Thanks Zoltán for the heads up. I can work on fixing the reported issues. Is there a log of the output and instructions on how to reproduce the problems? I would need the configure or cmake line and the make command.
Thanks, Sebastian On Wed, Oct 30, 2019 at 1:28 PM Zoltán Herczeg <hzmes...@freemail.hu> wrote: > Hi Sebastian, > > could you check this failure? > > Regards, > Zoltan > > -------- Eredeti levél -------- > Feladó: Petr Pisar via Pcre-dev < pcre-dev@exim.org (Link -> mailto: > pcre-dev@exim.org) > > Dátum: 2019 október 30 18:25:42 > Tárgy: Re: [pcre-dev] JIT fails with NEON instructions > Címzett: pcre-dev@exim.org (Link -> mailto:pcre-dev@exim.org) > On Wed, Oct 30, 2019 at 03:38:45PM +0100, Petr Pisar via Pcre-dev wrote: > > On Thu, Oct 17, 2019 at 05:54:08PM +0100, p...@hermes.cam.ac.uk wrote: > > > I have just made available a Release Candidate for PCRE2 10.34 here: > > > > > > https://ftp.pcre.org/pub/pcre/Testing/pcre2-10.34-RC1.tar.gz > > > https://ftp.pcre.org/pub/pcre/Testing/pcre2-10.34-RC1.tar.bz2 > > > https://ftp.pcre.org/pub/pcre/Testing/pcre2-10.34-RC1.tar.zip > > > > > > NOTE: this is a different FTP site than was used for previous releases. > > > > > I experience two test failures on 64-bit ARM with Fedora 32 distribution: > > > Both failures are triggered by this PCRE2 commit: > commit a6b4b9c7f9e3d20966de682487ee575cba053a20 > Author: zherczeg <zherczeg@6239d852-aaf2-0410-a92c-79f79f948069> > Date: Tue Sep 17 06:59:45 2019 +0000 > Support NEON based fast forward character search in ARM64. Patch by > Sebastian Pop. > git-svn-id: svn://vcs.exim.org/pcre2/code/trunk@1172 > 6239d852-aaf2-0410-a92c-79f79f948 > 069 > I verified it on this machine: > # lscpu > Architecture: aarch64 > CPU op-mode(s): 64-bit > Byte Order: Little Endian > CPU(s): 4 > On-line CPU(s) list: 0-3 > Thread(s) per core: 1 > Core(s) per socket: 4 > Socket(s): 1 > NUMA node(s): 1 > Vendor ID: Cavium > Model: 1 > Model name: ThunderX2 99xx > Stepping: 0x1 > BogoMIPS: 400.00 > NUMA node0 CPU(s): 0-3 > Vulnerability L1tf: Not affected > Vulnerability Mds: Not affected > Vulnerability Meltdown: Not affected > Vulnerability Spec store bypass: Vulnerable > Vulnerability Spectre v1: Mitigation; __user pointer sanitization > Vulnerability Spectre v2: Vulnerable > Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics cpuid > asimdrdm > using Fedora 31 (gcc-9.2.1, binutils-2.32). > The compiler defines __ARM_NEON macro on that machine. getauxval(AT_HWCAP) > sets > HWCAP_ASIMD bit. So I believe the machine supports NEON. > When I disable the > #if (defined SLJIT_CONFIG_ARM_64 && SLJIT_CONFIG_ARM_64 && (defined > __ARM_NEON || defined > __ARM_NEON__)) > branch in src/pcre2_jit_compile.c not to emit NEON instructions, all tests > pass on that machine. > This I conclude something is wrong in the NEON support in sljit. > -- Petr > -- ## List details at https://lists.exim.org/mailman/listinfo/pcre-dev
