* [Caml-list] Zarith problems on ppc64le
@ 2016-11-07 13:22 Richard W.M. Jones
2016-11-07 13:31 ` Nicolas Ojeda Bar
` (2 more replies)
0 siblings, 3 replies; 11+ messages in thread
From: Richard W.M. Jones @ 2016-11-07 13:22 UTC (permalink / raw)
To: caml-list
https://bugzilla.redhat.com/show_bug.cgi?id=1392247
Zarith fails tests on OCaml 4.04.0 + ppc64le with some fairly gross
errors, eg:
of_float -1.
- = -1
+ = 0
(It passes fine on OCaml 4.04.0 + ppc64)
The implementation of Zarith is quite complex and I've so far failed
to understand what's going on.
However an additional problem which makes debugging this harder is
that I cannot work out how to check out the source code for the
package. Using anon svn access hangs. Using svn+ssh access fails to
authenticate. (Could we switch the project over to git?) I'm fairly
sure this isn't a network problem at my end.
Rich.
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Caml-list] Zarith problems on ppc64le
2016-11-07 13:22 [Caml-list] Zarith problems on ppc64le Richard W.M. Jones
@ 2016-11-07 13:31 ` Nicolas Ojeda Bar
2016-11-07 13:55 ` Francois BERENGER
2016-11-07 15:48 ` Richard W.M. Jones
2 siblings, 0 replies; 11+ messages in thread
From: Nicolas Ojeda Bar @ 2016-11-07 13:31 UTC (permalink / raw)
To: Richard W.M. Jones; +Cc: OCaml Mailing List
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Hi Richard,
There seems to be an (unofficial) mirror at https://github.com/bobot/zarith.
Cheers,
Nicolas
On Mon, Nov 7, 2016 at 2:22 PM, Richard W.M. Jones <rich@annexia.org> wrote:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1392247
>
> Zarith fails tests on OCaml 4.04.0 + ppc64le with some fairly gross
> errors, eg:
>
> of_float -1.
> - = -1
> + = 0
>
> (It passes fine on OCaml 4.04.0 + ppc64)
>
> The implementation of Zarith is quite complex and I've so far failed
> to understand what's going on.
>
> However an additional problem which makes debugging this harder is
> that I cannot work out how to check out the source code for the
> package. Using anon svn access hangs. Using svn+ssh access fails to
> authenticate. (Could we switch the project over to git?) I'm fairly
> sure this isn't a network problem at my end.
>
> Rich.
>
> --
> Caml-list mailing list. Subscription management and archives:
> https://sympa.inria.fr/sympa/arc/caml-list
> Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
> Bug reports: http://caml.inria.fr/bin/caml-bugs
>
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^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Caml-list] Zarith problems on ppc64le
2016-11-07 13:22 [Caml-list] Zarith problems on ppc64le Richard W.M. Jones
2016-11-07 13:31 ` Nicolas Ojeda Bar
@ 2016-11-07 13:55 ` Francois BERENGER
2016-11-07 14:11 ` Sylvain Le Gall
2016-11-07 15:48 ` Richard W.M. Jones
2 siblings, 1 reply; 11+ messages in thread
From: Francois BERENGER @ 2016-11-07 13:55 UTC (permalink / raw)
To: caml-list; +Cc: gildor478
On 11/07/2016 02:22 PM, Richard W.M. Jones wrote:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1392247
>
> Zarith fails tests on OCaml 4.04.0 + ppc64le with some fairly gross
> errors, eg:
>
> of_float -1.
> - = -1
> + = 0
>
> (It passes fine on OCaml 4.04.0 + ppc64)
>
> The implementation of Zarith is quite complex and I've so far failed
> to understand what's going on.
>
> However an additional problem which makes debugging this harder is
> that I cannot work out how to check out the source code for the
> package. Using anon svn access hangs. Using svn+ssh access fails to
> authenticate. (Could we switch the project over to git?) I'm fairly
> sure this isn't a network problem at my end.
svn: E000110: Can't connect to host 'ssh.ocamlcore.org': Connection
timed out
I suppose this machine is down.
On the other hand, opam can tell you how to get a tarball:
# opam info zarith
[...]
upstream-url:
https://forge.ocamlcore.org/frs/download.php/1574/zarith-1.4.1.tgz
[...]
This URL works with wget.
--
Regards,
Francois.
"When in doubt, use more types"
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Caml-list] Zarith problems on ppc64le
2016-11-07 13:55 ` Francois BERENGER
@ 2016-11-07 14:11 ` Sylvain Le Gall
2016-11-07 14:59 ` Simon Cruanes
0 siblings, 1 reply; 11+ messages in thread
From: Sylvain Le Gall @ 2016-11-07 14:11 UTC (permalink / raw)
To: Francois BERENGER, caml-list
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1. the machine is up
$ ssh ssh.ocamlcore.org
RSA host key for IP address '87.98.190.243' not in list of known hosts.
Last login: Tue Oct 18 08:17:05 2016 from 212.51.151.109
(but it can be a bit slow on the authentication, but not enough to cause a
time out)
2. Check your SSH port, it must be 522.
https://forge.ocamlcore.org/forum/forum.php?forum_id=939
There is a mention of this news on the SCM settings page as well:
https://forge.ocamlcore.org/scm/?group_id=243
Using 522 as a port:
$ svn checkout svn+ssh://gildor-admin@ssh.ocamlcore.org/svn/zarith/trunk
A trunk/z_pp.ml
A trunk/q.mli
A trunk/configure
A trunk/z_pp.pl
3. Anonymous access is indeed buggy, I will fix it later.
Can you open a bug here, so that you get notified when it is solved:
https://forge.ocamlcore.org/tracker/?atid=101&group_id=1&func=browse
Actually, the fix is pretty straightforward:
rather than, as stated on the SCM page:
$ svn checkout svn://ssh.ocamlcore.org/svn/zarith/trunk
use:
$ svn checkout svn://ocamlcore.org/svn/zarith/trunk
I'll update the instruction on the SCM page and publish a news about that.
