[Bug 257482] make buildworld clang stops running 12.1-p13 compiling 12.2-RELEASE sources

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=257482

            Bug ID: 257482
           Summary: make buildworld clang stops running 12.1-p13 compiling
                    12.2-RELEASE sources
           Product: Base System
           Version: 12.2-RELEASE
          Hardware: arm64
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: helio.luchtenberg@gmail.com

While compiling "make buildworld" (running FreeBSD 12.1-p13) inside "/usr/src"
for version 12.2, trying to make the upgrade from 12.1-RELEASE-p13 to
12.2-RELEASE.

I can repeat this many times.  Won't attach two suggested files for now:
3872 -rw-r--r--  1 root  wheel  3903165 Jul 28 22:35 /tmp/TGParser-038627.cpp
   8 -rw-r--r--  1 root  wheel     5340 Jul 28 22:35 /tmp/TGParser-038627.sh

During "make buildworld" it stops and suggests me to fill a bug report, see:

--- TableGen/TGParser.o ---
c++: error: unable to execute command: Segmentation fault
c++: error: clang frontend command failed due to signal (use -v to see
invocation)
FreeBSD clang version 8.0.1 (tags/RELEASE_801/final 366581) (based on LLVM
8.0.1)
Target: x86_64-unknown-freebsd12.1
Thread model: posix
InstalledDir: /usr/bin
c++: note: diagnostic msg: PLEASE submit a bug report to
https://bugs.freebsd.org/submit/ and include the crash backtrace, preprocessed
source, and associated run script.
c++: note: diagnostic msg:
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
c++: note: diagnostic msg: /tmp/TGParser-038627.cpp
c++: note: diagnostic msg: /tmp/TGParser-038627.sh
c++: note: diagnostic msg:

********************
*** [TableGen/TGParser.o] Error code 254

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