[llvm] [RISCV] Custom legalize vXf16 BUILD_VECTOR without Zfhmin. (PR #97874)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-ppc64le-linux` running on `ppc64le-sanitizer` while building `llvm` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/72/builds/899

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: MemorySanitizer-POWERPC64LE :: heap-origin.cpp (2429 of 2451)
PASS: MemorySanitizer-POWERPC64LE :: check_mem_is_initialized.cpp (2430 of 2451)
PASS: MemorySanitizer-POWERPC64LE :: stack-origin2.cpp (2431 of 2451)
PASS: SanitizerCommon-tsan-powerpc64le-Linux :: max_allocation_size.cpp (2432 of 2451)
PASS: MemorySanitizer-POWERPC64LE :: use-after-free.cpp (2433 of 2451)
PASS: ScudoStandalone-Unit :: ./ScudoUnitTest-powerpc64le-Test/138/267 (2434 of 2451)
PASS: MemorySanitizer-POWERPC64LE :: Linux/cmsghdr.cpp (2435 of 2451)
PASS: MemorySanitizer-POWERPC64LE :: stack-origin.cpp (2436 of 2451)
PASS: ThreadSanitizer-powerpc64le :: bench_threads.cpp (2437 of 2451)
PASS: MemorySanitizer-POWERPC64LE :: recover.cpp (2438 of 2451)
FAIL: ThreadSanitizer-powerpc64le :: signal_reset.cpp (2439 of 2451)
******************** TEST 'ThreadSanitizer-powerpc64le :: signal_reset.cpp' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 1: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_debug/./bin/clang  --driver-mode=g++ -fsanitize=thread -Wall  -m64 -fno-function-sections   -gline-tables-only -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/../ -std=c++11 -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/../ -nostdinc++ -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_debug/runtimes/runtimes-bins/compiler-rt/lib/tsan/libcxx_tsan_powerpc64le/include/c++/v1 -O1 /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/signal_reset.cpp -o /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_debug/runtimes/runtimes-bins/compiler-rt/test/tsan/POWERPC64LEConfig/Output/signal_reset.cpp.tmp &&  /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_debug/runtimes/runtimes-bins/compiler-rt/test/tsan/POWERPC64LEConfig/Output/signal_reset.cpp.tmp 2>&1 | FileCheck /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/signal_reset.cpp
+ /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_debug/./bin/clang --driver-mode=g++ -fsanitize=thread -Wall -m64 -fno-function-sections -gline-tables-only -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/../ -std=c++11 -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/../ -nostdinc++ -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_debug/runtimes/runtimes-bins/compiler-rt/lib/tsan/libcxx_tsan_powerpc64le/include/c++/v1 -O1 /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/signal_reset.cpp -o /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_debug/runtimes/runtimes-bins/compiler-rt/test/tsan/POWERPC64LEConfig/Output/signal_reset.cpp.tmp
+ /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_debug/runtimes/runtimes-bins/compiler-rt/test/tsan/POWERPC64LEConfig/Output/signal_reset.cpp.tmp
+ FileCheck /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/signal_reset.cpp
/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/signal_reset.cpp:73:15: 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=4154682)
^~~~~~~~~~~~~~~~~~~~~~~~~

Input file: <stdin>
Check file: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/signal_reset.cpp

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

Input was:
<<<<<<
        1: ================== 
        2: WARNING: ThreadSanitizer: signal handler spoils errno (pid=4154682) 
not:73     !~~~~~~~~~~~~~~~~~~~~~~~~                                            error: no match expected
        3:  Signal 27 handler invoked at: 
        4:  #0 handler(int) /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/signal_reset.cpp:15 (signal_reset.cpp.tmp+0x1019d0) 
        5:  
        6: SUMMARY: ThreadSanitizer: signal handler spoils errno /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/signal_reset.cpp:15 in handler(int) 
        7: ================== 
        8: DONE 
        9: ThreadSanitizer: reported 1 warnings 
>>>>>>