Le lun. 7 nov. 2016 à 14:55, Francois BERENGER <francois.berenger@inria.fr>
a écrit :
> On 11/07/2016 02:22 PM, Richard W.M. Jones wrote:
> >
> > https://bugzilla.redhat.com/show_bug.cgi?id=1392247
> >
> > Zarith fails tests on OCaml 4.04.0 + ppc64le with some fairly gross
> > errors, eg:
> >
> > of_float -1.
> > - = -1
> > + = 0
> >
> > (It passes fine on OCaml 4.04.0 + ppc64)
> >
> > The implementation of Zarith is quite complex and I've so far failed
> > to understand what's going on.
> >
> > However an additional problem which makes debugging this harder is
> > that I cannot work out how to check out the source code for the
> > package. Using anon svn access hangs. Using svn+ssh access fails to
> > authenticate. (Could we switch the project over to git?) I'm fairly
> > sure this isn't a network problem at my end.
>
> svn: E000110: Can't connect to host 'ssh.ocamlcore.org': Connection
> timed out
>
> I suppose this machine is down.
>
> On the other hand, opam can tell you how to get a tarball:
> # opam info zarith
> [...]
> upstream-url:
> https://forge.ocamlcore.org/frs/download.php/1574/zarith-1.4.1.tgz
> [...]
>
> This URL works with wget.
>
> --
> Regards,
> Francois.
> "When in doubt, use more types"
>
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^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Caml-list] Zarith problems on ppc64le
2016-11-07 14:11 ` Sylvain Le Gall
@ 2016-11-07 14:59 ` Simon Cruanes
2016-11-15 9:11 ` Bernhard Schommer
0 siblings, 1 reply; 11+ messages in thread
From: Simon Cruanes @ 2016-11-07 14:59 UTC (permalink / raw)
To: Sylvain Le Gall; +Cc: Francois BERENGER, caml-list
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Not really related, but this could be the occasion to move Zarith to
github for good, so that we can finally host its documentation somewhere
(gh-pages) and contribute.
--
Simon Cruanes
http://weusepgp.info/
key 49AA62B6, fingerprint 949F EB87 8F06 59C6 D7D3 7D8D 4AC0 1D08 49AA 62B6
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 801 bytes --]
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Caml-list] Zarith problems on ppc64le
2016-11-07 13:22 [Caml-list] Zarith problems on ppc64le Richard W.M. Jones
2016-11-07 13:31 ` Nicolas Ojeda Bar
2016-11-07 13:55 ` Francois BERENGER
@ 2016-11-07 15:48 ` Richard W.M. Jones
2016-11-07 15:58 ` Xavier Leroy
2016-11-08 10:00 ` Goswin von Brederlow
2 siblings, 2 replies; 11+ messages in thread
From: Richard W.M. Jones @ 2016-11-07 15:48 UTC (permalink / raw)
To: caml-list
On Mon, Nov 07, 2016 at 01:22:01PM +0000, Richard W.M. Jones wrote:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1392247
>
> Zarith fails tests on OCaml 4.04.0 + ppc64le with some fairly gross
> errors, eg:
>
> of_float -1.
> - = -1
> + = 0
>
> (It passes fine on OCaml 4.04.0 + ppc64)
>
> The implementation of Zarith is quite complex and I've so far failed
> to understand what's going on.
FWIW this seems like it is invoking undefined behaviour in C. See
my analysis here:
https://bugzilla.redhat.com/show_bug.cgi?id=1392247#c3
Rich.
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Caml-list] Zarith problems on ppc64le
2016-11-07 15:48 ` Richard W.M. Jones
@ 2016-11-07 15:58 ` Xavier Leroy
2016-11-07 16:19 ` Richard W.M. Jones
2016-11-08 10:00 ` Goswin von Brederlow
1 sibling, 1 reply; 11+ messages in thread
From: Xavier Leroy @ 2016-11-07 15:58 UTC (permalink / raw)
To: caml-list
On 07/11/2016 16:48, Richard W.M. Jones wrote:
> On Mon, Nov 07, 2016 at 01:22:01PM +0000, Richard W.M. Jones wrote:
>>
>> https://bugzilla.redhat.com/show_bug.cgi?id=1392247
>>
>> Zarith fails tests on OCaml 4.04.0 + ppc64le with some fairly gross
>> errors, eg:
>>
>> of_float -1.
>> - = -1
>> + = 0
>>
>> (It passes fine on OCaml 4.04.0 + ppc64)
>>
>> The implementation of Zarith is quite complex and I've so far failed
>> to understand what's going on.
>
> FWIW this seems like it is invoking undefined behaviour in C. See
> my analysis here:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1392247#c3
Yes, something is weird here. You can try to put
return Val_long((intnat) x);
on line 524: it should fix the issue that you suspect.
If this is the source of the problem, I'm surprised that it doesn't
break on other platforms as well.
- Xavier Leroy
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Caml-list] Zarith problems on ppc64le
2016-11-07 15:58 ` Xavier Leroy
@ 2016-11-07 16:19 ` Richard W.M. Jones
0 siblings, 0 replies; 11+ messages in thread
From: Richard W.M. Jones @ 2016-11-07 16:19 UTC (permalink / raw)
To: Xavier Leroy; +Cc: caml-list
On Mon, Nov 07, 2016 at 04:58:24PM +0100, Xavier Leroy wrote:
> On 07/11/2016 16:48, Richard W.M. Jones wrote:
> > On Mon, Nov 07, 2016 at 01:22:01PM +0000, Richard W.M. Jones wrote:
> >>
> >> https://bugzilla.redhat.com/show_bug.cgi?id=1392247
> >>
> >> Zarith fails tests on OCaml 4.04.0 + ppc64le with some fairly gross
> >> errors, eg:
> >>
> >> of_float -1.
> >> - = -1
> >> + = 0
> >>
> >> (It passes fine on OCaml 4.04.0 + ppc64)
> >>
> >> The implementation of Zarith is quite complex and I've so far failed
> >> to understand what's going on.
> >
> > FWIW this seems like it is invoking undefined behaviour in C. See
> > my analysis here:
> >
> > https://bugzilla.redhat.com/show_bug.cgi?id=1392247#c3
>
> Yes, something is weird here. You can try to put
>
> return Val_long((intnat) x);
>
> on line 524: it should fix the issue that you suspect.
>
> If this is the source of the problem, I'm surprised that it doesn't
> break on other platforms as well.
