[llvm] [LLVM][CodeGen][AArch64] Improve lowering of boolean vector popcount operations. (PR #166401)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-aarch64-linux` running on `sanitizer-buildbot7` while building `llvm` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/51/builds/26547

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 2 (annotate) failure: 'python ../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py' (failure)
...
[182/186] Generating MSAN_INST_TEST_OBJECTS.msan_test.cpp.aarch64-with-call.o
[183/186] Generating Msan-aarch64-with-call-Test
[184/186] Generating MSAN_INST_TEST_OBJECTS.msan_test.cpp.aarch64.o
[185/186] Generating Msan-aarch64-Test
[185/186] Running compiler_rt regression tests
llvm-lit: /home/b/sanitizer-aarch64-linux/build/llvm-project/llvm/utils/lit/lit/discovery.py:276: warning: input '/home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/interception/Unit' contained no tests
llvm-lit: /home/b/sanitizer-aarch64-linux/build/llvm-project/llvm/utils/lit/lit/discovery.py:276: warning: input '/home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/Unit' contained no tests
llvm-lit: /home/b/sanitizer-aarch64-linux/build/llvm-project/llvm/utils/lit/lit/main.py:74: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 6001 tests, 72 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90.
FAIL: libFuzzer-aarch64-libcxx-Linux :: reduce_inputs.test (5828 of 6001)
******************** TEST 'libFuzzer-aarch64-libcxx-Linux :: reduce_inputs.test' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
rm -rf /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp/C # RUN: at line 3
+ rm -rf /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp/C
mkdir -p /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp/C # RUN: at line 4
+ mkdir -p /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp/C
/home/b/sanitizer-aarch64-linux/build/build_default/./bin/clang    -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta   --driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer -I/home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/lib/fuzzer  -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta  /home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/test/fuzzer/ShrinkControlFlowSimpleTest.cpp -o /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp-ShrinkControlFlowSimpleTest # RUN: at line 5
+ /home/b/sanitizer-aarch64-linux/build/build_default/./bin/clang -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta --driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer -I/home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/lib/fuzzer -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta /home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/test/fuzzer/ShrinkControlFlowSimpleTest.cpp -o /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp-ShrinkControlFlowSimpleTest
/home/b/sanitizer-aarch64-linux/build/build_default/./bin/clang    -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta   --driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer -I/home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/lib/fuzzer  -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta  /home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/test/fuzzer/ShrinkControlFlowTest.cpp -o /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp-ShrinkControlFlowTest # RUN: at line 6
+ /home/b/sanitizer-aarch64-linux/build/build_default/./bin/clang -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta --driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer -I/home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/lib/fuzzer -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta /home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/test/fuzzer/ShrinkControlFlowTest.cpp -o /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp-ShrinkControlFlowTest
/home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp-ShrinkControlFlowSimpleTest  -exit_on_item=0eb8e4ed029b774d80f2b66408203801cb982a60   -runs=1000000 /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp/C 2>&1 | FileCheck /home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/test/fuzzer/reduce_inputs.test # RUN: at line 7
+ /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp-ShrinkControlFlowSimpleTest -exit_on_item=0eb8e4ed029b774d80f2b66408203801cb982a60 -runs=1000000 /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp/C
+ FileCheck /home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/test/fuzzer/reduce_inputs.test
/home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/test/fuzzer/reduce_inputs.test:8:8: error: CHECK: expected string not found in input
CHECK: INFO: found item with checksum '0eb8e4ed029b774d80f2b66408203801cb982a60'
       ^
<stdin>:1:1: note: scanning from here
INFO: Running with entropic power schedule (0xFF, 100).
^

Input file: <stdin>
Check file: /home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/test/fuzzer/reduce_inputs.test