--

********************
Step 11 (test compiler-rt debug) failure: test compiler-rt debug (failure)
...
PASS: MemorySanitizer-POWERPC64LE :: heap-origin.cpp (2429 of 2451)
PASS: MemorySanitizer-POWERPC64LE :: check_mem_is_initialized.cpp (2430 of 2451)
PASS: MemorySanitizer-POWERPC64LE :: stack-origin2.cpp (2431 of 2451)
PASS: SanitizerCommon-tsan-powerpc64le-Linux :: max_allocation_size.cpp (2432 of 2451)
PASS: MemorySanitizer-POWERPC64LE :: use-after-free.cpp (2433 of 2451)
PASS: ScudoStandalone-Unit :: ./ScudoUnitTest-powerpc64le-Test/138/267 (2434 of 2451)
PASS: MemorySanitizer-POWERPC64LE :: Linux/cmsghdr.cpp (2435 of 2451)
PASS: MemorySanitizer-POWERPC64LE :: stack-origin.cpp (2436 of 2451)
PASS: ThreadSanitizer-powerpc64le :: bench_threads.cpp (2437 of 2451)
PASS: MemorySanitizer-POWERPC64LE :: recover.cpp (2438 of 2451)
FAIL: ThreadSanitizer-powerpc64le :: signal_reset.cpp (2439 of 2451)
******************** TEST 'ThreadSanitizer-powerpc64le :: signal_reset.cpp' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 1: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_debug/./bin/clang  --driver-mode=g++ -fsanitize=thread -Wall  -m64 -fno-function-sections   -gline-tables-only -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/../ -std=c++11 -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/../ -nostdinc++ -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_debug/runtimes/runtimes-bins/compiler-rt/lib/tsan/libcxx_tsan_powerpc64le/include/c++/v1 -O1 /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/signal_reset.cpp -o /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_debug/runtimes/runtimes-bins/compiler-rt/test/tsan/POWERPC64LEConfig/Output/signal_reset.cpp.tmp &&  /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_debug/runtimes/runtimes-bins/compiler-rt/test/tsan/POWERPC64LEConfig/Output/signal_reset.cpp.tmp 2>&1 | FileCheck /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/signal_reset.cpp
+ /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_debug/./bin/clang --driver-mode=g++ -fsanitize=thread -Wall -m64 -fno-function-sections -gline-tables-only -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/../ -std=c++11 -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/../ -nostdinc++ -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_debug/runtimes/runtimes-bins/compiler-rt/lib/tsan/libcxx_tsan_powerpc64le/include/c++/v1 -O1 /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/signal_reset.cpp -o /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_debug/runtimes/runtimes-bins/compiler-rt/test/tsan/POWERPC64LEConfig/Output/signal_reset.cpp.tmp
+ /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_debug/runtimes/runtimes-bins/compiler-rt/test/tsan/POWERPC64LEConfig/Output/signal_reset.cpp.tmp
+ FileCheck /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/signal_reset.cpp
/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/signal_reset.cpp:73:15: 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=4154682)
^~~~~~~~~~~~~~~~~~~~~~~~~

Input file: <stdin>
Check file: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/signal_reset.cpp

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

Input was:
<<<<<<
        1: ================== 
        2: WARNING: ThreadSanitizer: signal handler spoils errno (pid=4154682) 
not:73     !~~~~~~~~~~~~~~~~~~~~~~~~                                            error: no match expected
        3:  Signal 27 handler invoked at: 
        4:  #0 handler(int) /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/signal_reset.cpp:15 (signal_reset.cpp.tmp+0x1019d0) 
        5:  
        6: SUMMARY: ThreadSanitizer: signal handler spoils errno /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/compiler-rt/test/tsan/signal_reset.cpp:15 in handler(int) 
        7: ================== 
        8: DONE 
        9: ThreadSanitizer: reported 1 warnings 
>>>>>>

--

********************

```

https://github.com/llvm/llvm-project/pull/97874