Yup that's exactly the fix I came up with:
https://bugzilla.redhat.com/show_bug.cgi?id=1392247#c6
There may be other places which make this assumption, but with just
that fix the tests pass successfully on ppc64le.
Thanks,
Rich.
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Caml-list] Zarith problems on ppc64le
2016-11-07 15:48 ` Richard W.M. Jones
2016-11-07 15:58 ` Xavier Leroy
@ 2016-11-08 10:00 ` Goswin von Brederlow
2016-11-08 11:10 ` Richard W.M. Jones
1 sibling, 1 reply; 11+ messages in thread
From: Goswin von Brederlow @ 2016-11-08 10:00 UTC (permalink / raw)
To: Richard W.M. Jones; +Cc: caml-list
On Mon, Nov 07, 2016 at 03:48:43PM +0000, Richard W.M. Jones wrote:
> On Mon, Nov 07, 2016 at 01:22:01PM +0000, Richard W.M. Jones wrote:
> >
> > https://bugzilla.redhat.com/show_bug.cgi?id=1392247
> >
> > Zarith fails tests on OCaml 4.04.0 + ppc64le with some fairly gross
> > errors, eg:
> >
> > of_float -1.
> > - = -1
> > + = 0
> >
> > (It passes fine on OCaml 4.04.0 + ppc64)
> >
> > The implementation of Zarith is quite complex and I've so far failed
> > to understand what's going on.
>
> FWIW this seems like it is invoking undefined behaviour in C. See
> my analysis here:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1392247#c3
>
> Rich.
What I don't get is why this ihappens only on ppc64le. For it to
consistently return 0 there has to be some check in there for negative
values. But that check is only present in some specialized ppc64le
code? Seems like something the generic code for all archs should
already have.
Just out of interest: So what's so special about ppc64le that checking
for negatives is present just there?
MfG
Goswin
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Caml-list] Zarith problems on ppc64le
2016-11-08 10:00 ` Goswin von Brederlow
@ 2016-11-08 11:10 ` Richard W.M. Jones
0 siblings, 0 replies; 11+ messages in thread
From: Richard W.M. Jones @ 2016-11-08 11:10 UTC (permalink / raw)
To: Goswin von Brederlow; +Cc: caml-list
[-- Attachment #1: Type: text/plain, Size: 628 bytes --]
On Tue, Nov 08, 2016 at 11:00:29AM +0100, Goswin von Brederlow wrote:
> What I don't get is why this ihappens only on ppc64le. For it to
> consistently return 0 there has to be some check in there for negative
> values. But that check is only present in some specialized ppc64le
> code? Seems like something the generic code for all archs should
> already have.
>
> Just out of interest: So what's so special about ppc64le that checking
> for negatives is present just there?
Undefined behaviour means anything could happen. Attached are the
ppc64 & ppc64le disassemblies for this function if you want to have a
look.
Rich.
[-- Attachment #2: ppc64.S --]
[-- Type: text/plain, Size: 13495 bytes --]
0000000000001220 <.ml_z_of_float>:
1220: 7c 08 02 a6 mflr r0
1224: fb 61 ff d0 std r27,-48(r1)
1228: fb e1 ff f0 std r31,-16(r1)
122c: 7c 7b 1b 78 mr r27,r3
1230: db e1 ff f8 stfd f31,-8(r1)
1234: fb 41 ff c8 std r26,-56(r1)
1238: 3f e2 00 00 addis r31,r2,0
123c: eb ff 00 00 ld r31,0(r31)
1240: 3c a2 00 00 addis r5,r2,0
1244: 38 80 00 01 li r4,1
1248: fb 81 ff d8 std r28,-40(r1)
124c: fb a1 ff e0 std r29,-32(r1)
1250: 38 a5 00 00 addi r5,r5,0
1254: fb c1 ff e8 std r30,-24(r1)
1258: f8 01 00 10 std r0,16(r1)
125c: f8 21 ff 41 stdu r1,-192(r1)
1260: cb e3 00 00 lfd f31,0(r3)
1264: e8 7f 00 00 ld r3,0(r31)
1268: fc 20 f8 90 fmr f1,f31
126c: db e1 00 78 stfd f31,120(r1)
1270: 60 42 00 00 ori r2,r2,0
1274: e8 c1 00 78 ld r6,120(r1)
1278: 48 00 00 01 bl 1278 <.ml_z_of_float+0x58>
127c: 60 00 00 00 nop
1280: e8 df 00 00 ld r6,0(r31)
1284: 3c 62 00 00 addis r3,r2,0
