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From: "Stefan Kanthak" <stefan.kanthak@nexgo.de>
To: "Jakub Jelinek" <jakub@redhat.com>,
	"Jonathan Wakely" <jwakely.gcc@gmail.com>
Cc: <gcc@gnu.org>, "Andrew Pinski" <pinskia@gmail.com>
Subject: Re: Will GCC eventually support SSE2 or SSE4.1?
Date: Fri, 26 May 2023 16:41:23 +0200	[thread overview]
Message-ID: <D79383C0D8334C829C921C20EDD120E4@H270> (raw)
In-Reply-To: <ZHC/uogTROpQAmf2@tucnak>

"Jakub Jelinek" <jakub@redhat.com> wrote:

[...]

> And for -m32 it is also the last option that wins, but as with
> many other cases just last one from certain set of options. [...]
> The -mISA options are processed left to right after

as well as BEFORE

> setting base from -march=.

In other words: although -march= selects a (documented sub)set of
-mISA options, it does NEITHER reset any -mISA option set NOR any
-mno-ISA option reset BEFORE or AFTER itself, i.e. all -m[no-]ISA
options have precedence even if they preceed -march=.

Just document that!

Stefan

  reply	other threads:[~2023-05-26 14:48 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-26  6:46 Stefan Kanthak
2023-05-26  7:00 ` Andrew Pinski
2023-05-26  7:30   ` Jonathan Wakely
2023-05-26  7:58     ` Stefan Kanthak
2023-05-26  8:16       ` Sam James
2023-05-26  8:28       ` Jonathan Wakely
2023-05-26  8:59         ` Stefan Kanthak
2023-05-26  9:22           ` Jakub Jelinek
2023-05-26 11:28             ` Stefan Kanthak
2023-05-26 11:42               ` Jonathan Wakely
2023-05-26 12:03                 ` Stefan Kanthak
2023-05-26 12:16                   ` Jonathan Wakely
2023-05-26 12:22                     ` Stefan Kanthak
2023-05-26 13:00                       ` Mark Wielaard
2023-05-26 12:23                   ` Jonathan Wakely
2023-05-26 11:36             ` Stefan Kanthak
2023-05-26 11:45               ` Jonathan Wakely
2023-05-26 12:19                 ` Stefan Kanthak
2023-05-26 12:30                   ` Jonathan Wakely
2023-05-26 12:42                     ` Stefan Kanthak
2023-05-26 13:33                       ` Nicholas Vinson
2023-05-26 12:37                   ` Jakub Jelinek
2023-05-26 13:49                     ` Stefan Kanthak
2023-05-26 14:07                       ` Jonathan Wakely
2023-05-26 14:18                         ` Jakub Jelinek
2023-05-26 14:41                           ` Stefan Kanthak [this message]
2023-05-26 14:55                             ` Jonathan Wakely
2023-05-26 15:07                               ` Stefan Kanthak
2023-05-26 14:26                         ` Stefan Kanthak
2023-05-26 14:58                           ` Jonathan Wakely
2023-05-26 15:49                             ` Stefan Kanthak
2023-05-26 16:44                               ` David Brown
2023-05-27 18:16                                 ` Will GCC eventually support correct code compilation? Dave Blanchard
2023-05-27 18:59                                   ` Jason Merrill
2023-05-28 11:50                                   ` David Brown
2023-05-26  9:22           ` Will GCC eventually support SSE2 or SSE4.1? Jonathan Wakely
2023-05-26  8:12     ` Hagen Paul Pfeifer
2023-05-26  9:51       ` Jonathan Wakely
2023-05-26 11:34 ` Nicholas Vinson
2023-05-26 15:10 ` LIU Hao
2023-05-26 15:40   ` Stefan Kanthak
2023-05-27 18:20     ` LIU Hao
2023-05-27 18:49       ` Stefan Kanthak

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