[llvm] [X86] Use vectorized i256 bit counts when we know the source originated from the vector unit (PR #171589)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-x86_64-linux-fast` running on `sanitizer-buildbot4` while building `llvm` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/169/builds/17882

<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)
...
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using lld-link: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld.lld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/ld.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using lld-link: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/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: 94458 tests, 64 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90.
FAIL: LLVM :: CodeGen/X86/basic-block-sections-clusters-bb-hash.ll (70398 of 94458)
******************** TEST 'LLVM :: CodeGen/X86/basic-block-sections-clusters-bb-hash.ll' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 11
/home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/llc /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/test/CodeGen/X86/basic-block-sections-clusters-bb-hash.ll -O0 -mtriple=x86_64-pc-linux -function-sections -filetype=obj -basic-block-address-map -emit-bb-hash -o /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp.o
# executed command: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/llc /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/test/CodeGen/X86/basic-block-sections-clusters-bb-hash.ll -O0 -mtriple=x86_64-pc-linux -function-sections -filetype=obj -basic-block-address-map -emit-bb-hash -o /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp.o
# note: command had no output on stdout or stderr
# RUN: at line 16
echo 'v1' > /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp1
# executed command: echo v1
# note: command had no output on stdout or stderr
# RUN: at line 17
echo 'f foo' >> /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp1
# executed command: echo 'f foo'
# note: command had no output on stdout or stderr
# RUN: at line 18
echo 'g 0:100,1:100,2:0 1:100,3:100 2:0,3:0 3:100' >> /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp1
# executed command: echo 'g 0:100,1:100,2:0 1:100,3:100 2:0,3:0 3:100'
# note: command had no output on stdout or stderr
# RUN: at line 22
/home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/llvm-readobj /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp.o --bb-addr-map |  awk 'BEGIN {printf "h"}      /ID: [0-9]+/ {id=$2}      /Hash: 0x[0-9A-Fa-f]+/ {gsub(/^0x/, "", $2); hash=$2; printf " %s:%s", id, hash}      END {print ""}'  >> /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp1
# executed command: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/llvm-readobj /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp.o --bb-addr-map
# note: command had no output on stdout or stderr
# executed command: awk 'BEGIN {printf "h"}      /ID: [0-9]+/ {id=$2}      /Hash: 0x[0-9A-Fa-f]+/ {gsub(/^0x/, "", $2); hash=$2; printf " %s:%s", id, hash}      END {print ""}'
# note: command had no output on stdout or stderr
# RUN: at line 29
/home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/llc < /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/test/CodeGen/X86/basic-block-sections-clusters-bb-hash.ll -O0 -mtriple=x86_64-pc-linux -function-sections -basic-block-sections=/home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp1 -basic-block-section-match-infer |  /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/FileCheck /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/test/CodeGen/X86/basic-block-sections-clusters-bb-hash.ll -check-prefixes=CHECK,LINUX-SECTIONS1
# executed command: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/llc -O0 -mtriple=x86_64-pc-linux -function-sections -basic-block-sections=/home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp1 -basic-block-section-match-infer
# note: command had no output on stdout or stderr
# executed command: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/FileCheck /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/test/CodeGen/X86/basic-block-sections-clusters-bb-hash.ll -check-prefixes=CHECK,LINUX-SECTIONS1
# .---command stderr------------
# | /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/test/CodeGen/X86/basic-block-sections-clusters-bb-hash.ll:80:26: error: LINUX-SECTIONS1-LABEL: expected string not found in input
# | ; LINUX-SECTIONS1-LABEL: # %bb.1:
# |                          ^
# | <stdin>:6:5: note: scanning from here
# | foo: # @foo
Step 14 (stage2/msan check) failure: stage2/msan check (failure)
...
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using lld-link: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld.lld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/ld.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using lld-link: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/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: 94458 tests, 64 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90.
FAIL: LLVM :: CodeGen/X86/basic-block-sections-clusters-bb-hash.ll (70398 of 94458)
******************** TEST 'LLVM :: CodeGen/X86/basic-block-sections-clusters-bb-hash.ll' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 11
/home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/llc /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/test/CodeGen/X86/basic-block-sections-clusters-bb-hash.ll -O0 -mtriple=x86_64-pc-linux -function-sections -filetype=obj -basic-block-address-map -emit-bb-hash -o /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp.o
# executed command: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/llc /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/test/CodeGen/X86/basic-block-sections-clusters-bb-hash.ll -O0 -mtriple=x86_64-pc-linux -function-sections -filetype=obj -basic-block-address-map -emit-bb-hash -o /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp.o
# note: command had no output on stdout or stderr
# RUN: at line 16
echo 'v1' > /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp1
# executed command: echo v1
# note: command had no output on stdout or stderr
# RUN: at line 17
echo 'f foo' >> /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp1
# executed command: echo 'f foo'
# note: command had no output on stdout or stderr
# RUN: at line 18
echo 'g 0:100,1:100,2:0 1:100,3:100 2:0,3:0 3:100' >> /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp1
# executed command: echo 'g 0:100,1:100,2:0 1:100,3:100 2:0,3:0 3:100'
# note: command had no output on stdout or stderr
# RUN: at line 22
/home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/llvm-readobj /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp.o --bb-addr-map |  awk 'BEGIN {printf "h"}      /ID: [0-9]+/ {id=$2}      /Hash: 0x[0-9A-Fa-f]+/ {gsub(/^0x/, "", $2); hash=$2; printf " %s:%s", id, hash}      END {print ""}'  >> /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp1
# executed command: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/llvm-readobj /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp.o --bb-addr-map
# note: command had no output on stdout or stderr
# executed command: awk 'BEGIN {printf "h"}      /ID: [0-9]+/ {id=$2}      /Hash: 0x[0-9A-Fa-f]+/ {gsub(/^0x/, "", $2); hash=$2; printf " %s:%s", id, hash}      END {print ""}'
# note: command had no output on stdout or stderr
# RUN: at line 29
/home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/llc < /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/test/CodeGen/X86/basic-block-sections-clusters-bb-hash.ll -O0 -mtriple=x86_64-pc-linux -function-sections -basic-block-sections=/home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp1 -basic-block-section-match-infer |  /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/FileCheck /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/test/CodeGen/X86/basic-block-sections-clusters-bb-hash.ll -check-prefixes=CHECK,LINUX-SECTIONS1
# executed command: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/llc -O0 -mtriple=x86_64-pc-linux -function-sections -basic-block-sections=/home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/CodeGen/X86/Output/basic-block-sections-clusters-bb-hash.ll.tmp1 -basic-block-section-match-infer
# note: command had no output on stdout or stderr
# executed command: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/FileCheck /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/test/CodeGen/X86/basic-block-sections-clusters-bb-hash.ll -check-prefixes=CHECK,LINUX-SECTIONS1
# .---command stderr------------
# | /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/test/CodeGen/X86/basic-block-sections-clusters-bb-hash.ll:80:26: error: LINUX-SECTIONS1-LABEL: expected string not found in input
# | ; LINUX-SECTIONS1-LABEL: # %bb.1:
# |                          ^
# | <stdin>:6:5: note: scanning from here
# | foo: # @foo

```

</details>

https://github.com/llvm/llvm-project/pull/171589