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Date:      Sat, 17 Oct 2015 07:46:10 -0700
From:      Bryan Drewery <bdrewery@FreeBSD.org>
To:        NGie Cooper <yaneurabeya@gmail.com>
Cc:        "jenkins-admin@FreeBSD.org" <jenkins-admin@FreeBSD.org>, "ngie@FreeBSD.org" <ngie@FreeBSD.org>, "freebsd-current@FreeBSD.org" <freebsd-current@FreeBSD.org>
Subject:   Re: FreeBSD_HEAD_amd64_gcc4.9 - Build #673 - Failure
Message-ID:  <FC28E5A5-BF2D-45AA-A50B-963409CEF23F@FreeBSD.org>
In-Reply-To: <78883694-7B54-4AC3-9B5B-D715D5DA1F88@gmail.com>
References:  <1743862498.27.1445058611319.JavaMail.jenkins@jenkins-9.freebsd.org> <5621D9F1.9080707@FreeBSD.org> <5621DDB1.8020807@FreeBSD.org> <31F4FEC4-B677-4EA1-BD67-F2DC458A99E4@gmail.com> <2B9A4B89-6D0D-4549-B249-FB30A8117DDF@gmail.com> <78883694-7B54-4AC3-9B5B-D715D5DA1F88@gmail.com>

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> On Oct 17, 2015, at 00:09, NGie Cooper <yaneurabeya@gmail.com> wrote:
>=20
>=20
>>> On Oct 16, 2015, at 23:38, NGie Cooper <yaneurabeya@gmail.com> wrote:
>>>=20
>>>> On Oct 16, 2015, at 23:26, NGie Cooper <yaneurabeya@gmail.com> wrote:
>>>>=20
>>>> On Oct 16, 2015, at 22:33, Bryan Drewery <bdrewery@FreeBSD.org> wrote:
>>>=20
>>> ...
>>>=20
>>>>> I don't see how these changes cause this and I'm unable to reproduce
>>>>> here.  Is anyone else hitting this?
>>>>=20
>>>> https://jenkins.freebsd.org/job/FreeBSD_HEAD_sparc64/lastBuild/consoleT=
ext
>>>>=20
>>>> The sparc64 build is past this. I don't think it was due to my changes,=

>>>> which were largely a NOP.
>>>>=20
>>>> I'm going to bed now, will look more tomorrow.
>>>=20
>>> I just hit it on my 10.2-RELEASE host with dual-SSDs and gobs of RAM. It=
=E2=80=99s a race somewhere in the clang build=E2=80=A6 just not sure where y=
et.
>>> Thanks,
>>> -NGie
>>>=20
>>> --- arm_neon.h ---
>>> clang-tblgen -gen-arm-neon  -d arm_neon.d -o arm_neon.h  /home/ngie/git/=
freebsd/src/lib/clang/include/../../../contrib/llvm/tools/clang/include/clan=
g/Basic/arm_neon.td
>>> /home/ngie/git/freebsd/src/lib/clang/include/../../../contrib/llvm/tools=
/clang/include/clang/Basic/arm_neon.td:701:1: error: Record `VMOVL' does not=
 have a field named `Operand'!
>>>=20
>>> def VMOVL        : SInst<"vmovl", "wd",  "csiUcUsUi">;
>>>=20
>>> *** [arm_neon.h] Error code 1
>>=20
>> And=E2=80=A6 FWIW I=E2=80=99m not sure your last set of changes caused th=
is. Needs more investigation.
>> Thanks!
>> -NGie
>=20
> Hmm=E2=80=A6 it=E2=80=99s the only generated header:
>=20
> 67 GENINCS=3D arm_neon.h
> 68 CLEANFILES=3D ${GENINCS} ${GENINCS:C/\.h$/.d/}
>=20
> Well, lookie here:
>=20
> $ make clean
> rm -f arm_neon.h arm_neon.d
> $ make arm_neon.h
> clang-tblgen -gen-arm-neon  -d arm_neon.d -o arm_neon.h  /home/ngie/git/fr=
eebsd/src/lib/clang/include/../../../contrib/llvm/tools/clang/include/clang/=
Basic/arm_neon.td
> /home/ngie/git/freebsd/src/lib/clang/include/../../../contrib/llvm/tools/c=
lang/include/clang/Basic/arm_neon.td:701:1: error: Record `VMOVL' does not h=
ave a field named `Operand'!
>=20
> def VMOVL        : SInst<"vmovl", "wd",  "csiUcUsUi">;
> ^
> *** Error code 1
>=20
> Stop.
> make: stopped in /home/ngie/git/freebsd/src/lib/clang/include
>=20
> The important thing to note is the Jenkins servers are running stable/10 c=
ode too (IIRC), so it might be a mismatch in the tools.
>=20
> Also, this logic looks troublesome:
>=20
> 42 .if empty(TOOLSDIR) || !exists(${TOOLSDIR}/usr/bin/clang-tblgen)
> 43 .if ${MACHINE} =3D=3D "host" && defined(BOOTSTRAPPING_TOOLS)
> 44 .if !empty(LEGACY_TOOLS) && exists(${LEGACY_TOOLS}/usr/bin/tblgen)
> 45 TOOLSDIR=3D ${LEGACY_TOOLS}
> 46 .endif
> 47 .endif
> 48 .if ${MK_STAGING} =3D=3D "yes" && exists(${STAGE_HOST_OBJTOP:Uno}/usr/b=
in/tblgen)
> 49 TOOLSDIR=3D ${STAGE_HOST_OBJTOP}
> 50 .endif
> 51 .if exists(${LEGACY_TOOLS:Uno}/usr/bin/tblgen)
> 52 TOOLSDIR=3D ${LEGACY_TOOLS}
> 53 .endif
> 54 .endif
> 55 TOOLSDIR?=3D
> 56 .if !empty(TOOLSDIR) && exists(${TOOLSDIR}/usr/bin/clang-tblgen)
> 57 TBLGEN=3D ${TOOLSDIR}/usr/bin/tblgen
> 58 CLANG_TBLGEN=3D ${TOOLSDIR}/usr/bin/clang-tblgen
> 59 .endif
> 60 TBLGEN?=3D        tblgen
> 61 CLANG_TBLGEN?=3D  clang-tblgen
>=20
> This kind of complexity matched something that I simplified at $work due t=
o build races=E2=80=A6
>=20
> Guess what happens when I use a proper clang-tblgen?
>=20
> $ make all
> /usr/obj/home/ngie/git/freebsd/src/usr.bin/clang/clang-tblgen/clang-tblgen=
 -gen-arm-neon  -d arm_neon.d -o arm_neon.h  /home/ngie/git/freebsd/src/lib/=
clang/include/../../../contrib/llvm/tools/clang/include/clang/Basic/arm_neon=
.td
> $
>=20
> Voila.
>=20
> So this is happening because it=E2=80=99s using clang-tblgen from the buil=
d host somehow, which is not able to process the .td files.

Hm, I will look more shortly.

>=20
> Thanks!
> -NGie



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