llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `arc-builder` running on 
`arc-worker` while building `clang,llvm` at step 6 
"test-build-unified-tree-check-all".

Full details are available at: 
https://lab.llvm.org/buildbot/#/builders/3/builds/18289

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

```
Step 6 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'LLVM :: CodeGen/X86/sse2-intrinsics-fast-isel.ll' 
FAILED ********************
Exit Code: 1

Command Output (stderr):
--
/buildbot/worker/arc-folder/build/bin/llc < 
/buildbot/worker/arc-folder/llvm-project/llvm/test/CodeGen/X86/sse2-intrinsics-fast-isel.ll
 -show-mc-encoding -fast-isel -mtriple=i386-unknown-unknown -mattr=+sse2 | 
/buildbot/worker/arc-folder/build/bin/FileCheck 
/buildbot/worker/arc-folder/llvm-project/llvm/test/CodeGen/X86/sse2-intrinsics-fast-isel.ll
 --check-prefixes=CHECK,X86,SSE,X86-SSE # RUN: at line 2
+ /buildbot/worker/arc-folder/build/bin/FileCheck 
/buildbot/worker/arc-folder/llvm-project/llvm/test/CodeGen/X86/sse2-intrinsics-fast-isel.ll
 --check-prefixes=CHECK,X86,SSE,X86-SSE
+ /buildbot/worker/arc-folder/build/bin/llc -show-mc-encoding -fast-isel 
-mtriple=i386-unknown-unknown -mattr=+sse2
LLVM ERROR: Cannot select: intrinsic %llvm.x86.sse2.clflush
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and 
include the crash backtrace.
Stack dump:
0.      Program arguments: /buildbot/worker/arc-folder/build/bin/llc 
-show-mc-encoding -fast-isel -mtriple=i386-unknown-unknown -mattr=+sse2
1.      Running pass 'Function Pass Manager' on module '<stdin>'.
2.      Running pass 'X86 DAG->DAG Instruction Selection' on function 
'@test_mm_clflush'
 #0 0x0000000002315b28 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) 
(/buildbot/worker/arc-folder/build/bin/llc+0x2315b28)
 #1 0x0000000002312ed5 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
 #2 0x00007f85dfdcd630 __restore_rt sigaction.c:0:0
 #3 0x00007f85deb1d3d7 raise (/usr/lib64/libc.so.6+0x363d7)
 #4 0x00007f85deb1eac8 abort (/usr/lib64/libc.so.6+0x37ac8)
 #5 0x0000000000719c51 llvm::json::operator==(llvm::json::Value const&, 
llvm::json::Value const&) (.cold) JSON.cpp:0:0
 #6 0x00000000020a64f9 llvm::SelectionDAGISel::CannotYetSelect(llvm::SDNode*) 
(/buildbot/worker/arc-folder/build/bin/llc+0x20a64f9)
 #7 0x00000000020aafa9 llvm::SelectionDAGISel::SelectCodeCommon(llvm::SDNode*, 
unsigned char const*, unsigned int) 
(/buildbot/worker/arc-folder/build/bin/llc+0x20aafa9)
 #8 0x0000000000957a07 (anonymous 
namespace)::X86DAGToDAGISel::Select(llvm::SDNode*) X86ISelDAGToDAG.cpp:0:0
 #9 0x00000000020a1dbf llvm::SelectionDAGISel::DoInstructionSelection() 
(/buildbot/worker/arc-folder/build/bin/llc+0x20a1dbf)
#10 0x00000000020b1938 llvm::SelectionDAGISel::CodeGenAndEmitDAG() 
(/buildbot/worker/arc-folder/build/bin/llc+0x20b1938)
#11 0x00000000020b508e 
llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) 
(/buildbot/worker/arc-folder/build/bin/llc+0x20b508e)
#12 0x00000000020b6225 
llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) 
(/buildbot/worker/arc-folder/build/bin/llc+0x20b6225)
#13 0x00000000020a15df 
llvm::SelectionDAGISelLegacy::runOnMachineFunction(llvm::MachineFunction&) 
(/buildbot/worker/arc-folder/build/bin/llc+0x20a15df)
#14 0x00000000011fad27 
llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.0) 
MachineFunctionPass.cpp:0:0
#15 0x00000000018542b2 llvm::FPPassManager::runOnFunction(llvm::Function&) 
(/buildbot/worker/arc-folder/build/bin/llc+0x18542b2)
#16 0x0000000001854651 llvm::FPPassManager::runOnModule(llvm::Module&) 
(/buildbot/worker/arc-folder/build/bin/llc+0x1854651)
#17 0x0000000001855267 llvm::legacy::PassManagerImpl::run(llvm::Module&) 
(/buildbot/worker/arc-folder/build/bin/llc+0x1855267)
#18 0x00000000007f6a92 compileModule(char**, llvm::LLVMContext&) llc.cpp:0:0
#19 0x0000000000722166 main (/buildbot/worker/arc-folder/build/bin/llc+0x722166)
#20 0x00007f85deb09555 __libc_start_main (/usr/lib64/libc.so.6+0x22555)
#21 0x00000000007ecfc6 _start 
(/buildbot/worker/arc-folder/build/bin/llc+0x7ecfc6)
/buildbot/worker/arc-folder/llvm-project/llvm/test/CodeGen/X86/sse2-intrinsics-fast-isel.ll:399:14:
 error: SSE-LABEL: expected string not found in input
; SSE-LABEL: test_mm_bsrli_si128:
             ^
<stdin>:170:21: note: scanning from here
test_mm_bslli_si128: # @test_mm_bslli_si128
                    ^
<stdin>:178:9: note: possible intended match here
 .globl test_mm_bsrli_si128 # 
        ^

Input file: <stdin>
Check file: 
/buildbot/worker/arc-folder/llvm-project/llvm/test/CodeGen/X86/sse2-intrinsics-fast-isel.ll

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

```

</details>

https://github.com/llvm/llvm-project/pull/146302
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