From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org
X-Spam-Level: 
X-Spam-Status: No, score=-3.3 required=5.0 tests=MAILING_LIST_MULTI,
	RCVD_IN_DNSWL_MED,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL autolearn=ham
	autolearn_force=no version=3.4.4
Received: (qmail 32165 invoked from network); 19 Jun 2020 22:46:42 -0000
Received: from mother.openwall.net (195.42.179.200)
  by inbox.vuxu.org with ESMTPUTF8; 19 Jun 2020 22:46:42 -0000
Received: (qmail 32207 invoked by uid 550); 19 Jun 2020 22:46:37 -0000
Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm
Precedence: bulk
List-Post: <mailto:musl@lists.openwall.com>
List-Help: <mailto:musl-help@lists.openwall.com>
List-Unsubscribe: <mailto:musl-unsubscribe@lists.openwall.com>
List-Subscribe: <mailto:musl-subscribe@lists.openwall.com>
List-ID: <musl.lists.openwall.com>
Reply-To: musl@lists.openwall.com
Received: (qmail 32189 invoked from network); 19 Jun 2020 22:46:36 -0000
Date: Fri, 19 Jun 2020 18:46:24 -0400
From: Rich Felker <dalias@libc.org>
To: sidneym@codeaurora.org
Cc: 'Szabolcs Nagy' <nsz@port70.net>, musl@lists.openwall.com
Message-ID: <20200619224624.GO6430@brightrain.aerifal.cx>
References: <20200415182619.GI11469@brightrain.aerifal.cx>
 <039701d61359$c56efa50$504ceef0$@codeaurora.org>
 <20200415192940.GJ11469@brightrain.aerifal.cx>
 <005a01d61f40$dc8cc7b0$95a65710$@codeaurora.org>
 <20200430235109.GJ21576@brightrain.aerifal.cx>
 <8c3611dcf8e2c59885fecd9ebdc70d79@codeaurora.org>
 <20200506005929.GG21576@brightrain.aerifal.cx>
 <1a0301d6458e$b4264d90$1c72e8b0$@codeaurora.org>
 <20200618214247.GD2048759@port70.net>
 <096001d64684$d322d0f0$796872d0$@codeaurora.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <096001d64684$d322d0f0$796872d0$@codeaurora.org>
User-Agent: Mutt/1.5.21 (2010-09-15)
Subject: Re: [musl] Hexagon DSP support

On Fri, Jun 19, 2020 at 04:58:53PM -0500, sidneym@codeaurora.org wrote:
> 
> > -----Original Message-----
> > From: Szabolcs Nagy <nsz@port70.net>
> > Sent: Thursday, June 18, 2020 4:43 PM
> > To: sidneym@codeaurora.org
> > Cc: musl@lists.openwall.com
> > Subject: Re: [musl] Hexagon DSP support
> > 
> > * sidneym@codeaurora.org <sidneym@codeaurora.org> [2020-06-18 11:37:05
> > -0500]:
> > > I attached the updated REPORT with warning output disabled, -w and
> > > -fno-rounding-math (See https://bugs.llvm.org/show_bug.cgi?id=45329)
> > > along with the patch.  I've rebased a couple of times without any
> > > conflicts and the git repo is here:
> > > https://github.com/quic/musl/tree/hexagon
> > 
> > the fmal failures are a bit concerning:
> > 
> > fmal should be a tail call to fma if long double has the same
> representation as
> > double. (can you please verify this? there should be a single branch
> instruction
> > in fmal)
> > 
> > there are no fma failures with the same tests so fmal should work fine
> too.
> 
> In the case of fma the selected function comes from compiler-rt-builtins.
> It looks like since fmal calls fma within the context of the c-library the
> c-library's version is branched to.

Are you talking about how libc-test was built or how musl was built?
This kind of replacement is not valid in either place. musl is built
with -ffreestanding, and libc-test is expected to be built with
-fno-builtin.

Rich