Tests are failing on arm64 about isa-l

[gbtucker]

Illegal instruction in only functions with CRC sounds like some aarch64 don't support the optimizations.
@onovy, can you give some detail on the arm board used?

@zhiyuan-zhu, in the review you said:

"It will not affect other arm machines, because 64 bit arm machines is supported from start armv8, all 64 bit arm machines should support the feature."

Are you sure this is true?

[onovy]

information from IRC:
Sledge | onovy: it's based on APM X-Gene 1
Sledge | so it doesn't have the extra optional instructions for crypto and checksumming

[steve-mcintyre]

The machine that build is running on is based on the Applied Micro X-Gene 1, so IIRC it doesn't have the optional crypto extensions.

[gbtucker]

Thanks. The optimizations heavily use the vector pmull instruction. If this isn't in all armv8 then we need to have a better multi-binary check or configure test.

[zhiyuan-zhu]

Hi All, sorry for inconvenience.
@onovy @steve-mcintyre

1. can you help give the machine's cpu info
2. can you give me the file: test-suite.log
3. Can you identify which instruction Illegal?

And @gbtucker
4. We are working on a better multi-binary check, whether this issue urgent? We can temporarily give a short-term plan, set all functions to the default base function.

[gbtucker]

@zhiyuan-zhu, yes we should pull the aarch64 crc optimization back to base functions until a multi-binary or configure test will allow it to work for all arch.

@steve-mcintyre , Could you help me cat cpuinfo of X-Gene? the command is cat /proc/cpuinfo
Thanks

[steve-mcintyre]

Sorry, been swamped with other stuff. Hope this is still useful:

$ cat /proc/cpuinfo
processor : 0
BogoMIPS : 100.00
Features : fp asimd evtstrm cpuid
CPU implementer : 0x50
CPU architecture: 8
CPU variant : 0x0
CPU part : 0x000
CPU revision : 0

processor : 1
BogoMIPS : 100.00
Features : fp asimd evtstrm cpuid
CPU implementer : 0x50
CPU architecture: 8
CPU variant : 0x0
CPU part : 0x000
CPU revision : 0

processor : 2
BogoMIPS : 100.00
Features : fp asimd evtstrm cpuid
CPU implementer : 0x50
CPU architecture: 8
CPU variant : 0x0
CPU part : 0x000
CPU revision : 0

processor : 3
BogoMIPS : 100.00
Features : fp asimd evtstrm cpuid
CPU implementer : 0x50
CPU architecture: 8
CPU variant : 0x0
CPU part : 0x000
CPU revision : 0

processor : 4
BogoMIPS : 100.00
Features : fp asimd evtstrm cpuid
CPU implementer : 0x50
CPU architecture: 8
CPU variant : 0x0
CPU part : 0x000
CPU revision : 0

processor : 5
BogoMIPS : 100.00
Features : fp asimd evtstrm cpuid
CPU implementer : 0x50
CPU architecture: 8
CPU variant : 0x0
CPU part : 0x000
CPU revision : 0

processor : 6
BogoMIPS : 100.00
Features : fp asimd evtstrm cpuid
CPU implementer : 0x50
CPU architecture: 8
CPU variant : 0x0
CPU part : 0x000
CPU revision : 0

processor : 7
BogoMIPS : 100.00
Features : fp asimd evtstrm cpuid
CPU implementer : 0x50
CPU architecture: 8
CPU variant : 0x0
CPU part : 0x000
CPU revision : 0

Thanks @steve-mcintyre .