ` Ping: " Michael Meissner
2022-11-29 17:43 ` Ping #2: " Michael Meissner
2022-12-02 17:58 ` Ping #3: " Michael Meissner
2022-12-06 9:36 ` Kewen.Lin
2022-12-07 6:44 ` Michael Meissner
2022-12-07 7:55 ` Kewen.Lin
2022-12-08 22:04 ` Michael Meissner
2022-12-12 10:20 ` Kewen.Lin
2022-12-13 6:14 ` Michael Meissner
2022-12-13 13:51 ` Segher Boessenkool
2022-12-14 8:45 ` Kewen.Lin
2022-12-13 6:23 ` Michael Meissner
2022-11-02 2:42 ` [PATCH 2/3] Make __float128 use the _Float128 type, " Michael Meissner
2022-11-07 15:43 ` Ping: " Michael Meissner
2022-11-29 17:44 ` Michael Meissner
2022-12-02 18:01 ` Ping #3: " Michael Meissner
2022-12-06 11:27 ` Kewen.Lin
2022-12-14 8:46 ` Kewen.Lin
2022-12-14 9:36 ` Jakub Jelinek
2022-12-14 10:11 ` Kewen.Lin
2022-12-14 10:33 ` Jakub Jelinek
2022-12-15 7:54 ` Kewen.Lin
2022-12-15 7:45 ` Kewen.Lin
2022-12-15 18:28 ` Joseph Myers
2022-12-15 18:49 ` Segher Boessenkool
2022-12-15 18:56 ` Jakub Jelinek
2022-12-15 20:26 ` Segher Boessenkool
2022-12-15 17:59 ` Segher Boessenkool
2022-12-16 0:09 ` Michael Meissner
2022-12-16 17:55 ` Segher Boessenkool
2022-12-16 21:53 ` Michael Meissner
2023-01-11 20:24 ` Michael Meissner
2022-11-02 2:44 ` [PATCH 3/3] Update float 128-bit conversions, " Michael Meissner
2022-11-07 15:44 ` Ping: " Michael Meissner
2022-11-29 17:46 ` Ping #3: " Michael Meissner
2022-12-02 18:04 ` Michael Meissner
2022-12-06 14:56 ` Patch [0/3] for PR target/107299 (GCC does not build on PowerPC when long double is IEEE 128-bit) Segher Boessenkool
2022-12-06 15:03 ` Jakub Jelinek
2022-12-13 14:11 ` Segher Boessenkool [this message]
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