1288: 38 a0 00 03 li r5,3
128c: 38 80 00 01 li r4,1
1290: 38 63 00 00 addi r3,r3,0
1294: 48 00 00 01 bl 1294 <.ml_z_of_float+0x74>
1298: 60 00 00 00 nop
129c: 3c e0 3f ff lis r7,16383
12a0: 3c c0 c0 00 lis r6,-16384
12a4: e8 7f 00 00 ld r3,0(r31)
12a8: 60 e7 ff ff ori r7,r7,65535
12ac: 78 c6 07 c6 rldicr r6,r6,32,31
12b0: 78 e7 07 c6 rldicr r7,r7,32,31
12b4: 3c a2 00 00 addis r5,r2,0
12b8: 64 e7 ff ff oris r7,r7,65535
12bc: 60 c6 10 00 ori r6,r6,4096
12c0: 60 e7 f0 00 ori r7,r7,61440
12c4: 38 a5 00 00 addi r5,r5,0
12c8: 38 80 00 01 li r4,1
12cc: 48 00 00 01 bl 12cc <.ml_z_of_float+0xac>
12d0: 60 00 00 00 nop
12d4: 3d 22 00 00 addis r9,r2,0
12d8: c8 09 00 00 lfd f0,0(r9)
12dc: ff 9f 00 00 fcmpu cr7,f31,f0
12e0: 4f dd f3 82 cror 4*cr7+eq,4*cr7+gt,4*cr7+eq
12e4: 41 9e 02 5c beq cr7,1540 <.ml_z_of_float+0x320>
12e8: fc 00 fe 5e fctidz f0,f31
12ec: d8 01 00 70 stfd f0,112(r1)
12f0: 60 42 00 00 ori r2,r2,0
12f4: eb c1 00 70 ld r30,112(r1)
12f8: 7b dc 0f a4 rldicr r28,r30,1,62
12fc: e8 7f 00 00 ld r3,0(r31)
1300: 3c a2 00 00 addis r5,r2,0
1304: 3b bc 00 01 addi r29,r28,1
1308: 38 a5 00 00 addi r5,r5,0
130c: 38 80 00 01 li r4,1
1310: 7f a6 eb 78 mr r6,r29
1314: 48 00 00 01 bl 1314 <.ml_z_of_float+0xf4>
1318: 60 00 00 00 nop
131c: e8 7f 00 00 ld r3,0(r31)
1320: 3c a2 00 00 addis r5,r2,0
1324: 7f c6 f3 78 mr r6,r30
1328: 38 a5 00 00 addi r5,r5,0
132c: 38 80 00 01 li r4,1
1330: 48 00 00 01 bl 1330 <.ml_z_of_float+0x110>
1334: 60 00 00 00 nop
1338: e8 7f 00 00 ld r3,0(r31)
133c: 3c a2 00 00 addis r5,r2,0
1340: 38 80 00 01 li r4,1
1344: 38 a5 00 00 addi r5,r5,0
1348: 38 c0 00 00 li r6,0
134c: 48 00 00 01 bl 134c <.ml_z_of_float+0x12c>
1350: 60 00 00 00 nop
1354: e8 7f 00 00 ld r3,0(r31)
1358: 3c a2 00 00 addis r5,r2,0
135c: 38 80 00 01 li r4,1
1360: 38 a5 00 00 addi r5,r5,0
1364: 7f c6 f3 78 mr r6,r30
1368: 48 00 00 01 bl 1368 <.ml_z_of_float+0x148>
136c: 60 00 00 00 nop
1370: 3d 22 00 00 addis r9,r2,0
1374: 3c a2 00 00 addis r5,r2,0
1378: e8 7f 00 00 ld r3,0(r31)
137c: 38 a5 00 00 addi r5,r5,0
1380: 38 80 00 01 li r4,1
1384: c8 09 00 00 lfd f0,0(r9)
1388: ff 9f 00 00 fcmpu cr7,f31,f0
138c: 41 9e 01 14 beq cr7,14a0 <.ml_z_of_float+0x280>
1390: 3c c2 00 00 addis r6,r2,0
1394: 38 c6 00 00 addi r6,r6,0
1398: 48 00 00 01 bl 1398 <.ml_z_of_float+0x178>
139c: 60 00 00 00 nop
13a0: e8 7f 00 00 ld r3,0(r31)
13a4: 3c a2 00 00 addis r5,r2,0
13a8: 7f 86 e3 78 mr r6,r28
13ac: 38 a5 00 00 addi r5,r5,0
13b0: 38 80 00 01 li r4,1
13b4: 48 00 00 01 bl 13b4 <.ml_z_of_float+0x194>
13b8: 60 00 00 00 nop
13bc: e8 7f 00 00 ld r3,0(r31)
13c0: 3c a2 00 00 addis r5,r2,0
13c4: 7f 86 e3 78 mr r6,r28
13c8: 38 a5 00 00 addi r5,r5,0
13cc: 38 80 00 01 li r4,1
13d0: 48 00 00 01 bl 13d0 <.ml_z_of_float+0x1b0>
13d4: 60 00 00 00 nop
13d8: e8 7f 00 00 ld r3,0(r31)
13dc: 3c a2 00 00 addis r5,r2,0
13e0: 7f a6 eb 78 mr r6,r29
13e4: 38 a5 00 00 addi r5,r5,0
13e8: 38 80 00 01 li r4,1
13ec: 48 00 00 01 bl 13ec <.ml_z_of_float+0x1cc>
13f0: 60 00 00 00 nop
13f4: 3d 22 00 00 addis r9,r2,0
13f8: c8 09 00 00 lfd f0,0(r9)
13fc: ff 9f 00 00 fcmpu cr7,f31,f0
1400: 4f dd f3 82 cror 4*cr7+eq,4*cr7+gt,4*cr7+eq
1404: 41 9e 02 c8 beq cr7,16cc <.ml_z_of_float+0x4ac>
1408: e9 3b 00 00 ld r9,0(r27)
140c: 79 28 65 60 rldicl r8,r9,12,53
1410: 39 48 fc 01 addi r10,r8,-1023
1414: 2f 8a 00 00 cmpwi cr7,r10,0
1418: 41 9c 02 4c blt cr7,1664 <.ml_z_of_float+0x444>
141c: 2f 8a 04 00 cmpwi cr7,r10,1024
1420: 41 de 03 00 beq- cr7,1720 <.ml_z_of_float+0x500>
1424: 2f 8a 00 34 cmpwi cr7,r10,52
1428: 3f c0 00 10 lis r30,16
142c: 79 29 03 00 clrldi r9,r9,12
1430: 7b de 07 c6 rldicr r30,r30,32,31
1434: 7d 3e f3 78 or r30,r9,r30
