[clang] [clang][FMV] Do not omit explicit default target_version attribute. (PR #96628)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-ppc64be-linux` running on `ppc64be-sanitizer` while building `clang` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/109/builds/643

Here is the relevant piece of the build log for the reference:
```
Step 2 (annotate) failure: 'python ../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py' (failure)
...
PASS: Profile-powerpc64 :: Linux/instrprof-dlopen.test (388 of 2421)
PASS: ThreadSanitizer-powerpc64 :: fd_location.cpp (389 of 2421)
PASS: SanitizerCommon-tsan-powerpc64-Linux :: Posix/mmap_write_exec.cpp (390 of 2421)
XFAIL: SanitizerCommon-tsan-powerpc64-Linux :: Linux/allow_user_segv.cpp (391 of 2421)
XFAIL: SanitizerCommon-tsan-powerpc64-Linux :: Posix/dump_registers.cpp (392 of 2421)
PASS: ThreadSanitizer-powerpc64 :: java_finalizer2.cpp (393 of 2421)
PASS: SanitizerCommon-msan-powerpc64-Linux :: Posix/sanitizer_set_report_fd_test.cpp (394 of 2421)
PASS: ThreadSanitizer-powerpc64 :: cond_destruction.cpp (395 of 2421)
XFAIL: SanitizerCommon-tsan-powerpc64-Linux :: Posix/sanitizer_set_report_fd_test.cpp (396 of 2421)
PASS: ThreadSanitizer-powerpc64 :: pthread_atfork_deadlock2.c (397 of 2421)
FAIL: ThreadSanitizer-powerpc64 :: signal_block.cpp (398 of 2421)
******************** TEST 'ThreadSanitizer-powerpc64 :: signal_block.cpp' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 1: /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/build_debug/./bin/clang  -fsanitize=thread -Wall  -m64   -gline-tables-only -I/home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/llvm-project/compiler-rt/test/tsan/../ -O1 /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/llvm-project/compiler-rt/test/tsan/signal_block.cpp -o /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/build_debug/runtimes/runtimes-bins/compiler-rt/test/tsan/POWERPC64Config/Output/signal_block.cpp.tmp &&  /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/build_debug/runtimes/runtimes-bins/compiler-rt/test/tsan/POWERPC64Config/Output/signal_block.cpp.tmp 2>&1 | FileCheck /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/llvm-project/compiler-rt/test/tsan/signal_block.cpp
+ /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/build_debug/./bin/clang -fsanitize=thread -Wall -m64 -gline-tables-only -I/home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/llvm-project/compiler-rt/test/tsan/../ -O1 /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/llvm-project/compiler-rt/test/tsan/signal_block.cpp -o /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/build_debug/runtimes/runtimes-bins/compiler-rt/test/tsan/POWERPC64Config/Output/signal_block.cpp.tmp
+ /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/build_debug/runtimes/runtimes-bins/compiler-rt/test/tsan/POWERPC64Config/Output/signal_block.cpp.tmp
+ FileCheck /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/llvm-project/compiler-rt/test/tsan/signal_block.cpp
/home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/llvm-project/compiler-rt/test/tsan/signal_block.cpp:59:15: error: CHECK-NOT: excluded string found in input
// CHECK-NOT: WARNING: ThreadSanitizer:
              ^
<stdin>:2:1: note: found here
WARNING: ThreadSanitizer: signal handler spoils errno (pid=134856)
^~~~~~~~~~~~~~~~~~~~~~~~~

Input file: <stdin>
Check file: /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/llvm-project/compiler-rt/test/tsan/signal_block.cpp

-dump-input=help explains the following input dump.

Input was:
<<<<<<
        1: ================== 
        2: WARNING: ThreadSanitizer: signal handler spoils errno (pid=134856) 
not:59     !~~~~~~~~~~~~~~~~~~~~~~~~                                           error: no match expected
        3:  Signal 10 handler invoked at: 
        4:  #0 _DYNAMIC <null> (signal_block.cpp.tmp+0x16fe68) 
        5:  #1 thread(void*) /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/llvm-project/compiler-rt/test/tsan/signal_block.cpp:25:5 (signal_block.cpp.tmp+0x11cf8c) 
        6:  
        7: SUMMARY: ThreadSanitizer: signal handler spoils errno (/home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/build_debug/runtimes/runtimes-bins/compiler-rt/test/tsan/POWERPC64Config/Output/signal_block.cpp.tmp+0x16fe68) in _DYNAMIC 