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

Input was:
<<<<<<
         1: INFO: Running with entropic power schedule (0xFF, 100). 
check:8     X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
         2: INFO: Seed: 1647704890 
check:8     ~~~~~~~~~~~~~~~~~~~~~~~
         3: INFO: Loaded 1 modules (6 inline 8-bit counters): 6 [0xbc3a3e1f5018, 0xbc3a3e1f501e),  
check:8     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         4: INFO: Loaded 1 PC tables (6 PCs): 6 [0xbc3a3e1f5020,0xbc3a3e1f5080),  
check:8     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Step 9 (test compiler-rt symbolizer) failure: test compiler-rt symbolizer (failure)
...
[182/186] Generating MSAN_INST_TEST_OBJECTS.msan_test.cpp.aarch64-with-call.o
[183/186] Generating Msan-aarch64-with-call-Test
[184/186] Generating MSAN_INST_TEST_OBJECTS.msan_test.cpp.aarch64.o
[185/186] Generating Msan-aarch64-Test
[185/186] Running compiler_rt regression tests
llvm-lit: /home/b/sanitizer-aarch64-linux/build/llvm-project/llvm/utils/lit/lit/discovery.py:276: warning: input '/home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/interception/Unit' contained no tests
llvm-lit: /home/b/sanitizer-aarch64-linux/build/llvm-project/llvm/utils/lit/lit/discovery.py:276: warning: input '/home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/Unit' contained no tests
llvm-lit: /home/b/sanitizer-aarch64-linux/build/llvm-project/llvm/utils/lit/lit/main.py:74: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 6001 tests, 72 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90.
FAIL: libFuzzer-aarch64-libcxx-Linux :: reduce_inputs.test (5828 of 6001)
******************** TEST 'libFuzzer-aarch64-libcxx-Linux :: reduce_inputs.test' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
rm -rf /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp/C # RUN: at line 3
+ rm -rf /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp/C
mkdir -p /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp/C # RUN: at line 4
+ mkdir -p /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp/C
/home/b/sanitizer-aarch64-linux/build/build_default/./bin/clang    -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta   --driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer -I/home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/lib/fuzzer  -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta  /home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/test/fuzzer/ShrinkControlFlowSimpleTest.cpp -o /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp-ShrinkControlFlowSimpleTest # RUN: at line 5
+ /home/b/sanitizer-aarch64-linux/build/build_default/./bin/clang -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta --driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer -I/home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/lib/fuzzer -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta /home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/test/fuzzer/ShrinkControlFlowSimpleTest.cpp -o /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp-ShrinkControlFlowSimpleTest
/home/b/sanitizer-aarch64-linux/build/build_default/./bin/clang    -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta   --driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer -I/home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/lib/fuzzer  -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta  /home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/test/fuzzer/ShrinkControlFlowTest.cpp -o /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp-ShrinkControlFlowTest # RUN: at line 6
+ /home/b/sanitizer-aarch64-linux/build/build_default/./bin/clang -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta --driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer -I/home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/lib/fuzzer -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta /home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/test/fuzzer/ShrinkControlFlowTest.cpp -o /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp-ShrinkControlFlowTest
/home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp-ShrinkControlFlowSimpleTest  -exit_on_item=0eb8e4ed029b774d80f2b66408203801cb982a60   -runs=1000000 /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp/C 2>&1 | FileCheck /home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/test/fuzzer/reduce_inputs.test # RUN: at line 7
+ /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp-ShrinkControlFlowSimpleTest -exit_on_item=0eb8e4ed029b774d80f2b66408203801cb982a60 -runs=1000000 /home/b/sanitizer-aarch64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/AARCH64LibcxxLinuxConfig/Output/reduce_inputs.test.tmp/C
+ FileCheck /home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/test/fuzzer/reduce_inputs.test
/home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/test/fuzzer/reduce_inputs.test:8:8: error: CHECK: expected string not found in input
CHECK: INFO: found item with checksum '0eb8e4ed029b774d80f2b66408203801cb982a60'
       ^
<stdin>:1:1: note: scanning from here
INFO: Running with entropic power schedule (0xFF, 100).
^

Input file: <stdin>
Check file: /home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/test/fuzzer/reduce_inputs.test

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

Input was:
<<<<<<
         1: INFO: Running with entropic power schedule (0xFF, 100). 
check:8     X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
         2: INFO: Seed: 1647704890 
check:8     ~~~~~~~~~~~~~~~~~~~~~~~
         3: INFO: Loaded 1 modules (6 inline 8-bit counters): 6 [0xbc3a3e1f5018, 0xbc3a3e1f501e),  
check:8     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         4: INFO: Loaded 1 PC tables (6 PCs): 6 [0xbc3a3e1f5020,0xbc3a3e1f5080),  
check:8     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

```

</details>

https://github.com/llvm/llvm-project/pull/166401