1438: 41 9d 01 38 bgt cr7,1570 <.ml_z_of_float+0x350>
143c: 3d 22 00 00 addis r9,r2,0
1440: 21 4a 00 34 subfic r10,r10,52
1444: 7f de 56 34 srad r30,r30,r10
1448: c8 09 00 00 lfd f0,0(r9)
144c: 7b dd 0f a4 rldicr r29,r30,1,62
1450: 3b bd 00 01 addi r29,r29,1
1454: ff 9f 00 00 fcmpu cr7,f31,f0
1458: 4f dd f3 82 cror 4*cr7+eq,4*cr7+gt,4*cr7+eq
145c: 41 9e 00 a8 beq cr7,1504 <.ml_z_of_float+0x2e4>
1460: 38 21 00 c0 addi r1,r1,192
1464: 7b de 0f a4 rldicr r30,r30,1,62
1468: 23 be 00 01 subfic r29,r30,1
146c: e8 01 00 10 ld r0,16(r1)
1470: cb e1 ff f8 lfd f31,-8(r1)
1474: 7f a3 eb 78 mr r3,r29
1478: eb 41 ff c8 ld r26,-56(r1)
147c: eb 61 ff d0 ld r27,-48(r1)
1480: eb 81 ff d8 ld r28,-40(r1)
1484: eb a1 ff e0 ld r29,-32(r1)
1488: eb c1 ff e8 ld r30,-24(r1)
148c: eb e1 ff f0 ld r31,-16(r1)
1490: 7c 08 03 a6 mtlr r0
1494: 4e 80 00 20 blr
1498: 60 00 00 00 nop
149c: 60 00 00 00 nop
14a0: 3c c2 00 00 addis r6,r2,0
14a4: 38 c6 00 00 addi r6,r6,0
14a8: 48 00 00 01 bl 14a8 <.ml_z_of_float+0x288>
14ac: 60 00 00 00 nop
14b0: e8 7f 00 00 ld r3,0(r31)
14b4: 3c a2 00 00 addis r5,r2,0
14b8: 7f 86 e3 78 mr r6,r28
14bc: 38 a5 00 00 addi r5,r5,0
14c0: 38 80 00 01 li r4,1
14c4: 48 00 00 01 bl 14c4 <.ml_z_of_float+0x2a4>
14c8: 60 00 00 00 nop
14cc: e8 7f 00 00 ld r3,0(r31)
14d0: 3c a2 00 00 addis r5,r2,0
14d4: 7f 86 e3 78 mr r6,r28
14d8: 38 a5 00 00 addi r5,r5,0
14dc: 38 80 00 01 li r4,1
14e0: 48 00 00 01 bl 14e0 <.ml_z_of_float+0x2c0>
14e4: 60 00 00 00 nop
14e8: e8 7f 00 00 ld r3,0(r31)
14ec: 3c a2 00 00 addis r5,r2,0
14f0: 7f a6 eb 78 mr r6,r29
14f4: 38 a5 00 00 addi r5,r5,0
14f8: 38 80 00 01 li r4,1
14fc: 48 00 00 01 bl 14fc <.ml_z_of_float+0x2dc>
1500: 60 00 00 00 nop
1504: 38 21 00 c0 addi r1,r1,192
1508: 7f a3 eb 78 mr r3,r29
150c: e8 01 00 10 ld r0,16(r1)
1510: cb e1 ff f8 lfd f31,-8(r1)
1514: eb 41 ff c8 ld r26,-56(r1)
1518: eb 61 ff d0 ld r27,-48(r1)
151c: eb 81 ff d8 ld r28,-40(r1)
1520: eb a1 ff e0 ld r29,-32(r1)
1524: eb c1 ff e8 ld r30,-24(r1)
1528: eb e1 ff f0 ld r31,-16(r1)
152c: 7c 08 03 a6 mtlr r0
1530: 4e 80 00 20 blr
1534: 60 00 00 00 nop
1538: 60 00 00 00 nop
153c: 60 00 00 00 nop
1540: fc 1f 00 28 fsub f0,f31,f0
1544: 39 20 ff ff li r9,-1
1548: 79 29 00 04 rldicr r9,r9,0,0
154c: fc 00 06 5e fctidz f0,f0
1550: d8 01 00 70 stfd f0,112(r1)
1554: 60 42 00 00 ori r2,r2,0
1558: eb c1 00 70 ld r30,112(r1)
155c: 7f de 4a 78 xor r30,r30,r9
1560: 4b ff fd 98 b 12f8 <.ml_z_of_float+0xd8>
1564: 60 00 00 00 nop
1568: 60 00 00 00 nop
156c: 60 00 00 00 nop
1570: 39 08 fb cd addi r8,r8,-1075
1574: 3c 62 00 00 addis r3,r2,0
1578: e8 63 00 00 ld r3,0(r3)
157c: 38 c0 00 01 li r6,1
1580: 7d 1f 07 b4 extsw r31,r8
1584: 38 a0 00 00 li r5,0
1588: 7f ff 36 74 sradi r31,r31,6
158c: 79 1d 06 a0 clrldi r29,r8,58
1590: 38 9f 00 03 addi r4,r31,3
1594: 7b fb 1f 24 rldicr r27,r31,3,60
1598: 7c 84 07 b4 extsw r4,r4
159c: 7f ba 07 b4 extsw r26,r29
15a0: 78 84 1f 24 rldicr r4,r4,3,60
15a4: 48 00 00 01 bl 15a4 <.ml_z_of_float+0x384>
15a8: 60 00 00 00 nop
15ac: 2f 9f 00 00 cmpwi cr7,r31,0
15b0: 7c 7c 1b 78 mr r28,r3
15b4: 40 9d 00 18 ble cr7,15cc <.ml_z_of_float+0x3ac>
15b8: 7f 65 db 78 mr r5,r27
15bc: 38 80 00 00 li r4,0
15c0: 38 63 00 10 addi r3,r3,16
15c4: 48 00 00 01 bl 15c4 <.ml_z_of_float+0x3a4>
15c8: 60 00 00 00 nop
15cc: 2f ba 00 00 cmpdi cr7,r26,0
15d0: 7c bb e2 14 add r5,r27,r28
15d4: 7f c9 e8 36 sld r9,r30,r29
15d8: 39 40 00 00 li r10,0
15dc: f9 25 00 10 std r9,16(r5)
15e0: 41 9e 00 0c beq cr7,15ec <.ml_z_of_float+0x3cc>
15e4: 23 bd 00 40 subfic r29,r29,64
15e8: 7f ca ee 34 srad r10,r30,r29
15ec: 3d 22 00 00 addis r9,r2,0
15f0: f9 45 00 18 std r10,24(r5)
15f4: 38 e0 00 00 li r7,0