        8: ================== 
        9: DONE 
       10: ThreadSanitizer: reported 1 warnings 
>>>>>>

--

Step 11 (test compiler-rt debug) failure: test compiler-rt debug (failure)
...
PASS: Profile-powerpc64 :: Linux/instrprof-dlopen.test (388 of 2421)
PASS: ThreadSanitizer-powerpc64 :: fd_location.cpp (389 of 2421)
PASS: SanitizerCommon-tsan-powerpc64-Linux :: Posix/mmap_write_exec.cpp (390 of 2421)
XFAIL: SanitizerCommon-tsan-powerpc64-Linux :: Linux/allow_user_segv.cpp (391 of 2421)
XFAIL: SanitizerCommon-tsan-powerpc64-Linux :: Posix/dump_registers.cpp (392 of 2421)
PASS: ThreadSanitizer-powerpc64 :: java_finalizer2.cpp (393 of 2421)
PASS: SanitizerCommon-msan-powerpc64-Linux :: Posix/sanitizer_set_report_fd_test.cpp (394 of 2421)
PASS: ThreadSanitizer-powerpc64 :: cond_destruction.cpp (395 of 2421)
XFAIL: SanitizerCommon-tsan-powerpc64-Linux :: Posix/sanitizer_set_report_fd_test.cpp (396 of 2421)
PASS: ThreadSanitizer-powerpc64 :: pthread_atfork_deadlock2.c (397 of 2421)
FAIL: ThreadSanitizer-powerpc64 :: signal_block.cpp (398 of 2421)
******************** TEST 'ThreadSanitizer-powerpc64 :: signal_block.cpp' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 1: /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/build_debug/./bin/clang  -fsanitize=thread -Wall  -m64   -gline-tables-only -I/home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/llvm-project/compiler-rt/test/tsan/../ -O1 /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/llvm-project/compiler-rt/test/tsan/signal_block.cpp -o /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/build_debug/runtimes/runtimes-bins/compiler-rt/test/tsan/POWERPC64Config/Output/signal_block.cpp.tmp &&  /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/build_debug/runtimes/runtimes-bins/compiler-rt/test/tsan/POWERPC64Config/Output/signal_block.cpp.tmp 2>&1 | FileCheck /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/llvm-project/compiler-rt/test/tsan/signal_block.cpp
+ /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/build_debug/./bin/clang -fsanitize=thread -Wall -m64 -gline-tables-only -I/home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/llvm-project/compiler-rt/test/tsan/../ -O1 /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/llvm-project/compiler-rt/test/tsan/signal_block.cpp -o /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/build_debug/runtimes/runtimes-bins/compiler-rt/test/tsan/POWERPC64Config/Output/signal_block.cpp.tmp
+ /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/build_debug/runtimes/runtimes-bins/compiler-rt/test/tsan/POWERPC64Config/Output/signal_block.cpp.tmp
+ FileCheck /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/llvm-project/compiler-rt/test/tsan/signal_block.cpp
/home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/llvm-project/compiler-rt/test/tsan/signal_block.cpp:59:15: error: CHECK-NOT: excluded string found in input
// CHECK-NOT: WARNING: ThreadSanitizer:
              ^
<stdin>:2:1: note: found here
WARNING: ThreadSanitizer: signal handler spoils errno (pid=134856)
^~~~~~~~~~~~~~~~~~~~~~~~~

Input file: <stdin>
Check file: /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/llvm-project/compiler-rt/test/tsan/signal_block.cpp

-dump-input=help explains the following input dump.

Input was:
<<<<<<
        1: ================== 
        2: WARNING: ThreadSanitizer: signal handler spoils errno (pid=134856) 
not:59     !~~~~~~~~~~~~~~~~~~~~~~~~                                           error: no match expected
        3:  Signal 10 handler invoked at: 
        4:  #0 _DYNAMIC <null> (signal_block.cpp.tmp+0x16fe68) 
        5:  #1 thread(void*) /home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/llvm-project/compiler-rt/test/tsan/signal_block.cpp:25:5 (signal_block.cpp.tmp+0x11cf8c) 
        6:  
        7: SUMMARY: ThreadSanitizer: signal handler spoils errno (/home/buildbots/llvm-external-buildbots/workers/ppc64be-sanitizer/sanitizer-ppc64be/build/build_debug/runtimes/runtimes-bins/compiler-rt/test/tsan/POWERPC64Config/Output/signal_block.cpp.tmp+0x16fe68) in _DYNAMIC 
        8: ================== 
        9: DONE 
       10: ThreadSanitizer: reported 1 warnings 
>>>>>>

--


```

https://github.com/llvm/llvm-project/pull/96628