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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/106117] Use of option -fexcess-precision for operation-by-operation emulation for _Float16 arithmetics.
Date: Wed, 29 Jun 2022 17:34:21 +0000	[thread overview]
Message-ID: <bug-106117-4-C9Fl5PhTwJ@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-106117-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106117

--- Comment #5 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
The idea with "16" is to say that's the exact FLT_EVAL_METHOD value 
(defined in C23 Annex H) whose semantics should be followed.  It would 
affect float/double promotion on i386 as well (the back end gives an error 
that the combination of that option with -mfpmath=387 is unsupported).

  parent reply	other threads:[~2022-06-29 17:34 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-28 13:17 [Bug c/106117] New: " Zahira.Ammarguellat at intel dot com
2022-06-28 15:04 ` [Bug c/106117] " rjmccall at gmail dot com
2022-06-28 21:14 ` joseph at codesourcery dot com
2022-06-28 23:44 ` crazylht at gmail dot com
2022-06-29 15:47 ` rjmccall at gmail dot com
2022-06-29 17:34 ` joseph at codesourcery dot com [this message]
2022-06-29 17:58 ` rjmccall at gmail dot com
2022-06-29 20:16 ` joseph at codesourcery dot com
2022-06-29 21:31 ` rjmccall at gmail dot com

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