15f8: c8 09 00 00 lfd f0,0(r9)
15fc: 39 3f 00 02 addi r9,r31,2
1600: 7d 29 07 b4 extsw r9,r9
1604: 7d 28 4b 78 mr r8,r9
1608: ff 9f 00 00 fcmpu cr7,f31,f0
160c: 4f dd f3 82 cror 4*cr7+eq,4*cr7+gt,4*cr7+eq
1610: 40 9e 00 b0 bne cr7,16c0 <.ml_z_of_float+0x4a0>
1614: 2f a9 00 00 cmpdi cr7,r9,0
1618: 40 9d 00 d8 ble cr7,16f0 <.ml_z_of_float+0x4d0>
161c: 79 2a 1f 24 rldicr r10,r9,3,60
1620: 7d 4a e2 14 add r10,r10,r28
1624: e9 4a 00 08 ld r10,8(r10)
1628: 2f aa 00 00 cmpdi cr7,r10,0
162c: 40 9e 00 74 bne cr7,16a0 <.ml_z_of_float+0x480>
1630: 7d 29 03 a6 mtctr r9
1634: 79 2a 1f 24 rldicr r10,r9,3,60
1638: 39 4a 00 08 addi r10,r10,8
163c: 7d 4a e2 14 add r10,r10,r28
1640: 48 00 00 1c b 165c <.ml_z_of_float+0x43c>
1644: 60 00 00 00 nop
1648: 60 00 00 00 nop
164c: 60 00 00 00 nop
1650: e9 2a ff f9 ldu r9,-8(r10)
1654: 2f a9 00 00 cmpdi cr7,r9,0
1658: 40 9e 00 48 bne cr7,16a0 <.ml_z_of_float+0x480>
165c: 39 08 ff ff addi r8,r8,-1
1660: 42 00 ff f0 bdnz 1650 <.ml_z_of_float+0x430>
1664: 38 21 00 c0 addi r1,r1,192
1668: 3b a0 00 01 li r29,1
166c: 7f a3 eb 78 mr r3,r29
1670: e8 01 00 10 ld r0,16(r1)
1674: cb e1 ff f8 lfd f31,-8(r1)
1678: eb 41 ff c8 ld r26,-56(r1)
167c: eb 61 ff d0 ld r27,-48(r1)
1680: eb 81 ff d8 ld r28,-40(r1)
1684: eb a1 ff e0 ld r29,-32(r1)
1688: eb c1 ff e8 ld r30,-24(r1)
168c: eb e1 ff f0 ld r31,-16(r1)
1690: 7c 08 03 a6 mtlr r0
1694: 4e 80 00 20 blr
1698: 60 00 00 00 nop
169c: 60 00 00 00 nop
16a0: 2f a8 00 01 cmpdi cr7,r8,1
16a4: 41 9e 00 50 beq cr7,16f4 <.ml_z_of_float+0x4d4>
16a8: 7c e8 43 78 or r8,r7,r8
16ac: 7f 9d e3 78 mr r29,r28
16b0: f9 1c 00 08 std r8,8(r28)
16b4: 4b ff fe 50 b 1504 <.ml_z_of_float+0x2e4>
16b8: 60 00 00 00 nop
16bc: 60 00 00 00 nop
16c0: 38 e0 ff ff li r7,-1
16c4: 78 e7 00 04 rldicr r7,r7,0,0
16c8: 4b ff ff 4c b 1614 <.ml_z_of_float+0x3f4>
16cc: 3d 22 00 00 addis r9,r2,0
16d0: c8 09 00 00 lfd f0,0(r9)
16d4: ff 9f 00 00 fcmpu cr7,f31,f0
16d8: 4f dc f3 82 cror 4*cr7+eq,4*cr7+lt,4*cr7+eq
16dc: 40 fe fd 2c bne+ cr7,1408 <.ml_z_of_float+0x1e8>
16e0: 4b ff fe 24 b 1504 <.ml_z_of_float+0x2e4>
16e4: 60 00 00 00 nop
16e8: 60 00 00 00 nop
16ec: 60 00 00 00 nop
16f0: 41 de ff 74 beq- cr7,1664 <.ml_z_of_float+0x444>
16f4: e9 3c 00 10 ld r9,16(r28)
16f8: 39 40 ff ff li r10,-1
16fc: 79 4a 00 80 clrldi r10,r10,2
1700: 7f a9 50 40 cmpld cr7,r9,r10
1704: 41 9d ff a4 bgt cr7,16a8 <.ml_z_of_float+0x488>
1708: 2f a7 00 00 cmpdi cr7,r7,0
170c: 79 29 0f a4 rldicr r9,r9,1,62
1710: 23 a9 00 01 subfic r29,r9,1
1714: 40 9e fd f0 bne cr7,1504 <.ml_z_of_float+0x2e4>
1718: 3b a9 00 01 addi r29,r9,1
171c: 4b ff fd e8 b 1504 <.ml_z_of_float+0x2e4>
1720: 48 00 00 01 bl 1720 <.ml_z_of_float+0x500>
1724: 00 00 00 00 .long 0x0
1728: 00 00 02 01 .long 0x201
172c: 81 06 00 00 lwz r8,0(r6)
[-- Attachment #3: ppc64le.S --]
[-- Type: text/plain, Size: 8093 bytes --]
00000000000015a0 <ml_z_of_float>:
15a0: 00 00 4c 3c addis r2,r12,0
15a4: 00 00 42 38 addi r2,r2,0
15a8: a6 02 08 7c mflr r0
15ac: f8 ff e1 db stfd f31,-8(r1)
15b0: c8 ff 41 fb std r26,-56(r1)
15b4: 00 00 22 3d addis r9,r2,0
15b8: d0 ff 61 fb std r27,-48(r1)
15bc: d8 ff 81 fb std r28,-40(r1)
15c0: e0 ff a1 fb std r29,-32(r1)
15c4: e8 ff c1 fb std r30,-24(r1)
15c8: f0 ff e1 fb std r31,-16(r1)
15cc: 00 00 09 c8 lfd f0,0(r9)
15d0: 10 00 01 f8 std r0,16(r1)
15d4: 61 ff 21 f8 stdu r1,-160(r1)
15d8: 00 00 e3 cb lfd f31,0(r3)
15dc: 00 00 9f ff fcmpu cr7,f31,f0
15e0: 82 f3 dd 4f cror 4*cr7+eq,4*cr7+gt,4*cr7+eq
15e4: 18 00 9e 40 bne cr7,15fc <ml_z_of_float+0x5c>
15e8: 00 00 22 3d addis r9,r2,0
15ec: 00 00 09 c8 lfd f0,0(r9)
15f0: 00 00 9f ff fcmpu cr7,f31,f0
15f4: 82 f3 dc 4f cror 4*cr7+eq,4*cr7+lt,4*cr7+eq
