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/26304

<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 (stdout):
--
# RUN: at line 2
/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
# executed command: /buildbot/worker/arc-folder/build/bin/llc -show-mc-encoding 
-fast-isel -mtriple=i386-unknown-unknown -mattr=+sse2
# .---command stderr------------
# | 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 and instructions to reproduce the bug.
# | 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 0x00000000023b6a38 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) 
(/buildbot/worker/arc-folder/build/bin/llc+0x23b6a38)
# |  #1 0x00000000023b3945 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
# |  #2 0x00007f1e306f6630 __restore_rt sigaction.c:0:0
# |  #3 0x00007f1e2f4463d7 raise (/usr/lib64/libc.so.6+0x363d7)
# |  #4 0x00007f1e2f447ac8 abort (/usr/lib64/libc.so.6+0x37ac8)
# |  #5 0x000000000072e413 llvm::json::operator==(llvm::json::Value const&, 
llvm::json::Value const&) (.cold) JSON.cpp:0:0
# |  #6 0x0000000002136999 
llvm::SelectionDAGISel::CannotYetSelect(llvm::SDNode*) 
(/buildbot/worker/arc-folder/build/bin/llc+0x2136999)
# |  #7 0x000000000213b641 
llvm::SelectionDAGISel::SelectCodeCommon(llvm::SDNode*, unsigned char const*, 
unsigned int) (/buildbot/worker/arc-folder/build/bin/llc+0x213b641)
# |  #8 0x00000000009734d7 (anonymous 
namespace)::X86DAGToDAGISel::Select(llvm::SDNode*) X86ISelDAGToDAG.cpp:0:0
# |  #9 0x000000000213212f llvm::SelectionDAGISel::DoInstructionSelection() 
(/buildbot/worker/arc-folder/build/bin/llc+0x213212f)
# | #10 0x0000000002142ae8 llvm::SelectionDAGISel::CodeGenAndEmitDAG() 
(/buildbot/worker/arc-folder/build/bin/llc+0x2142ae8)
# | #11 0x0000000002146390 
llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) 
(/buildbot/worker/arc-folder/build/bin/llc+0x2146390)
# | #12 0x00000000021478bc 
llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) 
(/buildbot/worker/arc-folder/build/bin/llc+0x21478bc)
# | #13 0x000000000213193f 
llvm::SelectionDAGISelLegacy::runOnMachineFunction(llvm::MachineFunction&) 
(/buildbot/worker/arc-folder/build/bin/llc+0x213193f)
# | #14 0x000000000122f957 
llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.0) 
MachineFunctionPass.cpp:0:0
# | #15 0x00000000018b71bb llvm::FPPassManager::runOnFunction(llvm::Function&) 
(/buildbot/worker/arc-folder/build/bin/llc+0x18b71bb)
# | #16 0x00000000018b7561 llvm::FPPassManager::runOnModule(llvm::Module&) 
(/buildbot/worker/arc-folder/build/bin/llc+0x18b7561)
# | #17 0x00000000018b8175 llvm::legacy::PassManagerImpl::run(llvm::Module&) 
(/buildbot/worker/arc-folder/build/bin/llc+0x18b8175)
# | #18 0x0000000000812660 compileModule(char**, llvm::LLVMContext&, 
std::__cxx11::basic_string<char, std::char_traits<char>, 
std::allocator<char>>&) llc.cpp:0:0
# | #19 0x00000000007369f9 main 
(/buildbot/worker/arc-folder/build/bin/llc+0x7369f9)
# | #20 0x00007f1e2f432555 __libc_start_main (/usr/lib64/libc.so.6+0x22555)
# | #21 0x0000000000807696 _start 
(/buildbot/worker/arc-folder/build/bin/llc+0x807696)
# `-----------------------------
# error: command failed with exit status: -6
# executed command: /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
# .---command stderr------------
# | 
/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 # 
# |         ^
...

```

</details>

https://github.com/llvm/llvm-project/pull/163575
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