[llvm-bugs] [Bug 50297] New: illegal instruction running swift on amd ubuntu 20.4

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=50297

            Bug ID: 50297
           Summary: illegal instruction running swift on amd ubuntu 20.4
           Product: new-bugs
           Version: 5.0
          Hardware: Other
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: dave.diamond at gmail.com
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org

I created a fresh rackspace server to play with swift on Ubuntu 20.04

first run of swift --version crashed (not getting a core dump for some reason)
- let me know if there's additional information needed or anything I can do to
help.

dld at dude:~$ swift --version
PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash
backtrace.
Stack dump:
0.      Program arguments: swift --version 
1.      Swift version 5.4 (swift-5.4-RELEASE)
swift[0x55f5064]
swift[0x55f2c5e]
swift[0x55f5245]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x153c0)[0x7f55da1183c0]
swift[0x1a92609]
swift[0x1a8c61f]
swift[0x49d743]
swift[0x49cb51]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0x7f55d9ba10b3]
swift[0x49c66e]
Illegal instruction

dld at dude:~$ ls -l swift-5.4-RELEASE-ubuntu20.04.tar.gz 
-rw-rw-r-- 1 dld dld 508197220 Apr 26 05:30
swift-5.4-RELEASE-ubuntu20.04.tar.gz

dld at dude:~$ uname -a
Linux dude 5.4.0-66-generic #74-Ubuntu SMP Wed Jan 27 22:54:38 UTC 2021 x86_64
x86_64 x86_64 GNU/Linux

dld at dude:~$ clang --version
clang version 10.0.0 (git at github.com:apple/llvm-project.git
439a44695a0534a26557cc34b4fe650dccb46aed)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/dld/swift-5.4-RELEASE-ubuntu20.04/usr/bin

dld at dude:~$ cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 16
model           : 8
model name      : AMD Opteron(tm) Processor 4170 HE
stepping        : 1
microcode       : 0x10000d9
cpu MHz         : 2100.094
cache size      : 512 KB
physical id     : 0
siblings        : 1
core id         : 0
cpu cores       : 1
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 5
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt pdpe1gb rdtscp
lm 3dnowext 3dnow rep_good nopl cpuid extd_apicid pni cx16 x2apic popcnt
hypervisor lahf_lm cr8_legacy abm sse4a misalignsse 3dnowprefetch ibs vmmcall
bugs            : tlb_mmatch fxsave_leak sysret_ss_attrs null_seg amd_e400
spectre_v1 spectre_v2
bogomips        : 4200.01
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 48 bits physical, 48 bits virtual
power management:

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