15f8: a8 01 9e 41 beq cr7,17a0 <ml_z_of_float+0x200>
15fc: 66 00 e9 7f mfvsrd r9,vs31
1600: 60 65 28 79 rldicl r8,r9,12,53
1604: 01 fc 48 39 addi r10,r8,-1023
1608: 00 00 8a 2f cmpwi cr7,r10,0
160c: 58 01 9c 41 blt cr7,1764 <ml_z_of_float+0x1c4>
1610: 00 04 8a 2f cmpwi cr7,r10,1024
1614: 6c 02 de 41 beq- cr7,1880 <ml_z_of_float+0x2e0>
1618: 34 00 8a 2f cmpwi cr7,r10,52
161c: 10 00 c0 3f lis r30,16
1620: 00 03 29 79 clrldi r9,r9,12
1624: c6 07 de 7b rldicr r30,r30,32,31
1628: 78 f3 3e 7d or r30,r9,r30
162c: 54 00 9d 41 bgt cr7,1680 <ml_z_of_float+0xe0>
1630: d0 04 00 f0 xxlxor vs0,vs0,vs0
1634: 34 00 4a 21 subfic r10,r10,52
1638: 34 56 de 7f srad r30,r30,r10
163c: 00 00 9f ff fcmpu cr7,f31,f0
1640: a4 0f c3 7b rldicr r3,r30,1,62
1644: 01 00 63 38 addi r3,r3,1
1648: 82 f3 dd 4f cror 4*cr7+eq,4*cr7+gt,4*cr7+eq
164c: 94 01 9e 40 bne cr7,17e0 <ml_z_of_float+0x240>
1650: a0 00 21 38 addi r1,r1,160
1654: 10 00 01 e8 ld r0,16(r1)
1658: f8 ff e1 cb lfd f31,-8(r1)
165c: c8 ff 41 eb ld r26,-56(r1)
1660: d0 ff 61 eb ld r27,-48(r1)
1664: d8 ff 81 eb ld r28,-40(r1)
1668: e0 ff a1 eb ld r29,-32(r1)
166c: e8 ff c1 eb ld r30,-24(r1)
1670: f0 ff e1 eb ld r31,-16(r1)
1674: a6 03 08 7c mtlr r0
1678: 20 00 80 4e blr
167c: 00 00 42 60 ori r2,r2,0
1680: cd fb 08 39 addi r8,r8,-1075
1684: 00 00 62 3c addis r3,r2,0
1688: 00 00 63 e8 ld r3,0(r3)
168c: 01 00 c0 38 li r6,1
1690: b4 07 1f 7d extsw r31,r8
1694: 00 00 a0 38 li r5,0
1698: 74 36 ff 7f sradi r31,r31,6
169c: a0 06 1d 79 clrldi r29,r8,58
16a0: 03 00 9f 38 addi r4,r31,3
16a4: 24 1f fb 7b rldicr r27,r31,3,60
16a8: b4 07 84 7c extsw r4,r4
16ac: b4 07 ba 7f extsw r26,r29
16b0: 24 1f 84 78 rldicr r4,r4,3,60
16b4: 01 00 00 48 bl 16b4 <ml_z_of_float+0x114>
16b8: 00 00 00 60 nop
16bc: 00 00 9f 2f cmpwi cr7,r31,0
16c0: 78 1b 7c 7c mr r28,r3
16c4: 18 00 9d 40 ble cr7,16dc <ml_z_of_float+0x13c>
16c8: 78 db 65 7f mr r5,r27
16cc: 00 00 80 38 li r4,0
16d0: 10 00 63 38 addi r3,r3,16
16d4: 01 00 00 48 bl 16d4 <ml_z_of_float+0x134>
16d8: 00 00 00 60 nop
16dc: 00 00 ba 2f cmpdi cr7,r26,0
16e0: 14 e2 bb 7c add r5,r27,r28
16e4: 36 e8 c9 7f sld r9,r30,r29
16e8: 00 00 40 39 li r10,0
16ec: 10 00 25 f9 std r9,16(r5)
16f0: 0c 00 9e 41 beq cr7,16fc <ml_z_of_float+0x15c>
16f4: 40 00 bd 23 subfic r29,r29,64
16f8: 34 ee ca 7f srad r10,r30,r29
16fc: d0 04 00 f0 xxlxor vs0,vs0,vs0
1700: 02 00 3f 39 addi r9,r31,2
1704: 18 00 45 f9 std r10,24(r5)
1708: 00 00 e0 38 li r7,0
170c: b4 07 29 7d extsw r9,r9
1710: 00 00 9f ff fcmpu cr7,f31,f0
1714: 78 4b 28 7d mr r8,r9
1718: 82 f3 dd 4f cror 4*cr7+eq,4*cr7+gt,4*cr7+eq
171c: 24 01 9e 40 bne cr7,1840 <ml_z_of_float+0x2a0>
1720: 00 00 a9 2f cmpdi cr7,r9,0
1724: 28 01 9d 40 ble cr7,184c <ml_z_of_float+0x2ac>
1728: 24 1f 2a 79 rldicr r10,r9,3,60
172c: 14 e2 4a 7d add r10,r10,r28
1730: 08 00 4a e9 ld r10,8(r10)
1734: 00 00 aa 2f cmpdi cr7,r10,0
1738: e8 00 9e 40 bne cr7,1820 <ml_z_of_float+0x280>
173c: a6 03 29 7d mtctr r9
1740: 24 1f 2a 79 rldicr r10,r9,3,60
1744: 08 00 4a 39 addi r10,r10,8
1748: 14 e2 4a 7d add r10,r10,r28
174c: 10 00 00 48 b 175c <ml_z_of_float+0x1bc>
1750: f9 ff 2a e9 ldu r9,-8(r10)
1754: 00 00 a9 2f cmpdi cr7,r9,0
1758: c8 00 9e 40 bne cr7,1820 <ml_z_of_float+0x280>
175c: ff ff 08 39 addi r8,r8,-1
1760: f0 ff 00 42 bdnz 1750 <ml_z_of_float+0x1b0>
1764: a0 00 21 38 addi r1,r1,160
1768: 01 00 60 38 li r3,1
176c: 10 00 01 e8 ld r0,16(r1)
1770: f8 ff e1 cb lfd f31,-8(r1)
1774: c8 ff 41 eb ld r26,-56(r1)
1778: d0 ff 61 eb ld r27,-48(r1)
177c: d8 ff 81 eb ld r28,-40(r1)
1780: e0 ff a1 eb ld r29,-32(r1)
1784: e8 ff c1 eb ld r30,-24(r1)
1788: f0 ff e1 eb ld r31,-16(r1)
178c: a6 03 08 7c mtlr r0
1790: 20 00 80 4e blr
1794: 00 00 00 60 nop
1798: 00 00 00 60 nop
179c: 00 00 42 60 ori r2,r2,0
17a0: 5e fe e0 ff fctidz f31,f31
17a4: a0 00 21 38 addi r1,r1,160
17a8: 10 00 01 e8 ld r0,16(r1)
17ac: c8 ff 41 eb ld r26,-56(r1)
17b0: d0 ff 61 eb ld r27,-48(r1)
17b4: d8 ff 81 eb ld r28,-40(r1)
17b8: e0 ff a1 eb ld r29,-32(r1)
17bc: e8 ff c1 eb ld r30,-24(r1)
17c0: f0 ff e1 eb ld r31,-16(r1)
17c4: a6 03 08 7c mtlr r0
17c8: 66 00 e3 7f mfvsrd r3,vs31
17cc: f8 ff e1 cb lfd f31,-8(r1)
17d0: a4 0f 63 78 rldicr r3,r3,1,62
17d4: 01 00 63 38 addi r3,r3,1
17d8: 20 00 80 4e blr
17dc: 00 00 42 60 ori r2,r2,0
17e0: a0 00 21 38 addi r1,r1,160
17e4: a4 0f de 7b rldicr r30,r30,1,62
17e8: 01 00 7e 20 subfic r3,r30,1
17ec: 10 00 01 e8 ld r0,16(r1)
17f0: f8 ff e1 cb lfd f31,-8(r1)
17f4: c8 ff 41 eb ld r26,-56(r1)
17f8: d0 ff 61 eb ld r27,-48(r1)
17fc: d8 ff 81 eb ld r28,-40(r1)
1800: e0 ff a1 eb ld r29,-32(r1)
1804: e8 ff c1 eb ld r30,-24(r1)
1808: f0 ff e1 eb ld r31,-16(r1)
180c: a6 03 08 7c mtlr r0
1810: 20 00 80 4e blr
1814: 00 00 00 60 nop
1818: 00 00 00 60 nop
181c: 00 00 42 60 ori r2,r2,0
1820: 01 00 a8 2f cmpdi cr7,r8,1
1824: 2c 00 9e 41 beq cr7,1850 <ml_z_of_float+0x2b0>
1828: 78 43 e8 7c or r8,r7,r8
182c: 78 e3 83 7f mr r3,r28
1830: 08 00 1c f9 std r8,8(r28)
1834: 1c fe ff 4b b 1650 <ml_z_of_float+0xb0>
1838: 00 00 00 60 nop
183c: 00 00 42 60 ori r2,r2,0
1840: ff ff e0 38 li r7,-1
1844: 04 00 e7 78 rldicr r7,r7,0,0
1848: d8 fe ff 4b b 1720 <ml_z_of_float+0x180>
184c: 18 ff de 41 beq- cr7,1764 <ml_z_of_float+0x1c4>
1850: 10 00 3c e9 ld r9,16(r28)
1854: ff ff 40 39 li r10,-1
1858: 80 00 4a 79 clrldi r10,r10,2
185c: 40 50 a9 7f cmpld cr7,r9,r10
1860: c8 ff 9d 41 bgt cr7,1828 <ml_z_of_float+0x288>
1864: 00 00 a7 2f cmpdi cr7,r7,0
1868: a4 0f 23 79 rldicr r3,r9,1,62
186c: 0c 00 9e 41 beq cr7,1878 <ml_z_of_float+0x2d8>
1870: 01 00 63 20 subfic r3,r3,1
1874: dc fd ff 4b b 1650 <ml_z_of_float+0xb0>
1878: 01 00 63 38 addi r3,r3,1
187c: d4 fd ff 4b b 1650 <ml_z_of_float+0xb0>
1880: 01 00 00 48 bl 1880 <ml_z_of_float+0x2e0>
1884: 00 00 00 00 .long 0x0
1888: 00 00 02 01 .long 0x1020000
188c: 81 06 00 00 .long 0x681
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Caml-list] Zarith problems on ppc64le
2016-11-07 14:59 ` Simon Cruanes
@ 2016-11-15 9:11 ` Bernhard Schommer
0 siblings, 0 replies; 11+ messages in thread
From: Bernhard Schommer @ 2016-11-15 9:11 UTC (permalink / raw)
To: Simon Cruanes; +Cc: Sylvain Le Gall, Francois BERENGER, caml-list
I would support a move to github, it would also make issue tracking
and patch reporting a lot easier.
2016-11-07 15:59 GMT+01:00 Simon Cruanes <simon.cruanes.2007@m4x.org>:
> Not really related, but this could be the occasion to move Zarith to
> github for good, so that we can finally host its documentation somewhere
> (gh-pages) and contribute.
>
>
> --
> Simon Cruanes
>
> http://weusepgp.info/
> key 49AA62B6, fingerprint 949F EB87 8F06 59C6 D7D3 7D8D 4AC0 1D08 49AA 62B6
^ permalink raw reply [flat|nested] 11+ messages in thread
end of thread, other threads:[~2016-11-15 9:11 UTC | newest]
Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-11-07 13:22 [Caml-list] Zarith problems on ppc64le Richard W.M. Jones
2016-11-07 13:31 ` Nicolas Ojeda Bar
2016-11-07 13:55 ` Francois BERENGER
2016-11-07 14:11 ` Sylvain Le Gall
2016-11-07 14:59 ` Simon Cruanes
2016-11-15 9:11 ` Bernhard Schommer
2016-11-07 15:48 ` Richard W.M. Jones
2016-11-07 15:58 ` Xavier Leroy
2016-11-07 16:19 ` Richard W.M. Jones
2016-11-08 10:00 ` Goswin von Brederlow
2016-11-08 11:10 ` Richard W.M. Jones
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